A method, device and system for describing the exploitation of a shale oil and gas reservoir

Abstract

The embodiments of this specification disclose a method, device, and system for describing the exploitation of shale oil and gas reservoirs, which relate to the technical field of oil and gas reservoir exploitation. The method includes: obtaining a shale oil and gas reservoir data set corresponding to the shale oil and gas reservoir; performing numerical simulation on multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir data set to determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine resource information through the comprehensive evaluation model of the shale oil and gas reservoir; determining multiple pre-set exploitation strategies, and performing dynamic simulation on the exploitation process to determine multiple predicted resource production information corresponding to each exploitation strategy; screening among the exploitation strategies through a pre-set resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy to determine multiple specified exploitation strategies that meet the preset requirements, and determining the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; describing the shale oil and gas reservoir to determine the shale oil and gas reservoir exploitation description information.

Description

Technical Field

[0001] This specification relates to the technical field of oil and gas reservoir exploitation, and particularly to a method, device and system for describing the exploitation of shale oil and gas reservoirs. Background Art

[0002] With the continuous growth of global energy demand, the exploration and utilization of new energy resources have become increasingly important. As an emerging unconventional oil and gas resource, shale oil and gas reservoirs have received extensive attention due to their huge resource potential and exploitation prospects. However, the exploitation of shale oil and gas reservoirs is not easy, and its exploitation potential is affected by various factors, including geological conditions, engineering technology, ecological environment and economic value, etc. Therefore, describing the exploitation potential of shale oil and gas reservoirs is of great significance for scientific decision-making, reasonable planning and effective exploitation.

[0003] Currently, the description of the exploitation potential of shale oil and gas reservoirs mainly relies on the comprehensive analysis of factors such as geological structure, formation conditions, source rock characteristics, reservoir conditions, fluid properties and distribution, etc. By collecting and analyzing a large amount of geological, geophysical, geochemical and other data, the reserves, distribution, quality and exploitation difficulty of shale oil and gas reservoirs are evaluated. In this case, there are many difficulties in the variation laws and accurate acquisition of the key parameters for shale gas resource evaluation, such as geochemical parameters, reservoir physical property parameters, rock mineralogy parameters, etc., which directly affect the rationality of resource quantity calculation and favorable area selection results; in addition, compared with conventional oil and gas, the accumulation mechanism and enrichment conditions of shale gas are special, there is no clear physical boundary, and there is a lack of a resource quantity calculation method for the characteristics of shale gas. In addition, the exploitation of shale oil and gas requires specific engineering technologies, such as horizontal well technology, hydraulic fracturing technology, etc. However, in the existing evaluation methods, the evaluation of engineering technology is often insufficient. Therefore, in the existing description methods, the exploitation potential is mostly described in a single dimension of the oil and gas reservoir, and the acquisition of key parameters is relatively separated from the characteristics of shale oil and gas reservoirs, resulting in limited accuracy and comprehensiveness of the description results of shale oil and gas reservoirs. Summary of the Invention

[0004] One or more embodiments of this specification provide a method, device and system for describing the exploitation of shale oil and gas reservoirs, which are used to solve the following technical problems: in the existing description methods, the exploitation potential is mostly described in a single dimension of the oil and gas reservoir, and the acquisition of key parameters is relatively separated from the characteristics of shale oil and gas reservoirs, resulting in limited accuracy and comprehensiveness of the description results of shale oil and gas reservoirs.

[0005] One or more embodiments of this specification adopt the following technical solutions:

[0006] One or more embodiments of this specification provide a method for describing the exploitation of a shale oil and gas reservoir. The method includes: obtaining a shale oil and gas reservoir dataset corresponding to the shale oil and gas reservoir, where the shale oil and gas reservoir dataset includes geological exploration data, geochemical data, and sedimentary environment data; performing numerical simulation on multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir dataset to determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir, where the resource information includes reserve information, distribution information, and resource quality information of the shale oil and gas reservoir; determining multiple preset exploitation strategies, and dynamically simulating the exploitation process of the shale oil and gas reservoir through the multiple exploitation strategies and the resource information to determine multiple predicted resource production information corresponding to each exploitation strategy, where each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; screening among the multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy to determine multiple specified exploitation strategies that meet the preset requirements, and determining the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; describing the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information, and the specified predicted resource production information of each specified exploitation strategy to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0007] One or more embodiments of this specification provide an apparatus for describing the exploitation of a shale oil and gas reservoir, including:

[0008] At least one processor; and,

[0009] A memory communicatively connected to the at least one processor; wherein,

[0010] The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can:

[0011] Obtain a shale oil and gas reservoir dataset corresponding to the shale oil and gas reservoir, where the shale oil and gas reservoir dataset includes geological exploration data, geochemical data, and sedimentary environment data; according to the shale oil and gas reservoir dataset, conduct numerical simulations on multiple processes of the shale oil and gas reservoir to determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir, where the resource information includes reserve information, distribution information, and resource quality information of the shale oil and gas reservoir; determine multiple preset exploitation strategies, and through the multiple exploitation strategies and the resource information, conduct dynamic simulations on the exploitation process of the shale oil and gas reservoir to determine multiple predicted resource production information corresponding to each exploitation strategy, where each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy, screen among multiple exploitation strategies to determine multiple specified exploitation strategies that meet the preset requirements, and determine the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; according to the exploitation cost information, the exploitation difficulty information, and the specified predicted resource production information of each specified exploitation strategy, describe the shale oil and gas reservoir to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0012] A shale oil and gas reservoir exploitation description system provided by one or more embodiments of this specification, the system includes: a data acquisition module, configured to acquire a shale oil and gas reservoir data set corresponding to the shale oil and gas reservoir, wherein the shale oil and gas reservoir data set includes geological exploration data, geochemical data, and sedimentary environment data; a resource determination module, configured to perform numerical simulation on multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir data set, determine a shale oil and gas reservoir comprehensive evaluation model, so as to determine the resource information of the shale oil and gas reservoir through the shale oil and gas reservoir comprehensive evaluation model, wherein the resource information includes reserve information, distribution information, and resource quality information of the shale oil and gas reservoir; a resource production prediction module, configured to determine multiple preset exploitation strategies, and perform dynamic simulation on the exploitation process of the shale oil and gas reservoir through the multiple exploitation strategies and the resource information, so as to determine multiple predicted resource production information corresponding to each exploitation strategy, wherein each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; an exploitation strategy screening module, configured to screen among multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy, so as to determine multiple specified exploitation strategies that meet the preset requirements, and determine the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; a shale oil and gas reservoir description module, configured to describe the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information, and the specified predicted resource production information of each specified exploitation strategy, so as to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0013] The above at least one technical solution adopted in the embodiments of this specification can achieve the following beneficial effects: Through the above technical solutions, by integrating geological exploration data, geochemical data, and sedimentary environment data, numerical simulations are carried out on multiple processes of shale oil and gas reservoirs. Using numerical simulation technology, the characteristics and resource distribution of shale oil and gas reservoirs can be described more accurately, thereby constructing a more comprehensive and accurate comprehensive evaluation model, which can better reflect the actual situation of shale oil and gas reservoirs, improve the accuracy and comprehensiveness of resource information description, and avoid the single drawback of the existing description method in describing the exploitation potential in a single dimension of the oil and gas reservoir, taking into account the multi-dimensional characteristics and complexity of shale oil and gas reservoirs; When determining resource information based on the shale oil and gas reservoir dataset, multiple aspects such as reserve information, distribution information, and resource quality information are comprehensively considered. The comprehensive consideration method can ensure that the acquisition of key parameters is closely related to the characteristics of shale oil and gas reservoirs, improving the accuracy and reliability of the description results; Dynamically simulating the exploitation process under multiple exploitation strategies can predict the resource production information under different strategies. When determining the exploitation strategy and conducting dynamic simulation, not only the predicted resource production information is considered, but also multiple dimensions such as resource thresholds, exploitation cost information, and exploitation difficulty information are combined for screening. The multi-dimensional consideration method can ensure that the selected exploitation strategy meets the requirements of economic benefits and is technically feasible, providing scientific support for the description of the exploitation plan. Through the description at the reserve resource level and the exploitation plan level, accurate and comprehensive exploitation description information is provided, which can better understand the resource distribution and exploitation potential of shale oil and gas reservoirs, provide technical reference for the subsequent exploitation process, and contribute to the rational allocation and management of resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in this specification. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. In the drawings:

[0015] Figure 1 It is a schematic flowchart of a method for describing the exploitation of a shale oil and gas reservoir provided by an embodiment of this specification;

[0016] Figure 2 It is a schematic structural diagram of a device for describing the exploitation of a shale oil and gas reservoir provided by an embodiment of this specification. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] To enable those skilled in the art to better understand the technical solutions in this specification, the following will clearly and completely describe the technical solutions in the embodiments of this specification in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this specification, rather than all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this specification.

[0018] The embodiments of this specification provide a method for describing the exploitation of shale oil and gas reservoirs. It should be noted that the execution subject in the embodiments of this specification can be a server or any device with data processing capabilities. Figure 1 The flowchart of a method for describing the exploitation of shale oil and gas reservoirs provided by the embodiments of this specification is as Figure 1 shown, and mainly includes the following steps:

[0019] Step S101, obtain the shale oil and gas reservoir dataset corresponding to the shale oil and gas reservoir.

[0020] Among them, the shale oil and gas reservoir dataset includes geological exploration data, geochemical data, and sedimentary environment data;

[0021] In an embodiment of this specification, during the exploration of shale oil and gas reservoirs, the shale oil and gas reservoir dataset is obtained. The geological exploration data includes seismic data, drilling data, and may also include outcrop data. Seismic data is obtained by seismic exploration technology to obtain underground reflected wave data. Drilling data includes core description, logging data (such as acoustic wave, resistivity, natural gamma, etc.), drilling logs, etc. Outcrop data refers to the characteristics of rock outcrops directly observed on the ground. Geochemical data includes core sample analysis data, including organic matter content, kerogen type, thermal maturity, etc., and fluid analysis data, such as the chemical composition and physical properties of oil, gas, and water samples. The extraction of key parameters mainly relies on laboratory analysis and geophysical interpretation. Taking nuclear magnetic resonance (NMR) and gas chromatography-mass spectrometry (GC-MS) as examples: Nuclear magnetic resonance (NMR) is used to analyze the pore structure and fluid properties in core samples and can measure parameters such as porosity, pore size distribution, and fluid saturation. Gas chromatography-mass spectrometry (GC-MS) is used to analyze organic compounds in core samples and can determine the type of organic matter, maturity (such as through biomarker analysis), etc. In addition, logging data (such as acoustic wave, density, neutron, resistivity, etc.) can also be used to estimate parameters such as porosity and permeability. The sedimentary environment data includes regional geological information, which is used to display information such as regional tectonics and stratigraphic distribution, and also includes sedimentary facies analysis information, including the rock type of sedimentary rocks and sedimentary environments (such as rivers, lakes, oceans, etc.). In addition, it may also include paleontological data, such as fossil records, which are used to infer the sedimentary age and paleoenvironment.

[0022] Step S102: Based on the shale oil and gas reservoir dataset, numerically simulate multiple processes of the shale oil and gas reservoir to determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir.

[0023] In an embodiment of the present specification, multiple data in the shale oil and gas reservoir dataset are used to perform data simulation on multiple processes of the shale oil and gas reservoir to generate a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir. Among them, the resource information includes reserve information, distribution information, and resource quality information of the shale oil and gas reservoir. Considering the particularity of shale gas, a special resource volume calculation method is developed for the characteristics of source-reservoir integration and in-situ retention of the shale oil and gas reservoir, taking into account multiple processes such as the generation, migration, and accumulation of shale gas, so as to more accurately evaluate the resource information such as the reserves of the shale oil and gas reservoir.

[0024] Based on the shale oil and gas reservoir dataset, numerically simulate multiple processes of the shale oil and gas reservoir to determine a comprehensive evaluation model of the shale oil and gas reservoir, specifically including: based on the shale oil and gas reservoir dataset, numerically simulate the shale gas generation process and the shale gas migration and accumulation process of the shale oil and gas reservoir respectively to determine the shale gas generation simulation model corresponding to the shale gas generation process and the shale gas migration and accumulation simulation model corresponding to the shale gas migration and accumulation process; based on the shale gas generation simulation model and the shale gas migration and accumulation simulation model, determine the comprehensive evaluation model of the shale oil and gas reservoir, so as to generate the shale gas generation parameters corresponding to the shale gas generation process and the shale gas storage parameters corresponding to the shale gas migration and accumulation process through the comprehensive evaluation model of the shale oil and gas reservoir.

[0025] In one embodiment of this specification, considering the characteristics of source-reservoir integration and in-situ retention in shale oil and gas reservoirs, and deeply considering the processes of shale gas generation, migration, and accumulation, a comprehensive evaluation model is constructed in combination with the geological characteristics, physical properties, chemical composition of shale, and the occurrence state of shale gas. During the shale gas generation process, factors such as the type of organic matter and thermal maturity in shale are considered. Through laboratory simulation or geological history simulation, the generation amount of shale gas is estimated, which usually involves the analysis of kerogen type, thermal maturity assessment (such as using the Ro value), and the simulation of the chemical process of organic matter conversion into hydrocarbons, to determine the shale gas generation simulation model corresponding to this shale gas generation process. During the shale gas migration and accumulation process, after shale gas is generated, it will be affected by various factors such as formation pressure, temperature, and pore structure, and thus migrate and accumulate in the shale layer. The resource quantity calculation method will consider the influence of the above factors, and through geological modeling and numerical simulation techniques, simulate the shale gas migration and accumulation process to determine the shale gas migration and accumulation simulation model. Incorporate the processes of shale gas generation, migration, and accumulation into a comprehensive evaluation model to determine the comprehensive evaluation model of shale oil and gas reservoirs. Combine data from multiple aspects such as geological exploration, geophysics, and geochemistry to accurately evaluate the reserves of shale oil and gas reservoirs. The above evaluation method can not only give the total reserves of shale oil and gas reservoirs, but also evaluate their distribution laws, quality characteristics, etc., providing a scientific basis for subsequent exploration and development.

[0026] According to this shale oil and gas reservoir data set, numerically simulate the shale gas generation process and the shale gas migration and accumulation process of this shale oil and gas reservoir respectively, to determine the shale gas generation simulation model corresponding to this shale gas generation process and the shale gas migration and accumulation simulation model corresponding to this shale gas migration and accumulation process, specifically including: obtaining the geological exploration data in this shale oil and gas reservoir data set, wherein the geological exploration data includes seismic data and drilling data; using the seismic data and the drilling data to construct a three-dimensional geological model corresponding to this shale oil and gas reservoir, so as to obtain formation distribution information and structural feature information through this three-dimensional geological model; obtaining this geochemical data, wherein the geochemical data includes core sample analysis data, and the core sample analysis data includes organic matter information, kerogen type information, porosity information, and thermal maturity information in the core sample; through this core sample analysis data, simulate the shale gas generation process to determine the shale gas generation simulation model corresponding to this shale gas generation process; based on this formation distribution information, this structural feature information, and this sedimentary environment data, simulate the shale gas migration and accumulation process to determine the shale gas migration and accumulation simulation model corresponding to this shale gas migration and accumulation process.

[0027] In one embodiment of the present specification, seismic data and drilling data in the geological exploration data of the shale oil and gas reservoir dataset are obtained. Using the seismic data and the drilling data, a three-dimensional geological model corresponding to the shale oil and gas reservoir is constructed, and the three-dimensional geological model is analyzed to obtain the formation distribution information and structural feature information of the shale oil and gas reservoir. The geochemical data is obtained, and the geochemical data includes core sample analysis data. The core sample analysis data includes organic matter information, kerogen type information, porosity information, and thermal maturity information in the core sample. Through the core sample analysis data, the shale gas generation process is simulated to determine a shale gas generation simulation model corresponding to the shale gas generation process. Based on the formation distribution information, the structural feature information, and the sedimentary environment data, the shale gas migration and accumulation process is simulated to determine a shale gas migration and accumulation simulation model corresponding to the shale gas migration and accumulation process.

[0028] Through the above technical solution, the comprehensive evaluation model can comprehensively consider complex processes such as the generation, migration, and accumulation of shale oil and gas reservoirs, combine multi-disciplinary data such as geology, physics, and chemistry, more accurately evaluate the reserves of shale oil and gas reservoirs, reduce evaluation errors, improve the reliability of evaluation results and the pertinence of shale oil and gas reservoirs; through the comprehensive evaluation model, the geological characteristics and distribution of shale oil and gas reservoirs can be understood more deeply, the exploration and development strategies can be optimized, the exploration and development efficiency can be improved, the development cost can be reduced, and accurate reserve evaluation helps to formulate a reasonable mining plan to avoid over-mining and wasting resources. At the same time, the comprehensive evaluation model can also consider environmental factors and social impacts to achieve the sustainable development and utilization of shale gas resources.

[0029] Step S103, determine multiple pre-set mining strategies, and dynamically simulate the mining process of the shale oil and gas reservoir through the multiple mining strategies and resource information to determine multiple predicted resource production information corresponding to each mining strategy.

[0030] Wherein, each of the mining strategies includes an engineering technology type and a mining plan corresponding to the engineering technology type;

[0031] In one embodiment of this specification, multiple pre-set exploitation strategies are determined. Here, the exploitation strategy refers to the technology and plan used for the exploitation of this shale oil and gas reservoir, that is, each exploitation strategy includes the type of engineering technology and the exploitation plan corresponding to this engineering technology type. It should be noted that multiple exploitation strategies correspond to multiple types of engineering technologies, such as horizontal well technology, hydraulic fracturing technology, etc. Through multiple exploitation strategies and resource information, the exploitation process of the shale oil and gas reservoir is dynamically simulated to determine multiple predicted resource production information corresponding to each exploitation strategy. The dynamic simulation technology is a technology that uses numerical methods to simulate the exploitation process of a shale gas reservoir. By simulating the production changes under different exploitation plans, the exploitation plan can be optimized and the resource utilization efficiency can be improved. First, a numerical model is established. According to factors such as the geological characteristics, physical properties, and exploitation conditions of the shale gas reservoir, a numerical model is established. This model can simulate the migration, diffusion, desorption, etc. of shale gas under the exploitation plan. It should be noted that the difference between this numerical model and the comprehensive evaluation model of the shale oil and gas reservoir is that the role of the comprehensive evaluation model of the shale oil and gas reservoir is to predict storage resource information such as the reserves of the shale oil and gas reservoir, and the role of this numerical model is to simulate the migration, diffusion, desorption, etc. of shale gas under the exploitation plan. By adjusting the exploitation technology and exploitation parameters, the production changes under different exploitation plans are simulated to determine multiple predicted resource production information corresponding to each exploitation strategy.

[0032] Through the above technical solution, dynamic simulation can simulate the resource production situation under different exploitation strategies, accurately evaluate the potential effects of various strategies, help select the most economical and efficient exploitation strategy, optimize resource allocation, and improve exploitation efficiency; by simulating the resource production situation under different exploitation strategies, potential risks and challenges can be predicted and evaluated, and the uncertainty and risks during the exploitation process can be reduced.

[0033] Step S104, through the pre-set resource threshold and multiple predicted resource production information corresponding to each exploitation strategy, screen among multiple exploitation strategies to determine multiple specified exploitation strategies that meet the preset requirements, and determine the exploitation cost information and exploitation difficulty information of each specified exploitation strategy.

[0034] Screen among multiple production strategies based on a preset resource threshold and the multiple predicted resource production information corresponding to each of these production strategies to determine multiple specified production strategies that meet the preset requirements, specifically including: determining the preset resource threshold and the predicted resource production in the predicted resource production information, where the resource threshold includes the production threshold corresponding to each engineering technology type; determining the corresponding type production threshold based on the engineering technology type corresponding to each of these production strategies; through the multiple predicted resource production information, according to the corresponding type production threshold, eliminate at least one production strategy with a predicted resource production lower than the production threshold among the multiple production strategies to determine multiple specified production strategies that meet the preset requirements.

[0035] In one embodiment of the present specification, after the multiple predicted resource production information corresponding to each production strategy, it is necessary to eliminate and screen the production strategies. Generally, under different production technologies and production plans for shale oil and gas reservoirs in the same area, the actual production volumes are different. Here, the production strategies with lower production volumes should be eliminated. Determine the preset resource threshold, and the resource threshold includes the production threshold corresponding to each engineering technology type. According to the engineering technology type corresponding to each production strategy, perform threshold matching to determine the corresponding type production threshold. According to the corresponding type production threshold, eliminate at least one production strategy with a predicted resource production lower than the production threshold among the multiple production strategies to determine multiple specified production strategies that meet the preset requirements.

[0036] Through the above technical solution, by setting the resource threshold, the production strategies can meet certain standards in terms of resource production, avoiding the selection of production strategies with too low production volumes, thereby improving the overall production efficiency; eliminating the production strategies that do not meet the production threshold means concentrating resources on those strategies that are more likely to bring high returns, optimizing resource allocation, and ensuring the most effective utilization of resources.

[0037] Determine the preset resource threshold, specifically including: through the resource information of the shale oil and gas reservoir, using big data technology to construct a historical production dataset corresponding to the shale oil and gas reservoir, where the historical production dataset includes the historical engineering technology types corresponding to multiple historical shale oil and gas reservoirs and the historical predicted reserves and historical actual production volumes corresponding to each historical engineering technology type; classify the historical production dataset according to the historical engineering technology types to obtain historical production data subsets corresponding to each historical engineering technology type; based on the historical predicted reserves and historical actual production volumes corresponding to the multiple historical shale oil and gas reservoirs in each historical production data subset, determine the historical production rate of each historical shale oil and gas reservoir corresponding to each historical engineering technology type; according to the historical production rates of each historical shale oil and gas reservoir corresponding to each historical engineering technology type, determine the historical average production rate and historical minimum production rate corresponding to each historical engineering technology type; through the historical average production rate and historical minimum production rate corresponding to each historical engineering technology type, determine the production rate threshold corresponding to each historical engineering technology type, where the production rate threshold is the average of the historical average production rate and historical minimum production rate; based on the production rate threshold corresponding to each historical engineering technology type and the corresponding historical engineering technology type, construct a production rate threshold comparison table; obtain the reserve information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir, and determine the production threshold corresponding to each engineering technology type through the production rate threshold comparison table and the reserve information of the shale oil and gas reservoir to determine the resource threshold.

[0038] In an embodiment of the present specification, different engineering technology types are restricted by production technologies and have different corresponding production rates. Since the resource threshold here is a low threshold and there are differences in the resource thresholds corresponding to different engineering technology types. To ensure the accuracy of the selection of production strategies, using big data technology through the resource information of the shale oil and gas reservoir to construct a historical production dataset corresponding to the shale oil and gas reservoir, it should be noted that the data in the historical production dataset here are the historical production data of shale oil and gas reservoirs in the same or similar situations of the shale oil and gas reservoir, such as geological structures, core sample analysis data, etc. The historical production dataset includes the historical engineering technology types corresponding to multiple historical shale oil and gas reservoirs and the historical predicted reserves and historical actual production volumes corresponding to each historical engineering technology type.

[0039] Classify the historical production dataset according to historical engineering and technology types to obtain historical production data subsets corresponding to each historical engineering and technology type. Based on the historical predicted reserves and historical actual production volumes corresponding to the multiple historical shale oil and gas reservoirs in each such historical production data subset, determine the historical production rate of each such historical shale oil and gas reservoir corresponding to each historical engineering and technology type through the ratio of the historical actual production volume to the historical predicted reserves. Then, obtain the historical minimum production rate (historical lowest production rate) in each historical production data subset, and calculate the historical average production rate corresponding to each historical engineering and technology type based on the historical production rates of the multiple historical shale oil and gas reservoirs and the number of historical shale oil and gas reservoirs.

[0040] Determine the production rate threshold corresponding to each historical engineering and technology type through the average of the historical average production rate and the historical minimum production rate corresponding to each historical engineering and technology type. It should be noted that the calculation rule of the production rate threshold here can also be set according to requirements. Based on the production rate threshold corresponding to each historical engineering and technology type and the corresponding historical engineering and technology type, construct a production rate threshold comparison table. Obtain the reserve information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir, and determine the specified production rate threshold corresponding to each engineering and technology type through the production rate threshold comparison table. Multiply the specified production rate threshold by the reserve information of the shale oil and gas reservoir to determine the production volume threshold corresponding to each engineering and technology type to determine the resource threshold.

[0041] Through the above technical solutions, based on the analysis of historical data, it can more accurately reflect the performance of different engineering and technology types in actual production, help eliminate production strategies with low production volumes, thereby improving the accuracy of decision-making; by comparing the historical average production rate and the minimum production rate of different engineering and technology types, it can also help identify more efficient and reliable production technologies, optimize the selection of engineering and technology, improve production efficiency and resource utilization rate. By setting the production rate threshold, it can ensure that the selected engineering and technology type can reach a certain production rate standard during production, reduce production risks, and avoid resource losses or environmental pollution caused by inappropriate technology selection.

[0042] Determine the production cost information and production difficulty information for each of the specified production strategies, specifically including: obtaining the reserve information, distribution information, and resource quality information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir; determining the reserve complexity, distribution complexity, and quality complexity of the shale oil and gas reservoir according to the resource information; determining the set of index weights corresponding to each type of engineering technology, where the set of index weights includes the reserve complexity weight, distribution complexity weight, and quality complexity weight; determining the theoretical evaluation index of technical complexity corresponding to each specified production strategy through the set of index weights corresponding to each type of engineering technology and the reserve complexity, distribution complexity, and quality complexity of the shale oil and gas reservoir to determine the production difficulty information corresponding to each specified production strategy; predicting the production economic cost of each specified production strategy according to the production plan corresponding to the type of engineering technology in each specified production strategy to determine the production cost information, where the production plan includes multiple production parameters corresponding to each type of engineering technology.

[0043] In one embodiment of this specification, the reserve information, distribution information, and resource quality information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir are obtained. According to this resource information, the reserve complexity, distribution complexity, and quality complexity of the shale oil and gas reservoir are determined. The reserve complexity mainly focuses on the total amount of oil and gas in the reservoir, the exploitability, and the distribution characteristics of this oil and gas in the geological structure. The evaluation content includes the reservoir scale, oil and gas quality, exploitability, and reservoir characteristics. The reservoir scale includes the total volume, thickness, and scope of the reservoir; the oil and gas quality includes the physical properties of the oil and gas, such as density, viscosity, API gravity, etc., and their chemical composition; the exploitability includes evaluating whether the oil and gas in the reservoir are easily exploited by traditional exploitation methods (such as drilling, fracturing, etc.); the reservoir characteristics include the physical properties of the reservoir, such as lithology, porosity, permeability, etc., and the heterogeneity inside the reservoir. Here, through the above evaluation content, each content can be quantified to generate the reserve complexity. For example, if the reserve is widely and unevenly distributed, or if the reserve contains a large amount of non-exploitable parts, then the reserve complexity will be high. The distribution complexity refers to the spatial distribution law of oil and gas in the reservoir, including the continuity and discontinuity of oil and gas, and their distribution in different reservoirs or geological structures. The evaluation content includes oil and gas continuity, reservoir structure, geological structure, and reservoir heterogeneity. The oil and gas continuity mainly evaluates the continuity of the oil and gas distribution in the reservoir, whether there are multiple isolated oil and gas masses; the reservoir structure evaluates the relationship between different reservoirs in the reservoir, such as interlayer connectivity, the development of faults and fractures, etc.; the geological structure evaluates the geological structure where the reservoir is located, such as tectonic types (folds, faults, etc.), sedimentary facies belts, etc., and the influence of these geological structures on the oil and gas distribution; the reservoir heterogeneity evaluates the difference and variability of the physical properties inside the reservoir, such as the spatial variation of porosity and permeability. Through the above evaluation content, each content is quantified to generate the distribution complexity. For example, if the reservoir is distributed in multiple discontinuous regions, or there are multiple different reservoirs, then the distribution complexity will be high. The quality complexity is an index to measure the quality characteristics of the reservoir, including permeability, porosity, oil saturation, etc. If the reservoir quality is poor (such as low permeability, small porosity), then the exploitation difficulty will increase, and the quality complexity will also increase accordingly. The quality complexity can be evaluated through laboratory analysis and logging data.

[0044] Determine the weight of each factor through various methods such as expert evaluation, historical data analysis, and simulation experiments, and determine the set of index weights corresponding to each type of this engineering technology. The set of index weights includes the weight of reserve complexity, the weight of distribution complexity, and the weight of quality complexity. Through the set of index weights corresponding to each type of this engineering technology and the reserve complexity, distribution complexity, and quality complexity of this shale oil and gas reservoir, use the method of weighted summation to determine the theoretical evaluation index of technical complexity corresponding to each specified exploitation strategy, so as to determine the exploitation difficulty information corresponding to each specified exploitation strategy.

[0045] Predict the exploitation economic cost of each specified exploitation strategy according to the exploitation plan corresponding to the engineering technology type in each specified exploitation strategy, so as to determine the exploitation cost information, where the exploitation plan includes multiple exploitation parameters corresponding to each type of this engineering technology. It should be noted that according to the technical suitability analysis, estimate the direct costs such as equipment purchase, material consumption, and labor costs of horizontal well technology and hydraulic fracturing technology. According to the overall reserves, distribution law, and quality characteristics of the shale oil and gas reservoir, make corrections and adjustments to determine the exploitation cost information.

[0046] Step S105, describe the shale oil and gas reservoir according to the exploitation cost information, exploitation difficulty information, and specified predicted resource production information of each specified exploitation strategy, so as to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0047] Describe the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information, and the specified predicted resource production information of each specified exploitation strategy, so as to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir, specifically including: determine the exploitation evaluation index of each exploitation strategy according to the exploitation cost information, the exploitation difficulty information, and the corresponding specified predicted resource production information of each specified exploitation strategy; through the exploitation evaluation index, determine the first specified exploitation strategy that meets the requirements among multiple specified exploitation strategies; through the first specified predicted production information corresponding to the first specified exploitation strategy, the engineering technology type corresponding to the first specified exploitation strategy, and the exploitation plan corresponding to the engineering technology type, describe the reserves and exploitation plan of the shale oil and gas reservoir, so as to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0048] In one embodiment of the present specification, according to the production cost information, the production difficulty information, and the corresponding designated predicted resource production information of each of the designated production strategies, the production evaluation index of each of the production strategies is determined. Among the multiple designated production strategies, the first designated production strategy with the optimal production evaluation index is determined. It should be noted that the standard for the optimal first designated production strategy here is determined by the calculation method of the production evaluation index, aiming to determine the optimal production strategy that matches the shale oil and gas reservoir. The reserves of the shale oil and gas reservoir are described through the first designated predicted production information corresponding to the first designated production strategy, and the production plan of the shale oil and gas reservoir is described through the engineering technology type corresponding to the first designated production strategy and the production plan corresponding to the engineering technology type, so as to determine the shale oil and gas reservoir production description information of the shale oil and gas reservoir.

[0049] Through the above technical solution, based on the predicted production information corresponding to the first designated production strategy, the reserves of the shale oil and gas reservoir can be described more accurately, and then data support can be provided for formulating an efficient production plan, which helps to avoid resource waste during production and ensure the maximization of production efficiency; combined with the engineering technology type corresponding to the production strategy and the corresponding production plan, the production plan of the shale oil and gas reservoir can be described in detail; the customized production plan can better adapt to the geological characteristics and environmental conditions of the oil and gas reservoir, reducing the uncertainty and risk during production; through the precise formulation of the shale oil and gas reservoir production description information, the cost input during production can be better predicted, and the resource allocation can be optimized accordingly, reducing the production cost and improving the economic benefits and competitiveness of the oil and gas production project; based on the production description information of the first designated production strategy and the relevant engineering technology type, the subjectivity and blindness are reduced, and the scientificity and accuracy of decision-making are improved.

[0050] According to the production cost information, the production difficulty information, and the corresponding designated predicted resource production information of each of the designated production strategies, the production evaluation index of each of the production strategies is determined, specifically including: standardizing the production cost information and the production difficulty information to obtain the designated production cost information and the designated production difficulty information of each of the designated production strategies; generating the production evaluation index of each of the production strategies through the ratio of the designated predicted resource production information to the sum of the designated production cost information and the designated production difficulty information of each of the designated production strategies.

[0051] In one embodiment of this specification, the effectiveness of the mining strategy is evaluated by calculating the ratio of the predicted resource output to the sum of the mining cost and the mining difficulty, that is, the mining evaluation index. The higher the mining evaluation index, the higher the resource output that can be obtained under the same mining cost and difficulty. Therefore, the better the effectiveness of the mining strategy. It should be noted that the above calculation method assumes that the mining cost and the mining difficulty have the same unit or can be compared with each other. However, in actual situations, they may have different units and dimensions. Therefore, in practical applications, it may be necessary to perform appropriate standardization or normalization processing on the mining cost and the mining difficulty to ensure that they can be compared on the same scale.

[0052] In addition to the above method, it can also be through the following formula: Where C is the mining evaluation index, P is the predicted resource output, which is used to represent the amount of oil and gas resources expected to be mined under the specified mining strategy, M is the mining cost information, and D is the mining difficulty information. It should be noted that standardization processing is performed on each parameter here to ensure that they can be calculated on the same scale. W1, W2, and W3 respectively represent the parameters of the importance of the three factors of predicted resource output, mining cost information, and mining difficulty information in the evaluation index. These weights can be set according to the actual situation and can usually be determined through expert evaluation, historical data analysis, or optimization algorithms. This mining evaluation index comprehensively considers the three key factors of resource output, mining cost, and mining difficulty. By adjusting the weights, the mining strategy can be optimized according to different goals and preferences. If more emphasis is placed on resource output, W1 can be increased; if it is desired to reduce costs, W2 can be increased; if it is desired to reduce the mining difficulty, W3 can be increased. It should be noted that the above formula is only an example and needs to be adjusted and optimized according to the specific oil and gas reservoir situation, mining technology type, and mining parameters. In addition, other factors can be added or the formula form can be modified according to the actual situation to more accurately reflect the comprehensive effect of the mining strategy.

[0053] Through the above technical solutions, by integrating geological exploration data, geochemical data, and sedimentary environment data, numerical simulations are carried out on multiple processes of shale oil and gas reservoirs. Using numerical simulation technology, the characteristics and resource distribution of shale oil and gas reservoirs can be described more accurately, thereby constructing a more comprehensive and accurate comprehensive evaluation model, which can better reflect the actual situation of shale oil and gas reservoirs, improve the accuracy and comprehensiveness of resource information description, avoid the single drawback of the existing description method in describing the exploitation potential in a single dimension of the oil and gas reservoir, and consider the multi-dimensional characteristics and complexity of shale oil and gas reservoirs; when determining resource information based on the shale oil and gas reservoir dataset, multiple aspects such as reserve information, distribution information, and resource quality information are comprehensively considered. The comprehensive consideration method can ensure that the acquisition of key parameters is closely related to the characteristics of shale oil and gas reservoirs, improving the accuracy and reliability of the description results; dynamically simulating the exploitation process under multiple exploitation strategies can predict the resource production information under different strategies. When determining the exploitation strategy and conducting dynamic simulation, not only the predicted resource production information is considered, but also multiple dimensions such as resource thresholds, exploitation cost information, and exploitation difficulty information are combined for screening. The multi-dimensional consideration method can ensure that the selected exploitation strategy meets the requirements of economic benefits and is technically feasible, providing scientific support for the description of the exploitation plan. Through the description at the reserve resource level and the exploitation plan level, accurate and comprehensive exploitation description information is provided, which can better understand the resource distribution and exploitation potential of shale oil and gas reservoirs, provide technical reference for the subsequent exploitation process, and contribute to the rational allocation and management of resources.

[0054] The embodiments of this specification also provide a verification example. Suppose there is a shale oil and gas reservoir. First, through geological exploration, geochemical analysis, and sedimentary environment research, a dataset of this shale oil and gas reservoir is obtained. The dataset includes: geological exploration data such as seismic data and drilling data, which are used to construct a three-dimensional geological model, and also includes geochemical data, including core sample analysis data such as organic matter information, kerogen type, porosity, and thermal maturity, and also includes sedimentary environment data describing the environmental conditions for the formation and evolution of shale oil and gas reservoirs.

[0055] Construct a 3D geological model using geological exploration data to obtain formation distribution and structural characteristics. Simulate the shale gas generation process through geochemical data to obtain a shale gas generation simulation model. Combine the formation distribution, structural characteristics, and sedimentary environment data to simulate the shale gas migration and accumulation process to obtain a shale gas migration and accumulation simulation model. Integrate the above two simulation models to determine a comprehensive evaluation model for shale oil and gas reservoirs, and generate shale gas generation parameters and storage parameters. Preset multiple exploitation strategies, each of which includes different types of engineering technologies (such as hydraulic fracturing, drilling exploitation, etc.) and corresponding exploitation plans. Use the comprehensive evaluation model and resource information to perform dynamic simulation on each exploitation strategy to predict resource production. Set resource thresholds, including production thresholds corresponding to each type of engineering technology. According to the predicted resource production and resource thresholds, screen out the specified exploitation strategies that meet the preset requirements.

[0056] Determine the reserve complexity, distribution complexity, and quality complexity based on resource information. Determine the set of index weights corresponding to each type of engineering technology. Calculate the theoretical evaluation index of the technical complexity of each specified exploitation strategy to determine the exploitation difficulty information. Predict the exploitation economic cost of each specified exploitation strategy to determine the exploitation cost information. According to the exploitation cost information, exploitation difficulty information, and predicted resource production information, determine the exploitation evaluation index. Among the specified exploitation strategies, select the first specified exploitation strategy that meets the requirements. According to the predicted production information, engineering technology type, and exploitation plan of the first specified exploitation strategy, describe the reserves and exploitation plan of the shale oil and gas reservoir.

[0057] Suppose that after the above steps, two specified exploitation strategies A and B that meet the preset requirements are screened out. Strategy A uses hydraulic fracturing technology, with a predicted resource production of 1 million tons per year, an exploitation cost of 50 million yuan per year, and a medium exploitation difficulty. Strategy B uses drilling exploitation technology, with a predicted resource production of 0.8 million tons per year, an exploitation cost of 40 million yuan per year, and a lower exploitation difficulty. According to the exploitation evaluation index (such as exploitation cost-benefit ratio, exploitation difficulty coefficient, etc.), select Strategy A as the first specified exploitation strategy. Therefore, the reserves of this shale oil and gas reservoir can be described as 1 million tons per year (based on the prediction of Strategy A), and hydraulic fracturing technology is used for exploitation.

[0058] Through the above specific embodiments, the effectiveness and feasibility of the shale oil and gas reservoir exploitation description method are verified. It can comprehensively consider various factors such as geology, geochemistry, and sedimentary environment, and through means such as numerical simulation and dynamic simulation, screen out the exploitation strategies that meet the preset requirements and accurately describe the shale oil and gas reservoir, providing strong technical support for the exploration and development of shale oil and gas reservoirs.

[0059] The embodiments of this specification also provide an exploitation description device for a shale oil and gas reservoir, such as Figure 2As shown, the device includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to: obtain a shale oil and gas reservoir dataset corresponding to a shale oil and gas reservoir, where the shale oil and gas reservoir dataset includes geological exploration data, geochemical data, and sedimentary environment data; perform numerical simulations on multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir dataset to determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir, where the resource information includes reserve information, distribution information, and resource quality information of the shale oil and gas reservoir; determine multiple preset exploitation strategies, and perform dynamic simulations on the exploitation process of the shale oil and gas reservoir through the multiple exploitation strategies and the resource information to determine multiple predicted resource production information corresponding to each exploitation strategy, where each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; screen among the multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy to determine multiple specified exploitation strategies that meet the preset requirements, and determine the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; describe the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information, and the specified predicted resource production information of each specified exploitation strategy to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0060] A shale oil and gas reservoir exploitation description system provided by one or more embodiments of this specification, the system includes: a data acquisition module, configured to acquire a shale oil and gas reservoir data set corresponding to the shale oil and gas reservoir, wherein the shale oil and gas reservoir data set includes geological exploration data, geochemical data, and sedimentary environment data; a resource determination module, configured to perform numerical simulation on multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir data set, determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir, wherein the resource information includes reserve information, distribution information, and resource quality information of the shale oil and gas reservoir; a resource production prediction module, configured to determine multiple preset exploitation strategies, and perform dynamic simulation on the exploitation process of the shale oil and gas reservoir through the multiple exploitation strategies and the resource information, so as to determine multiple predicted resource production information corresponding to each exploitation strategy, wherein each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; an exploitation strategy screening module, configured to screen among multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy, so as to determine multiple specified exploitation strategies meeting the preset requirements, and determine the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; a shale oil and gas reservoir description module, configured to describe the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information, and the specified predicted resource production information of each specified exploitation strategy, so as to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0061] Each embodiment in this specification is described in a progressive manner. For the same or similar parts among the embodiments, reference can be made to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the embodiments of devices, equipment, and non-volatile computer storage media, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiments.

[0062] The above describes specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims can be executed in a different order than in the embodiments and still achieve the desired results. Additionally, the processes depicted in the figures do not necessarily require the specific order or sequential order shown to achieve the desired results. In certain embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0063] The devices and media provided by the embodiments of this specification correspond one-to-one with the methods. Therefore, the devices and media also have beneficial technical effects similar to those of their corresponding methods. Since the beneficial technical effects of the methods have been described in detail above, the beneficial technical effects of the devices and media will not be elaborated here.

[0064] Those skilled in the art should understand that the embodiments of this specification can be provided as a method, a system, or a computer program product. Therefore, this specification can take the form of an all-hardware embodiment, an all-software embodiment, or an embodiment combining software and hardware aspects. Moreover, this specification can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memory, CD-ROM, optical memory, etc.) that contain computer-usable program code.

[0065] This specification is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of this specification. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, as well as the combination of flows and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to the processors of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, such that the instructions executed by the processors of the computer or other programmable data processing devices produce means for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0066] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, such that the instructions stored in the computer-readable memory produce a manufactured article including instruction means that implement the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0067] These computer program instructions can also be loaded onto a computer or other programmable data processing device, such that a series of operation steps are executed on the computer or other programmable device to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0068] In a typical configuration, a computing device includes one or more processors (CPUs), an input / output interface, a network interface, and a memory.

[0069] The memory may include non-permanent memory in the form of computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0070] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transitory media that can be used to store information that can be accessed by a computing device. As defined herein, computer-readable media does not include transitory media such as modulated data signals and carrier waves.

[0071] It should also be noted that the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but also other elements not expressly listed, or elements that are inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0072] The above description is only one or more embodiments of this specification and is not intended to limit this specification. For those skilled in the art, one or more embodiments of this specification can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included within the scope of the claims of this specification.

Claims

1. A method for describing the exploitation of a shale oil and gas reservoir, characterized in that, The method includes: Obtaining a shale oil and gas reservoir data set corresponding to the shale oil and gas reservoir, where the shale oil and gas reservoir data set includes geological exploration data, geochemical data, and sedimentary environment data; Performing numerical simulations on multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir data set to determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir, where the resource information includes reserve information, distribution information, and resource quality information of the shale oil and gas reservoir; Determining a plurality of preset exploitation strategies, and performing dynamic simulations on the exploitation process of the shale oil and gas reservoir through the plurality of exploitation strategies and the resource information to determine a plurality of predicted resource production information corresponding to each exploitation strategy, where each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; Screening among the plurality of exploitation strategies through a preset resource threshold and the plurality of predicted resource production information corresponding to each exploitation strategy to determine a plurality of specified exploitation strategies that meet the preset requirements, and determining the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; Describing the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information, and the specified predicted resource production information of each specified exploitation strategy to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

2. The method for describing the exploitation of a shale oil and gas reservoir according to claim 1, wherein Performing numerical simulations on multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir data set to determine a comprehensive evaluation model of the shale oil and gas reservoir, specifically including: Performing numerical simulations on the shale gas generation process and the shale gas migration and accumulation process of the shale oil and gas reservoir respectively according to the shale oil and gas reservoir data set to determine a shale gas generation simulation model corresponding to the shale gas generation process and a shale gas migration and accumulation simulation model corresponding to the shale gas migration and accumulation process; Determining a comprehensive evaluation model of the shale oil and gas reservoir according to the shale gas generation simulation model and the shale gas migration and accumulation simulation model, so as to generate shale gas generation parameters corresponding to the shale gas generation process and shale gas storage parameters corresponding to the shale gas migration and accumulation process through the comprehensive evaluation model of the shale oil and gas reservoir.

3. The method for describing the exploitation of a shale oil and gas reservoir according to claim 2, characterized in that, Performing numerical simulations on the shale gas generation process and the shale gas migration and accumulation process of the shale oil and gas reservoir respectively according to the shale oil and gas reservoir data set to determine a shale gas generation simulation model corresponding to the shale gas generation process and a shale gas migration and accumulation simulation model corresponding to the shale gas migration and accumulation process, specifically including: Obtaining the geological exploration data in the shale oil and gas reservoir data set, where the geological exploration data includes seismic data and drilling data; Using the seismic data and the drilling data to construct a three-dimensional geological model corresponding to the shale oil and gas reservoir, so as to obtain formation distribution information and structural feature information through the three-dimensional geological model; Obtain the geochemical data, wherein the geochemical data includes core sample analysis data, and the core sample analysis data includes organic matter information, kerogen type information, porosity information, and thermal maturity information in the core sample; Simulate the shale gas generation process through the core sample analysis data to determine a shale gas generation simulation model corresponding to the shale gas generation process; Based on the formation distribution information, the structural feature information, and the sedimentary environment data, simulate the shale gas migration and accumulation process to determine a shale gas migration and accumulation simulation model corresponding to the shale gas migration and accumulation process.

4. The method for describing the exploitation of a shale oil and gas reservoir according to claim 1, characterized in that, Screen among multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy to determine multiple specified exploitation strategies that meet the preset requirements, specifically including: Determine the predicted resource production in the preset resource threshold and the predicted resource production information, wherein the resource threshold includes a production threshold corresponding to each engineering technology type; Based on the engineering technology type corresponding to each exploitation strategy, determine the corresponding type production threshold; Among the multiple exploitation strategies, eliminate at least one exploitation strategy with a predicted resource production lower than the production threshold according to the corresponding type production threshold through the multiple predicted resource production information to determine multiple specified exploitation strategies that meet the preset requirements.

5. The method for describing the exploitation of a shale oil and gas reservoir according to claim 4, characterized in that Determine the preset resource threshold, specifically including: Through the resource information of the shale oil and gas reservoir, use big data technology to construct a historical exploitation data set corresponding to the shale oil and gas reservoir, wherein the historical exploitation data set includes the historical engineering technology types corresponding to multiple historical shale oil and gas reservoirs and the historical predicted reserves and historical actual production volumes corresponding to each historical engineering technology type; Classify the historical exploitation data set according to the historical engineering technology types to obtain a historical exploitation data subset corresponding to each historical engineering technology type; Based on the historical predicted reserves and historical actual production volumes corresponding to the multiple historical shale oil and gas reservoirs in each historical exploitation data subset, determine the historical exploitation rate of each historical shale oil and gas reservoir corresponding to each historical engineering technology type; According to the historical exploitation rate of each historical shale oil and gas reservoir corresponding to each historical engineering technology type, determine the historical average exploitation rate and historical minimum exploitation rate corresponding to each historical engineering technology type; Through the historical average exploitation rate and historical minimum exploitation rate corresponding to each historical engineering technology type, determine the exploitation rate threshold corresponding to each historical engineering technology type, wherein the exploitation rate threshold is the average of the historical average exploitation rate and historical minimum exploitation rate; Based on the exploitation rate threshold corresponding to each historical engineering technology type and the corresponding historical engineering technology type, construct an exploitation rate threshold comparison table; Obtain the reserve information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir, and determine the production threshold corresponding to each engineering technology type through the exploitation rate threshold comparison table and the reserve information of the shale oil and gas reservoir to determine the resource threshold.

6. The method for describing the exploitation of a shale oil and gas reservoir according to claim 1, characterized in that Determine the production cost information and production difficulty information for each of the specified production strategies, specifically including: Obtain the reserve information, distribution information, and resource quality information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir; Determine the reserve complexity, distribution complexity, and quality complexity of the shale oil and gas reservoir based on the resource information; Determine the set of index weights corresponding to each type of engineering technology, where the set of index weights includes reserve complexity weight, distribution complexity weight, and quality complexity weight; Determine the theoretical evaluation index of technical complexity corresponding to each specified production strategy through the set of index weights corresponding to each type of engineering technology and the reserve complexity, distribution complexity, and quality complexity of the shale oil and gas reservoir, so as to determine the production difficulty information corresponding to each specified production strategy; Predict the production economic cost of each specified production strategy based on the production plan corresponding to the type of engineering technology in each specified production strategy, so as to determine the production cost information, where the production plan includes multiple production parameters corresponding to each type of engineering technology; 7. The method for describing the exploitation of a shale oil and gas reservoir according to claim 1, characterized in that, Describe the shale oil and gas reservoir based on the production cost information, the production difficulty information, and the specified predicted resource production information of each specified production strategy, so as to determine the shale oil and gas reservoir production description information of the shale oil and gas reservoir, specifically including: Determine the production evaluation index of each production strategy based on the production cost information, the production difficulty information, and the corresponding specified predicted resource production information of each specified production strategy; Determine the first specified production strategy that meets the requirements among multiple specified production strategies through the production evaluation index; Describe the reserves and production plan of the shale oil and gas reservoir through the first specified predicted production information corresponding to the first specified production strategy, the type of engineering technology corresponding to the first specified production strategy, and the production plan corresponding to the type of engineering technology, so as to determine the shale oil and gas reservoir production description information of the shale oil and gas reservoir; 8. The description method of shale oil and gas reservoir exploitation according to claim 7, characterized in that Determine the production evaluation index of each production strategy based on the production cost information, the production difficulty information, and the corresponding specified predicted resource production information of each specified production strategy, specifically including: Perform standardization processing on the production cost information and the production difficulty information to obtain the specified production cost information and the specified production difficulty information of each specified production strategy; Generate the production evaluation index of each specified production strategy through the ratio of the specified predicted resource production information to the sum of the specified production cost information and the specified production difficulty information of each specified production strategy; 9. An exploitation description device for a shale oil and gas reservoir, characterized in that, The device includes: At least one processor; and, A memory communicatively connected to the at least one processor; wherein, The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can: Obtain a shale oil and gas reservoir dataset corresponding to the shale oil and gas reservoir, where the shale oil and gas reservoir dataset includes geological exploration data, geochemical data, and sedimentary environment data; Based on the shale oil and gas reservoir dataset, numerically simulate multiple processes of the shale oil and gas reservoir to determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir, wherein the resource information includes reserve information, distribution information and resource quality information of the shale oil and gas reservoir; Determine multiple preset exploitation strategies, and dynamically simulate the exploitation process of the shale oil and gas reservoir through the multiple exploitation strategies and the resource information, so as to determine multiple predicted resource production information corresponding to each exploitation strategy, wherein each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; Screen among multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy, so as to determine multiple specified exploitation strategies that meet the preset requirements, and determine the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; Describe the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information and the specified predicted resource production information of each specified exploitation strategy, so as to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

10. A description system for shale oil and gas reservoir exploitation, characterized in that, The system includes: A data acquisition module, configured to acquire a shale oil and gas reservoir dataset corresponding to a shale oil and gas reservoir, wherein the shale oil and gas reservoir dataset includes geological exploration data, geochemical data and sedimentary environment data; A resource determination module, configured to numerically simulate multiple processes of the shale oil and gas reservoir according to the shale oil and gas reservoir dataset, determine a comprehensive evaluation model of the shale oil and gas reservoir, so as to determine the resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir, wherein the resource information includes reserve information, distribution information and resource quality information of the shale oil and gas reservoir; A resource production prediction module, configured to determine multiple preset exploitation strategies, and dynamically simulate the exploitation process of the shale oil and gas reservoir through the multiple exploitation strategies and the resource information, so as to determine multiple predicted resource production information corresponding to each exploitation strategy, wherein each exploitation strategy includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; An exploitation strategy screening module, configured to screen among multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy, so as to determine multiple specified exploitation strategies that meet the preset requirements, and determine the exploitation cost information and exploitation difficulty information of each specified exploitation strategy; A shale oil and gas reservoir description module, configured to describe the shale oil and gas reservoir according to the exploitation cost information, the exploitation difficulty information and the specified predicted resource production information of each specified exploitation strategy, so as to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

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