Cyclone desander pressure relief device and gas well production system thereof
By adding pressure relief pipes and valves to the cyclone sand degasser, independent pressure relief of gases inside the sand degasser is achieved, and the problems of low pressure relief efficiency and environmental pollution in the prior art are solved, and the pressure relief efficiency and operational safety are improved.
Patent Information
- Application Number
- CN202421822122.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing cyclone sand degasser is affected by sand discharge during the pressure relief process, which has low pressure relief efficiency, and the exhausted gas is prone to environmental pollution.
A cyclone sand degasser pressure relief device is designed. By adding a pressure relief pipe on the sand degasser and setting a valve to control the flow on and off on the pressure relief pipe, independent pressure relief of the gas inside the sand degasser is achieved, and the pressure relief process is avoided from being affected by sand discharge.
It improves pressure relief efficiency, avoids environmental pollution caused by gas leakage, and improves the operation safety of sand detergent.
Smart Images
Figure CN222810789U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas production technology in oil and gas fields, in particular to a cyclone desander pressure relief device and a gas well production system thereof. Background Art
[0002] Compared with conventional fracturing, the volume fracturing process requires a significant increase in the amount of fluid and sand added to the ground. Therefore, in the early stages of production of volume fracturing wells, sand production is severe, and surface process equipment and pipelines are frequently punctured. In order to purify the formation sand, fracturing sand, cuttings and other solid particles in the bottom flowback fluid and protect downstream equipment from erosion, a high-pressure cyclone desander is used as the wellhead sand removal device. The cyclone desander needs to be discharged after a period of use. Before discharging sand, the internal pressure needs to be relieved. Generally, the pressure is relieved using its own sand discharge pipeline. The pressure relief process is affected by the sand discharge, and the pressure relief efficiency is low. In addition, the discharged gas enters the sand collecting pool, which is difficult to control and easily causes environmental pollution.
[0003] Therefore, a technical solution is currently needed to solve the technical problem that the desander uses its own sand discharge pipe to release pressure, the pressure relief process is affected by the sand discharge, the pressure relief efficiency is low and it is easy to cause environmental pollution. Utility Model Content
[0004] The utility model aims to overcome the technical problems that the desander utilizes its own sand discharge pipe to release pressure, the pressure relief process is affected by the sand discharge, the pressure relief efficiency is low and it is easy to cause environmental pollution, and provides a cyclone desander pressure relief device and a gas well production system thereof.
[0005] In a first aspect, the utility model provides a cyclone desander pressure relief device, comprising a desander body, the desander body being connected to an air inlet pipe and an exhaust pipe, the exhaust pipe being connected to a pressure relief pipe, the pressure relief pipe being used to connect to a vent main pipe, and the pressure relief pipe being connected to a first valve.
[0006] The utility model discloses a cyclone desander pressure relief device. When in use, the air inlet pipe of the desander body is connected with the gas well pipeline, and the exhaust pipe is connected with the downstream pipeline of the gas well pipeline. The gas from the wellhead enters the desander body through the air inlet pipe. After the natural gas produces sand in the desander body, the natural gas enters the downstream pipeline through the exhaust pipe. When the desander body needs to be sanded, the first valve on the pressure relief pipe is opened to discharge the internal gas of the desander into the venting main pipe, thereby realizing the internal pressure relief of the desander body. The pressure relief process is not affected by the sand discharge, thereby improving the pressure relief efficiency. At the same time, the discharged gas can enter the venting main pipe through the pressure relief pipe to avoid pollution.
[0007] Preferably, the air inlet pipe is connected to a second valve, the air outlet pipe is connected to a third valve, and the pressure relief pipe is connected between the third valve and the desander body.
[0008] The third valve and the fourth valve can block the air intake and exhaust of the desander body, preventing the natural gas from continuously entering the desander body during the pressure relief process, thereby avoiding the waste of natural gas and also improving the completion speed of the pressure relief process.
[0009] Preferably, the pressure relief pipe is connected to a pressure gauge.
[0010] The pressure gauge can monitor the internal air pressure of the desander body in real time, which is convenient for the pressure relief process when the gas inside the desander body is about to exceed the standard, thereby improving the safety of the desander operation process. At the same time, the pressure relief process can be terminated in time after the pressure relief meets the standard, so as to quickly restore the normal production of the gas well.
[0011] Preferably, the pressure relief pipe is connected with a throttle valve, and the throttle valve is arranged on a side of the first valve away from the desander body.
[0012] The throttle valve can control the speed of pressure relief, improve the safety of the pressure relief process, and prevent the pressure relief process from causing excessive impact on the vent main.
[0013] Preferably, a controller is further included, and the first valve, the second valve, the third valve, the pressure gauge and the throttle valve are all electrically connected to the controller.
[0014] It is convenient to remotely control the pressure relief of the desander. In the normal production process, the controller controls the first valve to close, the second valve and the third valve to open, and the natural gas enters the desander body to be transported to the downstream pipeline after the sand is discharged. When the desander body needs to be discharged, the controller controls the second valve and the third valve to close, and controls the first valve to open, and adjusts the throttle valve opening to discharge the gas inside the desander body into the venting main pipe.
[0015] Preferably, the first valve, the second valve and the third valve are all electric ball valves.
[0016] The electric ball valve used facilitates the electrical connection between the first valve, the second valve, the third valve and the controller to achieve remote control of each valve. At the same time, the electric ball valve has excellent sealing performance and is used in the natural gas production process to reduce natural gas leakage and improve the safety of natural gas production.
[0017] In a second aspect, the utility model provides a gas well production system, including a gas well pipeline, to which the above-mentioned cyclone desander pressure relief device is connected.
[0018] The utility model discloses a gas well production system. When in use, gas from a wellhead enters a desander body through an air inlet pipe. After the natural gas produces sand in the desander body, the natural gas enters a downstream pipeline through an exhaust pipe. When the desander body needs to be desandered, a first valve on a pressure relief pipe is opened to discharge the internal gas of the desander into a venting main pipe, thereby achieving pressure relief inside the desander body. The pressure relief process is not affected by sand discharge, thereby improving the pressure relief efficiency. At the same time, the discharged gas can enter the venting main pipe through the pressure relief pipe to avoid pollution.
[0019] Preferably, the gas well pipeline is connected to a fourth valve, and the air inlet pipe and the air outlet pipe are respectively connected to two sides of the fourth valve.
[0020] During normal production, natural gas enters the desander body through the air inlet pipe, and then enters the vent main pipe through the exhaust pipe. When the internal pressure of the desander body is too high and needs to be relieved, the fourth valve can be opened, and the gas from the wellhead directly enters the downstream pipeline without passing through the desander body, so that the gas well can produce normally during the pressure relief process.
[0021] Preferably, the fourth valve is electrically connected to the controller.
[0022] The controller can conveniently remotely control the fourth valve, so that the desander pressure relief process and the sand production process can be quickly switched to avoid interruptions in gas well production.
[0023] Preferably, the fourth valve is an electric ball valve.
[0024] The electric ball valve used facilitates the electrical connection between the fourth valve and the controller to realize remote control of the fourth valve. At the same time, the electric ball valve has excellent sealing performance and is used in the natural gas production process to reduce natural gas leakage and improve the safety of natural gas production.
[0025] Compared with the prior art, the utility model has the following beneficial effects:
[0026] The present application adds a pressure relief pipe to the desander and sets a valve on the pressure relief pipe to control the flow of fluid. When the desander body needs to be discharged from the sand, the valve can be opened to discharge the internal gas of the desander into the vent main pipe through the pressure relief pipe, thereby avoiding the influence of the sand discharge process on the pressure relief, improving the pressure relief efficiency, and avoiding environmental pollution caused by gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 The utility model is a structural schematic diagram of a cyclone desander pressure relief device.
[0028] Figure 2 The utility model is a structural schematic diagram of a gas well production system.
[0029] Markings in the figure:
[0030] 1- desander body, 2- air inlet pipe, 3- exhaust pipe, 4- pressure relief pipe, 5- first valve, 6- second valve, 7- third valve, 8- pressure gauge, 9- throttle valve, 10- controller, 11- gas well pipeline, 12- fourth valve. DETAILED DESCRIPTION
[0031] The present invention is further described in detail below in conjunction with specific embodiments. However, this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.
[0032] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the product / equipment / device of the utility model is usually used. These terms of orientation or position relationship are only for the convenience of describing the scheme of the utility model or simplifying the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation on the present utility model.
[0033] In addition, if the terms "horizontal", "vertical", "overhanging", "parallel" and the like appear, it does not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or overhanging or parallel, but may be slightly tilted or have deviations. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but may be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in directions such as "horizontal", "vertical", "overhanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding devices / components / elements are within the error / deviation range, they can still achieve their functions in the solution of the utility model.
[0034] In addition, the expressions “first”, “second”, “third”, etc., which appear in the terms, are merely used to distinguish the description of the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.
[0035] In addition, in the description of the embodiments of the present invention, "several", "multiple" and "a number" represent at least 2. It can be any number such as 2, 3, 4, 5, 6, 7, 8, 9, and even more than 9.
[0036] In addition, in the description of the technical solution of the utility model, unless otherwise clearly specified / defined / restricted, the terms "set", "install", "connect", "connected", "provided with", "laid", and "arranged" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, and can be welding, riveting, bolting, threading, and other commonly used connection means in the field. This connection can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or an indirect connection through an intermediate medium, and it can be the internal communication of two components.
[0037] Example 1
[0038] like Figure 1 and Figure 2 As shown, a cyclone desander pressure relief device comprises a desander body, wherein the desander body 1 is connected with an air inlet pipe 2 and an exhaust pipe 3, the air inlet pipe 2 is connected with a second valve 6, the second valve 6 can block the wellhead gas from entering the desander body 1, the exhaust pipe 3 is connected with a third valve 7, the exhaust pipe 3 is connected with a pressure relief pipe 4, the pressure relief pipe 4 is used to connect to the venting main pipe, and the pressure relief pipe 4 is connected with a first valve 5.
[0039] When in use, the air inlet pipe 2 of the desander body 1 is connected to the gas well pipeline, and the exhaust pipe 3 is connected to the downstream pipeline of the gas well pipeline. The gas from the wellhead enters the desander body 1 through the air inlet pipe 2. After the natural gas is sanded in the desander body 1, it enters the downstream pipeline through the exhaust pipe 3. When the desander body 1 needs to be sanded, the first valve 5 on the pressure relief pipe 4 is opened to discharge the internal gas of the desander into the venting main pipe, thereby realizing the internal pressure relief of the desander body 1. The pressure relief process is not affected by the sand discharge, thereby improving the pressure relief efficiency. At the same time, the discharged gas can enter the venting main pipe through the pressure relief pipe 4 to avoid pollution.
[0040] Pressure relief pipe 4: A pressure gauge 8 is also provided on the pressure relief pipe 4, which can monitor the internal air pressure of the desander body 1 in real time, facilitate the pressure relief process when the gas inside the desander body 1 exceeds the standard, and improve the safety of the desander operation process. At the same time, the pressure relief process can be terminated in time after the pressure relief meets the standard, so as to quickly restore the normal production of the gas well; a throttle valve 9 is provided on the pressure relief pipe 4, and the throttle valve 9 is arranged on the side of the first valve 5 away from the desander body 1, which can control the speed of pressure relief, improve the safety of the pressure relief process, and avoid excessive impact on the venting main pipe during the pressure relief process.
[0041] Example 2
[0042] like Figure 1 As shown, in this embodiment, the difference from Embodiment 1 is that it also includes a controller 10, and the first valve 5, the second valve 6, the third valve 7, the pressure gauge 8 and the throttle valve 9 are all electrically connected to the controller 10. The controller 10 is a PLC controller, and the preferred model is: S7-200PLC.
[0043] In this embodiment, the desander pressure relief can be remotely controlled. In the normal production process, the controller 10 controls the first valve 5 to close, the second valve 6 and the third valve 7 to open, and the natural gas enters the desander body 1 to remove sand and is then transported to the downstream pipeline. When the desander body 1 needs to be discharged from the sand, the controller 10 controls the second valve 6 and the third valve 7 to close, and at the same time controls the first valve 5 to open, and adjusts the opening of the throttle valve 9 to discharge the gas inside the desander body 1 into the venting main pipe.
[0044] Furthermore, the first valve 5, the second valve 6 and the third valve 7 are all electric ball valves. The electric ball valves used facilitate electrical connection between the first valve 5, the second valve 6, the third valve 7 and the controller 10 to achieve remote control of each valve. At the same time, the electric ball valves have excellent sealing properties and are used in the natural gas production process to reduce natural gas leakage and improve the safety of natural gas production.
[0045] Example 3
[0046] like Figure 1 and Figure 2 As shown, this embodiment provides a gas well production system, including a gas well pipeline 11, to which the above-mentioned cyclone desander pressure relief device is connected.
[0047] During use, the gas from the wellhead enters the desander body 1 through the air inlet pipe 2. After the natural gas is sanded out of the desander body 1, it enters the downstream pipeline through the exhaust pipe 3. When the desander body 1 needs to be sanded, the first valve 5 on the pressure relief pipe 4 is opened to discharge the internal gas of the desander into the venting main pipe, thereby achieving internal pressure relief of the desander body 1. The pressure relief process is not affected by the sand discharge, thereby improving the pressure relief efficiency. At the same time, the discharged gas can enter the venting main pipe through the pressure relief pipe to avoid pollution.
[0048] Gas well pipeline 11: A fourth valve 12 is connected to the gas well pipeline 11, and the air inlet pipe 2 and the exhaust pipe 3 are respectively connected to both sides of the fourth valve 12. During normal production, natural gas enters the desander body 1 through the air inlet pipe 2, and then enters the venting main pipe through the exhaust pipe 3. When the internal pressure of the desander body 1 is too high and needs to be relieved, the fourth valve 12 can be opened, and the gas from the wellhead directly enters the downstream pipeline without passing through the desander body 1, so that the gas well can be produced normally during the pressure relief process; further, the fourth valve 12 is electrically connected to the controller 10, which facilitates the controller 10 to remotely control the fourth valve 12, so that the desander pressure relief process and the sand production process can be quickly switched to avoid interruptions in gas well production; further, the fourth valve 12 is an electric ball valve, and the electric ball valve used facilitates the electrical connection of the fourth valve 12 with the controller 10 to achieve remote control of the fourth valve 12. At the same time, the electric ball valve has excellent sealing performance and is used in the natural gas production process to reduce natural gas leakage and improve the safety of natural gas production.
[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A cyclone desander pressure relief device, characterized in that: The desander body (1) is connected to an air inlet pipe (2) and an exhaust pipe (3), the exhaust pipe (3) is connected to a pressure relief pipe (4), the pressure relief pipe (4) is used to connect to a venting main pipe, and the pressure relief pipe (4) is connected to a first valve (5).
2. A cyclone desander pressure relief device according to claim 1, characterized in that: The air inlet pipe (2) is connected to a second valve (6), the air outlet pipe (3) is connected to a third valve (7), and the pressure relief pipe (4) is connected between the third valve (7) and the desander body (1).
3. A cyclone desander pressure relief device according to claim 2, characterized in that: The pressure relief pipe (4) is connected to a pressure gauge (8).
4. A cyclone desander pressure relief device according to claim 3, characterized in that: The pressure relief pipe (4) is connected to a throttle valve (9), and the throttle valve (9) is arranged on a side of the first valve (5) away from the desander body (1).
5. A cyclone desander pressure relief device according to claim 4, characterized in that: It also includes a controller (10), and the first valve (5), the second valve (6), the third valve (7), the pressure gauge (8) and the throttle valve (9) are all electrically connected to the controller (10).
6. A cyclone desander pressure relief device according to claim 5, characterized in that: The first valve (5), the second valve (6) and the third valve (7) are all electric ball valves.
7. A gas well production system, comprising a gas well pipeline (11), characterized in that: The gas well pipeline (11) is connected to a cyclone desander pressure relief device as claimed in any one of claims 5 to 6.
8. A gas well production system according to claim 7, characterized in that: The gas well pipeline (11) is connected to a fourth valve (12), and the air inlet pipe (2) and the air outlet pipe (3) are respectively connected to two sides of the fourth valve (12).
9. A gas well production system according to claim 8, characterized in that: The fourth valve (12) is electrically connected to the controller (10).
10. A gas well production system according to claim 9, characterized in that: The fourth valve (12) is an electric ball valve.