A modularized separate injection and centralized control method and system for wellhead gas volume

Abstract

The present invention relates to the technical field of oil and gas field exploitation, and discloses a modularized wellhead gas volume separate injection and centralized control method and system. By obtaining wellhead gas injection demand information, gas injection skid module resource information and compressor unit resource information to be called, considering the moving distance for scheduling the gas injection transmission pipeline unit between any two compressor units, an optimal solution is obtained for the wellhead separate injection control strategy and gas injection skid modularized scheduling strategy of each compressor unit for a number of construction wellheads in each gas injection cycle, and the scheduling combination of the gas injection transmission pipeline unit and the control cabinet terminal and the separate injection control are executed. Thus, the gas injection transmission pipeline unit connecting the construction wellhead and the compressor unit is modularly scheduled and combined in the form of a gas injection skid, and the gas injection separate injection control of each construction wellhead is realized by using the control cabinet terminal, so as to improve the flexibility and precision of multi-wellhead gas injection control, reduce the difficulty of gas injection control management and the exploitation cost, and enhance the production efficiency of oil and gas field exploitation.

Description

Technical Field

[0001] The present invention relates to the technical field of oil and gas field exploitation, and particularly to a method and system for modularized separate injection and centralized control of wellhead gas volume. Background Art

[0002] Wellhead gas injection technology refers to a technical means in the process of oil and gas field exploitation, in which gas (mainly including carbon dioxide, nitrogen, natural gas, etc.) is injected from the wellhead into the underground oil reservoir or gas reservoir through special gas injection equipment (such as compressors, booster pumps, etc.). Its purpose is to improve the physical and chemical properties of the oil reservoir or gas reservoir and increase the exploitation efficiency and recovery rate of oil and gas.

[0003] In some scenarios of oil and gas field exploitation, the gas injection volume during the wellhead gas injection process is not constant (for example, the intermittent gas injection demand for promoting the periodic flow of oil and gas in the formation and the gas injection volume change demand for adapting to the gas well production regulation under the market or production plan). Under such demands, the gas injection process of each wellhead usually requires corresponding gas injection equipment and control cabinets to achieve independent control for each wellhead in each gas injection cycle. However, in the area with dense oil and gas wells, the number of wellheads is relatively large. If each wellhead is equipped with independent gas injection equipment, it will not only make the layout of the gas injection transmission pipelines in the oil and gas field exploitation area chaotic, increasing the management difficulty of decentralized gas injection control on the wellhead side, but also the independent use of gas injection equipment will make the exploitation cost very high. At the same time, since the number of wellheads in each production station is different (usually in the range of one to more than a dozen), and the gas injection volume during the wellhead gas injection process will change with the demand, the fixed matching mode of wellheads, gas injection transmission pipelines and gas injection equipment will result in low utilization rate of the wellhead gas injection hardware resources (i.e., gas injection transmission pipelines and gas injection equipment). On the premise of limited wellhead gas injection hardware resources, it seriously affects the production efficiency of oil and gas field exploitation.

[0004] Therefore, how to improve the flexibility and precision of multi-wellhead gas injection control for oil and gas fields with non-constant gas injection volume in the scenario of dense oil and gas wells, reduce the management difficulty of gas injection control and exploitation cost, and improve the production efficiency of oil and gas field exploitation is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The present invention provides a method and system for modularized separate injection and centralized control of wellhead gas volume, aiming to solve at least one of the above technical problems.

[0006] To achieve the above object, the present invention provides a method for modularized separate injection and centralized control of wellhead gas volume, including:

[0007] Obtain the wellhead gas injection demand information of the target construction area; wherein, the wellhead gas injection demand information includes the gas injection demands of several construction wellheads in each gas injection cycle within the target construction period.

[0008] Access the wellhead gas volume separate injection resource library, call the wellhead gas volume separate injection resource information stored in the wellhead gas volume separate injection resource library, and determine the injection skid module resource information and compressor unit resource information to be called according to the wellhead gas volume separate injection resource information;

[0009] Based on the compressor unit resource information and the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period, generate a wellhead separate injection control strategy between each compressor unit and several construction wellheads, and use the wellhead separate injection control strategy and the injection skid module resource information to determine the injection skid modular scheduling strategy of each compressor unit for several construction wellheads during each gas injection cycle;

[0010] Send the modular scheduling strategy to the scheduling terminal configured by the wellhead gas injection scheduler, and drive the wellhead gas injection scheduler to perform a scheduling combination action of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and construct a separate injection and centralized control combination architecture of each compressor unit during each gas injection cycle;

[0011] Send the wellhead separate injection control strategy to the control cabinet terminal in the separate injection and centralized control combination architecture where each compressor unit is located, so that each separate injection and centralized control combination architecture performs the separate injection control action for each construction wellhead during each gas injection cycle.

[0012] Optionally, the step of obtaining the wellhead gas injection requirement information of the target construction area specifically includes:

[0013] Access the wellhead gas injection requirement task library; wherein, the wellhead gas injection requirement task library stores several wellhead gas injection requirement tasks uploaded by the wellhead gas injection construction management terminal, and each wellhead gas injection requirement task includes wellhead identification information and the gas injection volume requirement value of the construction wellhead corresponding to the wellhead identification information during each gas injection cycle in the target construction period;

[0014] Call the construction area map, extract several target construction wellheads in the target construction area, match the gas injection volume requirement values of the wellhead identification information corresponding to the several target construction wellheads in the wellhead gas injection requirement task library, and generate the wellhead gas injection requirement information of the target construction area.

[0015] Optionally, the step of accessing the wellhead gas volume separate injection resource library, calling the wellhead gas volume separate injection resource information stored in the wellhead gas volume separate injection resource library, and determining the injection skid module resource information and compressor unit resource information to be called according to the wellhead gas volume separate injection resource information specifically includes:

[0016] Access the wellhead gas volume separate injection resource library; wherein, the wellhead gas volume separate injection resource library stores the wellhead gas volume separate injection resource information uploaded by the wellhead gas volume separate injection resource management terminal;

[0017] Based on the current usage status information of each gas injection transmission pipeline unit and each compressor unit recorded in the wellhead gas volume separate injection resource information, the gas injection transmission pipeline unit and the compressor unit with the current usage status being idle are used as the gas injection skid module resource information and the compressor unit resource information to be called.

[0018] Optionally, based on the compressor unit resource information and the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period, generate the wellhead separate injection control strategy steps between each compressor unit and several construction wellheads, specifically including:

[0019] Extract the number of idle compressor units, the maximum gas output volume, and the layout positions of each compressor unit in the compressor unit resource information. According to the layout positions of each compressor unit, calculate the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units;

[0020] Generate the wellhead separate injection control strategy between each compressor unit and several construction wellheads according to the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period, the maximum gas output volume of several compressor units in the compressor unit resource information, and the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units.

[0021] Optionally, according to the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period, the maximum gas output volume of several compressor units in the compressor unit resource information, and the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units, generate the wellhead separate injection control strategy steps between each compressor unit and several construction wellheads, specifically including:

[0022] According to the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period and the maximum gas output volume of several compressor units in the compressor unit resource information, consider the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units;

[0023] When the gas injection tasks for each injection cycle within the target construction period at each construction wellhead are assigned to the corresponding compressor units, the number of all compressor units performing gas injection tasks in each injection cycle is less than the number of idle compressor units in the compressor unit resource information as the first constraint condition; when the gas injection tasks for each injection cycle within the target construction period at each construction wellhead are assigned to the corresponding compressor units, the maximum gas output of each compressor unit is greater than the total gas injection demand of several construction wellheads corresponding to the compressor unit during each injection cycle as the second constraint condition; with the minimum sum of the moving distances of the compressor units for the gas injection tasks corresponding to two adjacent injection cycles in the target construction period at each construction wellhead as the optimization objective, optimize and solve the compressor units assigned to perform gas injection tasks in each injection cycle within the target construction period at each construction wellhead;

[0024] Based on the compressor units assigned to perform gas injection tasks in each injection cycle within the target construction period at each construction wellhead and the gas injection demand of each construction wellhead in each injection cycle, generate a wellhead sub-injection control strategy for performing sub-injection control of the gas injection volume between each compressor unit and several construction wellheads.

[0025] Optionally, the steps of determining the modular scheduling strategy of the gas injection skid for each compressor unit for several construction wellheads in each injection cycle by using the wellhead sub-injection control strategy and the gas injection skid module resource information specifically include:

[0026] According to the first layout position of the compressor unit assigned to perform the gas injection task in the first injection cycle within the target construction period at each construction wellhead in the wellhead sub-injection control strategy and the second layout position of the compressor unit assigned to perform the gas injection task in the last injection cycle in the previous target construction period, generate an initial modular scheduling strategy of the gas injection skid for each gas injection transmission pipeline unit to transfer from the compressor unit connecting the second layout position to the compressor unit connecting the first layout position;

[0027] According to the third layout position of the compressor unit assigned to perform the gas injection task in each subsequent injection cycle within the target construction period at each construction wellhead in the wellhead sub-injection control strategy and the fourth layout position of the compressor unit assigned to perform the gas injection task in the previous injection cycle, generate a subsequent modular scheduling strategy of the gas injection skid for each gas injection transmission pipeline unit to transfer from the compressor unit connecting the fourth layout position to the compressor unit connecting the third layout position;

[0028] Based on the initial modular scheduling strategy of the gas injection skid and the subsequent modular scheduling strategy of the gas injection skid, determine the modular scheduling strategy of the gas injection skid for each compressor unit for several construction wellheads in each injection cycle.

[0029] Optionally, the modular scheduling strategy is sent to the scheduling terminal configured by the wellhead gas injection scheduler, driving the wellhead gas injection scheduler to perform a scheduling combination action of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and constructing a combined architecture of separate injection and centralized control for each compressor unit in each gas injection cycle. The specific steps include:

[0030] The modular scheduling strategy is sent to the scheduling terminal configured by the wellhead gas injection scheduler, driving the wellhead gas injection scheduler to perform a scheduling connection action of the gas injection transmission pipeline unit between each compressor unit and the corresponding several construction wellheads based on the compressor unit assigned to each construction wellhead to perform the gas injection task in each gas injection cycle during the target construction period in the modular scheduling strategy;

[0031] Based on the gas injection transmission pipeline units connected by each compressor unit in each gas injection cycle, a control connection between each gas injection transmission pipeline unit and the corresponding control cabinet terminal of the compressor unit is established to construct a combined architecture of separate injection and centralized control for each compressor unit in each gas injection cycle.

[0032] Optionally, the wellhead separate injection control strategy is sent to the control cabinet terminal in the combined architecture of separate injection and centralized control where each compressor unit is located, so that each combined architecture of separate injection and centralized control performs the separate injection control action steps for each construction wellhead in each gas injection cycle. The specific steps include:

[0033] The wellhead separate injection control strategy is sent to the control cabinet terminal in the combined architecture of separate injection and centralized control where each compressor unit is located, driving the control cabinet terminal to convert the gas injection demand of each construction wellhead in each gas injection cycle in the wellhead separate injection control strategy into an injection volume separate injection control instruction;

[0034] The control cabinet terminal sends the injection volume separate injection control instruction to the injection volume control valve arranged on each gas injection transmission pipeline unit, so that each combined architecture of separate injection and centralized control performs the separate injection control action for each construction wellhead in each gas injection cycle.

[0035] Optionally, the method for modular separate injection and centralized control of wellhead gas volume further includes: when receiving an update instruction for wellhead gas injection demand information, obtaining the updated wellhead gas injection demand information, and using the updated wellhead gas injection demand information to regenerate the modular scheduling strategy of the gas injection skid for each compressor unit for several construction wellheads in each gas injection cycle.

[0036] In addition, to achieve the above object, the present invention also provides a system for modular separate injection and centralized control of wellhead gas volume, including:

[0037] An acquisition module for acquiring the wellhead gas injection demand information of a target construction area; wherein, the wellhead gas injection demand information includes the gas injection demands of several construction wellheads in each gas injection cycle during the target construction period.

[0038] An access module for accessing a wellhead gas volume separate injection resource library, calling the wellhead gas volume separate injection resource information stored in the wellhead gas volume separate injection resource library, and determining the injection skid module resource information and compressor unit resource information to be called according to the wellhead gas volume separate injection resource information.

[0039] A generation module for generating a wellhead separate injection control strategy between each compressor unit and several construction wellheads based on the compressor unit resource information and the gas injection demands of each construction wellhead in each gas injection cycle during the target construction period, and determining an injection skid modular scheduling strategy for each compressor unit for several construction wellheads in each gas injection cycle by using the wellhead separate injection control strategy and the injection skid module resource information.

[0040] A construction module for sending the modular scheduling strategy to a scheduling terminal configured by a wellhead gas injection scheduler, driving the wellhead gas injection scheduler to perform a scheduling combination action of an injection transmission pipeline unit and a control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and constructing a separate injection and centralized control combination architecture for each compressor unit in each gas injection cycle.

[0041] An execution module for sending the wellhead separate injection control strategy to the control cabinet terminal in the separate injection and centralized control combination architecture where each compressor unit is located, so that each separate injection and centralized control combination architecture performs a separate injection control action for each construction wellhead in each gas injection cycle.

[0042] The beneficial effects of the present invention are as follows: A method and system for modular separate injection and centralized control of wellhead gas volume are proposed. By adopting the method of injection skids, the injection transmission pipeline units connecting construction wellheads and compressor units are modularly scheduled and combined, and the injection separate injection control for each construction wellhead connected to the injection skid is realized by using the control cabinet terminal configured on the injection skid. At the same time, on the premise of meeting the usage restrictions of the injection skid module resource information and the compressor unit resource information, the modular scheduling combination efficiency of each gas injection cycle is improved as much as possible, and the production delay caused by the recombination of injection skids is minimized. It can meet the production applications of any number of wellheads and gas injection demands, improve the flexibility and fineness of multi-wellhead gas injection control for non-constant gas injection oil and gas fields in the scenario of dense well areas in oil and gas fields, reduce the difficulty of gas injection control management and the exploitation cost, and improve the production efficiency of oil and gas field exploitation. Description of the Drawings

[0043] Figure 1It is a schematic flow chart of the method for modularized separate injection and centralized control of wellhead gas volume in the present invention;

[0044] Figure 2 It is a schematic structural diagram of the system for modularized separate injection and centralized control of wellhead gas volume in the present invention. Specific embodiments

[0045] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0046] The embodiment of the present invention provides a method for modularized separate injection and centralized control of wellhead gas volume. Refer to Figure 1 , Figure 1 It is a schematic flow chart of the method for modularized separate injection and centralized control of wellhead gas volume in the embodiment of the present invention. The method for modularized separate injection and centralized control of wellhead gas volume includes the following steps:

[0047] S1: Obtain the wellhead gas injection demand information of the target construction area; wherein, the wellhead gas injection demand information includes the gas injection demands of several construction wellheads in each gas injection cycle during the target construction period;

[0048] S2: Access the wellhead gas volume separate injection resource library, call the wellhead gas volume separate injection resource information stored in the wellhead gas volume separate injection resource library, and determine the injection skid module resource information and compressor unit resource information to be called according to the wellhead gas volume separate injection resource information;

[0049] S3: Based on the compressor unit resource information and the gas injection demands of each construction wellhead in each gas injection cycle during the target construction period, generate a wellhead separate injection control strategy between each compressor unit and several construction wellheads, and use the wellhead separate injection control strategy and the injection skid module resource information to determine the injection skid modular scheduling strategy of each compressor unit for several construction wellheads in each gas injection cycle;

[0050] S4: Send the modular scheduling strategy to the scheduling terminal configured by the wellhead gas injection scheduler, and drive the wellhead gas injection scheduler to perform the scheduling combination actions of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and construct the separate injection and centralized control combination architecture of each compressor unit in each gas injection cycle;

[0051] S5: Send the wellhead separate injection control strategy to the control cabinet terminal in the separate injection and centralized control combination architecture where each compressor unit is located, so that each separate injection and centralized control combination architecture performs the separate injection control action for each construction wellhead in each gas injection cycle.

[0052] It should be noted that in some scenarios of oil and gas field exploitation, the gas injection volume during the wellhead gas injection process is not constant (for example, the intermittent gas injection demand for promoting the periodic flow of oil and gas in the formation and the gas injection volume change demand for adapting to the wellhead production regulation under the market or production plan). Under such demands, the gas injection process at each wellhead usually requires corresponding gas injection equipment and control cabinets to achieve independent control for each wellhead in each gas injection cycle. However, in the area with dense oil and gas field wells, the number of wellheads is relatively large. If each wellhead is equipped with independent gas injection equipment, it will not only make the layout of the gas injection transmission pipelines in the oil and gas field exploitation area chaotic, increasing the management difficulty of decentralized gas injection control on the wellhead side, but also make the exploitation cost very high due to the independent use of gas injection equipment. At the same time, since the gas injection volume during the wellhead gas injection process changes with the demand, the fixed matching mode of wellheads, gas injection transmission pipelines and gas injection equipment will result in low utilization rate of the wellhead gas injection hardware resources (i.e., gas injection transmission pipelines and gas injection equipment). On the premise of limited wellhead gas injection hardware resources, it seriously affects the production efficiency of oil and gas field exploitation.

[0053] To solve the above problems, in this embodiment, by obtaining the wellhead gas injection demand information, the gas injection skid module resource information and the compressor unit resource information to be called in the target construction area, according to the gas injection demand of each construction wellhead in each gas injection cycle within the target construction period and the maximum gas output of several compressor units in the compressor unit resource information, considering the moving distance of the gas injection transmission pipeline unit scheduling action between any two compressor units, with the constraints that the gas injection demand meets the maximum gas output and the number of compressor units used is less than the number of idle compressor units, and taking the minimum total moving distance of the gas injection transmission pipeline unit scheduling within the target construction period as the optimization goal, the wellhead separate injection control strategy for each compressor unit to several construction wellheads in each gas injection cycle is optimized and solved. Then, based on the wellhead separate injection control strategy and the gas injection skid module resource information, the gas injection skid modular scheduling strategy for each compressor unit to several construction wellheads in each gas injection cycle is determined. The gas injection skid modular scheduling strategy is used to drive the wellhead gas injection scheduler to execute the scheduling combination of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads, and the wellhead separate injection control strategy is used to drive the control cabinet terminal to execute the separate injection control action for each construction wellhead in each gas injection cycle.

[0054] Thus, in this embodiment, the injection gas transmission pipeline unit connecting the construction wellhead and the compressor unit is modularly scheduled and combined by using an injection gas skid, and the injection gas sub-injection control for each construction wellhead connected to the injection gas skid is realized by using the control cabinet terminal configured on the injection gas skid. At the same time, on the premise of meeting the usage restrictions of the injection gas skid module resource information and the compressor unit resource information, the modular scheduling and combination efficiency of each injection cycle is improved as much as possible, and the production delay caused by the recombination of the injection gas skid is minimized, which can meet the production applications with any number of wellheads and injection gas requirements, improve the flexibility and fineness of multi-wellhead injection gas control for oil and gas fields with non-constant injection gas volume in the scenario of dense well areas in oil and gas fields, reduce the difficulty of injection gas control management and the exploitation cost, and improve the production efficiency of oil and gas field exploitation.

[0055] In a preferred embodiment, the steps of obtaining the wellhead injection gas demand information of the target construction area specifically include:

[0056] S11: Access the wellhead injection gas demand task library; wherein, the wellhead injection gas demand task library stores a number of wellhead injection gas demand tasks uploaded by the wellhead injection gas construction management terminal, and each wellhead injection gas demand task includes wellhead identification information and the injection gas volume demand value of the corresponding construction wellhead in each injection cycle during the target construction period;

[0057] S12: Call up the construction area map, extract a number of target construction wellheads in the target construction area, and match the injection gas volume demand values corresponding to the wellhead identification information of the number of target construction wellheads in the wellhead injection gas demand task library to generate the wellhead injection gas demand information of the target construction area.

[0058] In this embodiment, by obtaining a number of wellhead injection gas demand tasks uploaded by the wellhead injection gas construction management terminal, extracting the injection gas volume demand value of the construction wellhead in each injection cycle during the target construction period in the wellhead injection gas demand task, and then by calling up the construction area, the wellhead injection gas demand information of the target construction area is generated.

[0059] In a preferred embodiment, the steps of accessing the wellhead gas volume sub-injection resource library, calling the wellhead gas volume sub-injection resource information stored in the wellhead gas volume sub-injection resource library, and determining the injection gas skid module resource information and the compressor unit resource information to be called according to the wellhead gas volume sub-injection resource information specifically include:

[0060] S21: Access the wellhead gas volume sub-injection resource library; wherein, the wellhead gas volume sub-injection resource library stores the wellhead gas volume sub-injection resource information uploaded by the wellhead gas volume sub-injection resource management terminal;

[0061] S22: Based on the current usage status information of each gas injection transmission pipeline unit and each compressor unit recorded in the wellhead gas volume separate injection resource information, the gas injection transmission pipeline unit and the compressor unit with the current usage status being idle are used as the gas injection skid module resource information and the compressor unit resource information to be called.

[0062] In this embodiment, by accessing the wellhead gas volume separate injection resource library, the current usage status information of each gas injection transmission pipeline unit and each compressor unit recorded in the wellhead gas volume separate injection resource library is extracted, and the idle gas injection transmission pipeline unit and the compressor unit are used as the gas injection skid module resource information and the compressor unit resource information to be called.

[0063] In a preferred embodiment, based on the compressor unit resource information and the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period, the wellhead separate injection control strategy steps between each compressor unit and several construction wellheads are generated, specifically including:

[0064] S31: Extract the number of idle compressor units, the maximum gas output volume, and the layout position of each compressor unit in the compressor unit resource information. According to the layout position of each compressor unit, calculate the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units;

[0065] S32: Generate the wellhead separate injection control strategy between each compressor unit and several construction wellheads according to the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period, the maximum gas output volume of several compressor units in the compressor unit resource information, and the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units.

[0066] Furthermore, according to the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period, the maximum gas output volume of several compressor units in the compressor unit resource information, and the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units, the wellhead separate injection control strategy steps between each compressor unit and several construction wellheads are generated, specifically including:

[0067] S321: According to the gas injection requirements of each construction wellhead during each gas injection cycle in the target construction period and the maximum gas output volume of several compressor units in the compressor unit resource information, consider the moving distance for the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor units;

[0068] S322: When the gas injection tasks for each injection cycle within the target construction period at each construction wellhead are assigned to the corresponding compressor units, the first constraint condition is that the number of all compressor units performing gas injection tasks in each injection cycle is less than the number of idle compressor units in the compressor unit resource information; when the gas injection tasks for each injection cycle within the target construction period at each construction wellhead are assigned to the corresponding compressor units, the second constraint condition is that the maximum gas output of each compressor unit is greater than the total gas injection demand of several construction wellheads corresponding to the compressor unit during each injection cycle; with the minimum sum of the moving distances of the compressor units for the gas injection tasks corresponding to two adjacent injection cycles in the target construction period at each construction wellhead as the optimization objective, optimize and solve the compressor units assigned to perform gas injection tasks for each injection cycle within the target construction period at each construction wellhead.

[0069] S323: Based on the compressor units assigned to perform gas injection tasks for each injection cycle within the target construction period at each construction wellhead and the gas injection demand of each construction wellhead during each injection cycle, generate a wellhead sub-injection control strategy for performing sub-injection control of the gas injection volume between each compressor unit and several construction wellheads.

[0070] On this basis, use the wellhead sub-injection control strategy and the gas injection skid module resource information to determine the steps of the gas injection skid modular scheduling strategy for each compressor unit for several construction wellheads during each injection cycle, specifically including:

[0071] S33: According to the first layout position of the compressor unit assigned to perform the gas injection task in the first injection cycle within the target construction period at each construction wellhead in the wellhead sub-injection control strategy and the second layout position of the compressor unit assigned to perform the gas injection task in the last injection cycle within the previous target construction period, generate an initial gas injection skid modular scheduling strategy for each gas injection transmission pipeline unit to transfer from the compressor unit connecting the second layout position to the compressor unit connecting the first layout position.

[0072] S34: According to the third layout position of the compressor unit assigned to perform the gas injection task in each subsequent injection cycle within the target construction period at each construction wellhead in the wellhead sub-injection control strategy and the fourth layout position of the compressor unit assigned to perform the gas injection task in the previous injection cycle, generate a subsequent gas injection skid modular scheduling strategy for each gas injection transmission pipeline unit to transfer from the compressor unit connecting the fourth layout position to the compressor unit connecting the third layout position.

[0073] S35: Based on the initial gas injection skid modular scheduling strategy and the subsequent gas injection skid modular scheduling strategy, determine the gas injection skid modular scheduling strategy for each compressor unit for several construction wellheads during each injection cycle.

[0074] In this embodiment, by obtaining the wellhead gas injection demand information of the target construction area and the resource information of the gas injection skid module and the compressor unit to be called, according to the gas injection demand of each construction wellhead in each gas injection cycle during the target construction period and the maximum gas output of several compressor units in the compressor unit resource information, considering the moving distance of the gas injection transmission pipeline unit scheduling action between any two compressor units, with the constraints that the gas injection demand meets the maximum gas output and the number of compressor units in use is less than the number of idle compressor units, and with the minimum total moving distance of the gas injection transmission pipeline unit scheduling during the target construction period as the optimization goal, the wellhead separate injection control strategy of each compressor unit for several construction wellheads in each gas injection cycle is optimized and solved, and based on the wellhead separate injection control strategy and the resource information of the gas injection skid module, the gas injection skid modular scheduling strategy of each compressor unit for several construction wellheads in each gas injection cycle is determined.

[0075] In a preferred embodiment, the modular scheduling strategy is sent to the scheduling terminal configured by the wellhead gas injection scheduler, driving the wellhead gas injection scheduler to execute the scheduling combination action of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and the steps of constructing the separate injection and centralized control combination architecture of each compressor unit in each gas injection cycle specifically include:

[0076] S41: Send the modular scheduling strategy to the scheduling terminal configured by the wellhead gas injection scheduler, driving the wellhead gas injection scheduler to execute the scheduling connection action of the gas injection transmission pipeline unit between each compressor unit and the corresponding several construction wellheads based on the compressor unit to which each construction wellhead is assigned to execute the gas injection task in each gas injection cycle during the target construction period in the modular scheduling strategy;

[0077] S42: Based on the gas injection transmission pipeline units connected by each compressor unit in each gas injection cycle, establish the control connection between each gas injection transmission pipeline unit and the control cabinet terminal corresponding to the compressor unit, and construct the separate injection and centralized control combination architecture of each compressor unit in each gas injection cycle.

[0078] Furthermore, the wellhead separate injection control strategy is sent to the control cabinet terminal in the separate injection and centralized control combination architecture where each compressor unit is located, so that each separate injection and centralized control combination architecture executes the separate injection control action steps for each construction wellhead in each gas injection cycle, specifically including:

[0079] S51: Send the wellhead separate injection control strategy to the control cabinet terminal in the separate injection and centralized control combination architecture where each compressor unit is located, driving the control cabinet terminal to convert the gas injection demand of each construction wellhead in each gas injection cycle in the wellhead separate injection control strategy into a gas volume separate injection control instruction;

[0080] S52: The control cabinet terminal sends the injection volume sub-injection control instruction to the injection volume control valves arranged on each injection gas transmission pipeline unit, so that each sub-injection and centralized control combination architecture executes the sub-injection control action for each construction wellhead in each injection gas cycle.

[0081] In this embodiment, the injection gas skid modular scheduling strategy is used to drive the wellhead injection gas schedulers to execute the scheduling combination of the injection gas transmission pipeline units and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads, and the wellhead sub-injection control strategy is used to drive the control cabinet terminal to execute the sub-injection control action for each construction wellhead in each injection gas cycle. Thus, by adopting the injection gas skid method, the injection gas transmission pipeline units connecting the construction wellheads and the compressor units are modularly scheduled and combined, and the control cabinet terminal configured on the injection gas skid is used to realize the injection gas sub-injection control for each construction wellhead connected to the injection gas skid. At the same time, on the premise of meeting the usage restrictions of the injection gas skid module resource information and the compressor unit resource information, the modular scheduling and combination efficiency of each injection gas cycle is improved as much as possible, the production delay caused by the reorganization of the injection gas skid is minimized, the flexibility and fineness of the multi-wellhead injection gas control for the non-constant injection volume oil and gas field in the oil and gas well dense area scenario are improved, the injection gas control management difficulty and the exploitation cost are reduced, and the production efficiency of the oil and gas field exploitation is improved.

[0082] In a preferred embodiment, the wellhead gas volume modular sub-injection and centralized control method further includes: when receiving the wellhead injection gas demand information update instruction, obtaining the updated wellhead injection gas demand information, and using the updated wellhead injection gas demand information to regenerate the injection gas skid modular scheduling strategy for each compressor unit for several construction wellheads in each injection gas cycle.

[0083] Refer to Figure 2 , Figure 2 is a schematic structural diagram of the wellhead gas volume modular sub-injection and centralized control system of the embodiment of the present invention. The wellhead gas volume modular sub-injection and centralized control system includes:

[0084] An acquisition module 10, configured to acquire the wellhead injection gas demand information of the target construction area; wherein, the wellhead injection gas demand information includes the injection gas demands of several construction wellheads in each injection gas cycle during the target construction period.

[0085] An access module 20, configured to access the wellhead gas volume sub-injection resource library, call the wellhead gas volume sub-injection resource information stored in the wellhead gas volume sub-injection resource library, and determine the injection gas skid module resource information and the compressor unit resource information to be called according to the wellhead gas volume sub-injection resource information.

[0086] A generating module 30, configured to generate a wellhead separate injection control strategy between each compressor unit and a plurality of construction wellheads based on the compressor unit resource information and the gas injection requirements of each construction wellhead during each gas injection cycle in a target construction period, and determine a modular scheduling strategy of the injection skid module for each compressor unit for a plurality of construction wellheads during each gas injection cycle by using the wellhead separate injection control strategy and the injection skid module resource information;

[0087] A constructing module 40, configured to send the modular scheduling strategy to a scheduling terminal configured by a wellhead gas injection scheduler, and drive the wellhead gas injection scheduler to perform a scheduling combination action of an injection transmission pipeline unit and a control cabinet terminal between each compressor unit and the corresponding plurality of construction wellheads based on the modular scheduling strategy, so as to construct a separate injection and centralized control combination architecture of each compressor unit during each gas injection cycle;

[0088] An executing module 50, configured to send the wellhead separate injection control strategy to a control cabinet terminal in the separate injection and centralized control combination architecture where each compressor unit is located, so that each separate injection and centralized control combination architecture performs a separate injection control action for each construction wellhead during each gas injection cycle.

[0089] Other embodiments or specific implementation manners of the wellhead gas volume modular separate injection and centralized control system of the present invention may refer to the above method embodiments, and will not be elaborated herein.

[0090] It can be understood that in the description of this specification, the descriptions referring to terms such as "one embodiment", "another embodiment", "other embodiments", or "the first embodiment to the Nth embodiment" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0091] It should be noted that in this article, the term "comprising", "including" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or system. Without further limitation, an element defined by the phrase "including one..." does not exclude the existence of additional identical elements in the process, method, article or system including the element.

[0092] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. A modular injection and centralized control method for wellhead gas volume, characterized in that: include: Acquire wellhead gas injection demand information of the target construction area; wherein the wellhead gas injection demand information includes the gas injection demand of several construction wellheads in each gas injection cycle within the target construction period; Accessing a wellhead gas injection resource library, calling the wellhead gas injection resource information stored in the wellhead gas injection resource library, and determining the gas injection skid module resource information and the compressor unit resource information to be called according to the wellhead gas injection resource information; Based on the compressor unit resource information and the gas injection demand of each construction wellhead in each gas injection cycle within the target construction period, a wellhead injection control strategy between each compressor unit and several construction wellheads is generated, and the wellhead injection control strategy and the gas injection skid module resource information are used to determine the gas injection skid modular scheduling strategy for each compressor unit for several construction wellheads in each gas injection cycle; The modular scheduling strategy is sent to the scheduling terminal configured by the wellhead gas injection scheduling personnel, so that the wellhead gas injection scheduling personnel can execute the scheduling combination action of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and build a combined architecture of sub-injection and centralized control of each compressor unit in each gas injection cycle; The wellhead injection control strategy is sent to the control cabinet terminal in the injection and centralized control combined architecture where each compressor unit is located, so that each injection and centralized control combined architecture executes the injection control action for each construction wellhead in each gas injection cycle; The steps of generating a wellhead injection control strategy specifically include: Extract the number of idle compressor groups and the maximum gas output and layout position of each compressor group from the compressor group resource information, and calculate the moving distance of the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor groups according to the layout position of each compressor group; Generate a wellhead split injection control strategy between each compressor group and several construction wellheads according to the gas injection demand of each construction wellhead in each gas injection cycle within the target construction period, the maximum gas output of several compressor groups in the compressor group resource information, and the moving distance of the gas injection transmission pipeline unit scheduling action executed by the gas injection skid module resource information between any two compressor groups; Among them, the steps for determining the modular scheduling strategy of the gas injection skid include: Generate a gas injection skid modular initial scheduling strategy for each gas injection transmission pipeline unit, which is transferred from the compressor group connected to the second layout position to the compressor group connected to the first layout position, according to the first layout position of the compressor group assigned to each construction wellhead in the first gas injection cycle within the target construction period and the second layout position of the compressor group assigned to the compressor group performed the gas injection task in the last gas injection cycle within the previous target construction period in the wellhead injection control strategy; Generate a modular subsequent scheduling strategy for the gas injection skid in which each gas injection transmission pipeline unit is transferred from the compressor group connected to the fourth layout position to the compressor group connected to the third layout position according to the third layout position of the compressor group assigned to each construction wellhead in each subsequent gas injection cycle within the target construction period and the fourth layout position of the compressor group assigned to the compressor group in the previous gas injection cycle in the wellhead injection control strategy; Based on the modular initial scheduling strategy of the gas injection skid and the modular subsequent scheduling strategy of the gas injection skid, a modular scheduling strategy of the gas injection skid for each compressor unit for a number of construction wellheads in each gas injection cycle is determined.

2. The method for modular injection and centralized control of wellhead gas volume according to claim 1, characterized in that: The steps for obtaining the wellhead gas injection demand information of the target construction area include: Accessing a wellhead gas injection demand task library; wherein the wellhead gas injection demand task library stores a number of wellhead gas injection demand tasks uploaded by the wellhead gas injection construction management terminal, each wellhead gas injection demand task including wellhead identification information and a gas injection volume demand value of the construction wellhead corresponding to the wellhead identification information in each gas injection cycle within a target construction period; The construction area map is called to extract several target construction wellheads in the target construction area, and the gas injection volume demand values ​​corresponding to the wellhead identification information of the several target construction wellheads are matched in the wellhead gas injection demand task library to generate the wellhead gas injection demand information of the target construction area.

3. The method for modular injection and centralized control of wellhead gas volume according to claim 1, characterized in that: The steps of accessing a wellhead gas injection resource library, calling the wellhead gas injection resource information stored in the wellhead gas injection resource library, and determining the gas injection skid module resource information and the compressor unit resource information to be called according to the wellhead gas injection resource information specifically include: Accessing a wellhead gas injection resource library; wherein the wellhead gas injection resource library stores wellhead gas injection resource information uploaded by a wellhead gas injection resource management terminal; Based on the current usage status information of each gas injection transmission pipeline unit and each compressor group recorded in the wellhead gas injection resource information, the gas injection transmission pipeline unit and compressor group with idle current usage status information are used as the gas injection skid module resource information and compressor group resource information to be called.

4. The method for modular injection and centralized control of wellhead gas volume according to claim 1, characterized in that: According to the gas injection demand of each construction wellhead in each gas injection cycle within the target construction period, the maximum gas output of several compressor groups in the compressor group resource information, and the moving distance of the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor groups, the wellhead split injection control strategy steps between each compressor group and several construction wellheads are generated, specifically including: According to the gas injection demand of each construction wellhead in each gas injection cycle during the target construction period and the maximum gas output of several compressor groups in the compressor group resource information, the moving distance of the gas injection transmission pipeline unit scheduling action of executing the gas injection skid module resource information between any two compressor groups is considered; The first constraint condition is that when the gas injection task of each construction wellhead in each gas injection cycle within the target construction period is assigned to the corresponding compressor group, the number of all compressor groups performing the gas injection task in each gas injection cycle is less than the number of idle compressor groups in the compressor group resource information; the second constraint condition is that when the gas injection task of each construction wellhead in each gas injection cycle within the target construction period is assigned to the corresponding compressor group, the maximum gas output of each compressor group is greater than the sum of the gas injection demands of several construction wellheads corresponding to the compressor group in each gas injection cycle when the compressor group performs the gas injection task; the optimization goal is to minimize the sum of the moving distances of the compressor groups corresponding to the gas injection tasks of two adjacent gas injection cycles in the target construction period for each construction wellhead, and optimize the compressor groups to which each construction wellhead is assigned to perform the gas injection task in each gas injection cycle within the target construction period; Based on the compressor group assigned to each construction wellhead to perform the gas injection task in each gas injection cycle within the target construction period and the gas injection demand of each construction wellhead in each gas injection cycle, a wellhead injection control strategy is generated for executing the gas injection volume distribution control between each compressor group and several construction wellheads.

5. The method for modular injection and centralized control of wellhead gas volume according to claim 1, characterized in that: The modular scheduling strategy is sent to the scheduling terminal configured by the wellhead gas injection scheduling personnel, so that the wellhead gas injection scheduling personnel are driven to perform the scheduling combination action of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and construct the steps of the combined architecture of the injection and centralized control of each compressor unit in each gas injection cycle, specifically including: The modular scheduling strategy is sent to a scheduling terminal configured by a wellhead gas injection scheduling personnel, so as to drive the wellhead gas injection scheduling personnel to perform a scheduling connection action for the gas injection transmission pipeline units between each compressor group and the corresponding number of construction wellheads based on the compressor group assigned to the gas injection task for each gas injection cycle of each construction wellhead in the target construction period in the modular scheduling strategy; Based on the gas injection transmission pipeline unit connected to each compressor group in each gas injection cycle, a control connection is established between each gas injection transmission pipeline unit and the corresponding control cabinet terminal of the compressor group, and a combined architecture of distributed injection and centralized control of each compressor group in each gas injection cycle is constructed.

6. The method for modular injection and centralized control of wellhead gas volume according to claim 5, characterized in that: The wellhead injection control strategy is sent to the control cabinet terminal in the injection and centralized control combined architecture where each compressor unit is located, so that each injection and centralized control combined architecture executes injection control action steps for each construction wellhead in each gas injection cycle, specifically including: The wellhead injection control strategy is sent to the control cabinet terminal in the injection and centralized control combined architecture where each compressor unit is located, driving the control cabinet terminal to convert the gas injection demand of each construction wellhead in each gas injection cycle in the wellhead injection control strategy into a gas injection volume injection control instruction; The control cabinet terminal sends the gas injection volume distribution control instruction to the gas injection volume control valve arranged on each gas injection transmission pipeline unit, so that each distribution and centralized control combined architecture executes the distribution control action for each construction wellhead in each gas injection cycle.

7. The method for modular injection and centralized control of wellhead gas volume according to claim 6, characterized in that: The method further includes: upon receiving a wellhead gas injection demand information update instruction, obtaining updated wellhead gas injection demand information, and using the updated wellhead gas injection demand information to regenerate a gas injection skid modular scheduling strategy for each compressor unit for a number of construction wellheads in each gas injection cycle.

8. A modular injection and centralized control system for wellhead gas volume, characterized in that: include: An acquisition module is used to acquire wellhead gas injection demand information of a target construction area; wherein the wellhead gas injection demand information includes the gas injection demand of a number of construction wellheads in each gas injection cycle within a target construction period; An access module is used to access a wellhead gas injection resource library, call the wellhead gas injection resource information stored in the wellhead gas injection resource library, and determine the gas injection skid module resource information and the compressor unit resource information to be called according to the wellhead gas injection resource information; A generation module is used to generate a wellhead injection control strategy between each compressor group and several construction wellheads based on the compressor group resource information and the gas injection demand of each construction wellhead in each gas injection cycle within the target construction period, and to determine the gas injection skid modular scheduling strategy for each compressor group for several construction wellheads in each gas injection cycle by using the wellhead injection control strategy and the gas injection skid module resource information; A construction module is used to send the modular scheduling strategy to the scheduling terminal configured by the wellhead gas injection scheduling personnel, so as to drive the wellhead gas injection scheduling personnel to execute the scheduling combination action of the gas injection transmission pipeline unit and the control cabinet terminal between each compressor unit and the corresponding several construction wellheads based on the modular scheduling strategy, and to construct the sub-injection and centralized control combination architecture of each compressor unit in each gas injection cycle; An execution module is used to send the wellhead injection control strategy to the control cabinet terminal in the injection and centralized control combined architecture where each compressor unit is located, so that each injection and centralized control combined architecture executes the injection control action for each construction wellhead in each gas injection cycle; Among them, the wellhead injection control strategy is generated, which specifically includes: Extract the number of idle compressor groups and the maximum gas output and layout position of each compressor group from the compressor group resource information, and calculate the moving distance of the gas injection transmission pipeline unit scheduling action of the gas injection skid module resource information between any two compressor groups according to the layout position of each compressor group; Generate a wellhead split injection control strategy between each compressor group and several construction wellheads according to the gas injection demand of each construction wellhead in each gas injection cycle within the target construction period, the maximum gas output of several compressor groups in the compressor group resource information, and the moving distance of the gas injection transmission pipeline unit scheduling action executed by the gas injection skid module resource information between any two compressor groups; Among them, the modular scheduling strategy of the gas injection skid is determined, including: Generate a gas injection skid modular initial scheduling strategy for each gas injection transmission pipeline unit, which is transferred from the compressor group connected to the second layout position to the compressor group connected to the first layout position, according to the first layout position of the compressor group assigned to each construction wellhead in the first gas injection cycle within the target construction period and the second layout position of the compressor group assigned to the compressor group performed the gas injection task in the last gas injection cycle within the previous target construction period in the wellhead injection control strategy; Generate a modular subsequent scheduling strategy for the gas injection skid in which each gas injection transmission pipeline unit is transferred from the compressor group connected to the fourth layout position to the compressor group connected to the third layout position according to the third layout position of the compressor group assigned to each construction wellhead in each subsequent gas injection cycle within the target construction period and the fourth layout position of the compressor group assigned to the compressor group in the previous gas injection cycle in the wellhead injection control strategy; Based on the modular initial scheduling strategy of the gas injection skid and the modular subsequent scheduling strategy of the gas injection skid, a modular scheduling strategy of the gas injection skid for each compressor unit for a number of construction wellheads in each gas injection cycle is determined.

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