Methods, apparatus, devices, and storage media of determining recoverable shallow gas reservoirs

Abstract

The application discloses a method, device, equipment and storage medium for determining a mineable shallow gas reservoir, and belongs to the technical field of petroleum and natural gas development geology. The method comprises the following steps: acquiring parameter values of M characteristic parameters of N shallow gas reservoirs which are measured in advance; determining optimal parameter values corresponding to each characteristic parameter; for each shallow gas reservoir, performing weighted summation on the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir and the weight values corresponding to each characteristic parameter to obtain a first mining characteristic value corresponding to each shallow gas reservoir; performing weighted summation on the optimal parameter values corresponding to the M characteristic parameters and the weight values corresponding to each characteristic parameter to obtain a second mining characteristic value; and determining a target mineable shallow gas reservoir from the N shallow gas reservoirs based on the second mining characteristic value and the first mining characteristic value corresponding to each shallow gas reservoir. The application can improve the efficiency of determining whether a shallow gas reservoir can be mined.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil and gas development geology, and in particular to a method and device for determining a recoverable shallow gas reservoir, equipment and a storage medium. BACKGROUND

[0002] A shallow gas reservoir refers to various types of natural gas resources with a relatively shallow burial depth (generally within 1800m) and a relatively small single gas reservoir reserve (generally within 5000x10 4 m 3 The shallow gas reservoir has the characteristics of shallow burial depth, small gas reservoir reserve, complex origin, and wide distribution.

[0003] In the existing oil and gas exploitation technology, the cost of deploying a new well to exploit a shallow gas reservoir is relatively high and does not have economic benefits. However, since the general shallow gas reservoir is often distributed in the same area as the oil or gas layer with a larger reserve, in the existing oil and gas exploitation technology, the old well with low production or stoppage can be used to exploit the shallow gas reservoir in the corresponding area. However, since the origin of the shallow gas reservoir is complex, some shallow gas reservoirs are not suitable for exploitation, such as the shallow gas reservoir with a large amount of water. Therefore, before exploiting the shallow gas reservoir, engineers need to analyze the parameter values of the pre-measured characteristic parameters of the shallow gas reservoir, such as the lithology, shale content, porosity, permeability, and resistivity of the shallow gas reservoir, so as to determine whether to exploit the corresponding shallow gas reservoir.

[0004] In the process of implementing the present application, the inventors found that the related art at least has the following problems:

[0005] Since there are many shallow gas reservoirs, in the prior art, engineers need to make a human judgment to determine whether the corresponding shallow gas reservoir can be exploited according to the parameter values of the characteristic parameters of the shallow gas reservoir, which results in a low efficiency of determining whether the shallow gas reservoir can be exploited. SUMMARY

[0006] The embodiments of the present application provide a method, device, equipment and storage medium for determining a recoverable shallow gas reservoir, which can improve the efficiency of determining whether the shallow gas reservoir can be exploited. The technical solution is as follows:

[0007] In a first aspect, a method for determining a recoverable shallow gas reservoir is provided, and the method comprises:

[0008] Obtaining parameter values of M characteristic parameters of N shallow gas reservoirs pre-measured, wherein N and M are positive integers;

[0009] For each characteristic parameter, determining an optimal parameter value in the corresponding N parameter values to obtain the optimal parameter values corresponding to the M characteristic parameters, respectively;

[0010] For each shallow gas reservoir, the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir are weighted and summed with the weight values corresponding to each characteristic parameter to obtain a first exploitation characteristic value corresponding to each shallow gas reservoir;

[0011] The optimal parameter values corresponding to the M characteristic parameters are weighted and summed with the weight values corresponding to each characteristic parameter to obtain a second exploitation characteristic value;

[0012] Based on the second exploitation characteristic value and the first exploitation characteristic value corresponding to each shallow gas reservoir, a target shallow gas reservoir that can be exploited is determined from the N shallow gas reservoirs.

[0013] Optionally, the M characteristic parameters include lithology, shale content, porosity, permeability, resistivity, acoustic time difference, neutron gamma relative value, gas saturation, and gas layer thickness of the shallow gas reservoir.

[0014] Optionally, for each characteristic parameter, the optimal parameter value is determined from the corresponding N parameter values, including:

[0015] For any one of the lithology, porosity, resistivity, acoustic time difference, neutron gamma relative value, gas saturation, and gas layer thickness of the shallow gas reservoir, the maximum parameter value corresponding to the characteristic parameter is determined as the optimal parameter value corresponding to the characteristic parameter;

[0016] For any one of the shale content and permeability of the shallow gas reservoir, the minimum parameter value corresponding to the characteristic parameter is determined as the optimal parameter value corresponding to the characteristic parameter.

[0017] Optionally, before the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir are weighted and summed with the weight values corresponding to each characteristic parameter for each shallow gas reservoir, the method further includes:

[0018] The parameter values of the M characteristic parameters corresponding to each shallow gas reservoir are normalized.

[0019] Optionally, before the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir are weighted and summed with the weight values corresponding to each characteristic parameter for each shallow gas reservoir, the method further includes:

[0020] The exploitation amounts of L exploited shallow gas reservoirs and the parameter values of the M characteristic parameters corresponding to each exploited shallow gas reservoir are obtained;

[0021] Based on the exploitation amounts of the L exploited shallow gas reservoirs and the parameter values of the M characteristic parameters corresponding to each exploited shallow gas reservoir, the correlation between each characteristic parameter and the exploitation amount is determined;

[0022] determine a weight value corresponding to each characteristic parameter based on the correlation between the characteristic parameter and the production amount.

[0023] Optionally, the second aspect further includes:

[0024] determining a ratio of the first production characteristic value and the second production characteristic value for each shallow gas reservoir;

[0025] if the ratio is not lower than a preset ratio, determining the shallow gas reservoir as a target shallow gas reservoir that can be produced.

[0026] A second aspect provides a device for determining a shallow gas reservoir that can be produced, and the device includes:

[0027] a first determining module configured to determine, for each characteristic parameter, an optimal parameter value from the corresponding N parameter values, to obtain optimal parameter values corresponding to the M characteristic parameters respectively;

[0028] a first determining module configured to determine, for each characteristic parameter, an optimal parameter value from the corresponding N parameter values, to obtain optimal parameter values corresponding to the M characteristic parameters respectively;

[0029] a calculating module configured to, for each shallow gas reservoir, perform weighted summation on the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir and the weight values corresponding to each characteristic parameter, to obtain a first production characteristic value corresponding to each shallow gas reservoir; and perform weighted summation on the optimal parameter values corresponding to the M characteristic parameters respectively and the weight values corresponding to each characteristic parameter, to obtain a second production characteristic value;

[0030] the first determining module is further configured to determine a target shallow gas reservoir that can be produced from the N shallow gas reservoirs based on the second production characteristic value and the first production characteristic value corresponding to each shallow gas reservoir.

[0031] Optionally, the M characteristic parameters include lithology, shale content, porosity, permeability, resistivity, acoustic time difference, neutron gamma relative value, gas saturation, and gas layer thickness.

[0032] Optionally, the first determining module is configured to, for any one of the lithology, porosity, resistivity, acoustic time difference, neutron gamma relative value, gas saturation, and gas layer thickness, determine the maximum parameter value corresponding to the characteristic parameter as the optimal parameter value corresponding to the characteristic parameter.

[0033] For any characteristic parameter of the shale content and the permeability of the shallow gas reservoir, the minimum parameter value corresponding to the characteristic parameter is determined as the optimal parameter value corresponding to the characteristic parameter.

[0034] Optionally, the apparatus further comprises a processing module configured to:

[0035] The parameter values of the M characteristic parameters corresponding to each shallow gas reservoir are normalized.

[0036] Optionally, the apparatus further comprises a second determining module configured to:

[0037] The production amounts of L mined shallow gas reservoirs and the parameter values of the M characteristic parameters corresponding to each mined shallow gas reservoir are obtained;

[0038] The correlation degrees between each characteristic parameter and the production amount are determined respectively based on the production amounts of the L mined shallow gas reservoirs and the parameter values of the M characteristic parameters corresponding to each mined shallow gas reservoir;

[0039] The weight value corresponding to each characteristic parameter is determined based on the correlation degree between the characteristic parameter and the production amount.

[0040] Optionally, the first determining module is configured to:

[0041] For each shallow gas reservoir, the ratio of the corresponding first production characteristic value to the second production characteristic value is determined;

[0042] If the ratio is not lower than a preset ratio, the shallow gas reservoir is determined as a mineable target shallow gas reservoir.

[0043] In still another aspect, a computer device is provided, which comprises a processor and a memory, and the memory stores at least one instruction, which is loaded and executed by the processor to implement the operations performed by the method for determining a mineable shallow gas reservoir.

[0044] In still another aspect, a computer readable storage medium is provided, which stores at least one instruction, which is loaded and executed by a processor to implement the operations performed by the method for determining a mineable shallow gas reservoir.

[0045] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0046] By acquiring parameter values corresponding to each characteristic parameter of the plurality of shallow gas reservoirs, then determining a corresponding first exploitation characteristic value in each shallow gas reservoir according to the parameter value corresponding to each shallow gas reservoir, and then according to the optimal parameter value in the corresponding characteristic parameters of the plurality of shallow gas reservoirs, then determining a second exploitation characteristic value according to the optimal parameter value corresponding to each characteristic parameter, so that the shallow gas reservoir suitable for exploitation can be determined in the plurality of shallow gas reservoirs through the first exploitation characteristic value and the second exploitation characteristic value. It can be seen that the present application does not need to make artificial judgment on each shallow gas reservoir, and can improve the efficiency of determining whether the shallow gas reservoir can be exploited. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0048] Figure 1 The relationship diagram of cumulative gas production and lithology provided by the embodiment of the present application;

[0049] Figure 2 The relationship diagram of cumulative gas production and shale content provided by the embodiment of the present application;

[0050] Figure 3 The relationship diagram of cumulative gas production and porosity provided by the embodiment of the present application;

[0051] Figure 4 The relationship diagram of cumulative gas production and permeability provided by the embodiment of the present application;

[0052] Figure 5 The relationship diagram of cumulative gas production and resistivity provided by the embodiment of the present application;

[0053] Figure 6 The relationship diagram of cumulative gas production and acoustic travel time provided by the embodiment of the present application;

[0054] Figure 7 The relationship diagram of cumulative gas production and neutron gamma relative value provided by the embodiment of the present application;

[0055] Figure 8 The relationship diagram of cumulative gas production and gas saturation provided by the embodiment of the present application;

[0056] Figure 9 The relationship diagram of cumulative gas production and gas layer thickness provided by the embodiment of the present application;

[0057] Figure 10 The method flowchart for determining the exploitable shallow gas reservoir provided by the embodiment of the present application;

[0058] Figure 11 is a device structure schematic diagram for determining the exploitable shallow gas reservoir provided by an embodiment of the present application;

[0059] Figure 12 is an electronic device structure schematic diagram provided by an embodiment of the present application. DETAILED DESCRIPTION

[0060] To make the purpose, technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0061] The method for determining the exploitable shallow gas reservoir provided by the present application can be implemented by a terminal. The terminal can be provided with a processor and a memory, wherein the memory can store programs and data corresponding to the method for determining the exploitable shallow gas reservoir, and the processor can execute the programs stored in the memory to process the corresponding data, thereby implementing the method for determining the exploitable shallow gas reservoir provided by the present application. The terminal can be a mobile phone, a tablet computer, a smart wearable device, a desktop computer, a notebook computer, etc.

[0062] Figure 10 is a method flowchart for determining the exploitable shallow gas reservoir provided by an embodiment of the present application. Referring to Figure 10 , the embodiment includes:

[0063] Step 1001: Obtain parameter values of M characteristic parameters corresponding to N shallow gas reservoirs to be determined whether to be exploited.

[0064] Wherein, N and M are positive integers. The N shallow gas reservoirs to be determined whether to be exploited can be a plurality of shallow gas reservoirs corresponding to a plurality of exploitation wells. The parameter values of the M characteristic parameters corresponding to each shallow gas reservoir can be obtained according to existing geological, logging and production dynamic data, etc. That is, a technician can obtain each characteristic parameter corresponding to a batch (N) of unexploited shallow gas reservoirs according to existing geological, logging and production dynamic data, etc., and then determine the exploitable shallow gas reservoir in the batch of unexploited shallow gas reservoirs according to the parameter values of each characteristic parameter corresponding to the batch of unexploited shallow gas reservoirs.

[0065] Optionally, the M characteristic parameters can respectively include: lithology, shale content, porosity, permeability, resistivity, acoustic time difference, neutron gamma relative value, gas saturation, gas layer thickness, etc. of the shallow gas reservoir.

[0066] The shallow gas reservoirs are mostly distributed in the upper tertiary system strata within 1800m, the reservoir lithology is mainly fine sandstone, the reservoir porosity is mostly 25-45%, the permeability is 500-9999x10 -3 μm 2, the gas saturation is 30-75%, the gas layer shows high resistivity, generally 6-20 Ω.m, high acoustic time, generally 350-550 μs / m, high neutron gamma, and the neutron gamma relative value is greater than 0.3. There are multiple factors reflecting and judging whether a shallow gas reservoir is suitable for exploitation, which are affected by reservoir lithology and physical property, well logging electrical property, gas saturation, and gas layer thickness. These factors have certain influence on the yield of the gas layer after the layer is supplemented. Therefore, when the shallow gas reservoir layer supplement target is evaluated and optimized, whether the shallow gas reservoir is suitable for exploitation can be determined through the corresponding characteristic parameters of the shallow gas reservoir. In the embodiment of the application, the reservoir lithology can be selected as the lithology and the shale content, the physical property is selected as the porosity and the permeability, the electrical property is selected as the resistivity, the acoustic time and the neutron gamma relative value, and the oil and gas bearing property is selected as the gas saturation.

[0067] In addition, it should be noted that in the embodiment of the application, the characteristic parameters can include the above-mentioned 9 characteristic parameters, but are not limited to the above-mentioned 9 characteristic parameters. In the embodiment of the application, the characteristic parameters of the shallow gas reservoir can be obtained from the existing geological, logging and production dynamic data, that is, the more the number of the characteristic parameters corresponding to each shallow gas reservoir to be exploited recorded in the existing geological, logging and production dynamic data, the more the characteristic parameters can be selected. If the number of the characteristic parameters corresponding to each shallow gas reservoir to be exploited recorded in the existing geological, logging and production dynamic data is small, fewer characteristic parameters can also be selected to complete the subsequent processing of determining whether the shallow gas reservoir can be exploited.

[0068] Step 1002, for each characteristic parameter, determining the optimal parameter value in the corresponding N parameter values, and obtaining the optimal parameter value corresponding to each of the M characteristic parameters.

[0069] Since different characteristic parameters may have positive or negative correlation with the exploitation amount of the shallow gas reservoir, the optimal parameter value corresponding to each characteristic parameter can be determined from all the parameter values of the characteristic parameters corresponding to the N obtained shallow gas reservoirs.

[0070] For any one of the lithology, porosity, resistivity, acoustic time, neutron gamma relative value, gas saturation and gas layer thickness of the shallow gas reservoir, the maximum parameter value corresponding to the characteristic parameter is determined as the optimal parameter value corresponding to the characteristic parameter. For any one of the shale content and the permeability of the shallow gas reservoir, the minimum parameter value corresponding to the characteristic parameter is determined as the optimal parameter value corresponding to the characteristic parameter.

[0071] For example, in the multiple shallow gas reservoirs corresponding to the gas layer thickness values, the highest gas layer thickness value is determined as the optimal parameter value corresponding to the gas layer thickness. For example, in the multiple shallow gas reservoirs corresponding to the shale content values, the lowest shale content value is determined as the optimal parameter value corresponding to the gas layer thickness. In this way, in a batch of shallow gas reservoirs, the optimal parameter value corresponding to each characteristic parameter can be determined.

[0072] Step 1003, for each shallow gas reservoir, based on the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir and the weight values corresponding to each characteristic parameter, weighted sum is obtained. The first exploitation characteristic value corresponding to each shallow gas reservoir.

[0073] In implementation, the weight value corresponding to each characteristic parameter can be determined according to the correlation between each characteristic parameter corresponding to the shallow gas reservoir and the exploitation amount. Then the weight value corresponding to each characteristic parameter and the parameter value of the characteristic parameter corresponding to each shallow gas reservoir can be weighted and summed to obtain the first exploitation characteristic value corresponding to each shallow gas reservoir.

[0074] Wherein, the process of determining the weight value corresponding to each characteristic parameter can be as follows:

[0075] The exploitation amount of L exploited shallow gas reservoirs and the parameter values of the M characteristic parameters corresponding to each exploited shallow gas reservoir are obtained. The correlation between each characteristic parameter and the exploitation amount is determined based on the exploitation amount of the L exploited shallow gas reservoirs and the parameter values of the M characteristic parameters corresponding to each exploited shallow gas reservoir. The weight value corresponding to each characteristic parameter is determined based on the correlation between each characteristic parameter and the exploitation amount, wherein L is a positive integer.

[0076] In implementation, the exploitation amount of multiple exploited shallow gas reservoirs can be obtained according to the existing geological, logging and production dynamic data, etc. and the exploitation amount of each shallow gas reservoir. Then the relationship between each characteristic parameter and the exploitation amount is determined according to the multiple exploitation amounts and the parameter values of the corresponding characteristic parameters, that is, the fitting function (one order function) of each characteristic parameter and the exploitation amount is determined. Then the correlation between each characteristic parameter and the exploitation amount is determined according to the corresponding fitting function. As shown in Figures 1-9 Figure 1 is the relationship diagram of cumulative gas production (exploitation amount) and lithology, Figure 2 is the relationship diagram of cumulative gas production and shale content, Figure 3 is the relationship diagram of cumulative gas production and porosity, Figure 4 is the relationship diagram of cumulative gas production and permeability, Figure 5 is the relationship diagram of cumulative gas production and resistivity, Figure 6 is the relationship diagram of cumulative gas production and acoustic time difference, Figure 7 is the relationship diagram of cumulative gas production and neutron gamma relative value, Figure 8 is the relationship diagram of cumulative gas production and gas saturation,​Figure 9 is a relationship diagram of cumulative gas production and gas layer thickness. In each of the above relationship diagrams, a first-order equation of each characteristic parameter corresponding to the production is also included, R 2 is a correlation degree determined according to the relationship between the characteristic parameter and the production. Then, R (i.e., the square root of the correlation degree) can be determined as the weight value corresponding to the characteristic parameter. It should be noted that the corresponding characteristic parameter and the production can be determined to be positively correlated or negatively correlated according to the fitting function of the characteristic parameter and the production. If they are positively correlated, the corresponding R should be a positive value. If they are negatively correlated, the corresponding R should be a negative value.

[0077] Optionally, for each shallow gas reservoir, before the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir are weighted and summed with the weight values corresponding to each characteristic parameter, the parameter values of the M characteristic parameters corresponding to each shallow gas reservoir can also be normalized.

[0078] In which, the lithology corresponding to the shallow gas reservoir can be set to different values according to the difference of the lithology, for example, fine sandstone is set to 1, and argillaceous fine sandstone is set to 0.85. The normalization processing of the multiple parameter values corresponding to each characteristic parameter other than the lithology can be as follows:

[0079]

[0080] In which, Xmaxk’ is the maximum parameter value corresponding to the kth characteristic parameter, Xik’ is the kth parameter value of the ith to-be-evaluated gas layer (shallow gas reservoir) in the N to-be-determined shallow gas reservoirs. Xik is the normalized kth parameter value of the ith to-be-evaluated gas layer, the value is between 0 and 1. The parameter vector of the normalized ith to-be-evaluated gas layer is Xi=[Xi1,Xi2,…,Xik,…,Xim]. If the weight vector corresponding to each characteristic parameter is ζ=[ζ1,ζ2,…,ζk,…,ζm], then the first production characteristic value corresponding to each shallow gas reservoir is Wi=ζ1·Xi1+ζ2·Xi2+…+ζk·Xik+…ζm·Xim.

[0081] Step 1004, weighted summing of the M optimal parameter values corresponding to each characteristic parameter and the weight values corresponding to each characteristic parameter to obtain a second production characteristic value.

[0082] In implementation, the optimal parameter values corresponding to each characteristic parameter and the weight values corresponding to each characteristic parameter can be weighted and summed to obtain the second production characteristic value.

[0083] Wherein, before the weighted sum is performed, the optimal parameter value corresponding to each characteristic parameter can be normalized according to the processing of step 1003, and then the normalized optimal parameter value is weighted summed with the weight value corresponding to each characteristic parameter to obtain the second exploitation feature value. For example, the normalized ideal target parameter sequence Xp = [Xp1, Xp2, …, Xpk, …, Xpm]. If the weight value corresponding to each characteristic parameter forms a vector ζ = [ζ1, ζ2, …, ζk, …, ζm], then the second exploitation feature value Wp corresponding to each shallow gas reservoir is ζ1·Xp1+ ζ2·Xp2+ … + ζk·Xpk+ … + ζm·Xpm.

[0084] Step 1005, determining the exploitable target shallow gas reservoir in the N shallow gas reservoirs based on the second exploitation feature value and the first exploitation feature value corresponding to each shallow gas reservoir.

[0085] In implementation, after the second exploitation feature value is obtained, the corresponding target exploitation feature value can be determined according to the preset proportion coefficient. The shallow gas reservoir corresponding to the first exploitation feature value greater than or equal to the target exploitation feature value can be determined as the exploitable shallow gas reservoir. Wherein the preset proportion coefficient can be set by the technician in advance, which is not limited here. In addition, the technician can also set multiple proportion coefficients to grade the shallow gas reservoir corresponding to the first exploitation feature value, etc. Through statistics, the average cumulative gas production of the shallow gas reservoir corresponding to the first exploitation feature value higher than 65% of the second exploitation feature value can reach 500 × 10 4 m 3 , the average cumulative gas production of the shallow gas reservoir corresponding to the first exploitation feature value higher than 55% of the second exploitation feature value can reach 200 × 10 4 m 3 , and the average cumulative gas production of the shallow gas reservoir corresponding to the first exploitation feature value higher than 50% of the second exploitation feature value can reach 100 × 10 4 m 3 . Therefore, 65%, 55%, and 50% can be taken as the proportion coefficients corresponding to the A-level reference standard, the B-level reference standard, and the C-level reference standard, respectively. That is, the shallow gas reservoir corresponding to the first exploitation feature value higher than 65% of the second exploitation feature value can be determined as the A-level shallow gas reservoir, the shallow gas reservoir corresponding to the first exploitation feature value higher than 55% and lower than 65% of the second exploitation feature value can be determined as the B-level shallow gas reservoir, and the shallow gas reservoir corresponding to the first exploitation feature value higher than 50% and lower than 55% of the second exploitation feature value can be determined as the C-level shallow gas reservoir.

[0086] The embodiment of the present application can obtain the parameter values corresponding to the characteristic parameters of the plurality of shallow gas reservoirs, determine the first mining characteristic value in each shallow gas reservoir according to the parameter values corresponding to each shallow gas reservoir, and determine the second mining characteristic value according to the optimal parameter values of the characteristic parameters, so that the suitable shallow gas reservoir for mining can be determined in the plurality of shallow gas reservoirs according to the first mining characteristic value and the second mining characteristic value. It can be seen that the present application does not need to make artificial judgment on each shallow gas reservoir, and the efficiency of determining whether the shallow gas reservoir can be mined can be improved.

[0087] All the optional technical solutions described above can be combined to form optional embodiments of the present disclosure, which will not be described here.

[0088] Figure 11 The device for determining the mineable shallow gas reservoir provided by the embodiment of the present application can be a terminal in the above-mentioned embodiments, and the device comprises:

[0089] The acquisition module 1110 is configured to obtain the parameter values of the M characteristic parameters of the N shallow gas reservoirs measured in advance, wherein N and M are positive integers;

[0090] The first determination module 1120 is configured to determine the optimal parameter value in the corresponding N parameter values for each characteristic parameter, and obtain the optimal parameter values corresponding to the M characteristic parameters respectively.

[0091] The calculation module 1130 is configured to, for each shallow gas reservoir, perform weighted summation on the parameter values of the M characteristic parameters corresponding to the shallow gas reservoir and the weight values corresponding to each characteristic parameter, to obtain the first mining characteristic value corresponding to each shallow gas reservoir; and perform weighted summation on the optimal parameter values corresponding to the M characteristic parameters and the weight values corresponding to each characteristic parameter, to obtain the second mining characteristic value.

[0092] The first determination module 1120 is further configured to determine the target shallow gas reservoir that can be mined in the N shallow gas reservoirs based on the second mining characteristic value and the first mining characteristic value corresponding to each shallow gas reservoir.

[0093] Optionally, the M characteristic parameters include the lithology, shale content, porosity, permeability, resistivity, acoustic time difference, neutron gamma relative value, gas saturation, and gas layer thickness of the shallow gas reservoir.

[0094] Optionally, the first determination module 1120 is configured to, for any one of the lithology, porosity, resistivity, acoustic time difference, neutron gamma relative value, gas saturation, and gas layer thickness of the shallow gas reservoir, determine the maximum parameter value corresponding to the characteristic parameter as the optimal parameter value corresponding to the characteristic parameter.

[0095] For any characteristic parameter of the shale content and the permeability of the shallow gas reservoir, the minimum parameter value corresponding to the characteristic parameter is determined as the optimal parameter value corresponding to the characteristic parameter.

[0096] Optionally, the apparatus further includes a processing module configured to:

[0097] normalize the parameter values of the M characteristic parameters corresponding to each shallow gas reservoir.

[0098] Optionally, the apparatus further includes a second determining module configured to:

[0099] obtain the production amount of L mined shallow gas reservoirs, and the parameter values of the M characteristic parameters corresponding to each mined shallow gas reservoir;

[0100] determine the correlation degree between each characteristic parameter and the production amount based on the production amount of the L mined shallow gas reservoirs, and the parameter values of the M characteristic parameters corresponding to each mined shallow gas reservoir;

[0101] determine the weight value corresponding to each characteristic parameter based on the correlation degree between the characteristic parameter and the production amount.

[0102] Optionally, the first determining module 1120 is configured to:

[0103] for each shallow gas reservoir, determine the ratio of the corresponding first production characteristic value to the second production characteristic value;

[0104] if the ratio is not lower than a preset ratio, determine the shallow gas reservoir as a mineable target shallow gas reservoir.

[0105] It should be noted that: the apparatus for determining a mineable shallow gas reservoir provided in the above embodiments only uses the division of the above functional modules as an example for illustration, and in actual application, the above functions can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus for determining a mineable shallow gas reservoir and the method for determining a mineable shallow gas reservoir provided in the above embodiments belong to the same concept, and the specific implementation process is detailed in the method embodiments, which will not be repeated here.

[0106] Figure 12A structural block diagram of an electronic device 1200 is shown. The electronic device 1200 can be a terminal in the above-described embodiments, and can be a portable mobile terminal such as a smartphone, a tablet computer, an MP3 player, an MP4 player, a notebook computer, or a desktop computer. The electronic device 1200 can also be referred to as a user device, a portable terminal, a laptop terminal, a desktop terminal, or other names.

[0107] Generally, the electronic device 1200 includes a processor 1201 and a memory 1202.

[0108] The processor 1201 can include one or more processing cores, such as a 4-core processor, an 8-core processor, or the like. The processor 1201 can be implemented in at least one of a hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), a PLA (Programmable Logic Array). The processor 1201 can also include a main processor and a coprocessor. The main processor is a processor for processing data in an awake state, also referred to as a CPU (Central Processing Unit). The coprocessor is a low-power processor for processing data in a standby state. In some embodiments, the processor 1201 can be integrated with a GPU (Graphics Processing Unit) for rendering and drawing content to be displayed on a display screen. In some embodiments, the processor 1201 can further include an AI (Artificial Intelligence) processor for processing machine learning-related computing operations.

[0109] The memory 1202 can include one or more computer-readable storage media. The memory 1202 can also include high-speed random access memory and non-volatile, computer-readable storage media such as one or more magnetic disk storage devices, optical storage devices, or flash storage devices. In some embodiments, the non-transitory computer-readable storage media of the memory 1202 is used to store at least one instruction for execution by the processor 1201 to implement the method of determining a producible shallow gas reservoir provided by the method embodiments of the present application.

[0110] In an exemplary embodiment, a computer-readable storage medium, such as a memory including instructions executable by a processor in a terminal to perform the method of determining a producible shallow gas reservoir in the above-described embodiments, is also provided. The computer-readable storage medium can be non-transitory. For example, the computer-readable storage medium can be a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0111] Those of ordinary skill in the art can understand that all or part of the steps of the above-described embodiments can be completed by hardware, or by a program instructing relevant hardware, and the program can be stored in a computer-readable storage medium, such as a ROM, a magnetic disk, or an optical disk.

[0112] The above description is merely preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for identifying exploitable shallow gas reservoirs, characterized in that, The method includes: Obtain the parameter values ​​of M pre-measured characteristic parameters corresponding to N shallow gas reservoirs, where N and M are positive integers; For each characteristic parameter, the optimal parameter value is determined from the corresponding N parameter values ​​to obtain the optimal parameter values ​​corresponding to the M characteristic parameters respectively; Obtain the production volume of L exploited shallow gas reservoirs, and the parameter values ​​of M characteristic parameters corresponding to each exploited shallow gas reservoir; Based on the production volume of the L exploited shallow gas reservoirs and the parameter values ​​of the M characteristic parameters corresponding to each exploited shallow gas reservoir, the correlation between each characteristic parameter and the production volume is determined. The weight value corresponding to each characteristic parameter is determined based on the correlation between each characteristic parameter and the mining volume. For each shallow gas reservoir, the first exploitation characteristic value corresponding to each shallow gas reservoir is obtained by weighted summation based on the parameter values ​​of the M characteristic parameters corresponding to the shallow gas reservoir and the weight values ​​corresponding to each characteristic parameter. The second mining characteristic value is obtained by weighted summing the optimal parameter values ​​corresponding to the M characteristic parameters and the weight values ​​corresponding to each characteristic parameter. Shallow gas reservoirs corresponding to the first extraction characteristic value exceeding 65% of the second extraction characteristic value are defined as first-level shallow gas reservoirs; shallow gas reservoirs corresponding to the first extraction characteristic value exceeding 55% but less than 65% of the second extraction characteristic value are defined as second-level shallow gas reservoirs; and shallow gas reservoirs corresponding to the first extraction characteristic value exceeding 50% but less than 55% of the second extraction characteristic value are defined as third-level shallow gas reservoirs.

2. The method according to claim 1, characterized in that, The M characteristic parameters include: lithology, clay content, porosity, permeability, resistivity, sonic transit time, relative neutron gamma, gas saturation, and gas layer thickness of the shallow gas reservoir.

3. The method according to claim 2, characterized in that, For each characteristic parameter, the optimal parameter value is determined from the corresponding N parameter values, including: For any one of the characteristic parameters of the shallow gas reservoir, such as lithology, porosity, resistivity, sonic transit time, relative neutron gamma, gas saturation, and gas layer thickness, the largest parameter value corresponding to the characteristic parameter shall be determined as the optimal parameter value corresponding to the characteristic parameter. For any characteristic parameter among the clay content and permeability of the shallow gas reservoir, the smallest parameter value corresponding to the characteristic parameter is determined as the optimal parameter value corresponding to the characteristic parameter.

4. The method according to claim 1, characterized in that, Before performing a weighted summation of the parameter values ​​of the M characteristic parameters corresponding to each shallow gas reservoir and the weight value corresponding to each characteristic parameter for each shallow gas reservoir, the method further includes: The parameter values ​​of the M characteristic parameters corresponding to each shallow gas reservoir are normalized.

5. An apparatus for identifying exploitable shallow gas reservoirs, characterized in that, The device includes: The acquisition module is used to acquire the parameter values ​​of M pre-measured characteristic parameters corresponding to N shallow gas reservoirs, where N and M are positive integers; The first determining module is used to determine the optimal parameter value among the corresponding N parameter values ​​for each characteristic parameter, thereby obtaining the optimal parameter values ​​corresponding to the M characteristic parameters respectively; The calculation module is used to obtain the production volume of L exploited shallow gas reservoirs and the parameter values ​​of M characteristic parameters corresponding to each exploited shallow gas reservoir; based on the production volume of the L exploited shallow gas reservoirs and the parameter values ​​of the M characteristic parameters corresponding to each exploited shallow gas reservoir, the correlation between each characteristic parameter and the production volume is determined; based on the correlation between each characteristic parameter and the production volume, the weight value corresponding to each characteristic parameter is determined; for each shallow gas reservoir, the first exploitation characteristic value corresponding to each shallow gas reservoir is obtained by weighted summation of the parameter values ​​of the M characteristic parameters and the weight values ​​corresponding to each characteristic parameter; and the second exploitation characteristic value is obtained by weighted summation of the optimal parameter values ​​corresponding to the M characteristic parameters and the weight values ​​corresponding to each characteristic parameter. The first determining module is further configured to determine shallow gas reservoirs corresponding to the first mining characteristic value that exceed 65% of the second mining characteristic value as first-level shallow gas reservoirs, shallow gas reservoirs corresponding to the first mining characteristic value that exceed 55% but are less than 65% of the second mining characteristic value as second-level shallow gas reservoirs, and shallow gas reservoirs corresponding to the first mining characteristic value that exceed 50% but are less than 55% of the second mining characteristic value as third-level shallow gas reservoirs.

6. The apparatus according to claim 5, characterized in that, The first determining module is used for: For each shallow gas reservoir, determine the ratio of the corresponding first exploitation characteristic value to the second exploitation characteristic value; If the ratio is not lower than a preset ratio, the shallow gas reservoir is identified as a exploitable target shallow gas reservoir.

7. A computer device, characterized in that, The computer device includes a processor and a memory, the memory storing at least one instruction, which is loaded and executed by the processor to perform the operations performed by the method for determining exploitable shallow gas reservoirs as described in any one of claims 1 to 4.

8. A computer-readable storage medium, characterized in that, The storage medium stores at least one instruction, which is loaded and executed by a processor to perform the operations of the method for determining exploitable shallow gas reservoirs as described in any one of claims 1 to 4.

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