CN216841598U - Horizontal well integrated negative pressure gas production system - Google Patents
Horizontal well integrated negative pressure gas production system Download PDFInfo
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- CN216841598U CN216841598U CN202220723757.3U CN202220723757U CN216841598U CN 216841598 U CN216841598 U CN 216841598U CN 202220723757 U CN202220723757 U CN 202220723757U CN 216841598 U CN216841598 U CN 216841598U
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Abstract
The utility model relates to the technical field of natural gas exploitation, and discloses a horizontal well integrated negative pressure gas production system, which comprises a gas production tree, wherein the gas production tree is communicated with a foam discharging agent filling mechanism, a discharge port of the gas production tree is communicated with an electromagnetic liquid flowmeter, the electromagnetic liquid flowmeter is communicated with a gas-liquid separation tank, a liquid outlet pipeline is communicated with an automatic defoaming balance tank, the gas-liquid separation tank is provided with a gas exhaust pipe and a water drain pipe, the gas exhaust pipe is communicated with a compressor, an outlet of the compressor is communicated with an outer gas transmission pipe, and the outer gas transmission pipe and the water drain pipe are communicated with a mixed transmission pipeline; the top of the automatic defoaming balancing tank is communicated with a switch valve, the bottom of the automatic defoaming balancing tank is communicated with a first electromagnetic valve, and the outlet end of the first electromagnetic valve is communicated with a liquid outlet pipeline; the electromagnetic liquid flowmeter and the first electromagnetic valve are electrically connected with a computer controller. The utility model discloses can be according to from the gas recovery well outflow contain water the foam how much, add the defoaming agent in the automatic drain pipe line to containing water foam, unnecessary artificial addition reduces the cost of labor.
Description
Technical Field
The utility model relates to a natural gas exploitation technical field especially relates to a horizontal well integration negative pressure gas production system.
Background
After years of development of gas fields, stratum energy is reduced year by year, low-pressure gas wells are increased year by year, and part of horizontal gas wells show the characteristics of low pressure and low yield during production.
At present, foam-drainage and gas lift process technologies are widely adopted at home and abroad to solve the problem of low-pressure low-yield shaft effusion of a water-containing gas reservoir; the foam discharging gas production process is taken as an example, a certain amount of foaming agent is injected into a gas production well, after accumulated water at the bottom of the well contacts with the foaming agent, a large amount of low-density water-containing foam is generated by stirring of natural gas flow and is carried to the ground along with the gas flow from the bottom of the well, and the purpose of removing accumulated water at the bottom of the well is achieved. After the aqueous foam is carried to the ground, in order to prevent the foam from being brought into ground process equipment (such as a compressor), which causes the service life of the ground process equipment to be shortened, the failure rate to be increased and normal production to be affected, a defoaming agent is generally required to be injected into the aqueous foam before the aqueous foam enters the equipment, and the foam is removed.
However, in the injection link of the defoaming agent, manual injection is mostly adopted according to the amount of water-containing foam, so that the automation degree of the whole gas production system is low, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing a horizontal well integration negative pressure gas production system can be according to how much the hydrous foam that flows out from the gas recovery well, and the automatic defoaming agent that adds in to the drain line of hydrous foam, unnecessary artificial addition reduces the cost of labor.
The utility model discloses an above-mentioned technical problem is solved to following technical means:
an integrated negative-pressure gas production system of a horizontal well comprises a gas production tree, wherein a foaming and discharging agent filling mechanism is communicated with a filling port of the gas production tree, an electromagnetic liquid flowmeter is communicated with a discharge port of the gas production tree, the electromagnetic liquid flowmeter is communicated with a gas-liquid separation tank through a liquid outlet pipeline, an automatic defoaming balance tank is communicated with the liquid outlet pipeline, an exhaust pipe and a drain pipe are arranged on the gas-liquid separation tank, the exhaust pipe is communicated with a compressor, an outlet of the compressor is communicated with an outer gas conveying pipe, and the outer gas conveying pipe and the drain pipe are communicated with a same mixed conveying pipeline; the top of the automatic defoaming balancing tank is fixedly communicated with a switch valve, the bottom of the automatic defoaming balancing tank is fixedly communicated with a first electromagnetic valve, and the outlet end of the first electromagnetic valve is communicated with a liquid outlet pipeline; the electromagnetic liquid flowmeter and the first electromagnetic valve are electrically connected with the same computer controller.
Further, a transverse partition plate is arranged in the gas-liquid separation tank, the gas-liquid separation tank is divided into an upper gas tank and a lower liquid tank by the partition plate, the liquid outlet pipeline is communicated with the gas tank, the exhaust pipe is communicated between the gas tank and the compressor, a water flowing pipe is communicated between the bottom of the gas tank and the top of the liquid tank, and a one-way valve is arranged on the water flowing pipe. Gas-liquid mixture from a wellhead enters a gas tank, the gas enters a compressor through an exhaust pipe, and enters a mixed transportation pipeline after being compressed by the compressor, so that the wellhead pressure is reduced, negative pressure is formed relative to a shaft, effusion in the shaft is favorably discharged, and the natural gas recovery ratio of a gas well is improved; the liquid flows into the liquid tank from the water flowing pipe through the one-way valve and flows into the mixing pipeline through the drain pipe, the gas-liquid mixture is mixed and conveyed to the external gas collecting station through the mixing pipeline, and gas-liquid separation is carried out by the gas collecting station.
Further, a balance pipe is communicated between the top of the gas tank and the middle of the liquid tank, and a first liquid level sensor and a second electromagnetic valve are arranged at the joint of the balance pipe and the liquid tank; and the first liquid level sensor and the second electromagnetic valve are electrically connected with the computer controller. If the pressure in the mixed transportation pipeline is large, the liquid in the liquid tank is large, but the pressure of the liquid tank cannot press the liquid into the mixed transportation pipeline, at the moment, the first liquid level sensor detects that the liquid level is high, the second electromagnetic valve is controlled to be opened by the computer controller, the gas tank and the liquid tank are in a communicated state through the balance pipe, and the liquid in the liquid tank can be pressed into the mixed transportation pipeline by the gas pressure in the gas tank.
Further, the bottom of the liquid tank is provided with a second liquid level sensor and a third electromagnetic valve, the third electromagnetic valve is communicated with the mixed transportation pipeline through a drain pipe, and the second liquid level sensor and the third electromagnetic valve are both electrically connected with the computer controller. If the liquid level in the liquid tank is very low, the second liquid level sensor detects that the liquid level is at the bottom position of the liquid tank, the third electromagnetic valve is closed under the control of the computer controller, and the gas-liquid mixture in the mixed transportation pipeline is prevented from entering the liquid tank through the drain pipe.
Further, the top of the liquid tank is communicated with a third liquid level sensor and a fourth electromagnetic valve, the fourth electromagnetic valve is communicated with an outer gas transmission pipe through a connecting pipe, and the third liquid level sensor and the fourth electromagnetic valve are both electrically connected with the computer controller. When the air pressure in the air tank is low and the liquid in the liquid tank cannot or slowly be pressed into the mixing pipeline, the liquid level of the liquid in the liquid tank gradually rises, when the liquid rises to the third liquid level sensor positioned at the top, the computer controller controls the fourth electromagnetic valve to be opened, and the high-pressure gas compressed by the compressor is used for pressing the liquid in the liquid tank into the drain pipe and enters the mixing pipeline.
Further, the foam discharging agent filling mechanism is an automatic foam discharging rod feeding device or a foam discharging liquid filling pump. Therefore, the automatic foam discharging rod feeding device can be used for adding foam discharging rods into the gas well, or a foam discharging liquid feeding pump is used for adding foam discharging liquid into the gas well, and both the selection and the selection can be carried out.
Further, a cooling fan is arranged on the compressor. The cooling fan can cool the compressor, takes away the heat that the compressor produced at the compressed gas in-process, prolongs the life of compressor.
Further, the outer gas transmission pipe is communicated with a gas storage tank, the gas storage tank is communicated with a gas generator, and the gas generator is electrically connected with the computer controller, the foam discharging agent filling mechanism, the compressor and the cooling fan. Therefore, natural gas produced from the gas production well can be directly utilized, the power is supplied to the whole system through the power generation of the gas generator, and an external power supply is not needed.
The utility model has the advantages that:
1. the utility model discloses arrange the stick with the bubble and put in device or bubble flowing back filling pump automatically and install on gas production tree, pour into the bubble in to the well and arrange the medicament, after the contact of hydrops in the well and bubble row agent, with the help of the stirring of the natural gas flow in the well, generate the aqueous foam of a large amount of low density, the aqueous foam takes the discharge port to gas production tree along with the natural gas flow from the well. When the electromagnetic liquid flowmeter detects that liquid flows through, the signal is transmitted to the computer controller, the computer controller controls the first electromagnetic valve, the first electromagnetic valve is opened according to the flow rate of the liquid flowing through the electromagnetic liquid flowmeter, the defoaming agent in the automatic defoaming balancing tank flows into the liquid outlet pipeline through the first electromagnetic valve, and the water-containing foam in the liquid outlet pipeline is defoamed, so that the aims of automatically adding the defoaming agent into the liquid outlet pipeline of the water-containing foam, avoiding manual addition and reducing the labor cost are fulfilled.
2. The utility model discloses in the gas-liquid mixture body after the defoaming enters into the gas tank, gas then gets into the compressor through the blast pipe, gets into outer gas transmission pipe after by the compressor compression, then gets into the defeated pipeline that mixes again, reduces well head pressure, and relative pit shaft forms the negative pressure, does benefit to the hydrops discharge in the pit shaft to improve the natural gas recovery ratio of gas well.
Drawings
Fig. 1 is a schematic diagram of the integrated negative pressure gas production system of the horizontal well of the present invention;
fig. 2 is an enlarged view of a portion a of fig. 1.
The system comprises a gas production tree 1, an automatic foam discharging rod feeding device 2, a foam discharging liquid filling pump 3, an electromagnetic liquid flowmeter 4, a liquid outlet pipeline 5, a partition plate 6, a gas tank 7, a liquid tank 8, an automatic defoaming balance tank 9, a switching valve 10, a first electromagnetic valve 11, an exhaust pipe 12, a drain pipe 13, a compressor 14, a cooling fan 15, an external gas transmission pipe 16, a mixed transmission pipeline 17, a water flowing pipe 18, a one-way valve 19, a balance pipe 20, a first liquid level sensor 21, a second electromagnetic valve 22, a second liquid level sensor 23, a third electromagnetic valve 24, a third liquid level sensor 25, a fourth electromagnetic valve 26, a connecting pipe 27, a computer controller 28, a gas storage tank 29 and a gas generator 30.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings:
as shown in fig. 1 to 2: the integrated negative-pressure gas production system of the horizontal well comprises a gas production tree 1, wherein a filling port of the gas production tree 1 is communicated with a bubble discharge rod automatic feeding device 2 or a bubble liquid discharge filling pump 3, both the bubble discharge rod automatic feeding device 2 and the bubble liquid discharge filling pump 3 are in the prior art, a discharge port of the gas production tree 1 is communicated with an electromagnetic liquid flowmeter 4, the electromagnetic liquid flowmeter 4 is communicated with a gas-liquid separation tank through a liquid discharge pipeline 5, a transverse partition plate 6 is arranged in the gas-liquid separation tank, the gas-liquid separation tank is divided into an upper gas tank 7 and a lower liquid tank 8 by the partition plate 6, and the liquid discharge pipeline 5 is communicated with the upper part of the gas tank 7; an automatic defoaming balance tank 9 containing a defoaming agent is communicated with the liquid outlet pipeline 5, the top of the automatic defoaming balance tank 9 is fixedly communicated with a switch valve 10, the bottom of the automatic defoaming balance tank 9 is fixedly communicated with a first electromagnetic valve 11, and the outlet end of the first electromagnetic valve 11 is communicated with the liquid outlet pipeline 5; the gas tank 7 is communicated with an exhaust pipe 12, the bottom of the liquid tank 8 is communicated with a drain pipe 13, the exhaust pipe 12 is communicated with a compressor 14, the compressor 14 is provided with a cooling fan 15, the outlet of the compressor 14 is communicated with an outer gas conveying pipe 16, and the outer gas conveying pipe 16 and the drain pipe 13 are communicated with a same mixed conveying pipeline 17.
A water flowing pipe 18 is communicated between the bottom of the gas tank 7 and the top of the liquid tank 8, and a one-way valve 19 is arranged on the water flowing pipe 18; a balance pipe 20 is communicated between the top of the gas tank 7 and the middle of the liquid tank 8, and a first liquid level sensor 21 and a second electromagnetic valve 22 are arranged at the joint of the balance pipe 20 and the liquid tank 8; the bottom of the liquid tank 8 is provided with a second liquid level sensor 23 and a third electromagnetic valve 24, and the third electromagnetic valve 24 is communicated with the mixing pipeline 17 through a drain pipe 13; the top of the liquid tank 8 is communicated with a third liquid level sensor 25 and a fourth electromagnetic valve 26, and the fourth electromagnetic valve 26 is communicated with the external air delivery pipe 16 through a connecting pipe 27.
The electromagnetic liquid flow meter 4, the first electromagnetic valve 11, the first liquid level sensor 21, the second electromagnetic valve 22, the second liquid level sensor 23, the third electromagnetic valve 24, the third liquid level sensor 25 and the fourth electromagnetic valve 26 are electrically connected to the same computer controller 28. The outer gas transmission pipe 16 is communicated with a gas storage tank 29, the gas storage tank 29 is communicated with a gas generator 30, and the gas generator 30 is electrically connected with the computer controller 28, the automatic foam discharging rod feeding device 2 or the foam discharging liquid feeding pump 3, the compressor 14 and the cooling fan 15.
The utility model discloses a use method as follows:
when the foam discharging device is used, the automatic foam discharging rod feeding device 2 or the foam discharging liquid filling pump 3 is installed on the gas production tree 1, foam discharging agents are injected into a well, a large amount of low-density water-containing foam is generated by stirring natural gas flow in the well after accumulated liquid in the well is contacted with the foam discharging agents, and the water-containing foam is carried to a discharge port of the gas production tree 1 along with the natural gas flow. When the electromagnetic liquid flow meter 4 detects that liquid flows through, a signal is transmitted to the computer controller 28, the computer controller 28 controls the first electromagnetic valve 11, the first electromagnetic valve 11 is opened according to the flow rate of the liquid flowing through the electromagnetic liquid flow meter 4, and the defoaming agent in the automatic defoaming balance tank 9 flows into the liquid outlet pipeline 5 through the first electromagnetic valve 11 to defoam the water-containing foam in the liquid outlet pipeline 5.
The defoamed gas-liquid mixture enters a gas tank 7, the gas enters a compressor 14 through an exhaust pipe 12, is compressed by the compressor 14 and then enters an outer gas transmission pipe 16, and then enters a mixing transmission pipeline 17, so that the pressure of a well head is reduced, negative pressure is formed relative to a shaft, effusion in the shaft is favorably discharged, and the natural gas recovery ratio of a gas well is improved; the liquid flows into the liquid tank 8 from the water flowing pipe 18 through the one-way valve 19 and flows into the mixing pipeline 17 through the water discharging pipe 13, the gas-liquid mixture is mixed and conveyed to the external gas collecting station by the mixing pipeline 17, and gas-liquid separation is carried out by the gas collecting station.
When the pressure in the mixing and conveying pipeline 17 is high, the liquid in the liquid tank 8 is high, but the self pressure cannot press the liquid into the mixing and conveying pipeline 17, at this time, the first liquid level sensor 21 detects that the liquid level is high, the computer controller 28 controls the second electromagnetic valve 22 to be opened, the gas tank 7 and the liquid tank 8 are in a communication state through the balance pipe 20, and the gas pressure in the gas tank 7 can press the liquid in the liquid tank 8 into the mixing and conveying pipeline 17.
When the liquid level in the liquid tank 8 is low, the second liquid level sensor 23 detects that the liquid level is at the bottom position of the liquid tank 8, and the third electromagnetic valve 24 is controlled to be closed by the computer controller 28, so that the gas-liquid mixture in the mixing transmission pipeline 17 is prevented from entering the liquid tank 8 through the drain pipe 13.
When the gas pressure in the gas tank 7 is low and the liquid in the liquid tank 8 cannot be or slowly pressed into the mixing pipeline 17, the liquid level of the liquid in the liquid tank 8 gradually rises, and when the liquid level rises to the third liquid level sensor 25 positioned at the top, the computer controller 28 controls the fourth electromagnetic valve 26 to be opened, and the high-pressure gas compressed by the compressor 14 is used for pressing the liquid in the liquid tank 8 into the drain pipe 13 and enters the mixing pipeline 17.
In the whole system, natural gas produced in a gas production well generates power through the gas generator 30 to supply power to the whole system, an external power supply is not needed, the cooling fan 15 cools the compressor 14, heat generated by the compressor 14 in a gas compression process is taken away, and the service life of the compressor 14 is prolonged.
Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will understand that the present invention can be modified or replaced with other embodiments without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims. The technology, shape and construction parts which are not described in detail in the present invention are all known technology.
Claims (8)
1. The utility model provides a horizontal well integration negative pressure gas production system, includes the gas production tree, its characterized in that: the device comprises a gas production tree, and is characterized in that a foam discharging agent filling mechanism is communicated with a filling port of the gas production tree, an electromagnetic liquid flowmeter is communicated with a discharge port of the gas production tree, the electromagnetic liquid flowmeter is communicated with a gas-liquid separation tank through a liquid discharge pipeline, an automatic defoaming balance tank is communicated with the liquid discharge pipeline, an exhaust pipe and a drain pipe are arranged on the gas-liquid separation tank, the exhaust pipe is communicated with a compressor, an outlet of the compressor is communicated with an outer gas transmission pipe, and the outer gas transmission pipe and the drain pipe are communicated with the same mixed transmission pipeline; the top of the automatic defoaming balancing tank is fixedly communicated with a switch valve, the bottom of the automatic defoaming balancing tank is fixedly communicated with a first electromagnetic valve, and the outlet end of the first electromagnetic valve is communicated with a liquid outlet pipeline; the electromagnetic liquid flowmeter and the first electromagnetic valve are electrically connected with the same computer controller.
2. The horizontal well integrated negative pressure gas production system according to claim 1, wherein: the gas-liquid separation tank is internally provided with a transverse partition plate, the gas-liquid separation tank is divided into an upper gas tank and a lower liquid tank by the partition plate, the liquid outlet pipeline is communicated with the gas tank, the exhaust pipe is communicated between the gas tank and the compressor, a water flowing pipe is communicated between the bottom of the gas tank and the top of the liquid tank, and the water flowing pipe is provided with a one-way valve.
3. The horizontal well integrated negative pressure gas production system according to claim 2, wherein: a balance pipe is communicated between the top of the gas tank and the middle of the liquid tank, and a first liquid level sensor and a second electromagnetic valve are arranged at the joint of the balance pipe and the liquid tank; and the first liquid level sensor and the second electromagnetic valve are electrically connected with a computer controller.
4. The horizontal well integrated negative pressure gas production system according to claim 3, wherein: the bottom of the liquid tank is provided with a second liquid level sensor and a third electromagnetic valve, the third electromagnetic valve is communicated with the mixed transportation pipeline through a drain pipe, and the second liquid level sensor and the third electromagnetic valve are both electrically connected with the computer controller.
5. The horizontal well integrated negative pressure gas production system according to claim 4, wherein: the top of the liquid tank is communicated with a third liquid level sensor and a fourth electromagnetic valve, the fourth electromagnetic valve is communicated with an outer gas transmission pipe through a connecting pipe, and the third liquid level sensor and the fourth electromagnetic valve are both electrically connected with a computer controller.
6. The horizontal well integrated negative pressure gas production system according to any one of claims 1 to 5, wherein: the foam discharging agent filling mechanism is an automatic foam discharging rod feeding device or a foam discharging liquid filling pump.
7. The horizontal well integrated negative pressure gas production system according to claim 6, wherein: and a cooling fan is arranged on the compressor.
8. The horizontal well integrated negative pressure gas production system according to claim 7, wherein: the gas storage tank is communicated with a gas generator, and the gas generator is electrically connected with the computer controller, the foam discharging agent filling mechanism, the compressor and the cooling fan.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220723757.3U CN216841598U (en) | 2022-03-30 | 2022-03-30 | Horizontal well integrated negative pressure gas production system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220723757.3U CN216841598U (en) | 2022-03-30 | 2022-03-30 | Horizontal well integrated negative pressure gas production system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115711109A (en) * | 2022-11-15 | 2023-02-24 | 盘锦华晨石油装备制造有限公司 | Base station type drainage gas production equipment and system |
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2022
- 2022-03-30 CN CN202220723757.3U patent/CN216841598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115711109A (en) * | 2022-11-15 | 2023-02-24 | 盘锦华晨石油装备制造有限公司 | Base station type drainage gas production equipment and system |
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