CN116537774A - Method and device for determining reservoir permeability, electronic equipment and storage medium - Google Patents

Abstract

The present application discloses a method and device for determining reservoir permeability, electronic equipment, and a storage medium. The method includes: after the target well is flushed and qualified, the water pump is controlled to perform multiple rounds of different pressure differences on the target well. pumping test; collect the target test parameters of the target well in each round of pumping test, and analyze and test the water sample in the target well to obtain the attribute parameters of the water sample in the target well; wherein , the target test parameters include water level drawdown and total water inflow per unit time; based on the target test parameters of the target drilling in each round of pumping test process, the reservoir permeability coefficient of the target drilling is calculated; using the The reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well are calculated to obtain the reservoir permeability.

Description

Method and device for determining reservoir permeability, electronic equipment, and storage medium

technical field

The present application relates to the technical field of resource evaluation, in particular to a method and device for determining reservoir permeability, electronic equipment, and a storage medium.

Background technique

Geothermal resource is a clean and renewable energy with large reserves, high efficiency and good stability, which can be used in many fields such as power generation, heating, hot spring bathing, agricultural irrigation and so on. Therefore, the current efforts to develop geothermal resources are also increasing. Before developing geothermal resources, it is usually necessary to evaluate the development potential of geothermal resources.

At present, when evaluating the development potential of geothermal resources, the reservoir permeability is always taken as one of the important parameters for evaluation. At present, the main method to obtain the permeability parameters of geothermal reservoirs is to collect rock samples in corresponding areas to be developed, and then analyze and test the rock samples to determine the reservoir permeability in this area.

However, it is relatively difficult to collect rock samples downhole, so it takes a lot of manpower and material resources, and the analysis and test parameters of the collected rock samples can only accurately reflect the conditions of the small local reservoirs where they are located, so It cannot accurately reflect the macroscopic performance of the reservoir in the area to be developed, so that the accuracy of the evaluation of the development potential is relatively low.

Contents of the invention

Based on the deficiencies of the prior art above, the present application provides a method and device, electronic equipment, and storage medium for determining the reservoir permeability, so as to solve the problem that the reservoir permeability obtained in the prior art cannot accurately reflect the problem of the area to be developed. The macro performance of the reservoir thus makes the assessment of development potential relatively less accurate.

In order to achieve the above object, the application provides the following technical solutions:

The embodiment of the present application provides a method for determining reservoir permeability, including:

After the target well is washed and qualified, the water pump is controlled to perform multiple rounds of pumping tests with different pressure differences on the target well;

Collect the target test parameters of the target well during each round of pumping tests, and analyze and test the water samples in the target well to obtain the attribute parameters of the water samples in the target well; wherein, the target The test parameters include water level drawdown and total water inflow per unit time;

Based on the target test parameters of the target well in each round of pumping tests, the reservoir permeability coefficient of the target well is calculated;

The reservoir permeability is calculated by using the reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well.

Optionally, in the method for determining the reservoir permeability described above, after the target well is washed and qualified, before controlling the water pump to perform multiple rounds of pumping tests with different pressure differences on the target well, it also includes:

Control the flushing device to carry out rotary jet flushing on the target drilling section by section from top to bottom according to the set rate;

After flushing the target well each time, detecting the bottom-hole sand height of the target well and the content of suspended solids in the water sample;

When it is detected that there is no sand at the bottom of the target well, and the suspended matter content of the water sample is less than the preset content, a test pumping test is performed on the target well, and the water temperature and water drawdown in the target well are collected in real time ;

Judging whether the water temperature and water drawdown in the target well are stable;

If it is judged that the water temperature and water drawdown in the target well are stable, it is determined that the well washing of the target well is qualified.

Optionally, in the method for determining reservoir permeability described above, the calculation of the reservoir permeability coefficient of the target well based on the target test parameters of the target well during each round of pumping tests includes:

Based on the diameter of the target well and the thick bottom of the target well, calculate the total water-producing area of the reservoir;

respectively calculating the difference in the drawdown of the target well and the difference in the total water inflow per unit time during two adjacent rounds of pumping tests to obtain multiple sets of parameter differences;

Respectively based on the total water outlet area of the reservoir, the parameter difference of each group and the pressure drop distance, using Darcy's law, calculate the reservoir permeability coefficient corresponding to the parameter difference of each group; wherein, the pressure drop The distance is the radius of the target well;

The average value of the reservoir permeability coefficient corresponding to the parameter difference of each group is determined as the reservoir permeability coefficient of the target well.

Optionally, in the method for determining the reservoir permeability described above, the reservoir permeability is calculated by using the reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well, including :

multiply the reservoir permeability coefficient of the target well, the fluid code of the water sample in the target well and the acceleration of gravity, and divide the obtained product by the fluid viscosity of the water sample in the target well to obtain reservoir permeability.

Optionally, in the method for determining the above-mentioned reservoir permeability, it also includes:

Collect the unit water inflow and the water inflow stabilization time per unit time of the target drilling during each round of pumping tests;

Draw a curve diagram of the relationship between the water inflow parameter and the water level drawdown, and draw a relationship curve between the water inflow parameter and the water inflow stabilization time; wherein, the water inflow parameter includes the unit water inflow and the water inflow The total water inflow per unit time.

The second aspect of the present application provides a device for determining reservoir permeability, including:

The pumping test unit is used to control the water pump to perform multiple rounds of pumping tests with different pressure differences on the target well after the target well is cleaned up;

The first collection unit is used to collect the target test parameters of the target well during each round of pumping tests, and obtain the attributes of the water samples in the target well by analyzing and testing the water samples in the target well Parameter; Wherein, described target test parameter comprises water level drawdown and total water inflow per unit time;

The coefficient calculation unit is used to calculate the reservoir permeability coefficient of the target well based on the target test parameters of the target well during each round of pumping tests;

The permeability calculation unit is used to calculate the reservoir permeability by using the reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well.

Optionally, in the above-mentioned device for determining the reservoir permeability, it also includes:

The control unit is used to control the flushing device to carry out rotary jet flushing on the target drilling section by section from top to bottom according to the set rate;

The detection unit is used to detect the bottom-hole sand sedimentation height of the target well and the content of suspended solids in the water sample after each flushing of the target well;

The test unit is used to conduct a test pumping test on the target well when it is detected that there is no sand at the bottom of the target well and the suspended matter content of the water sample is less than the preset content, and collect the water content of the target well in real time. water temperature and water depth;

A judging unit, used to judge whether the water temperature and water drawdown in the target well are stable;

The determining unit is configured to determine that the well cleaning of the target well is qualified when it is judged that the water temperature and water drawdown in the target well are stable.

Optionally, in the above-mentioned device for determining reservoir permeability, the coefficient calculation unit includes:

An area calculation unit, configured to calculate the total water-producing area of the reservoir based on the diameter of the target well and the thick bottom of the target well;

The difference calculation unit is used to separately calculate the difference of the water level drawdown of the target drilling well and the difference of the total water inflow per unit time during two adjacent rounds of pumping tests to obtain multiple sets of parameter differences ;

The coefficient calculation subunit is based on the total water outlet area of the reservoir, the parameter difference of each group and the pressure drop distance, and uses Darcy's law to calculate the reservoir permeability coefficient corresponding to the parameter difference of each group; wherein , the pressure drop distance is the radius of the target drilling;

The average value calculation unit is used to determine the average value of the reservoir permeability coefficients corresponding to the parameter differences of each group as the reservoir permeability coefficient of the target well.

Optionally, in the above-mentioned device for determining reservoir permeability, the permeability calculation unit includes:

The permeability calculation subunit is used to multiply the reservoir permeability coefficient of the target well, the fluid code of the water sample in the target well and the acceleration of gravity, and divide the obtained product by the The fluid viscosity of the water sample is obtained to obtain the reservoir permeability.

Optionally, in the above-mentioned device for determining the reservoir permeability, it also includes:

The second collection unit is used to collect the unit water inflow and the water inflow stabilization time per unit time of the target drilling during each round of pumping tests;

The drawing unit is used to draw the relationship curve between the water inflow parameter and the water level drawdown, and draw the relationship curve between the water inflow parameter and the water inflow stabilization time; wherein, the water inflow parameter includes the unit Water gushing volume and the total water gushing volume per unit time.

The third aspect of the present application provides an electronic device, including:

memory and processor;

Wherein, the memory is used to store programs;

The processor is configured to execute the program, and when the program is executed, it is specifically used to implement the method for determining reservoir permeability as described in any one of the above.

The fourth aspect of the present application provides a computer storage medium for storing a computer program. When the computer program is executed, it is used to implement the method for determining reservoir permeability as described in any one of the above.

The embodiment of the present application provides a method for determining the permeability of a reservoir. After the target well is washed and qualified, the water pump is controlled to perform multiple rounds of pumping tests with different pressure differences on the target well, and the data collected during each round of pumping tests are collected. The target test parameters of the target well, and the attribute parameters of the water sample in the target well are obtained by analyzing and testing the water sample in the target well. Among them, the target test parameters include water level drawdown and total water inflow per unit time. Since the target test parameters can reflect the permeability of the water body, the reservoir permeability coefficient of the target well can be calculated based on the target test parameters of the target well during each round of pumping tests. Finally, the reservoir permeability coefficient of the target drilling and the attribute parameters of the water samples in the target drilling are used to calculate the reservoir permeability, so that the reservoir permeability can be determined through the pumping test and the collection of relevant hydrogeological parameters for analysis . The pumping test and collection of relevant test parameters are more convenient than collecting rock samples. Moreover, the target test parameters reflect the water permeability of a large area, so the obtained reservoir permeability can more accurately reflect the macroscopic performance of the reservoir in the area to be developed, thus effectively ensuring the accuracy of the evaluation of the development potential.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present application, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a flow chart of a method for determining reservoir permeability provided by an embodiment of the present application;

Fig. 2 is a flow chart of a well washing method provided by the embodiment of the present application;

3 is a schematic diagram of a relationship curve between a water inflow parameter and a water level drawdown provided in an embodiment of the present application;

FIG. 4 is a schematic diagram of a relationship curve between a water inflow parameter and a water inflow stabilization time provided by an embodiment of the present application;

Fig. 5 is a flow chart of a method for calculating the reservoir permeability coefficient provided by the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a device for determining reservoir permeability provided in an embodiment of the present application;

FIG. 7 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

In this application, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. an actual relationship or order. Moreover, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements but also items not expressly listed other elements, or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The embodiment of the present application provides a method for determining reservoir permeability, as shown in Figure 1, comprising the following steps:

S101. After the target well is washed and qualified, the water pump is controlled to perform multiple rounds of pumping tests with different pressure differences on the target well.

Wherein, the target drilling refers to the well drilled for analyzing the reservoir permeability of the area to be explored.

It should be noted that, in the embodiment of the present application, the reservoir permeability is determined by performing a pumping test on the well. Specifically, by way of pumping test, the water gushing situation of the reservoir in the drilling is analyzed, and the reservoir permeability is determined, that is, the water seepage situation is analyzed to analyze the reservoir permeability. It is more convenient to conduct pumping tests and obtain corresponding hydrogeological acceptance numbers than to collect rock samples, so it can save a lot of manpower and physics. Moreover, water can flow into the well from all directions, so the reservoir permeability determined by pumping water can better reflect the macroscopic performance of the reservoir in the area to be developed.

Specifically, through the set parameters, the water pump can be controlled to perform multiple rounds of pumping tests with different pressure differences on the target well. At least two rounds of pumping tests with different pressure differences are required. Three pumping tests with different pressure differences are usually carried out to analyze the permeability of the reservoir based on the transformation of the water body during the pumping tests with different pressure differences.

Optionally, a high-temperature electric submersible pump can be used for the pumping test, and the power of the selected pump is usually not less than 50kW, and the lift is not lower than 150m, so as to meet the requirements of the pumping test. Generally, when the water pumping test is lowered into a maximum depth of 100 to 200 meters, the effect obtained is relatively good. Of course, depending on the actual situation, corresponding water pumps and pumping depths can also be used.

Optionally, during the pumping test, the pumping flow can be controlled by frequency conversion equipment, the water volume can be observed with an electromagnetic flowmeter, the water temperature and air temperature at the wellhead can be observed with a mercury thermometer, and the water level and buried depth can be measured with a measuring rope and an ammeter.

Since the sand and stone in the water in the well will affect the analysis results, it is necessary to clean the well after the well is completely drilled, and start the pumping test after the well is qualified.

Optionally, another embodiment of the present application provides a well washing method, as shown in Figure 2, comprising the following steps:

S201. Control the flushing device to perform rotary jet flushing on the target drilling section by section from top to bottom according to the set rate.

Specifically, during well flushing, the worker may first lower the suction pipe, and after the pipe is finished, lower the drill pipe and the puncher to form a flushing device. Then the flushing rate is set so that the flushing device can be automatically controlled by the program to carry out rotary jet flushing on the target drilling section by section from top to bottom according to the set rate. Among them, the flushing rate is usually set at: 5-10min/m.

Optionally, an electric submersible pump can be used for pumping and washing, and the cumulative well washing time is usually 24 hours, which can effectively guarantee the flushing and each well.

S202. After flushing the target well each time, detect the bottom-hole sand height of the target well and the content of suspended solids in the water sample.

S203. When it is detected that there is no sand at the bottom of the target well and the suspended matter content of the water sample is less than the preset content, conduct a pumping test on the target well, and collect the water temperature and water drawdown in the target well in real time.

It should be noted that when there is no sand at the bottom of the target well, that is, when the sand is washed until the water is clear, the bottom of the well is zero, and the suspended matter content of the water sample is less than the preset content, for example, less than 0.1%. , it can be considered to be flushed to meet the requirements. However, in order to further ensure that the water quality at this time will not affect the analysis results, in the embodiment of this application, a water trial test will be carried out first, and the water temperature and water volume drawdown in the target drilling will be collected in real time.

Specifically, for the test pumping test, it can be realized by controlling the pumping equipment.

S204. Determine whether the water temperature and water drawdown in the target well are stable.

Wherein, if it is judged that the water temperature and water drawdown in the target well are stable, it proves that the well washing effect is qualified and meets the official water pumping requirements, so step S205 is executed at this time.

If the water temperature or water volume drawdown in the target well is unstable, it means that the test pumping result is unqualified. At this time, it is necessary to find out the reason. After the problem is solved, the pumping test is repeated and the pumping effect is qualified, further formal pumping operations will be carried out.

S205. Determine that the well washing of the target well is qualified.

S102. Collect target test parameters of the target well in each round of pumping tests, and analyze and test the water sample in the target well to obtain attribute parameters of the water sample in the target well.

Among them, the target test parameters include water level drawdown and total water inflow per unit time.

Optionally, other fixed parameters required in the subsequent calculation process, such as drilling directivity, reservoir thickness and other adopted numbers, can also be obtained at this time.

Specifically, since the required attribute parameters of the water sample are some conventional attribute parameters of the water sample, such as viscosity and density, the corresponding detection equipment is preset so that the water sample collected from the target well can be detected by controlling the detection equipment. The detection is performed directly to obtain the attribute parameters of the water sample in the target well.

Optionally, in order to intuitively translate the hydrogeological conditions of the target well, in another embodiment of the present application, it further includes:

Collect the unit water inflow and the water inflow stabilization time per unit time of the target drilling during each round of pumping tests, and draw the relationship curve between the water inflow parameters and the water level drawdown, and draw the relationship between the water inflow parameters and the water inflow stabilization time Graph.

Wherein, the water inflow parameter includes the unit water inflow and the total water inflow per unit time. The total water inflow per unit time is the total water inflow per unit time, and the unit water inflow per unit time is the water inflow per unit reservoir per unit time.

Specifically, for drawing the relationship curve between water inflow parameters and water level drawdown, the unit water inflow and the total water inflow per unit time are taken as the ordinate, while the abscissa is the water level drawdown, for example, as shown in Figure 3, the left vertical The coordinate is the total water inflow Q per unit time, the ordinate on the right is the unit water inflow q, and the abscissa is the water level drawdown S.

Similarly, the relationship curve between water inflow parameter and water inflow stabilization time takes the unit water inflow and the total water inflow per unit time as the ordinate, and the water inflow stabilization time as the abscissa, for example, as shown in Figure 4, the left The ordinate is the total water inflow Q per unit time, the right ordinate is the unit water inflow q, and the abscissa is the water inflow stabilization time t.

Wherein, the water inflow stabilization time is the time when the water inflow is stable, and is usually set to 48 hours, 24 hours and 12 hours.

S103. Based on the target test parameters of the target well during each round of pumping tests, calculate the reservoir permeability coefficient of the target well.

It should be noted that the target test parameters include the water level drawdown and the total water inflow per unit time during the pumping test, so the target test parameters can reflect the permeability of the reservoir to the water body, so the target drilling performance can be calculated based on the target test parameters. Reservoir permeability coefficient.

Specifically, the reservoir permeability coefficient of the target drilling can be calculated based on Darcy's law.

Optionally, in another embodiment of the present application, a specific implementation manner of step S103, as shown in FIG. 5 , includes the following steps:

S501. Based on the diameter of the target well and the thick bottom of the target well, calculate the total water-producing area of the reservoir.

Since what is obtained is the total water inflow per unit time, not the water inflow per unit area per unit time, it is necessary to calculate the total water outflow area of the reservoir based on the diameter of the target well and the thick bottom of the target well.

Specifically, the total water-producing area of the reservoir can be obtained by multiplying the diameter of the target well by the thick bottom of the target well and multiplying by the pi.

S502. Calculate the difference between the water level drawdown of the target well and the total water inflow per unit time in two adjacent rounds of pumping tests to obtain multiple sets of parameter differences.

Specifically, Darcy's law is: Namely: /> therefore:

Among them, K is the permeability coefficient of the reservoir; h ₁ and h ₂ are the liquid levels of the two pumpings respectively, so Δh is the liquid level difference between the two pumpings; ΔQ is the difference of the unit total water inflow between the two pumpings; A is The total outflow area of the reservoir; L is the pressure drop distance.

Therefore, it is required to obtain the permeability coefficient of the reservoir, and it is necessary to calculate the liquid level difference between the two pumpings and the difference in the unit total water inflow between the two pumpings.

S503. Calculate and obtain the reservoir permeability coefficient corresponding to each group of parameter differences based on the total water outlet area of the reservoir, the difference of each group of parameters, and the pressure drop distance by using Darcy's law.

Among them, the pressure drop distance is the radius of the target well.

Specifically, the total water outlet area of the reservoir, a set of parameter differences and the pressure drop distance are substituted into the above calculation formula of the reservoir permeability coefficient, and then the reservoir permeability coefficient corresponding to a set of parameter differences can be obtained .

S504. Determine the mean value of the reservoir permeability coefficient corresponding to the parameter difference of each group as the reservoir permeability coefficient of the target well.

In order to improve the accuracy of the reservoir permeability coefficient of the target drilling, so in the embodiment of this application, multiple reservoir permeability coefficients are calculated, and the average value of each reservoir permeability coefficient is used as the reservoir of the target drilling permeability coefficient.

S104. Using the reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well, calculate the reservoir permeability.

Since liquids with different properties have different permeability, it is necessary to further consider the property parameters of the water samples in the target well after obtaining the reservoir permeability coefficient of the target well, and finally calculate the energy storage permeability.

Specifically, in another embodiment of the present application, a specific implementation of step S104 includes:

The reservoir permeability coefficient of the target well, the fluid code of the water sample in the target well and the acceleration of gravity are multiplied, and the obtained product is divided by the fluid viscosity of the water sample in the target well to obtain the reservoir permeability.

The embodiment of the present application provides a method for determining the permeability of a reservoir. After the target well is washed and qualified, the water pump is controlled to perform multiple rounds of pumping tests with different pressure differences on the target well, and the data collected during each round of pumping tests are collected. The target test parameters of the target well, and the attribute parameters of the water sample in the target well are obtained by analyzing and testing the water sample in the target well. Among them, the target test parameters include water level drawdown and total water inflow per unit time. Since the target test parameters can reflect the permeability of the water body, the reservoir permeability coefficient of the target well can be calculated based on the target test parameters of the target well during each round of pumping tests. Finally, the reservoir permeability coefficient of the target drilling and the attribute parameters of the water samples in the target drilling are used to calculate the reservoir permeability, so that the reservoir permeability can be determined through the pumping test and the collection of relevant hydrogeological parameters for analysis . The pumping test and collection of relevant test parameters are more convenient than collecting rock samples. Moreover, the target test parameters reflect the water permeability of a large area, so the obtained reservoir permeability can more accurately reflect the macroscopic performance of the reservoir in the area to be developed, thus effectively ensuring the accuracy of the evaluation of the development potential.

Another embodiment of the present application provides a device for determining reservoir permeability, as shown in Figure 6, including:

The pumping test unit 601 is used to control the water pump to perform multiple rounds of pumping tests with different pressure differences on the target well after the target well is flushed out.

The first collection unit 602 is used to collect the target test parameters of the target well in each round of pumping tests, and obtain the attribute parameters of the water sample in the target well by analyzing and testing the water sample in the target well.

Among them, the target test parameters include water level drawdown and total water inflow per unit time.

The coefficient calculation unit 603 is configured to calculate the reservoir permeability coefficient of the target well based on the target test parameters of the target well during each round of pumping tests.

The permeability calculation unit 604 is configured to use the reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well to calculate the reservoir permeability.

Optionally, the device for determining reservoir permeability provided in another embodiment of the present application further includes:

The control unit is used to control the flushing device to carry out rotary jet flushing on the target drilling section by section from top to bottom according to the set rate.

The detection unit is used to detect the bottom-hole sand height of the target well and the content of the water sample suspension after each flushing of the target well.

The test unit is used to conduct a test pumping test on the target well when it is detected that there is no sand at the bottom of the target well and the suspended matter content of the water sample is less than the preset content, and collect the water temperature and water drawdown in the target well in real time.

The judging unit is used to judge whether the water temperature and water drawdown in the target well are stable.

The determination unit is used to determine that the well cleaning of the target well is qualified when it is judged that the water temperature and water drawdown in the target well are stable.

Optionally, in the device for determining reservoir permeability provided in another embodiment of the present application, the coefficient calculation unit includes:

The area calculation unit is used to calculate the total water-producing area of the reservoir based on the diameter of the target well and the thick bottom of the target well.

The difference calculation unit is used to separately calculate the difference of the water level drawdown of the target well and the difference of the total water inflow per unit time in two adjacent rounds of pumping tests to obtain multiple sets of parameter differences.

The coefficient calculation sub-unit calculates the reservoir permeability coefficient corresponding to the difference of each group of parameters based on the total outflow area of the reservoir, the difference of each group of parameters and the pressure drop distance, respectively, by using Darcy's law. Among them, the pressure drop distance is the radius of the target well.

The average value calculation unit is used to determine the average value of the reservoir permeability coefficient corresponding to the difference of each group of parameters as the reservoir permeability coefficient of the target drilling.

Optionally, in the device for determining reservoir permeability provided in another embodiment of the present application, the permeability calculation unit includes:

The permeability calculation subunit is used to multiply the reservoir permeability coefficient of the target well, the fluid code of the water sample in the target well and the acceleration of gravity, and divide the obtained product by the fluid viscosity of the water sample in the target well , to get the reservoir permeability.

Optionally, the device for determining reservoir permeability provided in another embodiment of the present application further includes:

The second collection unit is used to collect the unit water inflow per unit time and the water inflow stabilization time of the target drilling during each round of pumping tests.

The drawing unit is used for drawing the relationship curve between the water inflow parameter and the water level drawdown, and the relationship curve between the water inflow parameter and the water inflow stabilization time.

Wherein, the water inflow parameter includes the unit water inflow and the total water inflow per unit time.

It should be noted that, for the specific working process of each unit provided in the above embodiments of the present application, reference may be made to the corresponding steps in the above method embodiments, which will not be repeated here.

Another embodiment of the present application provides an electronic device, as shown in FIG. 7 , including:

memory 701 and processor 702.

Among them, the memory 701 is used to store programs.

The processor 702 is configured to execute the program stored in the memory 701. When the program is executed, it is specifically used to implement the method for determining the reservoir permeability as provided in any one of the above embodiments.

Another embodiment of the present application provides a computer storage medium for storing a computer program. When the computer program is executed, it is used to implement the method for determining reservoir permeability as provided in any one of the above embodiments.

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

Professionals can further realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, computer software or a combination of the two. In order to clearly illustrate the possibility of hardware and software For interchangeability, in the above description, the composition and steps of each example have been generally described according to their functions. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A method for determining reservoir permeability, comprising: After the target well is washed and qualified, the water pump is controlled to perform multiple rounds of pumping tests with different pressure differences on the target well; Collect the target test parameters of the target well during each round of pumping tests, and analyze and test the water samples in the target well to obtain the attribute parameters of the water samples in the target well; wherein, the target The test parameters include water level drawdown and total water inflow per unit time; Based on the target test parameters of the target well in each round of pumping tests, the reservoir permeability coefficient of the target well is calculated; The reservoir permeability is calculated by using the reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well. 2. The method according to claim 1, characterized in that, after the target well is washed and qualified, before controlling the water pump to carry out multiple rounds of different pressure differential pumping tests on the target well, it also includes: Control the flushing device to carry out rotary jet flushing on the target drilling section by section from top to bottom according to the set rate; After flushing the target well each time, detecting the bottom-hole sand height of the target well and the content of suspended solids in the water sample; When it is detected that there is no sand at the bottom of the target well, and the suspended matter content of the water sample is less than the preset content, a test pumping test is performed on the target well, and the water temperature and water drawdown in the target well are collected in real time ; Judging whether the water temperature and water drawdown in the target well are stable; If it is judged that the water temperature and water drawdown in the target well are stable, it is determined that the well washing of the target well is qualified. 3. method according to claim 1, is characterized in that, described based on the target test parameter of described target drilling in each round of pumping test process, calculates the reservoir permeability coefficient of described target drilling, comprising: Based on the diameter of the target well and the thick bottom of the target well, calculate the total water-producing area of the reservoir; respectively calculating the difference in the drawdown of the target well and the difference in the total water inflow per unit time during two adjacent rounds of pumping tests to obtain multiple sets of parameter differences; Respectively based on the total water outlet area of the reservoir, the parameter difference of each group and the pressure drop distance, using Darcy's law, calculate the reservoir permeability coefficient corresponding to the parameter difference of each group; wherein, the pressure drop The distance is the radius of the target well; The average value of the reservoir permeability coefficient corresponding to the parameter difference of each group is determined as the reservoir permeability coefficient of the target well. 4. method according to claim 1, is characterized in that, described utilizing the reservoir permeability coefficient of described target drilling and the attribute parameter of the water sample in described target drilling, calculate reservoir permeability, comprising: multiply the reservoir permeability coefficient of the target well, the fluid code of the water sample in the target well and the acceleration of gravity, and divide the obtained product by the fluid viscosity of the water sample in the target well to obtain reservoir permeability. 5. The method according to claim 1, further comprising: Collect the unit water inflow and the water inflow stabilization time per unit time of the target drilling during each round of pumping tests; Draw a curve diagram of the relationship between the water inflow parameter and the water level drawdown, and draw a relationship curve between the water inflow parameter and the water inflow stabilization time; wherein, the water inflow parameter includes the unit water inflow and the water inflow The total water inflow per unit time. 6. A device for determining reservoir permeability, characterized in that it comprises: The pumping test unit is used to control the water pump to perform multiple rounds of pumping tests with different pressure differences on the target well after the target well is cleaned up; The first collection unit is used to collect the target test parameters of the target well during each round of pumping tests, and obtain the attributes of the water samples in the target well by analyzing and testing the water samples in the target well Parameter; Wherein, described target test parameter comprises water level drawdown and total water inflow per unit time; The coefficient calculation unit is used to calculate the reservoir permeability coefficient of the target well based on the target test parameters of the target well during each round of pumping tests; The permeability calculation unit is used to calculate the reservoir permeability by using the reservoir permeability coefficient of the target well and the attribute parameters of the water samples in the target well. 7. The device according to claim 6, further comprising: The control unit is used to control the flushing device to carry out rotary jet flushing on the target drilling section by section from top to bottom according to the set rate; The detection unit is used to detect the bottom-hole sand sedimentation height of the target well and the content of suspended solids in the water sample after each flushing of the target well; The test unit is used to conduct a test pumping test on the target well when it is detected that there is no sand at the bottom of the target well and the suspended matter content of the water sample is less than the preset content, and collect the water content of the target well in real time. water temperature and water depth; A judging unit, used to judge whether the water temperature and water drawdown in the target well are stable; The determining unit is configured to determine that the well cleaning of the target well is qualified when it is judged that the water temperature and water drawdown in the target well are stable. 8. The device according to claim 6, wherein the coefficient calculation unit comprises: An area calculation unit, configured to calculate the total water-producing area of the reservoir based on the diameter of the target well and the thick bottom of the target well; The difference calculation unit is used to separately calculate the difference of the water level drawdown of the target drilling well and the difference of the total water inflow per unit time during two adjacent rounds of pumping tests to obtain multiple sets of parameter differences ; The coefficient calculation subunit is based on the total water outlet area of the reservoir, the parameter difference of each group and the pressure drop distance, and uses Darcy's law to calculate the reservoir permeability coefficient corresponding to the parameter difference of each group; wherein , the pressure drop distance is the radius of the target drilling; The average value calculation unit is used to determine the average value of the reservoir permeability coefficients corresponding to the parameter differences of each group as the reservoir permeability coefficient of the target well. 9. An electronic device, characterized in that it comprises: memory and processor; Wherein, the memory is used to store programs; The processor is configured to execute the program, and when the program is executed, it is specifically used to implement the method for determining reservoir permeability according to any one of claims 1 to 5. 10. A computer storage medium, characterized in that it is used to store a computer program, and when the computer program is executed, it is used to realize the method for determining reservoir permeability according to any one of claims 1 to 5.