Site selection method, device and equipment for gas storage

Abstract

The invention relates to the technical field of natural gas resource exploration and development, and discloses a gas storage site selection method, device and equipment, and the method comprises the steps: obtaining the geological data of a target region, determining the combination type of an oil and gas reservoir, and determining the position and storage capacity scale of a gas storage through the geological data and the combination type. By determining the type of the oil and gas reservoir and the development state of the oil and gas reservoir, the oil and gas reservoir is re-divided by using the combination type, structural interpretation is performed on the target area based on the result after division in combination with geological data, and the target area is analyzed to determine the position of the gas storage. And the storage capacity scale of the gas storage is determined in combination with the structural interpretation and combination type of the target area, so that site selection of the gas storage is completed, consideration of comprehensive information in multiple aspects is avoided, site selection of the gas storage is determined by utilizing further division of the oil and gas reservoir and an analysis result of the target area, and the site selection efficiency of the gas storage is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of natural gas resource exploration and development, and particularly relates to a method, device, and equipment for selecting a site for a gas storage reservoir. Background Art

[0002] As a clean energy source, natural gas has been widely used in the civilian and many industrial fields due to its economy and environmental protection. The development of underground gas storage reservoirs enables the effective implementation of natural gas peak shaving. At the same time, the operation of underground gas storage reservoirs has high risks. Underground gas storage reservoirs operate under ultra-high pressure. Ensuring the long-term operation of the gas storage reservoir, optimizing the reservoir construction target and site, reducing the operation cost of the gas storage reservoir, and improving the utilization rate of the gas storage reservoir are important issues before the construction of the reservoir.

[0003] In the related art, the site selection evaluation of gas storage reservoirs is mainly considered according to multiple aspects of elements, such as complete structural form, reservoir physical properties with low porosity and medium permeability or above, strong fault sealing, old wells can be plugged, ground can be implemented, and the formation does not contain toxic and harmful gases, etc. In these evaluation elements, the site selection evaluation method and standard of gas storage reservoirs are comprehensively formulated by considering multi-faceted information such as ground, process, technology, safety, environmental protection, and economy. However, with the importance of gas storage reservoir construction, the existing scale of gas storage reservoirs can no longer meet the demand. Therefore, it is urgent to improve the site selection efficiency of gas storage reservoirs. Summary of the Invention

[0004] In view of this, the present invention provides a method, device, and equipment for selecting a site for a gas storage reservoir to solve the technical problem of low site selection efficiency of gas storage reservoirs.

[0005] In a first aspect, the present invention provides a method for selecting a site for a gas storage reservoir, including: obtaining geological data of a target area; determining the type of oil and gas reservoir and the development status of the oil and gas reservoir based on the geological data; determining the combination type based on the type of oil and gas reservoir and the development status of the oil and gas reservoir; determining the location of the gas storage reservoir based on the geological data and the combination type; determining the storage capacity scale of the gas storage reservoir corresponding to the combination type based on the geological data.

[0006] Combined with the first aspect, in a possible implementation manner of the first aspect, the types of oil and gas reservoirs include: aquifer type, composite gas reservoir-aquifer type, composite oil reservoir-aquifer type, and the development status of the oil and gas reservoir includes: newly discovered oil reservoir and mid- to late-stage oil reservoir. Determining the combination type based on the type of oil and gas reservoir and the development status of the oil and gas reservoir includes: W type, AGW type, AOW type, BGW type, BOW type.

[0007] Combined with the first aspect, in a possible implementation manner of the first aspect, the combination type is W type, and the geological data includes: fault information, uplift area information, and depression information. Based on the geological data and the combination type, determining the location of the gas storage reservoir includes: obtaining seismic data and actual well drilling data of the target area; based on the seismic data, conducting fine structural interpretation of the target area, and combining the actual well drilling data to determine the trap information of the target area; based on the trap information, analyzing the target area to determine the location of the gas storage reservoir.

[0008] Combined with the first aspect, in a possible implementation manner of the first aspect, the geological data includes: the original formation pressure of the aquifer and the upper limit pressure of the gas storage reservoir operation. Based on the geological data, determining the storage capacity scale of the gas storage reservoir corresponding to the combination type includes: based on the trap information, determining the range of the first pressurization coefficient; based on the original formation pressure of the aquifer and the upper limit pressure of the gas storage reservoir operation, and through the range for constraint, determining the first pressurization coefficient; based on the first pressurization coefficient, determining the storage capacity scale of the gas storage reservoir.

[0009] Combined with the first aspect, in a possible implementation manner of the first aspect, the range of the first pressurization coefficient is represented by the following formula:

[0010] γ ≤ (H t / H0) + 1

[0011] where γ represents the first pressurization coefficient, H t represents the trap closure amplitude, and H0 represents the burial depth of the structural high point.

[0012] Combined with the first aspect, in a possible implementation manner of the first aspect, the storage capacity scale of the gas storage reservoir is represented by the following formula:

[0013] Q m / Q c = γ - 1

[0014] Q = Q m + Q c

[0015] where Q represents the storage capacity scale of the gas storage reservoir, γ represents the pressurization coefficient, Q m represents the maximum working gas volume, and Q c represents the maximum cushion gas volume.

[0016] Combined with the first aspect, in a possible implementation manner of the first aspect, the combination type is AGW type, AOW type, BGW type, or BOW type. Based on the geological data and the combination type, determining the location of the gas storage reservoir includes: based on the geological data, injecting gas at the top and producing oil at the bottom of the first oil reservoir or the first gas reservoir to obtain the second oil reservoir or the second gas reservoir; taking the location of the second oil reservoir or the second gas reservoir as the location of the gas storage reservoir.

[0017] In combination with the first aspect, in a possible implementation of the first aspect, the geological data includes: the first formation pressure and the second formation pressure. Based on the geological data, determining the storage capacity scale of the gas storage reservoir corresponding to the combination type includes: determining the second pressurization coefficient based on the first formation pressure and the second formation pressure; and determining the storage capacity scale of the gas storage reservoir through the material balance equation based on the second pressurization coefficient.

[0018] In the second aspect, the present invention provides a site selection device for a gas storage reservoir. The device includes: an acquisition module for acquiring geological data of a target area; a determination module for determining the type of oil and gas reservoir and the development status of the oil and gas reservoir based on the geological data; a type module for determining the combination type based on the type of oil and gas reservoir and the development status of the oil and gas reservoir; a location module for determining the location of the gas storage reservoir based on the geological data and the combination type; and a storage capacity scale module for determining the storage capacity scale of the gas storage reservoir corresponding to the combination type based on the geological data.

[0019] In the third aspect, the present invention provides a computer device, including: a memory and a processor, which are communicatively connected to each other. The memory stores computer instructions, and the processor executes the computer instructions to execute the site selection method for the gas storage reservoir according to the first aspect or any corresponding implementation manner thereof.

[0020] The technical solution of the present invention has the following advantages:

[0021] A site selection method, device, and equipment for a gas storage reservoir provided by the present invention. The method acquires geological data of a target area, determines the combination type of the oil and gas reservoir, and determines the location and storage capacity scale of the gas storage reservoir through the geological data and the combination type. In this process, by determining the type of oil and gas reservoir and the development status of the oil and gas reservoir, the combination type is used to re-divide the oil and gas reservoir, and based on the result of the division, combined with the geological data, structural interpretation of the target area is carried out to analyze the target area to determine the location of the gas storage reservoir. And by combining the structural interpretation of the target area and the combination type, the storage capacity scale of the gas storage reservoir is determined, thereby completing the site selection of the gas storage reservoir, avoiding the consideration of comprehensive information in multiple aspects, and using the further division of the oil and gas reservoir and the analysis result of the target area to determine the site selection of the gas storage reservoir, improving the site selection efficiency of the gas storage reservoir. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1It is a schematic flow chart of a method for selecting a site for a gas storage reservoir provided by an embodiment of the present invention;

[0024] Figure 2 It is a schematic diagram of trap information of a target area provided by an embodiment of the present invention;

[0025] Figure 3 It is a schematic plan view of a target area provided by an embodiment of the present invention;

[0026] Figure 4 It is a schematic cross-sectional view of a target area provided by an embodiment of the present invention;

[0027] Figure 5 It is a structural block diagram of a device for selecting a site for a gas storage reservoir provided by an embodiment of the present invention;

[0028] Figure 6 It is a schematic hardware structure diagram of a computer device according to an embodiment of the present invention. Detailed implementation manners

[0029] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] According to an embodiment of the present invention, an embodiment of a method for selecting a site for a gas storage reservoir is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0031] An embodiment of the present invention provides a method for selecting a site for a gas storage reservoir, as Figure 1 shown, including the following steps:

[0032] S101. Obtain geological data of the target area.

[0033] Specifically, the geological data of the target area includes block seismic data and actual well drilling data of the target area.

[0034] S102. Based on the geological data, determine the type of oil and gas reservoir and the development status of the oil and gas reservoir.

[0035] Specifically, the types of oil and gas reservoirs include: aquifer type, composite gas reservoir - aquifer type, and composite oil reservoir - aquifer type. The development status of the oil and gas reservoirs includes: newly discovered reservoirs and mid - to - late - stage reservoirs. Specifically, the aquifer type is denoted as W type, the composite gas reservoir - aquifer type is denoted as GW type, the composite oil reservoir - aquifer type is denoted as OW type, the newly discovered reservoir is denoted as B, and the mid - to - late - stage reservoir is denoted as A.

[0036] S103. Determine the combined type based on the type of oil and gas reservoir and the development status of the oil and gas reservoir.

[0037] Specifically, the combined types include: W type, AGW type, AOW type, BGW type, and BOW type. Among them, the W type is used to represent the aquifer type, the AGW type is used to represent the composite gas reservoir - aquifer type in the mid - to - late - stage state, the AOW type is used to represent the composite oil reservoir - aquifer type in the mid - to - late - stage state, the BGW type is used to represent the composite gas reservoir - aquifer type in the newly discovered state, and the BOW is used to represent the composite oil reservoir - aquifer type in the newly discovered state.

[0038] S104. Determine the location of the gas storage reservoir based on the geological data and the combined type.

[0039] Specifically, determining the location of the gas storage reservoir based on the geological data and the combined type means that according to the different combined types, the location of the gas storage reservoir is determined in different ways. For example, by analyzing the target area through the way of determining the trap information of the target area from the geological data to determine the location of the gas storage reservoir; or using the location of the oil and gas reservoir as the location of the gas storage reservoir.

[0040] S105. Determine the storage capacity scale of the gas storage reservoir corresponding to the combined type based on the geological data.

[0041] Specifically, determining the storage capacity scale of the gas storage reservoir corresponding to the combined type based on the geological data means determining the pressurization coefficient corresponding to the combined type through the geological data, and thus determining the storage capacity scale of the gas storage reservoir through the determined pressurization coefficient.

[0042] A method for selecting the location of a gas storage reservoir provided by an embodiment of the present invention. This method obtains the geological data of the target area, determines the combined type of the oil and gas reservoir, and determines the location and storage capacity scale of the gas storage reservoir through the geological data and the combined type. In this process, by determining the type of the oil and gas reservoir and the development status of the oil and gas reservoir, the oil and gas reservoirs are re - divided using the combined type, and the target area is structurally interpreted based on the results of the division combined with the geological data, and the location of the gas storage reservoir is analyzed and determined in the target area. And by combining the structural interpretation of the target area and the combined type, the storage capacity scale of the gas storage reservoir is determined, thus completing the location selection of the gas storage reservoir, avoiding the consideration of comprehensive information in multiple aspects, and using the further division of the oil and gas reservoir and the analysis results of the target area to determine the location selection of the gas storage reservoir, improving the location selection efficiency of the gas storage reservoir.

[0043] In an alternative embodiment, for the siting of an aquifer-type gas storage reservoir, the geological data includes: fault information, uplift area information, and depression information. Based on the geological data and the combination type, the location of the gas storage reservoir is determined, including:

[0044] Obtain seismic data and actual well drilling data of the target area.

[0045] Based on the seismic data, conduct a detailed structural interpretation of the target area, and combine with the actual well drilling data to determine the trap information of the target area. Specifically, based on the seismic data, conducting a detailed structural interpretation of the target area and combining with the actual well drilling data to determine the trap information of the target area means that through the structural interpretation of the target area and combining with the actual well drilling data to create a structural map, obtaining a schematic diagram of the trap information of the target area, and determining the structural high position, that is, the trap information of the target area. As Figure 2 shown, an exemplary display of the trap information of the target area, there are trap ① and trap ② in the figure. Among them, the schematic diagram of the trap information of the target area includes: fault information, uplift area information, and depression information. The fault information includes: normal fault / reverse fault, fault strike, and fault throw. The uplift area information includes: formation development, sedimentary facies characteristics, and lithological characteristics. The depression information includes: formation development, sedimentary facies characteristics, and lithological characteristics.

[0046] Based on the trap information, analyze the target area to determine the location of the gas storage reservoir.

[0047] Specifically, the trap information includes: trap high point burial depth, trap closure amplitude, and trap area. Based on the trap information, analyzing the target area to determine the location of the gas storage reservoir means that through the trap high point burial depth, trap closure amplitude, and trap area, using the preset trap high point burial depth threshold, preset trap closure amplitude threshold, and preset trap area threshold of the gas storage reservoir, screen the traps in the target area to determine the location of the gas storage reservoir.

[0048] Specifically, taking the Figure 2 shown trap as an example, trap ① has multiple complete traps that are not affected by uplifts, faults, and depressions compared to trap ②. If the trap high point burial depth, trap closure amplitude, and trap area of trap ① respectively meet the corresponding thresholds, then the corresponding position of trap ① is the location of the gas storage reservoir. It should be understood that the preset trap high point burial depth threshold, preset trap closure amplitude threshold, and preset trap area threshold can be set according to the actual working conditions, and this embodiment does not make specific limitations on this. Usually, the preset trap high point burial depth threshold is taken as 1000 to 3000 meters.

[0049] In an alternative embodiment, the geological data includes: original formation pressure of the aquifer and upper limit pressure of the gas storage reservoir operation. Based on the geological data, determine the storage capacity scale of the gas storage reservoir corresponding to the combination type, including:

[0050] Based on the trap information, determine the range of the first pressurization coefficient.

[0051] In an alternative implementation, the range of the first pressurization coefficient is represented by formula (1):

[0052] γ ≤ (H t / H0) + 1 (1)

[0053] where γ represents the first pressurization coefficient, H t represents the trap closure amplitude, and H0 represents the burial depth of the structural high point.

[0054] Specifically, both H t and H0 belong to the trap information, corresponding to the trap closure amplitude and the burial depth of the trap high point respectively. The determination method of the trap information will not be elaborated here. For the convenience of understanding the trap information and the pressurization coefficient, the embodiments exemplarily show Figure 3 , Figure 4 , where H represents the maximum gas-bearing height under the allowable pressure, and h represents the height corresponding to the maximum working gas.

[0055] Based on the original formation pressure of the aquifer and the upper limit pressure of the gas storage operation, determine the first pressurization coefficient by means of range constraint.

[0056] Specifically, the first pressurization coefficient is represented by formula (2):

[0057] γ = p max / p0, and γ ≤ (H t / H0) + 1 (2)

[0058] where p max represents the upper limit pressure of the gas storage operation, and p0 represents the original formation pressure of the aquifer.

[0059] Specifically, the maximum gas-bearing height under the allowable pressure and the height corresponding to the maximum working gas are represented by formulas (3) and (4) respectively:

[0060] H = H0 * (γ - 1) (3)

[0061] h = H / 2 (4)

[0062] Based on the first pressurization coefficient, determine the storage capacity scale of the gas storage.

[0063] In an alternative implementation, the storage capacity scale of the gas storage is represented by formulas (5) and (6):

[0064] Q m / Q c = γ - 1 (5)

[0065] Q = Q m + Qc (6)

[0066] Among them, Q represents the storage capacity scale of the gas storage reservoir, γ represents the pressurization coefficient, Q m represents the maximum working gas volume, Q c represents the maximum cushion gas volume.

[0067] By implementing this embodiment, when constructing an aquifer-type gas storage reservoir, through seismic data, fine structural interpretation of the target area is carried out, combined with the actual drilled well data, the trap information of the target area is determined, and the location of the gas storage reservoir is determined. And by using the trap information, the range of the first pressurization coefficient is determined, so as to calculate the first pressurization coefficient through the original formation pressure of the aquifer and the upper limit pressure of the gas storage reservoir operation, and constrain the calculation with the determined range. Thus, the storage capacity scale of the gas storage reservoir is determined through the determined first pressurization coefficient, so that the determined location and storage capacity scale of the gas storage reservoir provide a basis for the site selection of the aquifer-type gas storage reservoir, and the efficiency of gas storage reservoir selection is improved.

[0068] In an alternative embodiment, for determining the site selection of gas storage reservoirs of composite gas reservoir-aquifer type in the middle and late stages, composite oil reservoir-aquifer type in the middle and late stages, composite gas reservoir-aquifer type in the newly discovered state, and composite oil reservoir-aquifer type in the newly discovered state, based on geological data and combination types, the location of the gas storage reservoir is determined, including:

[0069] Based on geological data, gas is injected at the top and oil is produced at the bottom of the first oil reservoir or the first gas reservoir to obtain a second oil reservoir or a second gas reservoir.

[0070] Specifically, injecting gas at the top and producing oil at the bottom of the first oil reservoir or the first gas reservoir based on geological data to obtain a second oil reservoir or a second gas reservoir means determining the geological information of the first gas reservoir or the first oil reservoir through geological data, and injecting gas at the top and producing oil at the bottom of the first gas reservoir or the first oil reservoir until the gas reservoir or the oil reservoir is depleted, forming a second gas reservoir or a second oil reservoir.

[0071] Take the location of the second oil reservoir or the second gas reservoir as the location of the gas storage reservoir.

[0072] Specifically, the location of the second reservoir or the second gas reservoir is used as the location of the gas storage reservoir. Among them, for the composite gas reservoir-aquifer type and the composite oil reservoir-aquifer type in the newly discovered state, namely the BOW type and the BGW type, since the corresponding gas reservoirs and oil reservoirs of this type are in the newly discovered state and cannot be depleted in a short time, the BOW type and the BGW type are used as reserve gas storage reservoirs; while for the composite gas reservoir-aquifer type and the composite oil reservoir-aquifer type in the middle and late stages, namely the AOW type and the AGW type, since the corresponding gas reservoirs and oil reservoirs are in the middle and late stages and the depleted formation pressure can be determined, after the corresponding gas reservoirs and oil reservoirs of the AOW type and the AGW type complete top injection and bottom oil production, the locations of the corresponding gas reservoirs and oil reservoirs can be used as the locations of the gas storage reservoir for the construction preparation of the gas storage reservoir.

[0073] In an alternative embodiment, the geological data includes: the first formation pressure and the second formation pressure. Based on the geological data, the storage capacity scale of the gas storage reservoir corresponding to the combination type is determined, including:

[0074] Based on the first formation pressure and the second formation pressure, the second pressurization coefficient is determined.

[0075] Specifically, when the combination type is the AOW type and the AGW type, the first formation pressure refers to the original formation pressure, and the second formation pressure refers to the depleted formation pressure. The second pressurization coefficient is represented by formula (7):

[0076] γ` = ((p1 - p2) / p1) + 1 (7)

[0077] Where γ` represents the second pressurization coefficient, p1 represents the original formation pressure, and p2 represents the depleted formation pressure.

[0078] Specifically, when the combination type is the BOW type and the BGW type, the first formation pressure refers to the original formation pressure, and the second formation pressure refers to the intermediate state formation pressure, where the intermediate state formation pressure is used to represent the depleted formation pressure that has not reached the depleted state. Since the corresponding gas reservoirs and oil reservoirs of the BOW type and the BGW type are in the newly discovered state and cannot be depleted in a short time, that is, the depleted formation pressure cannot be obtained, and the corresponding formation pressure belongs to the intermediate state that has not reached the depleted state. The acquisition method of the intermediate state formation pressure is the same as that of the depleted formation pressure, that is, the second pressurization coefficient of the BOW type and the BGW type is estimated through the depleted bottom pressure. The second pressurization coefficient is represented by formula (8):

[0079] γ` = ((p1 - p3) / p1) + 1 (8)

[0080] Where γ` represents the second pressurization coefficient, p1 represents the original formation pressure, and p3 represents the intermediate state formation pressure.

[0081] Based on the second pressure boost coefficient, determine the storage capacity scale of the gas storage reservoir through the material balance equation.

[0082] Specifically, determining the storage capacity scale of the gas storage reservoir based on the second pressure boost coefficient through the material balance equation means substituting the determined second pressure boost coefficient into the material balance equation and determining the storage capacity scale of the gas storage reservoir through the material balance method.

[0083] By implementing this embodiment, when constructing a composite gas reservoir - aquifer type and a composite oil reservoir - aquifer type gas storage reservoir, through the method of injecting gas at the top and producing oil at the bottom of the original gas reservoir and oil reservoir, a gas storage reservoir is constructed at the position of the original gas reservoir and oil reservoir, and the second pressure boost coefficient is calculated through the original formation pressure and the depleted formation pressure. Then, by substituting the determined second pressure boost coefficient into the material balance equation, the storage capacity scale of the gas storage reservoir is determined, providing a basis for the site selection of the composite gas reservoir - aquifer type in the middle and late stages, the composite oil reservoir - aquifer type in the middle and late stages, the newly discovered composite gas reservoir - aquifer type, and the newly discovered composite oil reservoir - aquifer type gas storage reservoir, and improving the efficiency of gas storage reservoir selection.

[0084] In this embodiment, a gas storage reservoir site selection device is also provided. This device is used to implement the above - mentioned embodiment and preferred implementation manners, and those that have been described will not be repeated. As used below, the term "module" can be a combination of software and / or hardware that can achieve a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware is also possible and contemplated.

[0085] This embodiment provides a gas storage reservoir site selection device, as Figure 5 shown, including:

[0086] An acquisition module 201, configured to acquire geological data of a target area. The specific process can refer to the relevant description of step S101 in the above - mentioned embodiment, and will not be repeated here.

[0087] A determination module 202, configured to determine the type of oil and gas reservoir and the development status of the oil and gas reservoir based on the geological data. The specific process can refer to the relevant description of step S102 in the above - mentioned embodiment, and will not be repeated here.

[0088] A type module 203, configured to determine the combination type based on the type of oil and gas reservoir and the development status of the oil and gas reservoir. The specific process can refer to the relevant description of step S103 in the above - mentioned embodiment, and will not be repeated here.

[0089] A location module 204, configured to determine the location of the gas storage reservoir based on the geological data and the combination type. The specific process can refer to the relevant description of step S104 in the above - mentioned embodiment, and will not be repeated here.

[0090] The storage capacity scale module 205 is configured to determine the storage capacity scale of the gas storage reservoir corresponding to the combination type based on geological data. For the specific process, reference may be made to the relevant description of step S105 in the foregoing embodiments, which will not be elaborated herein.

[0091] The gas storage reservoir site selection device in this embodiment is presented in the form of functional units. Here, the unit refers to an ASIC (Application Specific Integrated Circuit) circuit, a processor and a memory that execute one or more software or fixed programs, and / or other devices that can provide the above functions.

[0092] The embodiment of the present invention further provides a computer device having the above Figure 5 shown gas storage reservoir site selection device. Please refer to Figure 6 , Figure 6 which is a schematic structural diagram of a computer device provided by an optional embodiment of the present invention. As shown in Figure 6 , the computer device includes: one or more processors 10, a memory 20, and interfaces for connecting various components, including a high-speed interface and a low-speed interface. Each component communicates with each other using different buses and can be installed on a common main board or installed in other ways as needed. The processor can process instructions executed within the computer device, including instructions stored in the memory or on the memory to display graphical information of the GUI on an external input / output device (such as a display device coupled to the interface). In some optional embodiments, if necessary, multiple processors and / or multiple buses can be used together with multiple memories and multiple memories. Similarly, multiple computer devices can be connected, and each device provides some necessary operations (for example, as a server array, a set of blade servers, or a multi-processor system). Figure 6 In

[0093] which, one processor 10 is taken as an example.

[0094] The memory 20 stores instructions executable by at least one processor 10, so that the at least one processor 10 executes the method shown in the above embodiments.

[0095] The memory 20 may include a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the computer device and the like. In addition, the memory 20 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, a flash memory device, or other non-transitory solid-state storage devices. In some alternative embodiments, the memory 20 may optionally include a memory remotely provided relative to the processor 10, and these remote memories can be connected to the computer device through a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0096] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, a hard disk, or a solid-state drive; the memory 20 may further include a combination of the above types of memory. The computer device further includes a communication interface 30 for communicating the computer device with other devices or a communication network.

[0097] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A method for selecting a site for a gas storage reservoir, characterized in that, The method includes: Obtaining geological data of the target area; Based on the geological data, determining the type of oil and gas reservoir and the development status of the oil and gas reservoir; Based on the type of oil and gas reservoir and the development status of the oil and gas reservoir, determining the combination type; Based on the geological data and the combination type, determining the location of the gas storage reservoir; Based on the geological data, determining the storage capacity scale of the gas storage reservoir corresponding to the combination type.

2. The method according to claim 1, wherein The types of oil and gas reservoirs include: aquifer type, composite gas reservoir type - aquifer type, composite oil reservoir type - aquifer type, and the development status of the oil and gas reservoir includes: newly discovered oil reservoir and mid - to - late - stage oil reservoir, The determining the combination type based on the type of oil and gas reservoir and the development status of the oil and gas reservoir includes: W type, AGW type, AOW type, BGW type, BOW type.

3. The method according to claim 2, characterized in that When the combination type is the W type, determining the location of the gas storage reservoir based on the geological data and the combination type includes: Obtaining seismic data and actual well - drilled data of the target area; Based on the seismic data, performing fine structural interpretation on the target area, and combining with the actual well - drilled data, determining the trap information of the target area; Based on the trap information, analyzing the target area to determine the location of the gas storage reservoir.

4. The method according to claim 3, characterized in that, The geological data includes: original formation pressure of the aquifer, upper limit pressure of gas storage reservoir operation, and determining the storage capacity scale of the gas storage reservoir corresponding to the combination type based on the geological data includes: Based on the trap information, determining the range of the first pressurization coefficient; Based on the original formation pressure of the aquifer and the upper limit pressure of gas storage reservoir operation, and through the constraint of the range, determining the first pressurization coefficient; Based on the first pressurization coefficient, determining the storage capacity scale of the gas storage reservoir.

5. The method according to claim 4, wherein The range of the first pressurization coefficient is represented by the following formula: γ ≤ (H t / H0) + 1 where γ represents the first supercharging coefficient, H t represents the closure amplitude of the trap, and H0 represents the burial depth of the structural high point.

6. The method according to claim 4, characterized in that The storage capacity scale of the gas storage reservoir is represented by the following formula: Q m / Q c = γ - 1 Q = Q m +Q c Among them, Q represents the storage capacity scale of the gas storage reservoir, γ represents the pressurization coefficient, Q m represents the maximum working gas volume, and Q c represents the maximum cushion gas volume.

7. The method according to claim 2, characterized in that, When the combination type is AGW type, AOW type, BGW type, BOW type, determining the location of the gas storage reservoir based on the geological data and the combination type includes: Based on the geological data, injecting gas at the top and producing oil at the bottom of the first oil reservoir or the first gas reservoir to obtain a second oil reservoir or a second gas reservoir; Taking the location of the second oil reservoir or the second gas reservoir as the location of the gas storage reservoir.

8. The method according to claim 7, wherein The geological data includes: first formation pressure and second formation pressure, and determining the storage capacity scale of the gas storage reservoir corresponding to the combination type based on the geological data includes: Based on the first formation pressure and the second formation pressure, determining the second pressurization coefficient; Based on the second pressurization coefficient, determining the storage capacity scale of the gas storage reservoir through the material balance equation.

9. An apparatus for selecting a site for a gas storage reservoir, characterized in that, The device includes: An acquisition module for acquiring geological data of the target area; A determination module for determining the type of oil and gas reservoir and the development status of the oil and gas reservoir based on the geological data; A type module for determining the combination type based on the type of oil and gas reservoir and the development status of the oil and gas reservoir; A location module for determining the location of the gas storage reservoir based on the geological data and the combination type; A storage capacity scale module for determining the storage capacity scale of the gas storage reservoir corresponding to the combination type based on the geological data.

10. A computer device, characterized in that, including: A memory and a processor, which are communicatively connected to each other. Computer instructions are stored in the memory, and the processor executes the computer instructions to perform the method for selecting a site for a gas storage reservoir according to any one of claims 1 to 8.

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