Associated gas continuous supply device
By designing a segmented tubular gas-liquid separation structure and an oil casing annulus structure, the problem of discontinuous associated gas supply at the well site was solved, achieving low-cost, continuous associated gas supply and reducing the size and operating cost of the equipment.
Patent Information
- Application Number
- CN202423192744.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-24
AI Technical Summary
The existing associated gas supply from the well site for the heating furnace is costly and discontinuous, resulting in large investment, large land area, and high operating costs.
The segmented tubular gas-liquid separation structure is adopted. Through the design of the main gas-liquid pipeline, liquid delivery pipeline and gas delivery pipeline, gas-liquid pre-separation and centrifugal separation are achieved. Combined with the oil jacket annular structure for gas storage, the associated gas is continuously supplied.
It achieves more thorough oil and gas separation, improves separation efficiency, and reduces equipment size and cost. It can be widely used in gathering and transportation systems and oil pulling processes, replacing wellhead or trunk line heaters, saving electricity and reducing operating costs.
Smart Images
Figure CN223869031U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the petroleum industry, and more particularly to a continuous associated gas supply device. Background Technology
[0002] In crude oil production, the continuous combustion and heat regulation of the heating furnace require a sufficient source of associated gas. Because the gas-liquid state of the well at the well site is intermittent, the uneven and discontinuous nature of the gas supply necessitates a large storage space.
[0003] Therefore, to ensure a stable gas supply to the heating furnace, large-volume vertical or horizontal separators are generally used for continuous gas supply. Due to their large size and high cost, vertical or horizontal separators are mostly used at sites with large liquid inflows to distribute gas to the heating furnace for combustion. The stable gas supply to the wellhead heating furnace is provided by the casing gas from the oil well. Wells without casing gas require the establishment of a vertical or horizontal separator gas distribution process, which involves large investment, large land area, large well site acquisition, and low investment returns. Therefore, electromagnetic heaters are generally used for them. Trunk heating furnaces require the construction of new gas pipelines from the large station to the trunk heating furnace location or the establishment of a vertical or horizontal separator gas distribution process. This also involves large investment, large land area, and low investment returns. Electromagnetic heaters are also generally used for them.
[0004] However, although electromagnetic heating is simple, it consumes a lot of electricity and has high operating costs; associated gas heating has a large heat supply and low operating costs, but requires a large investment and a large area. Utility Model Content
[0005] One of the purposes of this application is to provide a continuous associated gas supply device, which aims to solve the problem of high supply costs of associated gas sources required by existing heating furnaces at well sites.
[0006] The technical solution of this application is:
[0007] A continuous associated gas supply device includes a pipeline separation structure, a separation tank, and a gas storage structure; the pipeline separation structure is connected to one side of the separation tank via a gas outlet and a liquid outlet, respectively, for sending the separated gas and liquid into the separation tank along the tangential direction of the separation tank; the separation tank is connected to the gas storage structure for sending the separated gas into the gas storage structure for storage.
[0008] As one technical solution of this application, the pipeline separation structure includes a gas-liquid main pipeline, a liquid conveying pipeline, and a gas conveying pipeline; the outlet of the gas-liquid main pipeline is connected to the inlet of the liquid conveying pipeline and the inlet of the gas conveying pipeline, respectively, and the gas conveying pipeline is located above the liquid conveying pipeline; the outlet of the liquid conveying pipeline is connected to the middle of one side of the separation tank; the outlet of the gas conveying pipeline is connected to the upper part of one side of the separation tank.
[0009] As one technical solution of this application, the gas-liquid main pipeline includes a first gas-liquid conveying pipe and a second gas-liquid conveying pipe connected sequentially at an angle; the first gas-liquid conveying pipe is inclined upward in the direction toward the separation tank; the second gas-liquid conveying pipe is inclined downward in the direction toward the separation tank.
[0010] As one technical solution of this application, the liquid conveying pipeline and the gas conveying pipeline are connected by a plurality of spaced-apart connecting pipes.
[0011] As one technical solution of this application, the liquid conveying pipeline includes a first liquid conveying pipe, a second liquid conveying pipe, and a third liquid conveying pipe connected sequentially at an angle; the first liquid conveying pipe is connected to the second gas-liquid conveying pipe and is coaxially arranged with the second gas-liquid conveying pipe; the second liquid conveying pipe is inclined upward in the direction toward the separation tank; the third liquid conveying pipe is inclined downward in the direction toward the separation tank and is connected to the separation tank through a liquid outlet arranged tangentially along the outer wall of the separation tank.
[0012] As one technical solution of this application, the gas delivery pipeline includes a first gas delivery pipe, a second gas delivery pipe, a third gas delivery pipe, and a fourth gas delivery pipe connected sequentially at an angle; the first gas delivery pipe is connected at an angle to the second gas-liquid delivery pipe and is inclined upward in the direction toward the separation tank; the second gas delivery pipe is inclined downward in the direction toward the separation tank; the third gas delivery pipe is inclined upward in the direction toward the separation tank; the fourth gas delivery pipe is inclined downward in the direction toward the separation tank and is connected to the separation tank through a gas outlet tangentially arranged along the outer wall of the separation tank.
[0013] As one technical solution of this application, the separation tank includes a tank body; the tank body is provided with a liquid outlet pipe, a float that can move up and down, and an air outlet pipe from bottom to top; the bottom of the float is connected to a first connecting rod, and the first connecting rod is provided with a first connecting valve for opening or closing the liquid outlet pipe; the top of the float is connected to a second connecting rod, and the second connecting rod is provided with a second connecting valve for opening or closing the air outlet pipe; when the float moves upward to the point where the first connecting valve closes the air outlet pipe, the second connecting valve opens the liquid outlet pipe; when the float moves downward to the point where the second connecting valve closes the liquid outlet pipe, the first connecting valve opens the air outlet pipe.
[0014] As one technical solution of this application, a positioning structure is provided inside the tank body; the positioning structure includes a positioning rod, a support rod, multiple limiting rods, and multiple limiting rings; the positioning rod is vertically arranged inside the tank body, and its top end is fixedly connected to the top wall of the tank body; multiple support rods are spaced apart from bottom to top, and the two ends of each support rod are respectively connected to the positioning rod and the inner side wall of the tank body; multiple limiting rods are spaced apart from bottom to top, and their two ends are respectively connected to the positioning rod and the limiting rings; the limiting rings are respectively sleeved on the first connecting rod and the second connecting rod, which can move up and down.
[0015] As one technical solution of this application, the gas storage structure includes a gas transmission pipeline, a four-way valve, and an oil-jacketed annular structure; the two ends of the gas transmission pipeline are respectively connected to the gas outlet of the separation tank and one end of the four-way valve; the four-way valve is installed on the top of the oil-jacketed annular structure; the oil-jacketed annular structure is used to store the gas separated from the separation tank.
[0016] The beneficial effects of this application are:
[0017] In the associated gas continuous supply device of this application, a segmented pipe gas-liquid separation processing structure is adopted. The gas-liquid pre-separation is achieved by designing a slip-separation structure for the liquid conveying pipeline, thereby avoiding the impact of slug flow gas on the liquid. Furthermore, this centrifugal separation method utilizes an upper gas delivery pipeline and a lower liquid delivery pipeline that tangentially enter the separation tank to separate oil and gas. The upper pipeline contains more gas than liquid, so a slightly downward-sloping gas delivery pipeline with high centrifugal force is used for separation. The lower pipeline contains less gas, so a liquid delivery pipeline with lower centrifugal force and a larger downward angle is used for separation. Therefore, this device can separate oil and gas more thoroughly and improve separation efficiency. It also employs an annular structure for gas storage, utilizing the annular space to achieve continuous supply of associated gas, thus achieving low-cost gas separation and continuous gas supply. This significantly reduces the size and cost of the separation unit, making it widely applicable in gathering and transportation systems, including series connection processes and oil extraction processes. It can supply gas to replacement wellheads or trunk electric heater wellheads or trunk heating furnaces, saving electricity and reducing operating costs. In addition, the liquid level in the separation tank of this device is controlled by a float ball, which can reduce the cost of the entire device. Compared with existing gas-liquid separators, this device is smaller in size and occupies less space. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the associated gas continuous supply device provided in the embodiments of this application;
[0020] Figure 2 This is a schematic diagram showing the gas and liquid entering the separation tank tangentially, as provided in the embodiments of this application.
[0021] Icons: 1-First gas-liquid conveying pipe; 2-Second gas-liquid conveying pipe; 3-Connecting pipe; 4-First liquid conveying pipe; 5-Second liquid conveying pipe; 6-Third liquid conveying pipe; 7-First gas conveying pipe; 8-Second gas conveying pipe; 9-Third gas conveying pipe; 10-Fourth gas conveying pipe; 11-Tank body; 12-Liquid outlet pipe; 13-Float; 14-Gas outlet pipe; 15-First connecting rod; 16-First connecting valve; 17-Second connecting rod; 18-Second connecting valve; 19-Positioning rod; 20-Supporting rod; 21-Limiting rod; 22-Limiting ring; 23-Gas delivery pipe; 24-Four-way valve; 25-Oil jacket annular structure. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.
[0023] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0025] In the description of this application, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. They are only used to facilitate the description of this application and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0026] Furthermore, in this application, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Moreover, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0029] Example:
[0030] Please refer to Figure 1 This application provides a continuous associated gas supply device, which mainly includes a pipeline separation structure, a separation tank, and a gas storage structure. The pipeline separation structure is connected to one side of the separation tank through a gas outlet and a liquid outlet, respectively, for sending the separated gas and liquid into the separation tank along the tangential direction of the separation tank, and performing fine gas-liquid separation again in the separation tank. At the same time, the separation tank is connected to the gas storage structure for sending the separated gas into the gas storage structure for storage.
[0031] Furthermore, the pipeline separation structure includes a gas-liquid main pipeline, a liquid conveying pipeline, and a gas conveying pipeline; wherein, the outlet of the gas-liquid main pipeline is connected to the inlet of the liquid conveying pipeline and the inlet of the gas conveying pipeline, respectively, and the gas conveying pipeline is located above the liquid conveying pipeline; at the same time, the outlet of the liquid conveying pipeline is connected to the middle of one side of the separation tank; the outlet of the gas conveying pipeline is connected to the upper part of one side of the separation tank.
[0032] Specifically, in this embodiment, the gas-liquid main pipeline includes a first gas-liquid conveying pipe 1 and a second gas-liquid conveying pipe 2 connected at an angle in sequence; the first gas-liquid conveying pipe 1 is inclined upward in the direction toward the separation tank; the second gas-liquid conveying pipe 2 is inclined downward in the direction toward the separation tank.
[0033] Meanwhile, the liquid conveying pipeline includes a first liquid conveying pipe 4, a second liquid conveying pipe 5, and a third liquid conveying pipe 6 connected sequentially at an angle; the first liquid conveying pipe 4 is connected to the second gas-liquid conveying pipe 2 and is coaxially arranged with the second gas-liquid conveying pipe 2; the second liquid conveying pipe 5 is inclined upward in the direction toward the separation tank; the third liquid conveying pipe 6 is inclined downward in the direction toward the separation tank and is connected to the tank body 11 through its liquid outlet arranged tangentially along the outer wall of the separation tank.
[0034] Furthermore, the gas delivery pipeline includes a first gas delivery pipe 7, a second gas delivery pipe 8, a third gas delivery pipe 9, and a fourth gas delivery pipe 10 connected sequentially at an angle; wherein, the first gas delivery pipe 7 is connected at an angle to the second gas-liquid delivery pipe 2 and is inclined upward in the direction toward the separation tank; at the same time, the second gas delivery pipe 8 is horizontally arranged; furthermore, the third gas delivery pipe 9 is inclined upward in the direction toward the separation tank; the fourth gas delivery pipe 10 is inclined downward in the direction toward the separation tank and is connected to the separation tank through its outlet tangentially arranged along the outer wall of the separation tank.
[0035] Furthermore, a plurality of spaced-apart connecting pipes 3 connect the first liquid conveying pipe 4 and the second gas conveying pipe 8.
[0036] It employs a segmented tubular gas-liquid separation structure, using a slip-separation design in the liquid delivery pipeline to achieve pre-separation of gas and liquid, avoiding the impact of slug flow gas on the liquid. Furthermore, it utilizes a centrifugal separation structure where the upper gas delivery pipeline and the lower liquid delivery pipeline tangentially enter the separation tank for centrifugal separation of oil and gas. The upper pipeline contains more gas than liquid, therefore a slightly downward-sloping gas delivery pipeline with high centrifugal force is used for separation. The lower pipeline contains less gas, therefore a liquid delivery pipeline with lower centrifugal force and a larger downward angle is used for separation. In addition, the connection of multiple connecting pipes 3 increases the number of channels through which oil and gas flow, resulting in more thorough gas-liquid separation. Therefore, this device can achieve more thorough oil-gas separation and improve its efficiency.
[0037] Furthermore, the separation tank includes a tank body 11; wherein, from bottom to top, the tank body 11 is provided with a liquid outlet pipe 12, a float 13 that can move up and down, and an air outlet pipe 14, and the tank body 11 is also provided with a positioning structure, which includes a positioning rod 19, a support rod 20, multiple limiting rods 21, and multiple limiting rings 22; the bottom of the float 13 is connected to a first connecting rod 15, and the first connecting rod 15 is provided with a first connecting valve 16 for opening or closing the liquid outlet pipe 12; the top of the float 13 is connected to a second connecting rod 17, the second connecting rod... A second connecting valve 18 for opening or closing the vent pipe 14 is provided on 17; a positioning rod 19 is vertically installed inside the tank body 11, and its top end is fixedly connected to the flange at the top of the tank body 11; multiple support rods 20 are spaced apart from bottom to top, and the two ends of each support rod 20 are respectively connected to the positioning rod 19 and the inner side wall of the tank body 11; multiple limiting rods 21 are spaced apart from bottom to top, and their two ends are respectively connected to the positioning rod 19 and the limiting ring 22; the limiting ring 22 is respectively sleeved on the first connecting rod 15 and the second connecting rod 17, which can move up and down.
[0038] Therefore, when the float 13 moves upward to the point where the second connecting valve 18 closes the vent pipe 14, the first connecting valve 16 opens the liquid outlet pipe 12; when the float 13 moves downward to the point where the first connecting valve 16 closes the liquid outlet pipe 12, the second connecting valve 18 opens the vent pipe 14.
[0039] Meanwhile, the gas storage structure includes a gas transmission pipeline 23, a four-way valve 24, and an oil jacket annular structure 25. The two ends of the gas transmission pipeline 23 are connected to the gas outlet of the separator and one end of the four-way valve 24, respectively. In addition, the four-way valve 24 is installed on the top of the oil jacket annular structure 25. The oil jacket annular structure 25 is used to store the gas separated from the separator. The separated gas enters the annular cavity of the oil jacket annular structure 25 through the gas transmission pipeline 23 and the four-way valve 24 for storage, thereby realizing the continuous supply of associated gas and achieving low-cost gas separation and continuous gas supply.
[0040] In summary, the associated gas continuous supply device of this application adopts a segmented pipe gas-liquid separation processing structure. By designing a slip-separation structure of gas-liquid main pipeline, liquid delivery pipeline and gas delivery pipeline, gas-liquid pre-separation is achieved to avoid the impact of slug flow gas on liquid. Furthermore, this centrifugal separation structure, which uses an upper gas delivery pipeline and a lower liquid delivery pipeline tangentially entering the separation tank, separates oil and gas. The upper pipeline contains more gas than liquid, so a slightly downward-sloping gas delivery pipeline with high centrifugal force is used for separation. The lower pipeline contains less gas, so a liquid delivery pipeline with lower centrifugal force and a larger downward angle is used for separation. Therefore, this device can separate oil and gas more thoroughly and improve the efficiency of oil and gas separation. It also uses an annular structure 25 for gas storage, utilizing the annular space to achieve continuous supply of associated gas, thus achieving low-cost gas separation and continuous gas supply. This significantly reduces the size and cost of the separation device, making it widely applicable in gathering and transportation systems, including series connection processes and oil extraction processes, for supplying gas to replacement wellheads or trunk electric heater wellheads or trunk heating furnaces, thereby reducing operating costs. In addition, the liquid level in the separation tank of the device is controlled by a float ball 13, which can reduce the cost of the entire device. Compared with existing gas-liquid separators, the device is smaller in size and occupies less space.
[0041] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A continuous associated gas supply device, characterized in that, The system includes a pipeline separation structure, a separation tank, and a gas storage structure. The pipeline separation structure is connected to one side of the separation tank via a gas outlet and a liquid outlet, respectively, for conveying the separated gas and liquid into the separation tank along the tangential direction of the separation tank. The separation tank is connected to the gas storage structure for storing the separated gas. The pipeline separation structure includes a main gas-liquid pipeline, a liquid conveying pipeline, and a gas conveying pipeline. The outlet of the main gas-liquid pipeline is connected to the inlet of the liquid conveying pipeline and the inlet of the gas conveying pipeline, respectively. The separation tank is located above the liquid delivery pipeline; the outlet of the liquid delivery pipeline is connected to the middle of one side of the separation tank; the outlet of the gas delivery pipeline is connected to the upper part of one side of the separation tank; the separation tank includes a tank body; the tank body is provided with a liquid outlet pipe, a float that can move up and down, and a gas outlet pipe arranged sequentially from bottom to top; the bottom of the float is connected to a first connecting rod, and the first connecting rod is provided with a first connecting valve for opening or closing the liquid outlet pipe; the top of the float is connected to a second connecting rod, and the second connecting rod is provided with a second connecting valve for opening or closing the gas outlet pipe; When the float moves upward to the point where the first connecting valve closes the vent pipe, the second connecting valve opens the liquid outlet pipe; when the float moves downward to the point where the second connecting valve closes the liquid outlet pipe, the first connecting valve opens the vent pipe.
2. The associated gas continuous supply device according to claim 1, characterized in that, The main gas-liquid pipeline includes a first gas-liquid conveying pipe and a second gas-liquid conveying pipe connected at an angle in sequence; the first gas-liquid conveying pipe is inclined upward in the direction toward the separation tank; the second gas-liquid conveying pipe is inclined downward in the direction toward the separation tank.
3. The associated gas continuous supply device according to claim 1, characterized in that, The liquid delivery pipeline and the gas delivery pipeline are connected by multiple intermittently arranged connecting pipes.
4. The associated gas continuous supply device according to claim 2, characterized in that, The liquid delivery pipeline includes a first liquid delivery pipe, a second liquid delivery pipe, and a third liquid delivery pipe connected sequentially at an angle; the first liquid delivery pipe is connected to the second gas-liquid delivery pipe and is coaxially arranged with the second gas-liquid delivery pipe; the second liquid delivery pipe is inclined upward in the direction toward the separation tank; the third liquid delivery pipe is inclined downward in the direction toward the separation tank and is connected to the separation tank through a liquid outlet arranged tangentially along the outer wall of the separation tank.
5. The associated gas continuous supply device according to claim 2, characterized in that, The gas delivery pipeline includes a first gas delivery pipe, a second gas delivery pipe, a third gas delivery pipe, and a fourth gas delivery pipe connected sequentially at an angle; the first gas delivery pipe is connected at an angle to the second gas-liquid delivery pipe and is inclined upwards in the direction toward the separation tank; the second gas delivery pipe is horizontally arranged; the third gas delivery pipe is inclined upwards in the direction toward the separation tank; the fourth gas delivery pipe is inclined downwards in the direction toward the separation tank and is connected to the separation tank through a gas outlet tangentially arranged along the outer wall of the separation tank.
6. The associated gas continuous supply device according to claim 1, characterized in that, The tank body is provided with a positioning structure; the positioning structure includes a positioning rod, a support rod, multiple limiting rods, and multiple limiting rings; the positioning rod is vertically arranged in the tank body, and its top end is fixedly connected to the top wall of the tank body; the multiple support rods are spaced apart from bottom to top, and the two ends of each support rod are respectively connected to the positioning rod and the inner side wall of the tank body; the multiple limiting rods are spaced apart from bottom to top, and their two ends are respectively connected to the positioning rod and the limiting rings; the limiting rings are respectively sleeved on the first connecting rod and the second connecting rod, which can move up and down.
7. The associated gas continuous supply device according to claim 1, characterized in that, The gas storage structure includes a gas transmission pipeline, a four-way valve, and an oil-jacketed annular structure; the two ends of the gas transmission pipeline are respectively connected to the gas outlet of the separation tank and one end of the four-way valve; the four-way valve is installed on the top of the oil-jacketed annular structure; the oil-jacketed annular structure is used to store the gas separated from the separation tank.