Method and equipment for increasing yield of marine reservoir based on neural network and medium

Abstract

The embodiment of the invention discloses an ocean oil reservoir yield increasing method and device based on a neural network and a medium. The method comprises the steps that current ocean oil reservoir parameters are obtained; if the oil production per unit time of the marine reservoir in the current marine reservoir parameters is lower than the preset oil production per unit; the production pressure difference, the water injection pressure difference and the oil reservoir exploitation proportion of the ocean oil reservoir in the current ocean oil reservoir parameters and the preset unit oil yield are input into a pre-trained yield adjustment model, a pressure difference adjustment scheme is obtained, the yield adjustment model is a multi-layer perceptron neural network model comprising a plurality of full-connection layers, and the multi-layer perceptron neural network model comprises a plurality of full-connection layers; the pressure difference adjustment scheme comprises adjustment of a production pressure difference and / or a water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value; and according to the pressure difference adjustment scheme, the production pressure difference and / or the water injection pressure difference of the marine reservoir in the current marine reservoir parameters are / is adjusted, so that the unit time oil production of the current marine reservoir is improved.

Description

Technical Field

[0001] The present specification relates to the field of computer technology, and in particular to a method, device and medium for increasing production of marine oil reservoirs based on neural networks. Background Art

[0002] Marine oil reservoirs refer to strata containing recoverable oil resources located at the bottom of the ocean or underground. Due to the particularity of the marine geological environment, the exploitation of marine oil reservoirs is more complicated and difficult than that of terrestrial oil fields.

[0003] In the process of offshore oil reservoir exploitation, the problem of controlling production differential pressure and water injection differential pressure is often encountered. Production differential pressure refers to the difference between the internal pressure of the reservoir and the wellhead pressure, and water injection differential pressure refers to the difference between the pressure of the injected water and the internal pressure of the reservoir. By adjusting the production differential pressure and water injection differential pressure, the oil production of the reservoir can be effectively controlled.

[0004] However, the current offshore oil reservoir exploitation technology is unable to effectively control the production pressure difference and water injection pressure difference, resulting in the oil production per unit time failing to meet expectations. Summary of the invention

[0005] One or more embodiments of the present specification provide a method, device and medium for increasing production of marine oil reservoirs based on neural networks, which are used to solve the technical problems raised by the background technology.

[0006] One or more embodiments of this specification adopt the following technical solutions:

[0007] One or more embodiments of this specification provide a method for increasing production of marine oil reservoirs based on a neural network, comprising:

[0008] When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir;

[0009] If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production;

[0010] Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value;

[0011] The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

[0012] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0013] Improve oil production: By analyzing and adjusting the current marine reservoir parameters, this method can effectively control and adjust the production pressure difference and water injection pressure difference. Through the pressure difference adjustment scheme obtained according to the pre-trained neural network model, the production pressure difference and water injection pressure difference of the marine reservoir can be accurately adjusted. By reasonably adjusting the production pressure difference and water injection pressure difference, the pressure distribution of the reservoir can be improved, the fluidity of the oil in the reservoir can be increased, and the oil production per unit time can be effectively increased.

[0014] Improved recovery: By effectively controlling and adjusting the production pressure difference and water injection pressure difference, the oil production capacity in the reservoir can be increased, the fluidity of the oil in the reservoir can be enhanced, and the oil in the reservoir can be moved to the wellhead. This will help to improve the recovery factor of the reservoir, that is, the ratio between the total amount of oil obtained from the reservoir and the total amount of oil that can be recovered.

[0015] Improve economic benefits: By increasing the oil production per unit time and the recovery rate, the output and production efficiency of the oil field can be significantly increased, thereby bringing more oil output. This will improve the economic benefits of the oil field and increase the income and profits of oil companies.

[0016] Fast response and precise adjustment: This method uses a pre-trained neural network model to calculate the pressure difference adjustment plan, which has the characteristics of fast response and precise adjustment. By inputting the current marine reservoir parameters, a pressure difference adjustment plan adapted to the actual conditions can be quickly obtained, and the production pressure difference and water injection pressure difference can be accurately adjusted. This will improve the flexibility and responsiveness of the reservoir production process.

[0017] Furthermore, the current marine reservoir parameters of the embodiments of this specification also include marine geological characteristics;

[0018] The production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production are input into the pre-trained production adjustment model to obtain the pressure difference adjustment plan, including:

[0019] The production pressure difference, water injection pressure difference, oil reservoir production ratio and marine geological characteristics of the current marine oil reservoir parameters, as well as the preset unit oil production, are input into the production adjustment model to obtain a pressure difference adjustment plan.

[0020] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0021] Optimize resource utilization: Considering the impact of marine geological characteristics on oil reservoir exploitation can make more rational use of oil reservoir resources and avoid waste of resources.

[0022] Furthermore, the marine geological characteristics of the embodiments of this specification include geological structures, lithological characteristics and sedimentary characteristics.

[0023] Furthermore, the current marine reservoir parameters of the embodiments of this specification also include marine reservoir characteristics;

[0024] Before adjusting the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme, the method further includes:

[0025] Inputting the production pressure difference, water injection pressure difference and marine reservoir characteristics of the marine reservoir in the current marine reservoir parameters into the pressure difference optimization model to obtain a pressure difference optimization scheme, wherein the pressure difference optimization model is an optimization model based on big data analysis, and the pressure difference optimization scheme includes optimizing the production pressure difference and / or water injection pressure difference, and an optimized value of the production pressure difference and / or the optimized value of the water injection pressure difference;

[0026] comparing the error between the pressure difference optimization scheme and the pressure difference adjustment scheme;

[0027] If the error is smaller than a preset threshold, the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters is adjusted according to the pressure difference adjustment scheme.

[0028] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0029] Reduce error: By comparing the error between the pressure difference optimization plan and the pressure difference adjustment plan, the accuracy and feasibility of the production adjustment model can be evaluated and verified. If the error is less than the preset threshold, it means that the result of the production adjustment model is relatively reliable and the adjustment plan can be implemented.

[0030] Furthermore, the marine oil reservoir characteristics of the embodiments of this specification include the permeability and porosity of the marine oil reservoir.

[0031] Further, in the embodiment of the present specification, before adjusting the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme, the method further includes:

[0032] Determine a final production pressure difference and / or a final water injection pressure difference according to the production pressure difference adjustment value and / or the water injection pressure difference adjustment value;

[0033] Determining whether the final production pressure difference and / or the final water injection pressure difference exceeds a preset maximum production pressure difference and / or a maximum water injection pressure difference;

[0034] If not, the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters is adjusted according to the pressure difference adjustment scheme.

[0035] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0036] Firstly, by determining the final production differential pressure and / or final water injection differential pressure according to the production differential pressure adjustment value and / or the water injection differential pressure adjustment value, it can be ensured that the adjusted differential pressure value is reasonable, thus avoiding the adverse effects of excessive or insufficient differential pressure on the reservoir.

[0037] Secondly, by determining whether the final production differential pressure and / or final water injection differential pressure exceeds the preset maximum production differential pressure and / or maximum water injection differential pressure, it can be ensured that the adjusted differential pressure value does not exceed the range that the reservoir can withstand, thereby protecting the reservoir from damage.

[0038] Finally, if the final production pressure difference and / or the final water injection pressure difference does not exceed the preset maximum pressure difference value, the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters can be adjusted according to the pressure difference adjustment plan. This can effectively improve the development efficiency of the oil reservoir, increase the output of the oil reservoir, and thus improve the economic benefits.

[0039] Further, in the embodiment of this specification, before determining whether the final production pressure difference and / or the final water injection pressure difference exceeds a preset maximum production pressure difference and / or maximum water injection pressure difference, the method further includes:

[0040] According to the permeability and porosity of the marine oil reservoir reservoir in the marine oil reservoir characteristics, and the geological structure, lithological characteristics and sedimentary characteristics in the marine geological characteristics, the maximum production pressure difference and the maximum water injection pressure difference that the marine oil reservoir can withstand are obtained.

[0041] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0042] Improved safety: By presetting the maximum production pressure difference and the maximum water injection pressure difference, reservoir damage or safety accidents caused by excessive pressure can be effectively prevented. Understanding and complying with the maximum pressure of the reservoir will help maintain reservoir stability and production safety.

[0043] Reservoir protection: Based on factors such as the permeability, porosity, geological structure, lithological characteristics and sedimentary characteristics of the reservoir, the carrying capacity of the reservoir can be judged more accurately, thereby avoiding reservoir rupture, pollution or other forms of damage caused by overpressure production.

[0044] Improved oil recovery: Reasonable production pressure difference and water injection pressure difference can help improve the oil recovery rate in the reservoir. By precisely controlling the pressure, the production strategy can be optimized so that more oil can be effectively extracted.

[0045] Extending reservoir life: By scientifically managing reservoir pressure, the decline of the reservoir can be slowed down, the production cycle of the reservoir can be extended, and the economic benefits can be maximized.

[0046] Further, in the embodiment of this specification, if the final production pressure difference and / or the final water injection pressure difference exceeds the preset maximum production pressure difference and / or the maximum water injection pressure difference, the method further includes:

[0047] Determining to adjust the production pressure difference and / or the water injection pressure difference according to the pressure difference adjustment plan;

[0048] The production pressure difference and / or the water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the maximum production pressure difference and / or the maximum water injection pressure difference.

[0049] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0050] Protecting reservoir stability: By determining the pressure difference adjustment value according to the pressure difference adjustment plan and adjusting the current reservoir pressure difference according to the maximum pressure difference limit, it is possible to avoid the adverse effects of excessive or insufficient pressure on reservoir stability, thereby protecting the reservoir's production capacity and long-term sustainable exploitation.

[0051] Reduce reservoir damage risk: Timely adjustment of production pressure difference and water injection pressure difference to keep them within the appropriate range can avoid the risk of reservoir damage caused by excessively high or low pressure difference, such as reservoir rupture, pore collapse, etc.

[0052] One or more embodiments of this specification provide a neural network-based offshore oil reservoir production enhancement device, including:

[0053] at least one processor; and,

[0054] a memory communicatively connected to the at least one processor; wherein,

[0055] 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:

[0056] When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir;

[0057] If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production;

[0058] Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value;

[0059] The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

[0060] One or more embodiments of this specification provide a non-volatile computer storage medium storing computer executable instructions, which can achieve the following when executed by a computer:

[0061] When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir;

[0062] If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production;

[0063] Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value;

[0064] The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

[0065] At least one of the above technical solutions adopted in the embodiments of this specification can achieve the following beneficial effects:

[0066] Improve oil production: By analyzing and adjusting the current marine reservoir parameters, this method can effectively control and adjust the production pressure difference and water injection pressure difference. Through the pressure difference adjustment scheme obtained according to the pre-trained neural network model, the production pressure difference and water injection pressure difference of the marine reservoir can be accurately adjusted. By reasonably adjusting the production pressure difference and water injection pressure difference, the pressure distribution of the reservoir can be improved, the fluidity of the oil in the reservoir can be increased, and the oil production per unit time can be effectively increased.

[0067] Improved recovery: By effectively controlling and adjusting the production pressure difference and water injection pressure difference, the oil production capacity in the reservoir can be increased, the fluidity of the oil in the reservoir can be enhanced, and the oil in the reservoir can be moved to the wellhead. This will help to improve the recovery factor of the reservoir, that is, the ratio between the total amount of oil obtained from the reservoir and the total amount of oil that can be recovered.

[0068] Improve economic benefits: By increasing the oil production per unit time and the recovery rate, the output and production efficiency of the oil field can be significantly increased, thereby bringing more oil output. This will improve the economic benefits of the oil field and increase the income and profits of oil companies.

[0069] Fast response and precise adjustment: This method uses a pre-trained neural network model to calculate the pressure difference adjustment plan, which has the characteristics of fast response and precise adjustment. By inputting the current marine reservoir parameters, a pressure difference adjustment plan adapted to the actual conditions can be quickly obtained, and the production pressure difference and water injection pressure difference can be accurately adjusted. This will improve the flexibility and responsiveness of the reservoir production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] 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:

[0071] Figure 1 A schematic flow chart of a method for increasing production of marine oil reservoirs based on a neural network provided for one or more embodiments of this specification;

[0072] Figure 2 A schematic diagram of the structure of a neural network-based marine oil reservoir production enhancement device provided in one or more embodiments of this specification. DETAILED DESCRIPTION

[0073] The embodiments of this specification provide a method, device and medium for increasing production of marine oil reservoirs based on neural networks.

[0074] 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.

[0075] Figure 1 A schematic flow chart of a method for increasing production of marine oil reservoirs based on a neural network provided in one or more embodiments of the specification, the process can be executed by an oil production increase system. Certain input parameters or intermediate results in the process allow manual intervention and adjustment to help improve accuracy.

[0076] The method steps of the embodiment of this specification are as follows:

[0077] S102, when the marine oil reservoir is being exploited, obtaining current marine oil reservoir parameters, wherein the current marine oil reservoir parameters include production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the marine oil reservoir.

[0078] In the examples of this specification, the above contents can be implemented by the following specific implementation schemes:

[0079] Data collection and monitoring: Establish a data acquisition module, which can include various sensors, monitoring equipment, etc., to obtain current marine reservoir parameters in real time, such as production pressure difference, water injection pressure difference, reservoir exploitation ratio and oil production per unit time.

[0080] Data analysis and processing: The collected data can be analyzed and processed using data processing tools and algorithms to extract useful information and features to form an accurate description of the current marine reservoir parameters.

[0081] Parameter monitoring and control: Based on the current marine reservoir parameters obtained, a monitoring module is established to monitor the production pressure difference, water injection pressure difference, reservoir production ratio and oil production per unit time in real time.

[0082] S104: If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than a preset unit oil production.

[0083] In the embodiments of this specification, the preset unit oil production can be adjusted according to actual conditions.

[0084] S106, inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value.

[0085] In the examples of this specification, the above contents can be implemented by the following specific implementation schemes:

[0086] Data preparation and preprocessing: Organize and prepare the required current marine reservoir parameter data, including production pressure difference, water injection pressure difference, reservoir production ratio and preset unit oil production. Preprocess the data, such as normalization, removal of outliers, etc.

[0087] Constructing a neural network model: constructing a neural network model for production adjustment. This may involve selecting a suitable neural network structure, determining input variables and output variables, setting a suitable loss function, etc. The input variables may be the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the marine oil reservoir parameters, and the preset unit oil production, the output variable may be the pressure difference adjustment scheme, and the loss function may be the mean absolute error.

[0088] Model training and validation: Use historical data to train and validate the constructed neural network model. This involves dividing the dataset into training and validation sets, iteratively training the model through the back-propagation algorithm, and optimizing the model’s weights and biases to minimize the loss function.

[0089] Model testing and evaluation: Use an independent test data set to test and evaluate the trained model. Calculate the model's accuracy, recall, root mean square error and other indicators to evaluate the model's performance and reliability.

[0090] Input parameters and generate differential pressure adjustment scheme: Input the current marine reservoir parameters, including production differential pressure, water injection differential pressure, reservoir production ratio and preset unit oil production, into the trained neural network model. The model can predict the required differential pressure adjustment scheme based on the input parameters, including adjusting the production differential pressure and / or water injection differential pressure value and the production differential pressure adjustment value and / or water injection differential pressure adjustment value.

[0091] It should be noted that the pressure difference adjustment scheme includes adjusting the production pressure difference, adjusting the water injection pressure difference, and adjusting the production pressure difference and water injection pressure difference.

[0092] Adjust production pressure difference:

[0093] 1. Analyze factors such as reservoir capacity, oil-water distribution, and utilization level to evaluate the rationality of the current production pressure difference.

[0094] 2. According to the production adjustment model, combined with actual operating conditions and production requirements, determine the adjustment direction and amplitude of the production pressure difference.

[0095] 3. Gradually increase or decrease the production pressure difference according to the adjustment direction, observe the response of the output, and make further adjustments based on the results.

[0096] 4. During the adjustment process, pay attention to balancing reservoir pressure and avoiding over-exploitation that may lead to reservoir damage or reserve loss.

[0097] Adjust the water injection pressure difference:

[0098] 1. Analyze the geographical location, injected water quality, seepage characteristics and other factors between the water injection well and the oil production well to evaluate the rationality of the current water injection pressure difference.

[0099] 2. According to the production adjustment model, combined with actual operating conditions and production increase needs, determine the adjustment direction and amplitude of the water injection pressure difference.

[0100] 3. Gradually increase or decrease the injection pressure difference according to the adjustment direction, observe the response of production, and make further adjustments based on the results.

[0101] 4. During the adjustment process, pay attention to controlling the water injection volume and adjusting the water injection pressure to avoid excessive water injection resulting in poor oil recovery or unsatisfactory water drive effects.

[0102] Adjust the production pressure difference adjustment value and the water injection pressure difference adjustment value:

[0103] 1. Combine the production adjustment model, production data and water injection data, and determine the optimal combination of production pressure difference adjustment value and water injection pressure difference adjustment value through sensitivity analysis and optimization algorithm.

[0104] 2. Taking into account production conditions, geological characteristics and engineering technology limitations, determine the appropriate pressure difference adjustment value to achieve the preset unit oil production.

[0105] 3. Gradually adjust the production pressure difference adjustment value and the water injection pressure difference adjustment value according to the adjustment plan, and evaluate and adjust according to the actual production changes.

[0106] It should be noted that the multilayer perceptron (MLP) neural network model is a common feedforward neural network, which consists of multiple neurons and forms a multi-layer structure by connecting these neurons. Each neuron receives input from the neurons in the previous layer, processes it through the activation function, and then passes the output to the neurons in the next layer. The production pressure difference, water injection pressure difference and reservoir production ratio can be used as inputs, and the pressure difference adjustment plan can be obtained through calculation of the hidden layer.

[0107] Furthermore, the current marine oil reservoir parameters of the embodiments of the present specification also include marine geological characteristics; the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, as well as the preset unit oil production, are input into a pre-trained production adjustment model to obtain a pressure difference adjustment plan, and the production pressure difference, water injection pressure difference, oil reservoir production ratio and marine geological characteristics of the marine oil reservoir in the current marine oil reservoir parameters, as well as the preset unit oil production, are input into the production adjustment model to obtain a pressure difference adjustment plan.

[0108] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0109] Optimize resource utilization: Considering the impact of marine geological characteristics on oil reservoir exploitation can make more rational use of oil reservoir resources and avoid waste of resources.

[0110] Furthermore, the marine geological characteristics of the embodiments of this specification include geological structures, lithological characteristics and sedimentary characteristics.

[0111] It should be noted that the data of marine geological structures, including faults, folds, tectonic blocks and other geological structural features, are collected and analyzed. Relevant data are obtained through seismic detection, geological exploration and other means. According to the type and distribution of geological structures, their impact on reservoir production is evaluated. The study of lithological characteristics can reveal the physical properties, porosity, permeability, etc. of rocks, which can provide a basis for reservoir production analysis. The analysis of sedimentary characteristics helps to reveal the nature, thickness, pore structure, etc. of sedimentary layers, which can provide a basis for reservoir production analysis.

[0112] Furthermore, the current marine reservoir parameters of the embodiments of this specification also include marine reservoir characteristics;

[0113] Before adjusting the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme, the production pressure difference, water injection pressure difference, and marine oil reservoir characteristics in the current marine oil reservoir parameters can be input into a pressure difference optimization model to obtain a pressure difference optimization scheme, wherein the pressure difference optimization model is an optimization model based on big data analysis, and the pressure difference optimization scheme includes optimizing the production pressure difference and / or water injection pressure difference, and the production pressure difference optimization value and / or water injection pressure difference optimization value; comparing the error between the pressure difference optimization scheme and the pressure difference adjustment scheme; if the error is less than a preset threshold, executing the adjustment of the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme; if the error is not less than the preset threshold, it means that the above-mentioned pressure difference adjustment scheme is not accurate and the pressure difference adjustment scheme needs to be re-determined.

[0114] It should be noted that the above content can be implemented through the following specific implementation plans:

[0115] Data collection and preprocessing: Collect the required marine reservoir parameter data, including production pressure difference, water injection pressure difference and marine reservoir characteristics. Preprocess the collected data, including cleaning, removing outliers and missing values, to ensure the accuracy and completeness of the data.

[0116] Establishment of pressure difference optimization model: Machine learning, data mining and other methods can be used to learn the relationship between pressure difference and output through training models, and obtain an optimization model.

[0117] Input parameters and calculate: Input the production pressure difference, water injection pressure difference and marine reservoir characteristics in the current marine reservoir parameters into the pressure difference optimization model for calculation and analysis. The optimization model will derive an optimal pressure difference optimization solution based on the combination of these parameters.

[0118] Obtaining a pressure difference optimization plan: According to the calculation results of the pressure difference optimization model, a pressure difference optimization plan is obtained. The plan includes the values ​​of the optimized production pressure difference and / or water injection pressure difference, and the corresponding optimized values.

[0119] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0120] Reduce error: By comparing the error between the pressure difference optimization plan and the pressure difference adjustment plan, the accuracy and feasibility of the production adjustment model can be evaluated and verified. If the error is less than the preset threshold, it means that the result of the production adjustment model is relatively reliable and the adjustment plan can be implemented.

[0121] Furthermore, the marine oil reservoir characteristics of the embodiments of this specification include the permeability and porosity of the marine oil reservoir.

[0122] Permeability is an indicator of the ability of rocks or sediments to pass water, which determines the ability of fluids to move in the reservoir. Higher permeability generally means better fluid mobility and higher production capacity. In the differential pressure optimization program, the production efficiency is improved by adjusting the production differential pressure and / or the water injection differential pressure. If the reservoir permeability is high and the fluid has a good ability to move in the reservoir, then during the differential pressure adjustment process, the production differential pressure and / or the water injection differential pressure can be moderately increased to increase production. For reservoirs with lower permeability, due to the slower movement of fluids in the reservoir, excessive differential pressure may cause greater energy loss and reservoir damage. Therefore, in the differential pressure optimization program, it is necessary to balance the adjustment range of the production differential pressure and / or the water injection differential pressure according to the specific reservoir characteristics and engineering constraints to avoid adverse effects on the reservoir.

[0123] Porosity is the ratio of the pore volume to the total volume in the reservoir rock, reflecting the reservoir's ability to store fluid. Higher porosity means higher fluid storage capacity. In the differential pressure optimization scheme, production is optimized by adjusting the production differential pressure and / or the water injection differential pressure. Reservoirs with higher porosity generally have larger fluid storage capacity, and the oil and water flow and production efficiency can be increased and production can be improved by reasonably adjusting the differential pressure. However, if the porosity is low, the fluid storage capacity of the reservoir is small, and it may be challenging to increase production by adjusting the differential pressure. In this case, it may be necessary to consider other production-increasing measures, such as artificially increasing permeability, increasing injection pressure, etc., to optimize the relationship between differential pressure and production.

[0124] S108, adjusting the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

[0125] Further, in an embodiment of the present specification, before adjusting the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme, the final production pressure difference and / or the final water injection pressure difference can be determined according to the production pressure difference adjustment value and / or the water injection pressure difference adjustment value; determine whether the final production pressure difference and / or the final water injection pressure difference exceeds the preset maximum production pressure difference and / or maximum water injection pressure difference; if not, adjust the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme; if so, there is no need to adjust the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme.

[0126] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0127] Firstly, by determining the final production differential pressure and / or final water injection differential pressure according to the production differential pressure adjustment value and / or the water injection differential pressure adjustment value, it can be ensured that the adjusted differential pressure value is reasonable, thus avoiding the adverse effects of excessive or insufficient differential pressure on the reservoir.

[0128] Secondly, by determining whether the final production differential pressure and / or final water injection differential pressure exceeds the preset maximum production differential pressure and / or maximum water injection differential pressure, it can be ensured that the adjusted differential pressure value does not exceed the range that the reservoir can withstand, thereby protecting the reservoir from damage.

[0129] Finally, if the final production pressure difference and / or the final water injection pressure difference does not exceed the preset maximum pressure difference value, the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters can be adjusted according to the pressure difference adjustment plan. This can effectively improve the development efficiency of the oil reservoir, increase the output of the oil reservoir, and thus improve the economic benefits.

[0130] Furthermore, in the embodiments of the present specification, before judging whether the final production pressure difference and / or the final water injection pressure difference exceeds the preset maximum production pressure difference and / or the maximum water injection pressure difference, the maximum production pressure difference and the maximum water injection pressure difference that the marine oil reservoir can withstand are obtained based on the permeability and porosity of the marine oil reservoir reservoir in the marine oil reservoir characteristics, and the geological structure, lithological characteristics and sedimentary characteristics in the marine geological characteristics.

[0131] It should be noted that the above content can be implemented through the following specific implementation plans:

[0132] Analysis of permeability and porosity of marine oil reservoirs: Collect and organize relevant data on permeability and porosity of marine oil reservoirs. Then, statistically analyze and evaluate the data to obtain the average permeability and porosity of marine oil reservoirs. Using these data, key parameters such as permeability and porosity of marine oil reservoirs can be calculated.

[0133] Marine geological characteristics analysis: By collecting and organizing relevant data on the geological structure, lithology and sedimentary characteristics of marine oil reservoirs, the geological characteristics of marine oil reservoirs are analyzed and evaluated. Based on the geological characteristics, the physical and chemical properties of rocks and the distribution and combination of rock layers can be understood.

[0134] Calculate the maximum production pressure difference and the maximum water injection pressure difference: Combine the permeability and porosity of the marine oil reservoir and the geological structure, lithology and sedimentary characteristics of the marine geological characteristics to calculate the maximum production pressure difference and the maximum water injection pressure difference that the marine oil reservoir can withstand.

[0135] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0136] Improved safety: By presetting the maximum production pressure difference and the maximum water injection pressure difference, reservoir damage or safety accidents caused by excessive pressure can be effectively prevented. Understanding and complying with the maximum pressure of the reservoir will help maintain reservoir stability and production safety.

[0137] Reservoir protection: Based on factors such as the permeability, porosity, geological structure, lithological characteristics and sedimentary characteristics of the reservoir, the carrying capacity of the reservoir can be judged more accurately, thereby avoiding reservoir rupture, pollution or other forms of damage caused by overpressure production.

[0138] Improved oil recovery: Reasonable production pressure difference and water injection pressure difference can help improve the oil recovery rate in the reservoir. By precisely controlling the pressure, the production strategy can be optimized so that more oil can be effectively extracted.

[0139] Extending reservoir life: By scientifically managing reservoir pressure, the decline of the reservoir can be slowed down, the production cycle of the reservoir can be extended, and the economic benefits can be maximized.

[0140] Furthermore, in an embodiment of the present specification, if the final production pressure difference and / or the final water injection pressure difference exceeds a preset maximum production pressure difference and / or maximum water injection pressure difference, the production pressure difference and / or water injection pressure difference can be adjusted according to the pressure difference adjustment scheme; and the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters can be adjusted according to the maximum production pressure difference and / or the maximum water injection pressure difference.

[0141] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0142] Protecting reservoir stability: By determining the pressure difference adjustment value according to the pressure difference adjustment plan and adjusting the current reservoir pressure difference according to the maximum pressure difference limit, it is possible to avoid the adverse effects of excessive or insufficient pressure on reservoir stability, thereby protecting the reservoir's production capacity and long-term sustainable exploitation.

[0143] Reduce reservoir damage risk: Timely adjustment of production pressure difference and water injection pressure difference to keep them within the appropriate range can avoid the risk of reservoir damage caused by excessively high or low pressure difference, such as reservoir rupture, pore collapse, etc.

[0144] It should be noted that the embodiments of this specification have the following beneficial effects through the above contents:

[0145] Improve oil production: By analyzing and adjusting the current marine reservoir parameters, this method can effectively control and adjust the production pressure difference and water injection pressure difference. Through the pressure difference adjustment scheme obtained according to the pre-trained neural network model, the production pressure difference and water injection pressure difference of the marine reservoir can be accurately adjusted. By reasonably adjusting the production pressure difference and water injection pressure difference, the pressure distribution of the reservoir can be improved, the fluidity of the oil in the reservoir can be increased, and the oil production per unit time can be effectively increased.

[0146] Improved recovery: By effectively controlling and adjusting the production pressure difference and water injection pressure difference, the oil production capacity in the reservoir can be increased, the fluidity of the oil in the reservoir can be enhanced, and the oil in the reservoir can be moved to the wellhead. This will help to improve the recovery factor of the reservoir, that is, the ratio between the total amount of oil obtained from the reservoir and the total amount of oil that can be recovered.

[0147] Improve economic benefits: By increasing the oil production per unit time and the recovery rate, the output and production efficiency of the oil field can be significantly increased, thereby bringing more oil output. This will improve the economic benefits of the oil field and increase the income and profits of oil companies.

[0148] Fast response and precise adjustment: This method uses a pre-trained neural network model to calculate the pressure difference adjustment plan, which has the characteristics of fast response and precise adjustment. By inputting the current marine reservoir parameters, a pressure difference adjustment plan adapted to the actual conditions can be quickly obtained, and the production pressure difference and water injection pressure difference can be accurately adjusted. This will improve the flexibility and responsiveness of the reservoir production process.

[0149] Figure 2 A schematic diagram of a structure of a marine oil reservoir production enhancement device based on a neural network provided for one or more embodiments of this specification includes:

[0150] at least one processor; and,

[0151] a memory communicatively connected to the at least one processor; wherein,

[0152] 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:

[0153] When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir;

[0154] If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production;

[0155] Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value;

[0156] The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

[0157] One or more embodiments of this specification provide a non-volatile computer storage medium storing computer executable instructions, which can achieve the following when executed by a computer:

[0158] When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir;

[0159] If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production;

[0160] Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value;

[0161] The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

[0162] 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 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 embodiments.

[0163] 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.

[0164] 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 increasing production of marine oil reservoirs based on neural networks, characterized in that: include: When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir; If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production; Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value; The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

2. The method according to claim 1, characterized in that: The current marine reservoir parameters also include marine geological characteristics; The production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production are input into the pre-trained production adjustment model to obtain the pressure difference adjustment plan, including: The production pressure difference, water injection pressure difference, oil reservoir production ratio and marine geological characteristics of the current marine oil reservoir parameters, as well as the preset unit oil production, are input into the production adjustment model to obtain a pressure difference adjustment plan.

3. The method according to claim 2, characterized in that The marine geological characteristics include geological structure, lithological characteristics and sedimentary characteristics.

4. The method according to claim 2, characterized in that: The current marine reservoir parameters also include marine reservoir characteristics; Before adjusting the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme, the method further includes: Inputting the production pressure difference, water injection pressure difference and marine reservoir characteristics of the marine reservoir in the current marine reservoir parameters into the pressure difference optimization model to obtain a pressure difference optimization scheme, wherein the pressure difference optimization model is an optimization model based on big data analysis, and the pressure difference optimization scheme includes optimizing the production pressure difference and / or water injection pressure difference, and an optimized value of the production pressure difference and / or the optimized value of the water injection pressure difference; comparing the error between the pressure difference optimization scheme and the pressure difference adjustment scheme; If the error is smaller than a preset threshold, the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters is adjusted according to the pressure difference adjustment scheme.

5. The method according to claim 4, characterized in that The marine oil reservoir characteristics include the permeability and porosity of the marine oil reservoir.

6. The method according to claim 5, characterized in that Before adjusting the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters according to the pressure difference adjustment scheme, the method further includes: Determine a final production pressure difference and / or a final water injection pressure difference according to the production pressure difference adjustment value and / or the water injection pressure difference adjustment value; Determining whether the final production pressure difference and / or the final water injection pressure difference exceeds a preset maximum production pressure difference and / or a maximum water injection pressure difference; If not, the production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters is adjusted according to the pressure difference adjustment scheme.

7. The method according to claim 6, characterized in that Before determining whether the final production pressure difference and / or the final water injection pressure difference exceeds a preset maximum production pressure difference and / or maximum water injection pressure difference, the method further comprises: According to the permeability and porosity of the marine oil reservoir reservoir in the marine oil reservoir characteristics, and the geological structure, lithological characteristics and sedimentary characteristics in the marine geological characteristics, the maximum production pressure difference and the maximum water injection pressure difference that the marine oil reservoir can withstand are obtained.

8. The method according to claim 6, characterized in that If the final production pressure difference and / or the final water injection pressure difference exceeds a preset maximum production pressure difference and / or a maximum water injection pressure difference, the method further comprises: Determining to adjust the production pressure difference and / or the water injection pressure difference according to the pressure difference adjustment plan; The production pressure difference and / or the water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the maximum production pressure difference and / or the maximum water injection pressure difference.

9. A production enhancement device for marine oil reservoirs based on neural networks, characterized in that: include: at least one processor; as well as, 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: When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir; If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production; Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value; The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

10. A non-volatile computer storage medium, characterized in that: Computer executable instructions are stored, and when the computer executable instructions are executed by a computer, the following can be achieved: When exploiting an offshore oil reservoir, obtaining current offshore oil reservoir parameters, including production pressure difference, water injection pressure difference, oil reservoir exploitation ratio and oil production per unit time of the offshore oil reservoir; If the oil production per unit time of the marine oil reservoir in the current marine oil reservoir parameters is lower than the preset unit oil production; Inputting the production pressure difference, water injection pressure difference and oil reservoir production ratio of the marine oil reservoir in the current marine oil reservoir parameters, and the preset unit oil production into a pre-trained production adjustment model to obtain a pressure difference adjustment scheme, wherein the production adjustment model is a multi-layer perceptron neural network model including a plurality of fully connected layers, and the pressure difference adjustment scheme includes adjusting the production pressure difference and / or the water injection pressure difference, and a production pressure difference adjustment value and / or a water injection pressure difference adjustment value; The production pressure difference and / or water injection pressure difference of the marine oil reservoir in the current marine oil reservoir parameters are adjusted according to the pressure difference adjustment scheme to increase the oil production per unit time of the current marine oil reservoir.

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