CN212106218U - Automatic drainage plunger pump for gas well - Google Patents
Automatic drainage plunger pump for gas well Download PDFInfo
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- CN212106218U CN212106218U CN202020053975.1U CN202020053975U CN212106218U CN 212106218 U CN212106218 U CN 212106218U CN 202020053975 U CN202020053975 U CN 202020053975U CN 212106218 U CN212106218 U CN 212106218U
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Abstract
The utility model discloses an automatic drainage plunger pump for a gas well, which comprises at least one pump body; each pump body comprises a liquid inlet channel, a liquid discharge channel, a lower joint, a power cavity, a lower lifting cavity, an upper lifting cavity, a cross-shaped lifting piston, an up-down control device for controlling the movement of the lifting piston and an upper joint; a formation fluid channel is arranged in the lower joint; the upper lifting cavity and the lower lifting cavity are respectively positioned at the upper end and the lower end of the power cavity; the upper end and the lower end of the lifting piston are respectively partially inserted into the upper lifting cavity and the lower lifting cavity, the middle part of the lifting piston is positioned in the power cavity and divides the power cavity into an upper power cavity and a lower power cavity along the up-down direction; the stratum fluid channel is communicated with the upper power cavity and the lower power cavity; the liquid inlet channel is correspondingly communicated with the lower lifting cavity and the upper lifting cavity through the lower liquid inlet control device and the upper liquid inlet control device respectively, and the upper lifting cavity and the lower lifting cavity are communicated with the liquid discharge channel through the upper liquid discharge control device and the lower liquid discharge control device respectively. The plunger pump can automatically operate without applying external power.
Description
Technical Field
The utility model relates to an oil industry is instrument technical field in the pit especially relates to one kind and is fit for in gas well drainage gas production operation, and gas well self energy can not be with the gas well automatic drainage plunger pump that uses when the pit shaft of formation water discharge.
Background
The main problems faced by the existing gas well in the long-term production process are that along with the production of the gas well, gas in a stratum is continuously produced out of the ground, the energy of the stratum is continuously reduced, the flow rate of the gas is not enough to bring accumulated liquid at the bottom of the well out of the ground, and meanwhile, the stratum liquid is also continuously accumulated in a shaft. In the later period of gas well gas exhaust, the accumulated liquid in the shaft is not enough to be exhausted to the ground by means of the energy of the stratum, the gas output of the gas well can be seriously influenced when the accumulated liquid in the shaft reaches a certain height, and even the production stop of the gas well can be caused when the accumulated liquid in the shaft is serious. This problem is particularly significant in atmospheric and low-pressure gas wells.
At present, in the production of oil and gas wells, a plurality of methods for solving accumulated liquid in a shaft of a gas well are provided, and the methods such as gas lift, swabbing, electric submersible pump assisted drainage and the like are commonly used, so that the method is mainly used for the condition that the gas well completely has no flow. In addition, the prior drainage-assisting measures such as a pipe column, a foam drainage and a jet pump are preferred, but the prior drainage-assisting measures have certain disadvantages, need to apply an external power source or have higher construction cost.
Disclosure of Invention
In order to overcome the not enough of prior art, the utility model discloses a utility model aims to provide an automatic drainage plunger pump is used to gas well, its accessible oil pipe (or continuous oil pipe) is gone into in the well down, relies on the energy of stratum itself with pit shaft hydrops discharge ground, need not to rely on external power, realizes the drainage gas production function of gas well, but also has that construction cost is low, the maintenance is convenient, easy operation's advantage.
In order to achieve the above object, the present invention adopts the following technical solutions:
an automatic drainage plunger pump for a gas well comprises at least one pump body; each pump body comprises a liquid inlet channel, a liquid discharge channel, a lower joint, a power cavity, a lower lifting cavity, an upper lifting cavity, a cross-shaped lifting piston, an up-down control device and an upper joint, wherein the up-down control device is used for controlling the lifting piston to move up and down; a formation fluid channel is arranged in the lower joint; the upper lifting cavity and the lower lifting cavity are respectively positioned at the upper end and the lower end of the power cavity; the upper end and the lower end of the lifting piston are respectively and correspondingly partially inserted into the upper lifting cavity and the lower lifting cavity, the middle part of the lifting piston is positioned in the power cavity and divides the power cavity into an upper power cavity and a lower power cavity along the up-down direction; the formation fluid channel is communicated with the upper power cavity and the lower power cavity; the liquid inlet channel is communicated with the lower lifting cavity through a lower liquid inlet control device, and the upper lifting cavity is communicated with the liquid discharge channel through an upper liquid outlet control device; the liquid inlet channel is communicated with the upper lifting cavity through the upper liquid inlet control device, and the lower lifting cavity is communicated with the liquid discharge channel through the lower liquid outlet control device.
Furthermore, the upper liquid inlet control device, the lower liquid inlet control device, the upper liquid outlet control device and the lower liquid outlet control device are all one-way valves.
Further, the uplink and downlink control device comprises a lower pilot valve arranged in the lower power cavity and used for touching the lower end of the middle part of the lifting piston, an upper pilot valve arranged in the upper power cavity and used for touching the upper end of the middle part of the lifting piston, and a reversing valve used for electrically connecting the upper pilot valve and the lower pilot valve.
Preferably, the reversing valve is fixedly connected with the upper joint.
Further, the pump body also comprises a valve core main body; the liquid inlet channel, the liquid discharge channel, the power cavity, the lower lifting cavity, the upper lifting cavity, the lifting piston and the uplink and downlink control device are respectively arranged in the valve core main body.
Preferably, the upper joint and the lower joint are respectively and correspondingly connected to the upper end and the lower end of the valve core main body in a sealing manner.
Further, the ratio of the cross-sectional area of the power cavity to the area of the upper lifting cavity and the ratio of the cross-sectional area of the power cavity to the area of the lower lifting cavity are both 35: 1.
Further, the number of the pump bodies is more than two; the pump bodies are connected in parallel.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses an automatic drainage plunger pump is used to gas well, it only relies on the atmospheric pressure difference of stratum own can move, and not only simple structure, convenient operation need not extra manual work moreover to apply the automatic operation that external power can realize the pump body, can effectively solve the serious problem of gas well production later stage pit shaft hydrops.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural view of a more preferred embodiment of the automatic water discharge plunger pump for a gas well according to the present invention.
Wherein the reference numerals in fig. 1 are explained as follows:
1-lower joint, 2-1-lower liquid inlet one-way valve, 2-2-upper liquid inlet one-way valve, 3-1-lower pilot valve, 3-2-upper pilot valve, 4-lifting piston, 5-reversing valve, 6-upper joint, 7-formation fluid channel, 8-1-lower liquid outlet one-way valve, 8-2-upper liquid outlet one-way valve, 9-1-lower lifting cavity, 9-2-upper lifting cavity, 10-1-lower power cavity, 10-2-upper power cavity, 11-liquid inlet channel, 12-liquid outlet channel.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description is given to the embodiments, structures, features and effects according to the present invention with reference to the accompanying drawings and preferred embodiments as follows:
as shown in fig. 1, the automatic water discharge plunger pump for gas wells of the present invention comprises a pump body; the pump body comprises a valve core main body, a liquid inlet channel 11, a liquid discharge channel 12, a lower joint 1, a power cavity, a lower lifting cavity 9-1, an upper lifting cavity 9-2, a cross-shaped lifting piston 4, an up-down control device for controlling the lifting piston to move up and down, and an upper joint 6; the liquid inlet channel, the liquid discharge channel, the power cavity, the lower lifting cavity, the upper lifting cavity, the lifting piston and the uplink and downlink control device are respectively arranged in the valve core main body. The upper joint and the lower joint are respectively and correspondingly connected with the upper end and the lower end of the valve core main body in a sealing mode. A formation fluid channel 7 is arranged in the lower joint; the upper lifting cavity and the lower lifting cavity are respectively positioned at the upper end and the lower end of the power cavity; the upper end and the lower end of the lifting piston are respectively and correspondingly partially inserted into the upper lifting cavity and the lower lifting cavity, the middle part of the lifting piston is positioned in the power cavity and divides the power cavity into an upper power cavity 10-2 and a lower power cavity 10-1 along the up-down direction; the formation fluid channel is communicated with the upper power cavity and the lower power cavity; the liquid inlet channel is communicated with the lower lifting cavity through a lower liquid inlet control device, and the upper lifting cavity is communicated with the liquid discharge channel through an upper liquid outlet control device; the liquid inlet channel is communicated with the upper lifting cavity through the upper liquid inlet control device, and the lower lifting cavity is communicated with the liquid discharge channel through the lower liquid outlet control device.
In order to simplify the structure of the automatic drainage plunger pump for the gas well of the utility model, which helps to save production cost, the embodiment is preferred that the upper and lower liquid inlet control devices and the upper and lower liquid outlet control devices are check valves, that is, the upper and lower liquid inlet control devices and the upper and lower liquid outlet control devices are respectively an upper liquid inlet check valve 2-2, a lower liquid inlet check valve 2-1, an upper liquid outlet check valve 8-2 and a lower liquid outlet check valve 8-1 in fig. 1.
Specifically, the uplink and downlink control device comprises a lower pilot valve 3-1 which is arranged in the lower power cavity and used for touching the lower end of the middle part of the lifting piston, an upper pilot valve 3-2 which is arranged in the upper power cavity and used for touching the upper end of the middle part of the lifting piston, and a reversing valve 5 which is used for electrically connecting the upper pilot valve 3-2 and the lower pilot valve 3-1; the reversing valve 5 is fixedly connected with the upper joint 6.
In order to amplify the energy of the formation fluid by 35 times to be more suitable for the actual use requirement, as a further improvement of the embodiment, the ratio of the cross-sectional area of the power cavity to the area of the upper lifting cavity and the ratio of the cross-sectional area of the power cavity to the area of the lower lifting cavity are both 35: 1.
In other implementations, the number of the pumps is two or more; the pump bodies are connected in parallel to form a multi-stage pump. The drainage efficiency can be improved by times after the pump bodies are connected in parallel, and the pump bodies of the multi-stage pumps work independently, so that the work of other pump bodies is not influenced even if a single pump body fails.
The utility model discloses a working principle of automatic drainage plunger pump for gas well specifically as follows:
the utility model discloses a working process of automatic drainage plunger pump for gas well divide into and lifts the piston and go upward and lift two down stages of piston, and two stage processes are the flowing back process.
In the ascending stage of the lifting piston 4, formation fluid enters the lower power cavity 10-1 through the formation fluid channel 7 to push the lifting piston 4 to ascend. In the ascending process of the lifting piston 4, negative pressure is formed in the lower lifting cavity 9-1, so that accumulated liquid in a shaft is driven to enter the lower lifting cavity 9-1 through the liquid inlet channel 11 and the lower liquid inlet one-way valve 2-1; the lifting piston continues to move upwards, liquid in the upper lifting cavity 9-2 is influenced by the thrust of the piston, is discharged out of the upper lifting cavity through the upper liquid outlet one-way valve 8-2, and enters the liquid discharge channel 12 to be discharged.
After the liquid in the upper lifting cavity 9-2 is exhausted, the lifting piston 4 touches the working switch of the upper pilot valve 3-2, and the upper pilot valve drives the reversing valve 5 to reverse, so that the flow direction of the formation fluid is changed. Formation fluid enters the upper power cavity 10-2 through the formation fluid channel 7 to provide power for the lifting piston to descend.
The lifting piston 4 enters a descending stage, and negative pressure is formed in the upper lifting cavity 9-2 in the descending process of the lifting piston 4, so that the accumulated liquid in the shaft is driven to enter the upper lifting cavity 9-2 through the liquid inlet channel 11 and the upper liquid inlet one-way valve 2-2; the lifting piston continues to move downwards, and the liquid in the lower lifting cavity 9-1 is influenced by the thrust of the lifting piston 4, discharged out of the lower lifting cavity through the lower liquid outlet one-way valve 8-1, and enters the liquid discharge channel 12 to be discharged.
Formation fluid continuously enters the utility model discloses a gas well is with automatic drainage plunger pump continuously provides power for this plunger pump, lifts the piston and constantly reciprocates, reaches the purpose that lasts the flowing back.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (8)
1. The utility model provides a gas well is with automatic drainage plunger pump which characterized in that: comprises at least one pump body; each pump body comprises a liquid inlet channel, a liquid discharge channel, a lower joint, a power cavity, a lower lifting cavity, an upper lifting cavity, a cross-shaped lifting piston, an up-down control device and an upper joint, wherein the up-down control device is used for controlling the lifting piston to move up and down; a formation fluid channel is arranged in the lower joint; the upper lifting cavity and the lower lifting cavity are respectively positioned at the upper end and the lower end of the power cavity; the upper end and the lower end of the lifting piston are respectively and correspondingly partially inserted into the upper lifting cavity and the lower lifting cavity, the middle part of the lifting piston is positioned in the power cavity and divides the power cavity into an upper power cavity and a lower power cavity along the up-down direction; the formation fluid channel is communicated with the upper power cavity and the lower power cavity; the liquid inlet channel is communicated with the lower lifting cavity through a lower liquid inlet control device, and the upper lifting cavity is communicated with the liquid discharge channel through an upper liquid outlet control device; the liquid inlet channel is communicated with the upper lifting cavity through the upper liquid inlet control device, and the lower lifting cavity is communicated with the liquid discharge channel through the lower liquid outlet control device.
2. The automatic drainage plunger pump for gas wells as claimed in claim 1, wherein: the upper liquid inlet control device, the lower liquid inlet control device, the upper liquid outlet control device and the lower liquid outlet control device are all one-way valves.
3. The automatic drainage plunger pump for gas wells as claimed in claim 1, wherein: the ascending and descending control device comprises a lower pilot valve, an upper pilot valve and a reversing valve, wherein the lower pilot valve is arranged in the lower power cavity and used for touching the lower end of the middle part of the lifting piston, the upper pilot valve is arranged in the upper power cavity and used for touching the upper end of the middle part of the lifting piston, and the reversing valve is used for electrically connecting the upper pilot valve and the lower pilot valve.
4. The automatic drainage plunger pump for gas wells as claimed in claim 3, wherein: the reversing valve is fixedly connected with the upper joint.
5. The automatic drainage plunger pump for gas wells as claimed in claim 1, wherein: the pump body also comprises a valve core main body; the liquid inlet channel, the liquid discharge channel, the power cavity, the lower lifting cavity, the upper lifting cavity, the lifting piston and the uplink and downlink control device are respectively arranged in the valve core main body.
6. The automatic drainage plunger pump for gas wells as claimed in claim 5, wherein: the upper joint and the lower joint are respectively and correspondingly connected with the upper end and the lower end of the valve core main body in a sealing mode.
7. The automatic drainage plunger pump for gas wells as claimed in claim 1, wherein: the ratio of the cross-sectional area of the power cavity to the area of the upper lifting cavity and the ratio of the cross-sectional area of the power cavity to the area of the lower lifting cavity are both 35: 1.
8. The automatic drainage plunger pump for gas wells as claimed in any one of claims 1 to 7, wherein: the number of the pump bodies is more than two; the pump bodies are connected in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020053975.1U CN212106218U (en) | 2020-01-11 | 2020-01-11 | Automatic drainage plunger pump for gas well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020053975.1U CN212106218U (en) | 2020-01-11 | 2020-01-11 | Automatic drainage plunger pump for gas well |
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| CN212106218U true CN212106218U (en) | 2020-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020053975.1U Active CN212106218U (en) | 2020-01-11 | 2020-01-11 | Automatic drainage plunger pump for gas well |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217444A (en) * | 2022-06-29 | 2022-10-21 | 陕西航天泵阀科技集团有限公司 | Downhole drainage device and system |
| CN115217444B (en) * | 2022-06-29 | 2024-05-10 | 陕西航天泵阀科技集团有限公司 | Underground liquid draining device and system |
-
2020
- 2020-01-11 CN CN202020053975.1U patent/CN212106218U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115217444A (en) * | 2022-06-29 | 2022-10-21 | 陕西航天泵阀科技集团有限公司 | Downhole drainage device and system |
| CN115217444B (en) * | 2022-06-29 | 2024-05-10 | 陕西航天泵阀科技集团有限公司 | Underground liquid draining device and system |
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