Wellhead gas flow modularized separate injection and centralized control method and system

Abstract

The invention relates to the technical field of oil and gas field exploitation, and discloses a modularized separate injection and centralized control method and system for wellhead gas flow, and the method comprises the steps: obtaining wellhead gas injection demand information, to-be-called gas injection pry module resource information and compressor unit resource information; a well mouth separate injection control strategy and a gas injection pry modular scheduling strategy of each compressor unit for a plurality of construction well mouths in each gas injection period are optimized and solved by considering a moving distance for executing gas injection transmission pipeline unit scheduling between any two compressor units; and scheduling combination and separate injection control of the gas injection transmission pipeline unit and the control cabinet terminal are executed. Therefore, the gas injection transmission pipeline units connected between the construction well mouths and the compressor unit are modularly dispatched and combined in a gas injection pry mode, gas injection separate injection control over each construction well mouth is achieved through the control cabinet terminal, the flexibility and fineness of multi-well-mouth gas injection control are improved, the gas injection control management difficulty and the mining cost are reduced, and the production efficiency is improved. The production efficiency of oil-gas field exploitation is improved.

Description

Technical Field

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

[0002] Wellhead gas injection technology refers to a technical means of injecting gas (mainly including carbon dioxide, nitrogen, natural gas, etc.) from the wellhead into the underground oil or gas layer through special gas injection equipment (such as compressors, booster pumps, etc.) during the oil and gas field exploitation process. Its purpose is to improve the physical and chemical properties of the oil or gas layer and improve 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 variable gas injection volume demand for adapting to the market or production plan to adjust the gas well production). Under such requirements, the gas injection process of each wellhead usually needs to be equipped with corresponding gas injection equipment and control cabinets to achieve independent control of each wellhead in each gas injection cycle. However, in areas with densely populated oil and gas fields, the number of wellheads is relatively large. If each wellhead is equipped with independent gas injection equipment, not only will the layout of the gas injection transmission pipelines in the oil and gas field exploitation area be chaotic, and the management difficulty of decentralized gas injection control on the wellhead side be increased, but the independent use of gas injection equipment will also make the exploitation cost very high. At the same time, since the number of wellheads in each production site is different (usually the number ranges from one to more than ten), and the gas injection volume during the wellhead gas injection process will vary with demand, the fixed matching mode of the wellhead, gas injection transmission pipeline and gas injection equipment will result in low utilization of the wellhead gas injection hardware resources (i.e., gas injection transmission pipeline and gas injection equipment). Under the premise that the wellhead gas injection hardware resources are limited, the production efficiency of oil and gas field exploitation is seriously affected.

[0004] Therefore, how to improve the flexibility and precision of multi-wellhead gas injection control in oil and gas fields with non-constant gas injection volume in densely populated areas of oil and gas fields, reduce the difficulty of gas injection control management and production costs, and improve the production efficiency of oil and gas field production is a technical problem that needs to be solved urgently. Summary of the invention

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

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

[0007] Optionally, the step of obtaining the wellhead gas injection demand information of the target construction area specifically includes: 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.

[0008] Optionally, the step 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 includes: 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.

[0009] Optionally, based on the compressor unit resource information and the gas injection demand of each construction wellhead in each gas injection cycle during the target construction period, a wellhead injection control strategy step is generated between each compressor unit and a plurality of construction wellheads, specifically including: 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; 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 executing the gas injection skid module resource information between any two compressor groups, a wellhead injection control strategy between each compressor group and several construction wellheads is generated.

[0010] Optionally, according to the gas injection demand of each construction wellhead in each gas injection cycle during 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 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.

[0011] Optionally, the wellhead injection control strategy and the gas injection skid module resource information are used to determine the gas injection skid modular scheduling strategy steps for each compressor unit for a number of construction wellheads in each gas injection cycle, specifically including: Generate a gas injection skid modular initial scheduling strategy for each gas injection transmission pipeline unit, in which the compressor unit connected to the first layout position is transferred to the compressor unit connected to the second layout position, according to the first layout position of the compressor unit assigned to each construction wellhead in the first gas injection cycle within the target construction period and the second layout position of the compressor unit assigned to the compressor unit 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.

[0012] Optionally, the modular scheduling strategy is sent to a scheduling terminal configured by a wellhead gas injection scheduling personnel, so that the wellhead gas injection scheduling personnel are driven 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 combined architecture step of sub-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.

[0013] Optionally, 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.

[0014] Optionally, the modular injection and centralized control method of wellhead gas volume also 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 modular scheduling strategy for the gas injection skid of each compressor unit for a number of construction wellheads in each gas injection cycle.

[0015] In addition, in order to achieve the above-mentioned purpose, the present invention also provides a wellhead gas volume modular injection and centralized control system, comprising: 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; The 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.

[0016] The beneficial effects of the present invention are as follows: a method and system for modular injection and centralized control of wellhead gas volume are proposed, wherein the gas injection transmission pipeline unit connecting the construction wellhead and the compressor unit is modularly scheduled and combined by means of a gas injection skid, and the control cabinet terminal configured on the gas injection skid is used to realize gas injection and injection control for each construction wellhead connected to the gas injection skid, and at the same time, the modular scheduling and combination efficiency of each gas injection cycle is improved as much as possible under the premise of satisfying the use restrictions of the gas injection skid module resource information and the compressor unit resource information, and the production delay caused by the reorganization of the gas injection skid is minimized, and the production application of any wellhead number and gas injection demand can be met, and 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 densely populated oil and gas fields is improved, the difficulty of gas injection control management and the mining cost are reduced, and the production efficiency of oil and gas field mining is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flow chart of the modular injection and centralized control method of wellhead gas volume of the present invention; Figure 2 It is a structural schematic diagram of the modular injection and centralized control system of wellhead gas volume of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with 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 intended to limit the present invention.

[0019] The embodiment of the present invention provides a method for modular injection and centralized control of wellhead gas volume, referring to Figure 1 , Figure 1 The present invention is a flowchart of a method for modularized gas injection and centralized control of a wellhead gas volume according to an embodiment of the present invention. The method for modularized gas injection and centralized control of a wellhead gas volume comprises the following steps: S1: 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; S2: 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; S3: Based on the compressor unit resource information and the gas injection demand of each construction wellhead in each gas injection cycle during 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; S4: Sending the modular scheduling strategy to the scheduling terminal configured by the wellhead gas injection scheduling personnel, driving 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 constructing the sub-injection and centralized control combination architecture of each compressor unit in each gas injection cycle; S5: 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.

[0020] 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 demand for changing gas injection volume to adapt to the market or production plan for regulating gas well production). Under such requirements, the gas injection process of each wellhead usually needs to be equipped with corresponding gas injection equipment and control cabinets to achieve independent control of each wellhead in each gas injection cycle. However, in areas with densely populated oil and gas fields, the number of wellheads is relatively large. If each wellhead is equipped with independent gas injection equipment, not only will the layout of the gas injection transmission pipelines in the oil and gas field exploitation area be chaotic, increasing the difficulty of managing the decentralized gas injection control on the wellhead side, but the independent use of gas injection equipment will also make the exploitation cost very high. At the same time, since the gas injection volume during the wellhead gas injection process will vary with demand, the fixed matching mode of the wellhead, gas injection transmission pipeline and gas injection equipment will result in low utilization of the wellhead gas injection hardware resources (i.e., gas injection transmission pipeline and gas injection equipment). Under the premise that the wellhead gas injection hardware resources are limited, the production efficiency of oil and gas field exploitation is seriously affected.

[0021] In order to solve the above problems, this embodiment obtains the wellhead gas injection demand information of the target construction area and the resource information of the gas injection skid module to be called and the resource information of the compressor unit. 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, the moving distance of the gas injection transmission pipeline unit scheduling action executing the gas injection skid module resource information between any two compressor units is considered, and 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 as constraints. The moving distance of the gas injection transmission pipeline unit scheduling within the target construction period is The optimization goal is to minimize the total deviation, and the wellhead injection control strategy of each compressor unit for several construction wellheads in each gas injection cycle is optimized. Then, based on the wellhead injection control strategy and the gas injection skid module resource information, the modular scheduling strategy of the gas injection skid for several construction wellheads of each compressor unit in each gas injection cycle is determined. The modular scheduling strategy of the gas injection skid is used to drive the wellhead gas injection scheduling personnel 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 injection control strategy is used to drive the control cabinet terminal to execute the injection control action for each construction wellhead in each gas injection cycle.

[0022] Therefore, this embodiment uses a gas injection skid to modularly schedule and combine the gas injection transmission pipeline unit connecting the construction wellhead and the compressor unit, and uses the control cabinet terminal configured on the gas injection skid to realize the gas injection control for each construction wellhead connected to the gas injection skid. At the same time, under the premise of meeting the usage restrictions of the gas injection skid module resource information and the compressor unit resource information, the modular scheduling and combination efficiency of each gas injection cycle is improved as much as possible, and the production delay caused by the reorganization of the gas injection skid is minimized, which can meet the production application of any wellhead number and gas injection demand, 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 densely populated oil and gas fields, reduce the difficulty of gas injection control management and mining costs, and improve the production efficiency of oil and gas field mining.

[0023] In a preferred embodiment, the step of obtaining the wellhead gas injection demand information of the target construction area specifically includes: S11: 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; S12: calling the construction area map, extracting several target construction wellheads in the target construction area, matching the gas injection volume demand values ​​corresponding to the wellhead identification information of the several target construction wellheads in the wellhead gas injection demand task library, and generating the wellhead gas injection demand information of the target construction area.

[0024] In this embodiment, by obtaining several wellhead gas injection demand tasks uploaded by the wellhead gas injection construction management terminal, the gas injection volume demand value of the construction wellhead in the wellhead gas injection demand task for each gas injection cycle during the target construction period is extracted, and then by calling the construction area, the wellhead gas injection demand information of the target construction area is generated.

[0025] In a preferred embodiment, 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: S21: 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; S22: 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 the compressor group with the current usage status information being idle are used as the gas injection skid module resource information and the compressor group resource information to be called.

[0026] In this embodiment, by accessing the wellhead gas injection resource library, the current usage status information of each gas injection transmission pipeline unit and each compressor group recorded in the wellhead gas injection resource library is extracted, and the idle gas injection transmission pipeline units and compressor groups are used as the gas injection skid module resource information and compressor group resource information to be called.

[0027] In a preferred embodiment, based on the compressor unit resource information and the gas injection demand of each construction wellhead in each gas injection cycle during the target construction period, a wellhead injection control strategy step is generated between each compressor unit and a plurality of construction wellheads, specifically including: S31: extracting 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 calculating 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; S32: Generate a wellhead injection control strategy between each compressor group and several construction wellheads based on the gas injection demand of each construction wellhead in each gas injection cycle during 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 executing the gas injection skid module resource information between any two compressor groups.

[0028] Furthermore, according to the gas injection demand of each construction wellhead in each gas injection cycle during 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, which specifically include: S321: considering 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 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 groups in the compressor group resource information; S322: 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 that perform the gas injection task in each gas injection cycle is less than the number of idle compressor groups in the compressor group resource information as the first constraint condition; 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 as the second constraint condition; The sum of the moving distances of the compressor groups corresponding to two adjacent gas injection cycles in each construction wellhead performing the gas injection task in the target construction period is minimized as the optimization target, and 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 are optimized; S323: Based on the compressor group assigned to each construction wellhead for performing 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 gas injection volume distribution control between each compressor group and several construction wellheads.

[0029] On this basis, the wellhead injection control strategy and the gas injection skid module resource information are used to determine the gas injection skid modular scheduling strategy steps for each compressor unit for several construction wellheads in each gas injection cycle, specifically including: S33: 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 first layout position to the compressor group connected to the second 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; S34: 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; S35: Determine the modular scheduling strategy of the gas injection skid for each compressor unit for a plurality of construction wellheads in each gas injection cycle based on the modular initial scheduling strategy of the gas injection skid and the modular subsequent scheduling strategy of the gas injection skid.

[0030] 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 to be called and the resource information of the compressor unit, 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, the moving distance of the gas injection transmission pipeline unit scheduling action executing the gas injection skid module resource information between any two compressor units is considered, with the gas injection demand meeting the maximum gas output and the number of compressor units in use being less than the number of idle compressor units as constraints, and the minimum total moving distance of the gas injection transmission pipeline unit scheduling within the target construction period as the optimization goal, the wellhead injection control strategy of each compressor unit for several construction wellheads in each gas injection cycle is optimized, and based on the wellhead injection control strategy and the gas injection skid module resource information, the gas injection skid modular scheduling strategy of each compressor unit for several construction wellheads in each gas injection cycle is determined.

[0031] In a preferred embodiment, the modular scheduling strategy is sent to the scheduling terminal configured by the wellhead gas injection scheduling personnel, driving the wellhead gas injection scheduling personnel 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 sub-injection and centralized control combination architecture of each compressor unit in each gas injection cycle, specifically including: S41: Sending the modular scheduling strategy to a scheduling terminal configured by a wellhead gas injection scheduling personnel, driving 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 each construction wellhead in each gas injection cycle during the target construction period in the modular scheduling strategy; S42: 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 control cabinet terminal corresponding to the compressor group, and a combined architecture of distributed injection and centralized control of each compressor group in each gas injection cycle is constructed.

[0032] Furthermore, 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: S51: sending the wellhead injection control strategy 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; S52: 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.

[0033] In this embodiment, the modular scheduling strategy of the gas injection skid is used to drive the wellhead gas injection scheduling personnel 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 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 gas injection cycle. Therefore, the gas injection transmission pipeline unit connecting the construction wellhead and the compressor unit is modularly scheduled and combined by adopting the gas injection skid, and the control cabinet terminal configured on the gas injection skid is used to realize the gas injection sub-injection control for each construction wellhead connected to the gas injection skid. At the same time, under the premise of meeting the use restrictions of the gas 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, the production delay caused by the reorganization of the gas injection skid is minimized, the flexibility and precision of the multi-wellhead gas injection control of the oil and gas field with non-constant gas injection volume in the scenario of densely populated oil and gas fields are improved, the difficulty of gas injection control management and the mining cost are reduced, and the production efficiency of oil and gas field mining is improved.

[0034] In a preferred embodiment, the modular injection and centralized control method of wellhead gas volume also 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 modular scheduling strategy for the gas injection skid of each compressor unit for a number of construction wellheads in each gas injection cycle.

[0035] Reference Figure 2 , Figure 2 This is a structural schematic diagram of a modular gas injection and centralized control system for wellhead gas according to an embodiment of the present invention. The modular gas injection and centralized control system for wellhead gas comprises: The acquisition module 10 is used to acquire the 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; The access module 20 is used to access the 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 30 is used to generate a wellhead injection control strategy between each compressor unit and a number of construction wellheads 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, and to determine a gas injection skid modular scheduling strategy for each compressor unit for a number of 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 40 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 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 to construct a combined architecture of sub-injection and centralized control of each compressor unit in each gas injection cycle; The execution module 50 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.

[0036] Other embodiments or specific implementations of the modular wellhead gas injection and centralized control system of the present invention can refer to the above-mentioned method embodiments and will not be described in detail here.

[0037] It is understood that, in the description of this specification, the description with reference to the terms "one embodiment", "another embodiment", "other embodiments", or "first to Nth embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0038] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0039] The above are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also 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.

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: Based on the compressor unit resource information and the gas injection demand of each construction wellhead in each gas injection cycle during the target construction period, a wellhead injection control strategy step is generated between each compressor unit and a plurality of construction wellheads, specifically including: 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; 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 executing the gas injection skid module resource information between any two compressor groups, a wellhead injection control strategy between each compressor group and several construction wellheads is generated.

5. The method for modular injection and centralized control of wellhead gas volume according to claim 4, 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.

6. The method for modular injection and centralized control of wellhead gas volume according to claim 5, characterized in that: Using the wellhead injection control strategy and the gas injection skid module resource information, the steps of determining the gas injection skid modular scheduling strategy for each compressor unit for several construction wellheads in each gas injection cycle specifically include: Generate a gas injection skid modular initial scheduling strategy for each gas injection transmission pipeline unit, in which the compressor unit connected to the first layout position is transferred to the compressor unit connected to the second layout position, according to the first layout position of the compressor unit assigned to each construction wellhead in the first gas injection cycle within the target construction period and the second layout position of the compressor unit assigned to the compressor unit 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.

7. The method for modular injection and centralized control of wellhead gas volume according to claim 6, 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.

8. The method for modular injection and centralized control of wellhead gas volume according to claim 7, 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.

9. The method for modular injection and centralized control of wellhead gas volume according to claim 8, 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.

10. 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; The 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.

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