Shale oil and gas reservoir mining description method, equipment and system

Abstract

The embodiment of the invention discloses a shale oil and gas reservoir exploitation description method, equipment and system, and relates to the technical field of oil and gas reservoir exploitation, and the method comprises the steps: obtaining a shale oil and gas reservoir data set corresponding to a shale oil and gas reservoir; according to the shale oil and gas reservoir data set, carrying out numerical simulation on a plurality of processes of the shale oil and gas reservoir, determining a shale oil and gas reservoir comprehensive evaluation model, and determining resource information through the shale oil and gas reservoir comprehensive evaluation model; determining a plurality of preset mining strategies, and dynamically simulating the mining process to determine a plurality of pieces of predicted resource yield information corresponding to each mining strategy; screening the mining strategies through a preset resource threshold value and the plurality of pieces of predicted resource yield information corresponding to each mining strategy to determine a plurality of specified mining strategies meeting preset requirements, and determining mining cost information and mining difficulty information of each specified mining strategy; and describing the shale oil and gas reservoir to determine the mining description information of the shale oil and gas reservoir.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas reservoir exploitation, and in particular to a method, device and system for describing the exploitation of shale oil and gas reservoirs. Background Art

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

[0003] At present, the description of the exploitation potential of shale oil and gas reservoirs mainly relies on the comprehensive analysis of geological structure, formation conditions, source rock characteristics, reservoir conditions, fluid properties and distribution. 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, the key parameters of shale gas resource evaluation, such as geochemical parameters, reservoir physical parameters, rock mineralogy parameters, etc., have many difficulties in their change rules and accurate acquisition, which directly affects the rationality of resource calculation and favorable area optimization results; in addition, compared with conventional oil and gas, shale gas has special aggregation mechanism and enrichment conditions, no clear physical boundaries, and lacks resource calculation methods for shale gas characteristics. In addition, the exploitation of shale oil and gas needs to rely on specific engineering technologies, such as horizontal well technology and hydraulic fracturing technology. 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 under a single dimension of oil and gas reservoirs, 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 the present 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 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 the shale oil and gas reservoir, resulting in limited accuracy and comprehensiveness of the description results of the shale oil and gas reservoir.

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

[0006] One or more embodiments of the present specification provide a method for describing the exploitation of a shale oil and gas reservoir, the method comprising: obtaining 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 comprises 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 data set, determining a comprehensive evaluation model of the shale oil and gas reservoir, and determining 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 comprises reserve information, distribution information and resource quality information of the shale oil and gas reservoir; determining multiple pre-set exploitation strategies, and evaluating the exploitation of the shale oil and gas reservoir through the multiple exploitation strategies and the resource information. The mining process is dynamically simulated to determine multiple predicted resource production information corresponding to each of the mining strategies, wherein each of the mining strategies includes an engineering technology type and a mining plan corresponding to the engineering technology type; multiple mining strategies are screened through pre-set resource thresholds and the multiple predicted resource production information corresponding to each of the mining strategies to determine multiple designated mining strategies that meet preset requirements, and the mining cost information and mining difficulty information of each of the designated mining strategies are determined; the shale oil and gas reservoir is described based on the mining cost information, the mining difficulty information and the specified predicted resource production information of each of the designated mining strategies to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

[0007] One or more embodiments of this specification provide a shale oil and gas reservoir production description device, 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, the instructions being executed by the at least one processor to enable the at least one processor to:

[0011] 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; 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, and determine 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; determine multiple pre-set mining strategies, and perform dynamic simulation on the mining process of the shale oil and gas reservoir through the multiple mining strategies and the resource information, so as to determine each of the A plurality of predicted resource production information corresponding to a mining strategy, wherein each mining strategy includes an engineering technology type and a mining plan corresponding to the engineering technology type; screening is performed among the plurality of mining strategies through a preset resource threshold and the plurality of predicted resource production information corresponding to each mining strategy to determine a plurality of designated mining strategies that meet preset requirements, and to determine the mining cost information and mining difficulty information of each designated mining strategy; the shale oil and gas reservoir is described according to the mining cost information, the mining difficulty information and the specified predicted resource production information of each designated mining strategy to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

[0012] One or more embodiments of the present specification provide a shale oil and gas reservoir exploitation description system, the system comprising: a data acquisition module, used 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, used to perform numerical simulations 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, and determine 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, used to determine multiple pre-set exploitation strategies, and predict the shale oil production through the multiple exploitation strategies and the resource information. A dynamic simulation is performed on the exploitation process of a gas reservoir to determine a plurality of predicted resource production information corresponding to each of the exploitation strategies, wherein each of the exploitation strategies includes an engineering technology type and an exploitation plan corresponding to the engineering technology type; a exploitation strategy screening module is used to screen a plurality of exploitation strategies through a preset resource threshold and the plurality of predicted resource production information corresponding to each of the exploitation strategies to determine a plurality of designated exploitation strategies that meet preset requirements, and to determine the exploitation cost information and the exploitation difficulty information of each of the designated exploitation strategies; a shale oil and gas reservoir description module is used 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 of the designated exploitation strategies to determine the shale oil and gas reservoir exploitation description information of the shale oil and gas reservoir.

[0013] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects: through the above technical solution, by integrating geological exploration data, geochemical data and sedimentary environment data, numerical simulation of multiple processes of shale oil and gas reservoirs can be carried out, and the numerical simulation technology can be used to more accurately describe the characteristics and resource distribution of shale oil and gas reservoirs, 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 disadvantage of existing description methods in describing the exploitation potential under a single dimension of oil and gas reservoirs, and take into account the multi-dimensional characteristics and complexity of shale oil and gas reservoirs; when determining resource information based on shale oil and gas reservoir data sets, multiple aspects such as reserve information, distribution information and resource quality information will be comprehensively considered, and the comprehensive consideration method can Ensure that the acquisition of key parameters is closely related to the characteristics of shale oil and gas reservoirs, and improve the accuracy and reliability of the description results; dynamically simulate the mining process under multiple mining strategies, and predict the resource production information under different strategies. When determining the mining strategy and conducting dynamic simulation, not only the predicted resource production information is considered, but also multiple dimensions such as resource threshold, mining cost information and mining difficulty information are combined for screening. The multi-dimensional consideration method can ensure that the selected mining strategy not only meets the requirements of economic benefits, but also has technical feasibility, providing scientific support for the description of mining plans. Through the description of the reserve resource level and the description of the mining plan level, accurate and comprehensive mining description information is provided, which can better understand the resource distribution and mining potential of shale oil and gas reservoirs, provide technical reference for subsequent mining processes, and help to achieve reasonable 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 briefly introduces the drawings required for use in the embodiments or the prior art description. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. In the drawings:

[0015] Figure 1 A schematic diagram of a process for describing a method for exploiting shale oil and gas reservoirs provided in an embodiment of this specification;

[0016] Figure 2 A schematic diagram of the structure of a shale oil and gas reservoir exploitation description device provided in an embodiment of this specification. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments of this specification, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this specification.

[0018] The embodiment of this specification provides a method for describing the exploitation of shale oil and gas reservoirs. It should be noted that the execution subject in the embodiment of this specification can be a server or any device with data processing capabilities. Figure 1 A schematic diagram of a method for producing shale oil and gas reservoirs provided in the embodiments of this specification is shown in FIG. Figure 1 As shown, it mainly includes the following steps:

[0019] Step S101, obtaining a shale oil and gas reservoir data set corresponding to the shale oil and gas reservoir.

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

[0021] In one embodiment of the present specification, in the exploration of shale oil and gas reservoirs, a shale oil and gas reservoir data set is obtained. Geological exploration data include seismic data, drilling data, and may also include outcrop data. Seismic data is obtained by obtaining underground reflection wave data through seismic exploration technology. Drilling data includes core description, logging data (such as sound waves, resistivity, natural gamma, etc.), drilling logs, etc. Outcrop data refers to the outcrop characteristics of rock formations directly observed on the ground. Geochemical data include 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 depends on laboratory analysis and geophysical interpretation. Take nuclear magnetic resonance (NMR) and 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. Chromatography-mass spectrometry (GC-MS) is used to analyze organic compounds in core samples, which can determine the type and maturity of organic matter (such as through biomarker analysis). In addition, logging data (such as acoustic waves, density, neutrons, resistivity, etc.) can also be used to estimate parameters such as porosity and permeability. Sedimentary environmental data include regional geological information, which is used to display regional structure, stratigraphic distribution and other information, as well as sedimentary phase analysis information, including the rock type of sedimentary rocks, and the sedimentary environment (such as rivers, lakes, oceans, etc.). In addition, paleontological data, such as fossil records, can be included to infer the depositional era and paleoenvironment.

[0022] Step S102, based on the shale oil and gas reservoir data set, numerical simulation is performed 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 resource information of the shale oil and gas reservoir through the comprehensive evaluation model of the shale oil and gas reservoir.

[0023] In one embodiment of the present specification, multiple data in a shale oil and gas reservoir data set are used to simulate multiple processes of the shale oil and gas reservoir, and a comprehensive evaluation model of the shale oil and gas reservoir is generated, 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 the reserve information, distribution information and resource quality information of the shale oil and gas reservoir. Considering the particularity of shale gas, a special resource calculation method is developed for the characteristics of shale oil and gas reservoirs such as source-reservoir integration and in-situ retention, taking into account multiple processes such as shale gas generation, migration, and accumulation, so as to more accurately evaluate the reserve and other resource information of shale oil and gas reservoirs.

[0024] According to the shale oil and gas reservoir data set, multiple processes of the shale oil and gas reservoir are numerically simulated to determine a comprehensive evaluation model of the shale oil and gas reservoir, specifically including: according to the shale oil and gas reservoir data set, the shale gas generation process and the shale gas migration and accumulation process of the shale oil and gas reservoir are numerically simulated respectively 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; according to the shale gas generation simulation model and the shale gas migration and accumulation simulation model, a comprehensive evaluation model of the shale oil and gas reservoir is determined 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.

[0025] In one embodiment of the present specification, in view of the characteristics of shale oil and gas reservoirs such as integrated source and reservoir and in-situ retention, the generation, migration, and accumulation of shale gas are deeply considered, and a comprehensive evaluation model is constructed in combination with the geological characteristics, physical properties, chemical composition, and occurrence state of shale gas. In the process of shale gas generation, factors such as organic matter type and thermal maturity in shale are considered, and the generation of shale gas is estimated through laboratory simulation or geological history simulation, which usually involves the analysis of kerogen type, thermal maturity evaluation (such as using Ro value) and chemical process simulation of organic matter conversion to hydrocarbons, and the shale gas generation simulation model corresponding to the shale gas generation process is determined. In the process of shale gas migration and accumulation, shale gas will be affected by multiple factors such as formation pressure, temperature, pore structure, etc. after generation, so that it migrates and accumulates in the shale layer. The resource calculation method will consider the influence of the above factors, and simulate the migration and accumulation process of shale gas through geological modeling and numerical simulation technology to determine the shale gas migration and accumulation simulation model. The generation, migration, and accumulation of shale gas are incorporated into a comprehensive evaluation model to determine the comprehensive evaluation model of shale oil and gas reservoirs. The reserves of shale oil and gas reservoirs are accurately evaluated by combining data from geological exploration, geophysics, geochemistry, and other aspects. The above evaluation method can not only give the overall reserves of shale oil and gas reservoirs, but also evaluate their distribution patterns, quality characteristics, etc., providing a scientific basis for subsequent exploration and development.

[0026] According to the shale oil and gas reservoir data set, numerical simulations are respectively performed on the shale gas generation process and the shale gas migration and accumulation process of the shale oil and gas reservoir 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, specifically including: obtaining geological exploration data in the 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, constructing a three-dimensional geological model corresponding to the shale oil and gas reservoir, so as to obtain the stratum distribution information and structural characteristics through the three-dimensional geological model; The invention relates to a method for obtaining 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; simulating 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; simulating the shale gas migration and accumulation process based on the formation distribution information, the structural characteristic information and the sedimentary environment data to determine a shale gas migration and accumulation simulation model corresponding to the shale gas migration and accumulation process.

[0027] In one embodiment of the present specification, seismic data and drilling data in the geological exploration data in the shale oil and gas reservoir data set are obtained, and a three-dimensional geological model corresponding to the shale oil and gas reservoir is constructed using the seismic data and the drilling data, and the three-dimensional geological model is analyzed to obtain the stratigraphic distribution information and structural characteristic information of the shale oil and gas reservoir. The geochemical data is obtained, and 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 the core sample analysis data, the shale gas generation process is simulated to determine the shale gas generation simulation model corresponding to the shale gas generation process. Based on the stratigraphic distribution information, the structural characteristic information, and the sedimentary environment data, the shale gas migration and aggregation process is simulated to determine the shale gas migration and aggregation simulation model corresponding to the shale gas migration and aggregation process.

[0028] Through the above technical solutions, the comprehensive evaluation model can fully consider the complex processes of shale oil and gas reservoir generation, migration, and accumulation, and combine multidisciplinary data such as geology, physics, and chemistry to make a more accurate assessment of the reserves of shale oil and gas reservoirs, reduce assessment errors, and improve the reliability of assessment results and the pertinence of shale oil and gas reservoirs; through the comprehensive evaluation model, we can have a deeper understanding of the geological characteristics and distribution of shale oil and gas reservoirs, optimize exploration and development strategies, improve exploration and development efficiency, and reduce development costs. Accurate reserve assessment helps to formulate reasonable mining plans and avoid over-exploitation and waste of resources. At the same time, the comprehensive evaluation model can also take into account environmental factors and social impacts to achieve sustainable development and utilization of shale gas resources.

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

[0030] 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 the present specification, multiple pre-set mining strategies are determined. The mining strategies here refer to the technologies and schemes used when mining this shale oil and gas reservoir, that is, each mining strategy includes an engineering technology type and a mining scheme corresponding to the engineering technology type. It should be noted that multiple mining strategies correspond to multiple engineering technology types, such as horizontal well technology, hydraulic fracturing technology, etc. Through multiple mining strategies and resource information, the mining process of shale oil and gas reservoirs is dynamically simulated to determine multiple predicted resource production information corresponding to each mining strategy. Dynamic simulation technology is a technology that uses numerical methods to simulate the mining process of shale gas reservoirs. By simulating the changes in production under different mining schemes, the mining scheme can be optimized and the resource utilization efficiency can be improved. First, a numerical model is established. According to the geological characteristics, physical properties, mining conditions and other factors of the shale gas reservoir, a numerical model is established. This model can simulate the migration, diffusion, desorption and other processes of shale gas under the mining scheme. It should be noted that the difference between the numerical model here and the comprehensive evaluation model of shale oil and gas reservoirs is that the function of the comprehensive evaluation model of shale oil and gas reservoirs is to predict the reserves and other storage resource information of shale oil and gas reservoirs, while the function of the numerical model here is to simulate the migration, diffusion, desorption and other processes of shale gas under the mining plan, and to simulate the production changes under different mining plans by adjusting the mining technology and mining parameters, so as to determine the multiple predicted resource production information corresponding to each mining strategy.

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

[0033] Step S104, screening multiple mining strategies through pre-set resource thresholds and multiple predicted resource production information corresponding to each mining strategy to determine multiple designated mining strategies that meet preset requirements, and determine the mining cost information and mining difficulty information of each designated mining strategy.

[0034] Through the preset resource threshold and the multiple predicted resource production information corresponding to each mining strategy, screening is performed among multiple mining strategies to determine multiple specified mining strategies that meet the preset requirements, specifically including: determining the preset resource threshold and the predicted resource production in the predicted resource production information, wherein the resource threshold includes the production threshold corresponding to each engineering technology type; based on the engineering technology type corresponding to each mining strategy, determining the corresponding type production threshold; through the multiple predicted resource production information, according to the corresponding type production threshold, among the multiple mining strategies, eliminating at least one mining strategy whose predicted resource production is lower than the production threshold from the multiple mining strategies to determine multiple specified mining strategies that meet the preset requirements.

[0035] In one embodiment of the present specification, after each mining strategy corresponds to multiple predicted resource production information, the mining strategies need to be eliminated and screened. Generally, the actual production volume of shale oil and gas reservoirs in the same area is different under different mining technologies and mining plans. The mining strategies with lower production should be eliminated here. Determine the pre-set resource threshold, which includes the production threshold corresponding to each engineering technology type. According to the engineering technology type corresponding to each mining strategy, match the threshold to determine the corresponding type production threshold. According to the corresponding type production threshold, among multiple mining strategies, at least one mining strategy with a predicted resource production lower than the production threshold is eliminated to determine multiple specified mining strategies that meet the preset requirements.

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

[0037] Determining a preset resource threshold specifically includes: constructing a historical mining data set corresponding to the shale oil and gas reservoir by using the resource information of the shale oil and gas reservoir and the big data technology, wherein the historical mining data set includes historical engineering technology types corresponding to multiple historical shale oil and gas reservoirs and historical predicted reserves and historical actual mining volumes corresponding to each historical engineering technology type; classifying the historical mining data set according to the historical engineering technology type to obtain a historical mining data subset corresponding to each historical engineering technology type; determining a historical mining rate of each historical shale oil and gas reservoir corresponding to each historical engineering technology type based on the historical predicted reserves and historical actual mining volumes corresponding to the multiple historical shale oil and gas reservoirs in each historical mining data subset; and determining a historical mining rate of each historical shale oil and gas reservoir corresponding to each historical engineering technology type according to the historical engineering technology type. According to the historical production rate of each historical shale oil and gas reservoir corresponding to the type, the historical average production rate and the historical minimum production rate corresponding to each historical engineering technology type are determined; through the historical average production rate and the historical minimum production rate corresponding to each historical engineering technology type, the production rate threshold corresponding to each historical engineering technology type is determined, wherein the production rate threshold is the average of the historical average production rate and the historical minimum production rate; based on the production rate threshold corresponding to each historical engineering technology type and the corresponding historical engineering technology type, a production rate threshold comparison table is constructed; the reserve information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir is obtained, and the production threshold corresponding to each engineering technology type is determined through the production rate threshold comparison table and the reserve information of the shale oil and gas reservoir, so as to determine the resource threshold.

[0038] In one embodiment of the present specification, different engineering technology types are restricted by mining technology, and the corresponding mining rates are different. Since the resource threshold here is a low threshold, and there are differences in the resource thresholds corresponding to different engineering technology types. In order to ensure the accuracy of mining strategy screening, the historical mining data set corresponding to the shale oil and gas reservoir is constructed by using big data technology through the resource information of the shale oil and gas reservoir. It should be noted that the data in the historical mining data set here are historical mining data of shale oil and gas reservoirs with the same or similar conditions as the shale oil and gas reservoir, such as geological structure, core sample analysis data, etc. The historical mining data set includes historical engineering technology types corresponding to multiple historical shale oil and gas reservoirs and historical predicted reserves and historical actual mining volumes corresponding to each historical engineering technology type.

[0039] According to the historical engineering technology type, the historical mining data set is classified to obtain the historical mining data subset corresponding to each historical engineering technology type. Based on the historical predicted reserves and historical actual production corresponding to the multiple historical shale oil and gas reservoirs in each historical mining data subset, the historical production rate of each historical shale oil and gas reservoir corresponding to each historical engineering technology type is determined by the ratio of historical actual production to historical predicted reserves, and then the historical minimum production rate (historical minimum production rate) is obtained in each historical mining data subset, and the historical production rates of multiple historical shale oil and gas reservoirs and the number of historical shale oil and gas reservoirs are used to calculate the historical average production rate corresponding to each historical engineering technology type.

[0040] The mining rate threshold corresponding to each historical engineering technology type is determined by the average of the historical average mining rate and the historical minimum mining rate corresponding to each historical engineering technology type. It should be noted that the calculation rules of the mining rate threshold here can also be set according to needs. Based on the mining rate threshold corresponding to each historical engineering technology type and the corresponding historical engineering technology type, a mining rate threshold comparison table is constructed. The reserve information of the shale oil and gas reservoir in the resource information of the shale oil and gas reservoir is obtained, and the specified mining rate threshold corresponding to each engineering technology type is determined through the mining rate threshold comparison table. The product of the specified mining rate threshold and the reserve information of the shale oil and gas reservoir is determined to determine the production threshold corresponding to each engineering technology type to determine the resource threshold.

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

[0042] Determine the mining cost information and mining difficulty information of each designated mining strategy, 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; determine the reserve complexity, distribution complexity and quality complexity of the shale oil and gas reservoir based on the resource information; determine the indicator weight set corresponding to each of the engineering technology types, wherein the indicator weight set includes the reserve complexity weight, the distribution complexity weight and the quality complexity weight; determine the technical complexity theoretical evaluation index corresponding to each of the designated mining strategies through the indicator weight set corresponding to each of the engineering technology types and the reserve complexity, distribution complexity and quality complexity of the shale oil and gas reservoir, so as to determine the mining difficulty information corresponding to each of the designated mining strategies; predict the mining economic cost of each of the designated mining strategies based on the mining plan corresponding to the engineering technology type in each of the designated mining strategies, so as to determine the mining cost information, wherein the mining plan includes multiple mining parameters corresponding to each of the engineering technology types.

[0043] In one embodiment of the present 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 the 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 oil and gas reservoir, the exploitability and the distribution characteristics of these oil and gas in the geological structure. The evaluation content includes the scale of the oil and gas reservoir, the quality of oil and gas, the exploitability and the reservoir characteristics. The scale of the oil and gas reservoir includes the total volume, thickness and range of the oil and gas reservoir; the quality of oil and gas includes the physical properties of oil and gas, such as density, viscosity, API gravity, etc., and their chemical composition; exploitability includes evaluating whether the oil and gas in the oil and gas reservoir are easy to be exploited through traditional exploitation methods (such as drilling, fracturing, etc.); reservoir characteristics include physical properties such as reservoir lithology, porosity, permeability, and the heterogeneity inside the reservoir. Here, each item can be quantified through the above evaluation content to generate reserve complexity. For example, if the reserves are widely and unevenly distributed, or if the reserves contain a large amount of unrecoverable parts, then the reserve complexity will be high. Distribution complexity refers to the spatial distribution pattern of oil and gas in the oil and gas reservoir, including the continuity, discontinuity of oil and gas, and their distribution in different reservoirs or geological structures. The evaluation contents include oil and gas continuity, reservoir structure, geological structure and reservoir heterogeneity. Oil and gas continuity is mainly evaluated by evaluating the continuity of oil and gas distribution in the oil and gas reservoir, whether there are multiple isolated oil and gas clusters; reservoir structure is evaluated by evaluating the relationship between different reservoirs in the oil and gas reservoir, such as interlayer connectivity, the development of faults and fractures, etc.; geological structure is evaluated by evaluating the geological structure in which the oil and gas reservoir is located, such as structural type (folds, faults, etc.), sedimentary facies, etc., and the impact of these geological structures on oil and gas distribution; reservoir heterogeneity is evaluated by evaluating the differences and variability of physical properties inside the reservoir, such as the spatial changes in porosity and permeability. Through the above evaluation contents, each item is quantified to generate distribution complexity. For example, if the oil and gas reservoirs are distributed in multiple discontinuous areas or there are multiple different reservoirs, the distribution complexity will be high. Quality complexity is an indicator to measure the quality characteristics of oil and gas reservoirs, including permeability, porosity, oil saturation, etc. If the quality of the oil and gas reservoir is poor (such as low permeability and low porosity), the difficulty of mining will increase, and the quality complexity will increase accordingly. The quality complexity can be evaluated through laboratory analysis and logging data.

[0044] The weight of each factor is determined through expert evaluation, historical data analysis, simulation experiments and other methods, and the indicator weight set corresponding to each type of engineering technology is determined. The indicator weight set includes reserve complexity weight, distribution complexity weight and quality complexity weight. Through the indicator weight set corresponding to each type of engineering technology and the reserve complexity, distribution complexity and quality complexity of the shale oil and gas reservoir, the technical complexity theoretical evaluation index corresponding to each designated mining strategy is determined by weighted summation to determine the mining difficulty information corresponding to each designated mining strategy.

[0045] According to the mining scheme corresponding to the engineering technology type in each designated mining strategy, the mining economic cost of each designated mining strategy is predicted to determine the mining cost information, wherein the mining scheme includes multiple mining parameters corresponding to each engineering technology type. It should be noted that the direct costs such as equipment purchase, material consumption, and labor costs of horizontal well technology and hydraulic fracturing technology are estimated based on the technical adaptability analysis. According to the overall reserves, distribution patterns, and quality characteristics of shale oil and gas reservoirs, corrections and adjustments are made to determine the mining cost information.

[0046] Step S105, describing the shale oil and gas reservoir according to the mining cost information, mining difficulty information and designated predicted resource output information of each designated mining strategy, so as to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

[0047] The shale oil and gas reservoir is described according to the mining cost information, the mining difficulty information and the designated predicted resource production information of each designated mining strategy to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir, specifically including: determining the mining evaluation index of each mining strategy according to the mining cost information, the mining difficulty information and the corresponding designated predicted resource production information of each designated mining strategy; determining a first designated mining strategy that meets the requirements among multiple designated mining strategies through the mining evaluation index; describing the reserves and mining plan of the shale oil and gas reservoir through the first designated predicted production information corresponding to the first designated mining strategy and the engineering technology type corresponding to the first designated mining strategy and the mining plan corresponding to the engineering technology type to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

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

[0049] Through the above technical scheme, based on the predicted production information corresponding to the first designated mining strategy, the reserves of shale oil and gas reservoirs can be described more accurately, thereby providing data support for the formulation of efficient mining plans, helping to avoid waste of resources in the mining process and ensure maximum mining efficiency; combined with the engineering technology type corresponding to the mining strategy and the corresponding mining plan, the mining plan for shale oil and gas reservoirs can be described in detail; customized mining plans can better adapt to the geological characteristics and environmental conditions of oil and gas reservoirs, and reduce uncertainties and risks in the mining process; through the precise formulation of shale oil and gas reservoir mining description information, the cost input in the mining process can be better predicted, and resource allocation can be optimized accordingly, mining costs can be reduced, and the economic benefits and competitiveness of oil and gas mining projects can be improved; based on the mining description information of the first designated mining strategy and related engineering technology types, subjectivity and blindness can be reduced, and the scientificity and accuracy of decision-making can be improved.

[0050] Based on the mining cost information, the mining difficulty information and the corresponding designated predicted resource output information of each designated mining strategy, the mining evaluation index of each of the designated mining strategies is determined, specifically including: standardizing the mining cost information and the mining difficulty information to obtain the designated mining cost information and the designated mining difficulty information of each of the designated mining strategies; generating the mining evaluation index of each of the designated mining strategies by the ratio of the designated predicted resource output information to the sum of the designated mining cost information and the designated mining difficulty information of each of the designated mining strategies.

[0051] In one embodiment of the present specification, the effect 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, and therefore the better the effect 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, but in actual situations, they may have different units and dimensions. Therefore, in practical applications, it may be necessary to properly standardize or normalize the mining cost and the mining difficulty to ensure that they can be compared on the same scale.

[0052] In addition to the above methods, you can also use the following formula: Among them, C is the mining evaluation index, P is the predicted resource output, which is used to indicate the amount of oil and gas resources that can 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 the various parameters are standardized 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 actual conditions and are usually determined by 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 you pay more attention to resource output, you can increase W1; if you want to reduce costs, you can increase W2; if you want to reduce mining difficulty, you can increase W3. 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 conditions, mining technology types and mining parameters. In addition, other factors can be added or the formula form can be modified according to actual conditions to more accurately reflect the comprehensive effect of the mining strategy.

[0053] Through the above technical scheme, by integrating geological exploration data, geochemical data and sedimentary environment data, numerical simulation of multiple processes of shale oil and gas reservoirs is carried out. By 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 disadvantage of existing description methods in describing the exploitation potential under the single dimension of oil and gas reservoirs, and take into account the multi-dimensional characteristics and complexity of shale oil and gas reservoirs; when determining resource information based on shale oil and gas reservoir data sets, multiple aspects such as reserve information, distribution information and resource quality information will be comprehensively considered. The comprehensive consideration method can ensure the acquisition of key parameters and shale oil and gas reservoirs. The characteristics are closely related, which improves the accuracy and reliability of the description results; the mining process under multiple mining strategies is dynamically simulated to predict the resource output information under different strategies. When determining the mining strategy and conducting dynamic simulation, not only the predicted resource output information is considered, but also multiple dimensions such as resource threshold, mining cost information and mining difficulty information are screened. The multi-dimensional consideration method can ensure that the selected mining strategy meets the requirements of economic benefits and is technically feasible, providing scientific support for the description of mining plans. Through the description of reserve resources and the description of mining plans, accurate and comprehensive mining description information is provided, which can better understand the resource distribution and mining potential of shale oil and gas reservoirs, provide technical reference for subsequent mining processes, and help to achieve reasonable allocation and management of resources.

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

[0055] Use geological exploration data to build a three-dimensional geological model to obtain the distribution and structural characteristics of the formation. Use geochemical data to simulate the shale gas generation process and 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 and obtain a shale gas migration and accumulation simulation model. Combine the above two simulation models to determine the comprehensive evaluation model of shale oil and gas reservoirs and generate shale gas generation parameters and storage parameters. Preset multiple mining strategies, each strategy includes different engineering technology types (such as hydraulic fracturing, drilling mining, etc.) and corresponding mining plans. Use the comprehensive evaluation model and resource information to dynamically simulate each mining strategy and predict resource production. Set resource thresholds, including the production threshold corresponding to each engineering technology type. According to the predicted resource production and resource thresholds, select the specified mining strategy that meets the preset requirements.

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

[0057] Assume that after the above steps, two designated mining strategies A and B that meet the preset requirements are selected. Strategy A uses hydraulic fracturing technology, with a predicted resource output of 1 million tons / year, a mining cost of 50 million yuan / year, and a medium mining difficulty. Strategy B uses drilling mining technology, with a predicted resource output of 800,000 tons / year, a mining cost of 40 million yuan / year, and a low mining difficulty. According to mining evaluation indicators (such as mining cost-effectiveness ratio, mining difficulty coefficient, etc.), strategy A is selected as the first designated mining strategy. Therefore, it can be described that the reserves of the shale oil and gas reservoir are 1 million tons / year (based on the prediction of strategy A), and hydraulic fracturing technology is used for mining.

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

[0059] The present specification also provides a shale oil and gas reservoir mining description device, such as Figure 2As shown, the device includes: at least one processor; and a memory connected to the at least one processor in communication; wherein the memory stores instructions that can be executed 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 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; perform numerical simulation on multiple processes of the shale oil and gas reservoir based on the shale oil and gas reservoir data set, determine a shale oil and gas reservoir comprehensive evaluation model, and determine 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; determine multiple pre-set exploitation strategies , through the multiple mining strategies and the resource information, the mining process of the shale oil and gas reservoir is dynamically simulated to determine the multiple predicted resource production information corresponding to each of the mining strategies, wherein each of the mining strategies includes an engineering technology type and a mining plan corresponding to the engineering technology type; through the pre-set resource threshold and the multiple predicted resource production information corresponding to each of the mining strategies, the multiple mining strategies are screened to determine the multiple designated mining strategies that meet the preset requirements, and the mining cost information and mining difficulty information of each of the designated mining strategies are determined; according to the mining cost information, the mining difficulty information and the designated predicted resource production information of each of the designated mining strategies, the shale oil and gas reservoir is described to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

[0060] One or more embodiments of the present specification provide a shale oil and gas reservoir exploitation description system, the system comprising: a data acquisition module, used 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, used to perform numerical simulations on multiple processes of the shale oil and gas reservoir based on the shale oil and gas reservoir data set, determine a shale oil and gas reservoir comprehensive evaluation model, and determine 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, used to determine multiple pre-set exploitation strategies, and predict the shale oil production through the multiple exploitation strategies and the resource information. A dynamic simulation is performed on the exploitation process of a gas reservoir 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; a mining strategy screening module is used to screen multiple exploitation strategies through a preset resource threshold and the multiple predicted resource production information corresponding to each exploitation strategy to determine multiple designated exploitation strategies that meet preset requirements, and to determine the exploitation cost information and the exploitation difficulty information of each designated exploitation strategy; a shale oil and gas reservoir description module is used 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 designated exploitation strategy 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, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment, and non-volatile computer storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0062] The above is a description of a specific embodiment of the specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0063] The devices and media provided in the embodiments of this specification correspond one-to-one to the methods. Therefore, the devices and media also have similar beneficial technical effects as the 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 repeated here.

[0064] Those skilled in the art will appreciate that the embodiments of this specification may be provided as methods, systems, or computer program products. Therefore, this specification may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this specification may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

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

[0066] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0067] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

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

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

[0070] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. 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 technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission 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 temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0071] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[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 may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of one or more embodiments of this specification shall be included in the scope of the claims of this specification.

Claims

1. A method for describing the exploitation of shale oil and gas reservoirs, characterized in that: The method comprises: 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; According to the shale oil and gas reservoir data set, multiple processes of the shale oil and gas reservoir are numerically simulated 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, wherein the resource information includes reserve information, distribution information and resource quality information of the shale oil and gas reservoir; Determine a plurality of pre-set mining strategies, and dynamically simulate the mining process of the shale oil and gas reservoir through the plurality of mining strategies and the resource information to determine a plurality of predicted resource production information corresponding to each mining strategy, wherein each mining strategy includes an engineering technology type and a mining plan corresponding to the engineering technology type; Screening multiple mining strategies through the preset resource threshold and the multiple predicted resource output information corresponding to each mining strategy to determine multiple designated mining strategies that meet the preset requirements, and determining the mining cost information and mining difficulty information of each designated mining strategy; The shale oil and gas reservoir is described according to the mining cost information, the mining difficulty information and the designated predicted resource output information of each designated mining strategy to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

2. The method for describing the exploitation of shale oil and gas reservoirs according to claim 1, characterized in that: According to the shale oil and gas reservoir data set, multiple processes of the shale oil and gas reservoir are numerically simulated to determine a comprehensive evaluation model for the shale oil and gas reservoir, specifically including: According to the shale oil and gas reservoir data set, numerical simulations are respectively performed on the shale gas generation process and the shale gas migration and accumulation process of the shale oil and gas reservoir 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; According to the shale gas generation simulation model and the shale gas migration and accumulation simulation model, a comprehensive evaluation model for shale oil and gas reservoirs is determined, 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 for shale oil and gas reservoirs.

3. A method for describing the exploitation of shale oil and gas reservoirs according to claim 2, characterized in that: According to the shale oil and gas reservoir data set, numerical simulations are respectively performed on the shale gas generation process and the shale gas migration and accumulation process of the shale oil and gas reservoir 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: Acquire geological exploration data in the 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, construct a three-dimensional geological model corresponding to the shale oil and gas reservoir, so as to obtain stratum distribution information and structural feature information through the three-dimensional geological model; Acquiring 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; The shale gas generation process is simulated by analyzing the core sample data to determine a shale gas generation simulation model corresponding to the shale gas generation process; Based on the formation distribution information, the structural characteristic 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.

4. The method for describing the exploitation of shale oil and gas reservoirs according to claim 1, characterized in that: By using the preset resource threshold and the plurality of predicted resource production information corresponding to each mining strategy, a plurality of mining strategies are screened to determine a plurality of designated mining strategies that meet the preset requirements, specifically including: Determining a preset resource threshold and a predicted resource yield in the predicted resource yield information, wherein the resource threshold includes a yield threshold corresponding to each engineering technology type; Based on the engineering technology type corresponding to each of the mining strategies, determining a corresponding type of production threshold; Through the multiple predicted resource production information, according to the corresponding type production threshold, among the multiple mining strategies, at least one mining strategy whose predicted resource production is lower than the production threshold is eliminated to determine multiple specified mining strategies that meet the preset requirements.

5. A method for describing the exploitation of shale oil and gas reservoirs according to claim 4, characterized in that: Determine the pre-set resource thresholds, including: Based on the resource information of the shale oil and gas reservoir, a historical production data set corresponding to the shale oil and gas reservoir is constructed by using big data technology, wherein the historical production data set includes historical engineering technology types corresponding to multiple historical shale oil and gas reservoirs and historical predicted reserves and historical actual production corresponding to each historical engineering technology type; Classifying the historical mining data set according to the historical engineering technology type to obtain a historical mining data subset corresponding to each historical engineering technology type; Determine the historical production rate of each of the historical shale oil and gas reservoirs corresponding to each of the historical engineering technology types based on the historical predicted reserves and the historical actual production volumes corresponding to the multiple historical shale oil and gas reservoirs in each of the historical production data subsets; Determine the historical average production rate and the historical minimum production rate corresponding to each of the historical engineering technology types according to the historical production rate of each of the historical shale oil and gas reservoirs corresponding to each of the historical engineering technology types; Determine a mining rate threshold corresponding to each of the historical engineering technology types by using the historical average mining rate and the historical minimum mining rate corresponding to each of the historical engineering technology types, wherein the mining rate threshold is the average of the historical average mining rate and the historical minimum mining rate; Based on the mining rate threshold corresponding to each of the historical engineering technology types and the corresponding historical engineering technology type, construct a mining rate threshold comparison table; The reserve information of the shale oil and gas reservoir is obtained from the resource information of the shale oil and gas reservoir, and the production threshold corresponding to each engineering technology type is determined through the mining 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 shale oil and gas reservoirs according to claim 1, characterized in that: Determining the mining cost information and mining difficulty information of each of the specified mining strategies, specifically including: Acquiring the reserve information, distribution information and resource quality information of the shale oil and gas reservoir from 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 based on the resource information; Determining an indicator weight set corresponding to each engineering technology type, wherein the indicator weight set includes a reserve complexity weight, a distribution complexity weight, and a quality complexity weight; Determine the technical complexity theoretical evaluation index corresponding to each of the specified mining strategies through the indicator weight set corresponding to each of the engineering technology types and the reserve complexity, distribution complexity and quality complexity of the shale oil and gas reservoir, so as to determine the mining difficulty information corresponding to each of the specified mining strategies; According to the mining plan corresponding to the engineering technology type in each of the specified mining strategies, the mining economic cost of each of the specified mining strategies is predicted to determine the mining cost information, wherein the mining plan includes multiple mining parameters corresponding to each of the engineering technology types.

7. The method for describing the exploitation of shale oil and gas reservoirs according to claim 1, characterized in that: The shale oil and gas reservoir is described according to the mining cost information of each of the specified mining strategies, the mining difficulty information and the specified predicted resource output information to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir, specifically including: Determine the mining evaluation index of each of the mining strategies according to the mining cost information of each of the mining strategies, the mining difficulty information and the corresponding designated predicted resource output information; Determining a first designated mining strategy that meets the requirements among the plurality of designated mining strategies by using the mining evaluation index; The reserves and mining plan of the shale oil and gas reservoir are described by using the first specified predicted production information corresponding to the first specified mining strategy, the engineering technology type corresponding to the first specified mining strategy, and the mining plan corresponding to the engineering technology type to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

8. A method for describing the exploitation of shale oil and gas reservoirs according to claim 7, characterized in that: According to the mining cost information, the mining difficulty information and the corresponding designated predicted resource output information of each of the designated mining strategies, the mining evaluation index of each of the mining strategies is determined, specifically including: Standardizing the mining cost information and the mining difficulty information to obtain the designated mining cost information and the designated mining difficulty information of each designated mining strategy; The mining evaluation index of each of the specified mining strategies is generated by the ratio of the specified predicted resource output information to the sum of the specified mining cost information and the specified mining difficulty information of each of the specified mining strategies.

9. A shale oil and gas reservoir mining description device, characterized in that: The device comprises: 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, the instructions being executed by the at least one processor to enable the at least one processor 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; According to the shale oil and gas reservoir data set, multiple processes of the shale oil and gas reservoir are numerically simulated 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, wherein the resource information includes reserve information, distribution information and resource quality information of the shale oil and gas reservoir; Determine a plurality of pre-set mining strategies, and dynamically simulate the mining process of the shale oil and gas reservoir through the plurality of mining strategies and the resource information to determine a plurality of predicted resource production information corresponding to each mining strategy, wherein each mining strategy includes an engineering technology type and a mining plan corresponding to the engineering technology type; Screening multiple mining strategies through the preset resource threshold and the multiple predicted resource output information corresponding to each mining strategy to determine multiple designated mining strategies that meet the preset requirements, and determining the mining cost information and mining difficulty information of each designated mining strategy; The shale oil and gas reservoir is described according to the mining cost information, the mining difficulty information and the designated predicted resource output information of each designated mining strategy to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

10. A shale oil and gas reservoir production description system, characterized in that: The system comprises: A data acquisition module, used 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, and determine 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 yield prediction module, used to determine a plurality of pre-set mining strategies, and dynamically simulate the mining process of the shale oil and gas reservoir through the plurality of mining strategies and the resource information, so as to determine a plurality of predicted resource yield information corresponding to each mining strategy, wherein each mining strategy includes an engineering technology type and a mining plan corresponding to the engineering technology type; A mining strategy screening module is used to screen multiple mining strategies through a preset resource threshold and the multiple predicted resource output information corresponding to each mining strategy to determine multiple designated mining strategies that meet preset requirements, and determine the mining cost information and mining difficulty information of each designated mining strategy; The shale oil and gas reservoir description module is used to describe the shale oil and gas reservoir according to the mining cost information of each specified mining strategy, the mining difficulty information and the specified predicted resource output information to determine the shale oil and gas reservoir mining description information of the shale oil and gas reservoir.

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