CN115977615A - Fracturing effect evaluation method, system, medium and electronic device - Google Patents

Abstract

The invention provides a fracturing effect evaluation method, system, medium and electronic equipment. The evaluation method includes: obtaining the fracturing image after the fracturing in the well and the relevant parameters of the fracturing fracture; analyzing the validity of the fracture image to obtain an effective fracture image; performing validity calculation on the effective fracture image to obtain each The effective parameters of effective fractures; the energy ratio parameters of effective fractures are determined according to the energy intensity difference before and after fracturing of effective fractures; the effective productivity ratio parameters of each effective fracture are determined according to the relevant parameters of fracturing fractures; The ratio parameter and the effective productivity ratio parameter calculate the evaluation parameters of each effective fracture, and sort each effective fracture according to the evaluation parameters, so as to obtain the effective fracture with the best fracturing effect. The invention further evaluates and sorts the fracturing fractures that meet the requirements, and improves the accuracy of fracturing effect evaluation.

Description

Fracturing effect evaluation method, system, medium and electronic equipment

technical field

The invention belongs to the technical field of drilling and exploration, and in particular relates to a fracturing effect evaluation method, system, medium and electronic equipment.

Background technique

With the deepening of oil field development, the development of oil and gas reservoirs is gradually becoming more difficult. In order to fully exploit oil and gas wells, the reservoir (usually refers to an oil layer or a gas layer) will be subjected to fracturing treatment. At present, fracturing has become a key technology for the effective development of unconventional resources such as tight sandstone oil and gas and shale oil and gas. With the development of understanding of formation exploration and development, more and more oil and gas reservoirs need fracturing development.

In the field of petroleum, fracturing refers to a method that uses hydraulic action to form cracks in oil and gas layers during the process of oil or gas recovery, also known as hydraulic fracturing. Fracturing is to artificially create fractures in the formation, improve the flow environment of oil underground, increase the production of oil wells, and play an important role in improving the flow conditions at the bottom of oil wells, slowing down interlayers and improving the production status of oil layers. Therefore, evaluating the fracturing effect of the reservoir plays a very important role in determining the productivity of the reservoir.

However, at present, when evaluating the fracturing effect, it is often only an overall evaluation, and the different information of the fracturing fractures is not integrated, resulting in a lack of accuracy in the final evaluation results.

Contents of the invention

In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a fracturing effect evaluation method, system, medium and electronic equipment for solving the problem of inaccurate fracturing effect evaluation of fracturing fractures in the prior art .

In order to achieve the above purpose and other related purposes, the present invention provides a fracturing effect evaluation method, including:

Obtain the fracturing image after the fracturing in the well and the relevant parameters of the fracturing fracture;

Performing image recognition on the fracturing images to obtain a plurality of fracture images, performing validity analysis on the fracture images to obtain effective fracture images, each of the effective fracture images corresponds to one effective fracture;

performing validity calculation on the effective fracture image to obtain the validity parameters of each effective fracture;

Obtaining the energy intensity of the effective fracture before and after fracturing, and determining the energy ratio parameter of the effective fracture according to the energy intensity difference before and after the effective fracture fracturing;

determining the effective productivity ratio parameter of each of the effective fractures according to the relevant parameters of the fracturing fractures;

Calculate the evaluation parameters of each of the effective fractures according to the effectiveness parameters, the energy ratio parameters and the effective productivity ratio parameters, and sort each of the effective fractures according to the evaluation parameters, so as to obtain fracturing The effective crack that works best.

Optionally, the effective analysis of the crack image to obtain an effective crack image includes:

acquiring a normal image of the fracture image before fracturing, and extracting an edge image of the fracture image according to the difference between the normal image and the fracture image;

Obtaining the edge pressure information and fracture pressure information of the edge image and the fracture image at the corresponding positions in the well through rock formation fracturing simulation;

calculating a pressure difference between the fracture pressure information and the edge pressure information;

The fracture image corresponding to when the pressure difference is greater than the first pressure threshold is used as the effective fracture image.

Optionally, the acquisition of edge pressure information and fracture pressure information of the edge image and the fracture image corresponding to the position in the well through rock formation fracturing simulation includes:

determining a first region within the wellbore based on the fracture image, and dividing the first region into a plurality of first partitions;

performing a stimulation simulation on the first region to obtain the instantaneous pressure value of each of the first subregions, and using the maximum instantaneous pressure value as the fracture pressure information of the fracture image;

determining a second region within the wellbore based on the edge image, dividing the second region into a plurality of second partitions;

Performing a fracturing simulation on the second zone to obtain a pressure critical value for each of the second subregions to be fractured;

taking the minimum pressure critical value as the edge pressure information of the edge image;

Wherein, after the first region and the second region are divided, each of the first partitions is in critical contact with at least one of the second partitions.

Optionally, the validity calculation is performed on the effective fracture images to obtain the validity parameters of each effective fracture respectively, including:

Vibration simulation is used to determine whether each of the first partitions is valid, and the effective first partition is used as the effective area of the effective crack;

determining the effective area ratio of the effective fracture according to the area ratio between the effective area and the effective fracture;

Obtain associated fractures around the effective fracture image, and calculate the contribution rate of the associated fractures to the stimulation rate of the fracturing fractures;

The effectiveness parameter of the effective fracture is calculated according to the effective area ratio and the contribution rate.

Optionally, the acquiring the energy intensity of the effective fracture before and after fracturing, and determining the energy ratio parameter of the effective fracture according to the energy intensity difference before and after the effective fracture fracturing include:

Obtaining the first average energy value that each area of the effective fracture bears before fracturing, and the second energy average value when each area of the effective fracture is fractured;

calculating said energy difference based on said first energy mean and said second energy mean;

calculating the energy ratio parameter of the effective fracture according to the area of the effective region and the energy difference.

Optionally, the determining the effective productivity ratio parameter of each effective fracture according to the relevant parameters of the fracturing fracture includes:

Obtain the validity period and daily average increment of the fracturing fracture;

calculating the productivity ratio of the fracturing fractures according to the valid period and the daily average incremental production;

An effective productivity ratio parameter of the effective fracture is determined according to a proportional relationship between the effective fracture and the fracturing fracture.

Optionally, calculating the evaluation parameters of each of the effective fractures according to the effectiveness parameters, the energy ratio parameters and the effective productivity ratio parameters, and performing an evaluation on each of the effective fractures according to the evaluation parameters Sorting to obtain the effective fractures with the best fracturing effect, including:

assigning a first weight, a second weight, and a third weight to the effectiveness parameter, the energy ratio parameter, and the effective capacity ratio parameter according to the neural network model;

calculating an evaluation parameter of the effective fracture according to the first weight, the second weight, and the third weight, and the effectiveness parameter, the energy ratio parameter, and the effective productivity ratio parameter;

sorting the evaluation parameters of each of the effective fractures;

The effective fracture with the largest evaluation parameter is selected as the optimal fracturing fracture.

The present invention also provides a fracturing effect evaluation system, comprising:

A parameter acquisition module, configured to acquire the fracturing image after the internal fracturing of the well and the relevant parameters of the fracturing fractures;

An analysis module, configured to perform image recognition on the fracturing images to obtain a plurality of fracture images, and perform validity analysis on the fracture images to obtain effective fracture images, each of the effective fracture images corresponds to one effective fracture;

a validity calculation module, configured to perform validity calculations on the effective fracture images, so as to obtain the validity parameters of each of the effective fractures;

The energy calculation module is used to obtain the energy intensity before and after fracturing of the effective fracture, and determine the energy ratio parameter of the effective fracture according to the energy intensity difference before and after fracturing of the effective fracture;

A productivity calculation module, configured to determine the effective productivity ratio parameter of each effective fracture according to the relevant parameters of the fracturing fractures;

a comprehensive evaluation module, configured to calculate the evaluation parameters of each of the effective fractures according to the effectiveness parameters, the energy ratio parameters and the effective productivity ratio parameters, and perform an evaluation on each of the effective fractures according to the evaluation parameters Sort to obtain the effective fractures with the best fracturing effect.

The present invention provides a storage medium on which a computer program is stored, and when the program is executed by a processor, the above-mentioned fracturing effect evaluation method is realized.

The present invention provides a terminal, including: a processor and a memory; the memory is used to store computer programs; the processor is used to execute the computer programs stored in the memory, so that the terminal executes the above-mentioned fracturing effect evaluation method .

As mentioned above, the fracturing effect evaluation method, system, medium and electronic equipment of the present invention have the following beneficial effects:

In the process of evaluating fracturing fractures, the effectiveness parameters, energy ratio parameters and effective productivity parameters of effective fractures in fracturing fractures are obtained respectively, so as to comprehensively evaluate fracturing fractures in terms of effectiveness, energy and productivity. It makes the fracturing effect evaluation results more accurate, comprehensively considers various factors, avoids the problem of single-sided evaluation, and can provide a reference for the fracturing situation in the same type of drilling. The evaluation process of fracturing effect is further refined to provide a basis for subsequent evaluation of fracturing effect.

Description of drawings

Fig. 1 shows a flowchart of the fracturing effect evaluation method of the present invention.

Fig. 2 is a flow chart of step S102 in the fracturing effect evaluation method of the present invention.

Fig. 3 is a flow chart of step S103 in the fracturing effect evaluation method of the present invention.

Fig. 4 is a flow chart of step S106 of the fracturing effect evaluation method of the present invention.

Fig. 5 is a structural block diagram of the fracturing effect evaluation system of the present invention.

Detailed ways

Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual implementation, and the component layout type may also be more complicated.

As shown in Figure 1, in one embodiment, a kind of fracturing effect evaluation method of the present invention comprises the following steps:

S101. Obtain a fracturing image after fracturing in the well and related parameters of the fracturing fractures.

In this embodiment, after the fracturing fractures are obtained through fracturing in the well, the fracturing images of the fracturing fractures and related parameters of the fracturing fractures are acquired to facilitate subsequent evaluation of the fracturing effect. Among them, the relevant parameters of fracturing fractures include valid period and average daily increment.

S102. Perform image recognition on the fracturing image to obtain a plurality of fracture images, perform validity analysis on the fracture images to obtain effective fracture images, and each effective fracture image corresponds to one effective fracture.

In some embodiments, the effective analysis of the fracture image to obtain an effective fracture image, referring to FIG. 2 , includes:

S201. Acquire a normal image of the fracture image before fracturing, and extract an edge image of the fracture image according to the difference between the normal image and the fracture image;

S202. Obtain edge pressure information and fracture pressure information of the edge image and the fracture image at corresponding positions in the well through rock formation fracturing simulation;

S203. Calculate the pressure difference between the fracture pressure information and the edge pressure information;

S204. Use the fracture image corresponding to when the pressure difference is greater than a first pressure threshold as the effective fracture image.

In this embodiment, after the fracturing is completed inside the well, after the fracturing images are captured by the camera in the drill bit, and multiple fracture images are obtained through image recognition, in order to divide the fracture images, the Comparing the fracture image with the normal image before fracturing, the unfractured edge image in the normal image can be obtained, and then the rock formation fracturing simulation is performed on the location of the fracture image and the edge image to determine the edge pressure information of the edge image and The fracture pressure information of the fracture image, and then calculate the pressure difference between the edge pressure information and the fracture pressure information, and select the corresponding fracture image when the pressure difference is greater than the first pressure threshold as the effective fracture image, so as to quickly screen out the pressure-bearing capacity. Strong effective and effective crack images, that is, effective cracks are screened out.

In some embodiments, the acquisition of edge pressure information and fracture pressure information of the edge image and the fracture image at corresponding positions in the well through rock formation fracturing simulation includes:

determining a first region within the wellbore based on the fracture image, and dividing the first region into a plurality of first partitions;

performing a stimulation simulation on the first region to obtain the instantaneous pressure value of each of the first subregions, and using the maximum instantaneous pressure value as the fracture pressure information of the fracture image;

determining a second region within the wellbore based on the edge image, dividing the second region into a plurality of second partitions;

Performing a fracturing simulation on the second zone to obtain a pressure critical value for each of the second subregions to be fractured;

taking the minimum pressure critical value as the edge pressure information of the edge image;

Wherein, after the first region and the second region are divided, each of the first partitions is in critical contact with at least one of the second partitions.

In this embodiment, after obtaining the fracture image and the edge image around the fracture image respectively, in order to obtain the edge pressure information and fracture pressure information, firstly determine its first area inside the drilling according to the fracture image, and according to the first area The distribution characteristics divide the first area into multiple first partitions. For example, if the first area is distributed in a bar shape, it is divided into equal intervals according to the length, and then the first area is simulated to increase production to obtain the instantaneous pressure curve of the first area when it is produced. , also obtain the instantaneous pressure value of each first partition, and use the maximum instantaneous pressure value as the fracture pressure information of the fracture image. For the second area corresponding to the edge image, it is divided into multiple second partitions in the same way, and the fracturing simulation is performed on the location of the second area, so as to obtain the critical pressure that the second area can withstand during fracturing. value, and take the minimum pressure critical value as the edge pressure information of the position of the edge image, so as to facilitate the subsequent pressure comparison.

It should be noted that, when dividing the first area and the second area, each of the first areas is in critical contact with at least one of the second areas, so that the first area and the second area are mutually Correlation makes the edge pressure information and fracture pressure information obtained after simulation more accurate, and avoids the isolated simulation process without considering the interaction between the area corresponding to the edge image and the area corresponding to the fracture image.

S103. Perform validity calculation on the effective fracture image to obtain validity parameters of each effective fracture.

In some embodiments, referring to FIG. 3 , the validity calculation is performed on the effective fracture image to obtain the validity parameters of each effective fracture respectively, including:

S301. Vibration simulation is used to determine whether each of the first partitions is valid, and the effective first partition is used as an effective area of the effective crack;

S302. Determine the effective area ratio of the effective fracture according to the area ratio between the effective area and the effective fracture;

S303. Obtain associated fractures around the effective fracture image, and calculate the contribution rate of the associated fractures to the stimulation rate of the fracturing fractures;

S304. Calculate the effectiveness parameter of the effective fracture according to the effective area ratio and the contribution rate.

In this embodiment, in order to calculate the validity of the obtained effective crack image, each first partition is tested by means of vibration simulation to determine whether the first partition is valid, so as to obtain an effective area in the effective crack. Specifically, the vibration signal is diffused to each first partition by simulating vibration, so as to determine the change of the quality factor of each first partition, and judge the first partition when the speed of quality factor change is lower than the threshold Effective, so that the effective first partition can be used as the effective area of the effective fracture, and then the area of the effective area and the effective fracture is calculated by scanning and the area ratio of the two is obtained, and the effective area ratio of the effective fracture can be obtained; Yes, when effective fractures are obtained during the fracturing process, some associated fractures will be generated, and the associated fractures will be obtained through the effective fracture image, and then the correlation can be obtained according to the ratio of the stimulation output flowing out of the associated fractures to the entire stimulation output during the stimulation process The contribution rate of fractures to the entire production increase can then be calculated by normalization to obtain the value of the effectiveness parameter of each effective fracture, which is convenient for subsequent calculations.

S104. Obtain the energy intensity of the effective fracture before and after fracturing, and determine the energy ratio parameter of the effective fracture according to the energy intensity difference before and after the effective fracture.

In some embodiments, the acquiring the energy intensity of the effective fracture before and after fracturing, and determining the energy ratio parameter of the effective fracture according to the energy intensity difference before and after the effective fracture fracturing include:

Obtaining the first average energy value that each area of the effective fracture bears before fracturing, and the second energy average value when each area of the effective fracture is fractured;

calculating said energy difference based on said first energy mean and said second energy mean;

calculating the energy ratio parameter of the effective fracture according to the area of the effective region and the energy difference.

In this embodiment, by calculating the first average energy value of each area in the effective fracture before fracturing, and the second energy average value when each area of the effective fracture is fractured, wherein the first energy average value and the second energy average value Both are energy values per unit area. By calculating the energy difference between the first energy mean and the second energy mean, the energy needed to increase the effective fracture is obtained. Then, according to the area of the effective area and the energy difference The product can calculate the total energy value of the entire effective fracture, so as to determine the additional energy required to form an effective fracture, and then calculate the energy ratio parameter of each effective fracture through normalization.

S105. Determine an effective productivity ratio parameter of each effective fracture according to relevant parameters of the fractured fracture.

In some embodiments, the determining the effective productivity ratio parameter of each effective fracture according to the relevant parameters of the fracturing fracture includes:

Obtain the validity period and daily average increment of the fracturing fracture;

calculating the productivity ratio of the fracturing fractures according to the valid period and the daily average incremental production;

An effective productivity ratio parameter of the effective fracture is determined according to a proportional relationship between the effective fracture and the fracturing fracture.

Specifically, after determining the productivity ratio A of the fracturing fracture according to the product of the effective period and the daily average incremental production, the effective productivity A*B of the effective fracture can be obtained according to the area ratio B between the effective fracture and the fracturing fracture, In order to combine and compare each effective fracture, the ratio of the effective productivity of each effective fracture to the total effective productivity is counted separately in a normalized manner, and the effective productivity ratio parameter of each effective fracture can be obtained.

S106. Calculate the evaluation parameters of each of the effective fractures according to the effectiveness parameters, the energy ratio parameters and the effective productivity ratio parameters, and sort each of the effective fractures according to the evaluation parameters, so as to obtain The effective fractures with the best fracturing effect.

In some embodiments, referring to Fig. 4, the evaluation parameter of each effective fracture is calculated according to the effectiveness parameter, the energy ratio parameter and the effective productivity ratio parameter, and each of the effective fractures is calculated according to the evaluation parameter One of the effective fractures is sorted to obtain the effective fractures with the best fracturing effect, including:

S401. Assigning a first weight, a second weight, and a third weight to the effectiveness parameter, the energy ratio parameter, and the effective capacity ratio parameter respectively according to the neural network model;

S402. Calculate the evaluation parameters of the effective fractures according to the first weight, the second weight, and the third weight, and the effectiveness parameter, the energy ratio parameter, and the effective productivity ratio parameter;

S403. Sorting the evaluation parameters of each effective fracture;

S404. Select the effective fracture with the largest evaluation parameter as an optimal fracturing fracture.

In this embodiment, in order to compare the fracturing effects of different effective fractures, the effectiveness parameter, the energy ratio parameter and the effective productivity ratio parameter of the effective fractures are given by training the neural network model Different weights are used to calculate the evaluation parameters of each effective fracture according to the assigned weights, and finally evaluate and analyze each effective fracture according to the evaluation parameters.

Wherein, the neural network model is obtained by training the simulation data of previous fracturing fractures, so as to obtain the influence ratio of the effectiveness parameter, the energy ratio parameter and the effective productivity ratio parameter on the entire fracturing effect. Wherein, the first weight, the second weight, and the third weight corresponding to the effectiveness parameter, the energy ratio parameter, and the effective capacity ratio parameter may also be manually configured according to experience, which is not particularly limited in this solution.

After the evaluation parameters of each effective fracture are respectively obtained according to the effectiveness parameter, the energy ratio parameter, the effective productivity ratio parameter and the first weight, the second weight and the third weight, compare and sort the evaluation parameters , the optimal fracturing fracture can be selected from a group of fracturing fractures that meet the requirements, instead of simply judging whether the fracturing fractures meet the requirements, and provide a reference for the subsequent fracturing process.

The present invention also provides a fracturing effect evaluation system, referring to Fig. 5, comprising:

A parameter acquisition module 501, configured to acquire the fracturing image after the fracturing inside the well and the relevant parameters of the fracturing fractures;

An analysis module 502, configured to perform image recognition on the fracturing image to obtain a plurality of fracture images, and perform validity analysis on the fracture image to obtain effective fracture images, each of the effective fracture images corresponds to one effective fracture;

A validity calculation module 503, configured to perform validity calculation on the effective fracture image, so as to obtain the validity parameters of each effective fracture;

The energy calculation module 504 is configured to obtain the energy intensity before and after fracturing of the effective fracture, and determine the energy ratio parameter of the effective fracture according to the energy intensity difference before and after fracturing of the effective fracture;

A productivity calculation module 505, configured to determine the effective productivity ratio parameter of each effective fracture according to the relevant parameters of the fracturing fractures;

A comprehensive evaluation module 506, configured to calculate the evaluation parameters of each effective fracture according to the effectiveness parameter, the energy ratio parameter and the effective productivity ratio parameter, and evaluate each effective fracture according to the evaluation parameter Sorting is performed to obtain the effective fractures with the best fracturing effect.

Since the principle of each module of the above-mentioned fracturing effect evaluation system corresponds to the steps of the above-mentioned fracturing effect evaluation method one by one, it will not be repeated here.

It should be noted that the scope of protection of the fracturing effect evaluation method described in the present invention is not limited to the execution order of the steps listed in this embodiment, and any step increase or decrease or step replacement in the prior art based on the principle of the present invention is realized All schemes are included in the protection scope of the present invention.

It should be noted that it should be understood that the division of each module of the above device is only a division of logical functions, and may be fully or partially integrated into one physical entity or physically separated during actual implementation. And these modules can all be implemented in the form of calling software through processing elements; they can also be implemented in the form of hardware; some modules can also be implemented in the form of calling software through processing elements, and some modules can be implemented in the form of hardware. For example, the x module can be a separate processing element, and can also be integrated in a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code. Call and execute the function of the above x module. The implementation of other modules is similar. In addition, all or part of these modules can be integrated together, and can also be implemented independently. The processing element mentioned here may be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above method, for example: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or, one or more digital signal processors ( Digital Singnal Processor, DSP), or, one or more Field Programmable Gate Arrays (Field Programmable Gate Array, FPGA), etc. For another example, when one of the above modules is implemented in the form of a processing element scheduling program code, the processing element may be a general-purpose processor, such as a central processing unit (Central Processing Unit, CPU) or other processors that can call program codes. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

The computer program is stored on the storage medium of the present invention, and when the program is executed by the processor, the above-mentioned fracturing effect evaluation method is realized. The storage medium includes: various media capable of storing program codes such as ROM, RAM, magnetic disk, U disk, memory card or optical disk.

The electronic equipment of the present invention includes a processor and a memory.

The memory is used to store computer programs. Preferably, the memory includes: various media capable of storing program codes such as ROM, RAM, magnetic disk, U disk, memory card or optical disk.

The processor is connected to the memory, and is used to execute the computer program stored in the memory, so that the terminal executes the above-mentioned fracturing effect evaluation method.

Preferably, the processor can be a general-purpose processor, including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), etc.; it can also be a digital signal processor (Digital Signal Processor, DSP), a dedicated Integrated Circuit (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

It should be noted that the fracturing effect evaluation system of the present invention can realize the fracturing effect evaluation method of the present invention, but the realization device of the fracturing effect evaluation method of the present invention includes but is not limited to the fracturing effect evaluation system listed in this embodiment All structural deformations and replacements in the prior art made according to the principle of the present invention are included in the scope of protection of the present invention.

In summary, the fracturing effect evaluation method, system, medium and electronic equipment of the present invention respectively obtain the effective parameters, energy ratio parameters and effective production capacity of effective fractures in the fracturing fractures during the evaluation process Parameters, so as to comprehensively evaluate the fracturing fractures from the three aspects of effectiveness, energy and production capacity, making the fracturing effect evaluation results more accurate, comprehensively considering various factors, avoiding the problem of single-sided evaluation, and can be used for the same type of drilling The fracturing situation provides a reference, and at the same time, the fracturing fractures that meet the requirements are further evaluated and sorted to further refine the evaluation process of the fracturing effect and provide a basis for the subsequent evaluation of the fracturing effect. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial application value.

The above-mentioned embodiments only illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention should still be covered by the claims of the present invention.

Claims (10)

1. A fracturing effect evaluation method, characterized in that, comprising: Obtain the fracturing image after the fracturing in the well and the relevant parameters of the fracturing fracture; Performing image recognition on the fracturing images to obtain a plurality of fracture images, performing validity analysis on the fracture images to obtain effective fracture images, each of the effective fracture images corresponds to one effective fracture; performing validity calculation on the effective fracture image to obtain the validity parameters of each effective fracture; Obtaining the energy intensity of the effective fracture before and after fracturing, and determining the energy ratio parameter of the effective fracture according to the energy intensity difference before and after the effective fracture fracturing; determining the effective productivity ratio parameter of each of the effective fractures according to the relevant parameters of the fracturing fractures; Calculate the evaluation parameters of each of the effective fractures according to the effectiveness parameters, the energy ratio parameters and the effective productivity ratio parameters, and sort each of the effective fractures according to the evaluation parameters, so as to obtain fracturing The effective crack that works best. 2. The fracturing effect evaluation method according to claim 1, wherein the effective analysis of the fracture image to obtain an effective fracture image comprises: acquiring a normal image of the fracture image before fracturing, and extracting an edge image of the fracture image according to the difference between the normal image and the fracture image; Obtaining the edge pressure information and fracture pressure information of the edge image and the fracture image at the corresponding positions in the well through rock formation fracturing simulation; calculating a pressure difference between the fracture pressure information and the edge pressure information; The fracture image corresponding to when the pressure difference is greater than the first pressure threshold is used as the effective fracture image. 3. The fracturing effect evaluation method according to claim 2, characterized in that, the edge pressure information and fracture pressure of the edge image and the fracture image in the corresponding position in the drilling are obtained by means of rock formation fracturing simulation information, including: determining a first region within the wellbore based on the fracture image, and dividing the first region into a plurality of first partitions; performing a stimulation simulation on the first region to obtain the instantaneous pressure value of each of the first subregions, and using the maximum instantaneous pressure value as the fracture pressure information of the fracture image; determining a second region within the wellbore based on the edge image, dividing the second region into a plurality of second partitions; Performing a fracturing simulation on the second zone to obtain a pressure critical value for each of the second subregions to be fractured; taking the minimum pressure critical value as the edge pressure information of the edge image; Wherein, after the first region and the second region are divided, each of the first partitions is in critical contact with at least one of the second partitions. 4. The fracturing effect evaluation method according to claim 3, wherein the effective calculation of the effective fracture images is performed to obtain the effectiveness parameters of each effective fracture respectively, including: Vibration simulation is used to determine whether each of the first partitions is valid, and the effective first partition is used as the effective area of the effective crack; determining the effective area ratio of the effective fracture according to the area ratio between the effective area and the effective fracture; Obtain associated fractures around the effective fracture image, and calculate the contribution rate of the associated fractures to the stimulation rate of the fracturing fractures; The effectiveness parameter of the effective fracture is calculated according to the effective area ratio and the contribution rate. 5. The fracturing effect evaluation method according to claim 4, characterized in that the energy intensity before and after the effective fracture fracturing is obtained, and the effective fracture is determined according to the energy intensity difference before and after the effective fracture fracturing. Energy ratio parameters for fractures, including: Obtaining the first average energy value that each area of the effective fracture bears before fracturing, and the second energy average value when each area of the effective fracture is fractured; calculating said energy difference based on said first energy mean and said second energy mean; calculating the energy ratio parameter of the effective fracture according to the area of the effective region and the energy difference. 6. The fracturing effect evaluation method according to claim 4, wherein said determining the effective productivity ratio parameter of each effective fracture according to the relevant parameters of said fracturing fractures comprises: Obtain the validity period and daily average increment of the fracturing fracture; calculating the productivity ratio of the fracturing fractures according to the valid period and the daily average incremental production; An effective productivity ratio parameter of the effective fracture is determined according to a proportional relationship between the effective fracture and the fracturing fracture. 7. The fracturing effect evaluation method according to claim 1, characterized in that the evaluation parameters of each effective fracture are calculated according to the effectiveness parameter, the energy ratio parameter and the effective productivity ratio parameter , and sort each of the effective fractures according to the evaluation parameters, so as to obtain the effective fractures with the best fracturing effect, including: assigning a first weight, a second weight, and a third weight to the effectiveness parameter, the energy ratio parameter, and the effective capacity ratio parameter according to the neural network model; calculating an evaluation parameter of the effective fracture according to the first weight, the second weight, and the third weight, and the effectiveness parameter, the energy ratio parameter, and the effective productivity ratio parameter; sorting the evaluation parameters of each of the effective fractures; The effective fracture with the largest evaluation parameter is selected as the optimal fracturing fracture. 8. A fracturing effect evaluation system, characterized in that it comprises: A parameter acquisition module, configured to acquire the fracturing image after the internal fracturing of the well and the relevant parameters of the fracturing fractures; An analysis module, configured to perform image recognition on the fracturing images to obtain a plurality of fracture images, and perform validity analysis on the fracture images to obtain effective fracture images, each of the effective fracture images corresponds to one effective fracture; a validity calculation module, configured to perform validity calculations on the effective fracture images, so as to obtain the validity parameters of each of the effective fractures; The energy calculation module is used to obtain the energy intensity before and after fracturing of the effective fracture, and determine the energy ratio parameter of the effective fracture according to the energy intensity difference before and after fracturing of the effective fracture; A productivity calculation module, configured to determine the effective productivity ratio parameter of each effective fracture according to the relevant parameters of the fracturing fractures; a comprehensive evaluation module, configured to calculate the evaluation parameters of each of the effective fractures according to the effectiveness parameters, the energy ratio parameters and the effective productivity ratio parameters, and perform an evaluation on each of the effective fractures according to the evaluation parameters Sort to obtain the effective fractures with the best fracturing effect. 9. A storage medium, on which a computer program is stored, characterized in that, when the program is executed by a processor, the fracturing effect evaluation method according to any one of claims 1 to 7 is realized. 10. An electronic device, comprising: a processor and a memory; The memory is used to store computer programs; The processor is configured to execute the computer program stored in the memory, so that the terminal executes claim 1 The fracturing effect evaluation method described in any one of to 7.

Images