CN112377154B - Automatic drainage device utilizing formation gas through magnetic reversing - Google Patents
Automatic drainage device utilizing formation gas through magnetic reversing Download PDFInfo
- Publication number
- CN112377154B CN112377154B CN202011255080.7A CN202011255080A CN112377154B CN 112377154 B CN112377154 B CN 112377154B CN 202011255080 A CN202011255080 A CN 202011255080A CN 112377154 B CN112377154 B CN 112377154B
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- valve
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- gas
- permanent magnet
- reversing
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- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 25
- 230000009471 action Effects 0.000 claims abstract description 13
- 230000008859 change Effects 0.000 claims abstract description 10
- 238000004804 winding Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 55
- 239000007788 liquid Substances 0.000 abstract description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003345 natural gas Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002343 natural gas well Substances 0.000 description 1
- 230000003716 rejuvenation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010618 wire wrap Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Electromagnetic Pumps, Or The Like (AREA)
Abstract
The invention relates to the technical field of natural gas exploitation, and particularly discloses a magnetic reversing automatic drainage gas production device which comprises a connector, a drainage plunger pump, a gas driving piston, a packer and a lower end gas production sieve tube, wherein the lower end of the drainage plunger pump is connected with the gas driving piston; when the device works, the packer is used for setting, the piston valve is driven to move by utilizing formation gas, the reversing valve moves under the action of the permanent magnet to change a flow channel, the piston is ensured to stably reciprocate, the lifting piston is driven to work, and the lifting piston draws annular shaft effusion to enter an oil pipe and lift to the ground. Meanwhile, the driven gas flows out of the well mouth through the annulus, the liquid is freely settled in the shaft, and the accumulated liquid in the shaft is converged into the lifting pump to be discharged. The invention has the advantages that the piston and the reversing valve are integrally and automatically controlled by machinery, and the reliability is higher. The driving piston is driven by the formation gas, so that the cost of the device is reduced, and the efficiency of water drainage and gas production is increased.
Description
Technical Field
The invention relates to the technical field of drainage of formation gas, in particular to a magnetic reversing automatic drainage device utilizing formation gas.
Background
Formation water cannot be brought out of the ground by a production string due to insufficient liquid carrying capacity in the production process after long-term production and gas production operation in the natural gas well, and long-term liquid deposition can cause flooding of the gas well, so that the natural gas in the well cannot be produced finally, and the natural gas production rate is influenced.
The current drainage and gas recovery processes mainly comprise the following steps:
the foam drainage gas recovery process is characterized in that bottom hole liquid is converted into foam which is easy to carry and has low density, liquid carrying capacity of gas is improved, and near-street liquid carrying flow is reduced, so that water in a shaft is easy to discharge.
The speed pipe column water drainage gas production process is characterized in that a coiled tubing with a small pipe diameter is put into a shaft to serve as a production pipe column, the sectional area of a flow passage is reduced, the gas flow rate is improved to enhance the liquid carrying capacity of gas, the process is one-time construction, subsequent maintenance is not needed, the process is complex in construction, and the cost is high.
The plunger drainage gas production process has the advantages that the plunger serves as a gas-liquid separation interface, gas and liquid are prevented from being mixed with each other, the gas lift efficiency is improved, and the plunger drainage gas production process has the advantages of being high in liquid drainage efficiency, high in automation degree and high in later maintenance cost.
The gas lift drainage gas production process has a good gas lift effect on a gas well with high bottom layer pressure, accumulated liquid in a shaft and a stratum can be well discharged through multiple gas lifts, but the gas lift drainage gas production process has no obvious effect on gas with high bottom layer water production and low stratum productivity and can only be used as a means of induced spray rejuvenation.
Disclosure of Invention
The invention aims to solve the technical problem of providing a magnetic reversing automatic drainage device utilizing formation gas, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the automatic drainage device utilizing the formation gas by magnetic reversing is constructed and comprises:
an oil pipe; the oil pipe is sleeved at one end of a connector, and the other end of the connector is further sleeved at one end of the upper barrel; the other end of the upper cylinder is connected with one end of the outer cylinder of the pump body, a lifting piston is arranged at the position where the upper cylinder and the outer cylinder of the pump body are connected, and an outlet one-way valve and an inlet one-way valve which are communicated with the upper cylinder and the outer cylinder of the pump body are respectively arranged at two sides of the lifting piston; an exhaust pipe is arranged in the center of the outer cylinder of the pump body, one end of the exhaust pipe is connected with a lifting piston, the other end of the exhaust pipe is connected with a driving piston valve, the driving piston valve is connected with a reversing valve, the reversing valve is fixed in the cylinder of the outer cylinder of the pump body, a permanent magnet is embedded outside a valve body of the reversing valve, meanwhile, the permanent magnet is correspondingly arranged outside the outer cylinder of the pump body, the other end of the outer cylinder of the pump body is connected with a packer rubber cylinder, an input pipe is arranged in the center of the interior of the packer rubber cylinder, one end of the input pipe is connected with the reversing valve and is communicated with the exhaust pipe, and the other end of the input pipe is connected with a wire winding screen pipe; the other end of the wire winding sieve tube is connected with the sieve tube; when the driving piston moves to the limit position, the reversing valve can change position under the action of the permanent magnet, the gas flow channel is changed, the driving piston valve can move in the opposite direction under the action of the pressure of gas, and the driving piston valve reverses again when reaching the other limit position and continues the next cycle.
Wherein, a packer slip is arranged on the packer rubber sleeve outside the wire wrapping screen pipe.
Permanent magnets which are respectively and correspondingly arranged on the outer side of the reversing valve body and the outer side of the outer cylinder of the pump body are Ru-Fe-B permanent magnets.
Wherein, the outer side of the connector is provided with an overflow valve and a sintered filter stick.
The packer is used for packing an annular space, and the energy of the formation gas is used for driving the piston pump.
The permanent magnet arranged on the reversing valve body is an annular permanent magnet, and the permanent magnet arranged on the outer cylinder of the pump body is a cylindrical permanent magnet.
Different from the prior art, the magnetic reversing automatic drainage device utilizing the formation gas provided by the invention drives the piston to reciprocate by the energy of the formation gas, and the reciprocating piston drives the plunger pump to draw and discharge accumulated liquid at the bottom of the well. The device includes an upper end connector, a drainage plunger pump, a gas driven piston pump, a packer, and a lower screen. The invention utilizes the original natural gas power of the stratum to change the direction of the valve body through the permanent magnet, ensures that the piston valve is driven to reciprocate, provides power for plunger drainage, and ensures the reliability of drainage by controlling the whole process by machinery. No extra energy is needed, the drainage cost is reduced, and the drainage efficiency is improved.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of an automatic drainage device using formation gas by magnetic reversing according to the present invention.
Fig. 2 is a schematic view of a flow path state when a piston of the automatic drainage device for formation gas is lifted by magnetic reversing according to the present invention.
FIG. 3 is a schematic view of a flow channel of the magnetic reversing automatic drainage device for formation gas according to the present invention when a piston descends.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1, the invention provides an overpressure emergency treatment pry for a shale gas inlet station, which comprises:
an oil pipe 1; the oil pipe 1 is sleeved at one end of a connector 2, and the other end of the connector 2 is further sleeved at one end of an upper cylinder 5; the other end of the upper cylinder 5 is connected with one end of the pump body outer cylinder 9, a lifting piston 6 is arranged at the connecting position of the upper cylinder 5 and the pump body outer cylinder 9, and an outlet one-way valve 7 and an inlet one-way valve 8 which are communicated with the upper cylinder 5 and the pump body outer cylinder 9 are respectively arranged at two sides of the lifting piston 6; an exhaust pipe 10 is arranged in the center of a pump body outer cylinder 9, one end of the exhaust pipe 10 is connected with a lifting piston 6, the other end of the exhaust pipe is connected with a driving piston valve 11, the driving piston valve 11 is connected with a reversing valve 13, the reversing valve 13 is fixed in a cylinder body of the pump body outer cylinder 9, an annular permanent magnet 12 is embedded on the outer side of a valve body of the reversing valve, meanwhile, a cylindrical permanent magnet 14 is correspondingly arranged on the outer side of the pump body outer cylinder 9, the other end of the pump body outer cylinder 9 is connected with a packer rubber cylinder 15, an input pipe 16 is arranged in the center of the interior of the packer rubber cylinder 15, one end of the input pipe 16 is connected with the reversing valve 13 and is communicated with the exhaust pipe 10, and the other end of the input pipe is connected with a wire winding screen 18; the other end of the wire wrapped screen pipe 18 is connected with a screen pipe 19; wherein, the Ru magnet is embedded on the valve body of the reversing valve 13, the permanent magnet is correspondingly arranged on the outer cylinder of the pump body, and the reversing valve 13 can change position under the action of the permanent magnet when the driving piston valve 11 moves to the extreme position, the gas flow passage is changed, the driving piston valve 11 can move in the opposite direction under the action of the pressure of gas, and the reversing valve can change direction again when the driving piston valve reaches another extreme position, and the next circulation is continued.
Wherein, a packer slip 17 is arranged on the packer rubber sleeve 15 outside the wire-wrapped screen pipe 18.
Permanent magnets which are correspondingly arranged outside the valve body of the reversing valve 13 and outside the outer cylinder 10 of the pump body respectively adopt Ru Fe B permanent magnets.
Wherein, the outer side of the connector 2 is provided with an overflow valve 3 and a sintered filter stick 4.
Wherein, the packer is formed inside packer packing element 15 for seal off the annular space, guarantee that the energy of formation gas is used for driving the piston pump.
The permanent magnet arranged on the valve body of the reversing valve 13 is an annular permanent magnet, and the permanent magnet arranged on the outer cylinder 10 of the pump body is a cylindrical permanent magnet.
Due to the packer action, formation gas flows from the inlet pipe 16 into the drive piston chamber after passing through the screen 19, pushing the drive piston valve 11 into motion. When the driving piston valve 11 moves to the limit position, the reversing valve 13 in the piston body is reversed under the action of the permanent magnet, after the reversing valve 13 is reversed, the flow passage is changed, the driving acting force of the driving piston valve 11 is reversed, and the driving piston valve 11 moves in the reverse direction. As shown in fig. 2 and 3. The circulation ensures that the driving piston valve 11 reciprocates, the upper end of the exhaust pipe 10 is connected with a lifting piston 6, the driving piston valve 11 reciprocates to drive the lifting piston 6 to reciprocate simultaneously, and at the moment, the lifting piston cavity can draw the accumulated liquid in the shaft and discharge the accumulated liquid from the oil pipe 1. And the gas after the driving piston does work enters the annular space, wherein the gas part is discharged into a wellhead through the annular space, the liquid part is deposited in the annular space, and the liquid part is discharged out of the ground from the oil pipe 1 through the plunger pump.
After the device is put into the well bottom, the packer is set, the gas-liquid mixed fluid at the well bottom can only enter the input pipe through the screen pipe 19 and the wire-wound screen pipe 18, the gas enters the lower cavity of the piston through the input pipe 16 through the central flow passage of the piston, the upper cavity of the piston is connected with the exhaust pipe, and the piston valve 11 is driven to move upwards under the action of the pressure difference between the upper part and the lower part. When moving to the uppermost limit position, the ring-shaped permanent magnet 12 in the reversing valve 13 at the center of the piston body interacts with the cylinder-type permanent magnet 14, and the position of the reversing valve 13 changes, simultaneously driving the flow passage change in the piston valve 11. At the moment, the formation gas enters the upper cavity of the driving piston valve 11 through the input pipe, the lower cavity of the driving piston valve 11 is communicated with the exhaust pipe, the driving piston valve 11 moves downwards under the action of the difference between the upper pressure and the lower pressure, the driving piston valve 11 is reversed again under the action of the permanent magnet in the outer cylinder when moving to the limit position, the flow channel of the piston cavity is reversed, and the driving piston valve 11 is reversed to perform circular motion again. The drive piston valve 11 drives the lifting piston 6 to reciprocate simultaneously when the drive piston valve reciprocates under the drive of gas, the volume of the cavity of the lifting piston 6 changes at the moment, when the lifting piston 6 moves upwards, effusion in large annular space generated by the volume change of the cavity enters the cavity through the inlet check valve 8, when the lifting piston 6 moves downwards, the volume of the cavity is reduced, and the effusion in the cavity enters the oil pipe through the outlet check valve 7 and is discharged out of the ground. The working principle of the driving piston and the magnetic reversing valve is shown in fig. 2 and fig. 3, when the driving piston is at different positions, the reversing valve in the piston body changes positions under the action of the permanent magnet, and meanwhile, the change of a flow passage is controlled, so that the reciprocating motion of the driving piston is ensured.
Different from the prior art, the magnetic reversing automatic drainage device utilizing the formation gas provided by the invention drives the driving piston valve 11 to reciprocate by the energy of the formation gas, and the reciprocating driving piston valve 11 drives the plunger pump to suck and discharge accumulated liquid at the bottom of a well. The device includes an upper end connector, a drainage plunger pump, a gas driven piston pump, a packer, and a lower screen. The invention utilizes the original natural gas power of the stratum to change the direction of the valve body through the permanent magnet, ensures that the driving piston reciprocates, provides power for plunger drainage, and ensures the reliability of drainage by controlling the whole process by machinery. No extra energy is needed, the drainage cost is reduced, and the drainage efficiency is improved.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a magnetic force switching-over utilizes automatic drainage device of formation gas which characterized in that includes:
an oil pipe; the oil pipe is sleeved at one end of a connector, and the other end of the connector is further sleeved at one end of the upper cylinder body; the other end of the upper cylinder body is connected with one end of the pump body outer cylinder, a lifting piston is arranged at the connection position of the upper cylinder body and the pump body outer cylinder, and an outlet one-way valve and an inlet one-way valve which are communicated with the upper cylinder body and the pump body outer cylinder are respectively arranged on two sides of the lifting piston; an exhaust pipe is arranged in the center of the outer cylinder of the pump body, one end of the exhaust pipe is connected with a lifting piston, the other end of the exhaust pipe is connected with a driving piston valve, the driving piston valve is connected with a reversing valve, the reversing valve is fixed in the cylinder of the outer cylinder of the pump body, a permanent magnet is embedded outside a valve body of the reversing valve, meanwhile, the permanent magnet is correspondingly arranged outside the outer cylinder of the pump body, the other end of the outer cylinder of the pump body is connected with a packer rubber cylinder, an input pipe is arranged in the center of the interior of the packer rubber cylinder, one end of the input pipe is connected with the reversing valve and is communicated with the exhaust pipe, and the other end of the input pipe is connected with a wire winding screen pipe; the other end of the wire-wound sieve tube is connected with the sieve tube; when the driving piston valve moves to the limit position, the reversing valve can change the position under the action of the permanent magnet, the gas flow channel is changed, the driving piston valve can move in the opposite direction under the action of the pressure of gas, and the driving piston valve reverses again when reaching the other limit position and continues the next cycle.
2. The apparatus of claim 1, wherein the packer slips are disposed on the packer rubber outside the wire-wrapped screen.
3. The magnetic-force-reversing automatic drainage device utilizing formation gas according to claim 1, characterized in that permanent magnets respectively correspondingly arranged on the outer side of the reversing valve body and the outer side of the pump body outer cylinder are Ru Fe B permanent magnets.
4. The magnetic-force-reversing automatic drainage device utilizing formation gas as claimed in claim 1, wherein an overflow valve and a sintered filter stick are arranged outside the connector.
5. The magnetic reversing automatic drainage device utilizing formation gas as claimed in claim 1, wherein a packer is used for sealing off an annular space, and the energy of the formation gas is ensured to be used for driving a piston pump.
6. The magnetic force direction changing automatic drainage device utilizing formation gas according to claim 1, wherein the permanent magnet arranged on the valve body of the direction changing valve is an annular permanent magnet, and the permanent magnet arranged on the outer cylinder of the pump body is a cylindrical permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255080.7A CN112377154B (en) | 2020-11-11 | 2020-11-11 | Automatic drainage device utilizing formation gas through magnetic reversing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011255080.7A CN112377154B (en) | 2020-11-11 | 2020-11-11 | Automatic drainage device utilizing formation gas through magnetic reversing |
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| Publication Number | Publication Date |
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| CN112377154A CN112377154A (en) | 2021-02-19 |
| CN112377154B true CN112377154B (en) | 2023-02-07 |
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| CN202011255080.7A Active CN112377154B (en) | 2020-11-11 | 2020-11-11 | Automatic drainage device utilizing formation gas through magnetic reversing |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203145897U (en) * | 2013-01-10 | 2013-08-21 | 王刚 | Multifunctional oil pump |
| CN208518830U (en) * | 2018-05-29 | 2019-02-19 | 南京聚源隆能源科技有限公司 | A kind of well liquid drive reciprocal reciprocating oil pumping system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6817409B2 (en) * | 2001-06-13 | 2004-11-16 | Weatherford/Lamb, Inc. | Double-acting reciprocating downhole pump |
| CN202417966U (en) * | 2012-01-09 | 2012-09-05 | 广东永泉阀门科技有限公司 | Pneumatic energy-saving piston balancing water pump control valve |
| US20140322035A1 (en) * | 2013-03-15 | 2014-10-30 | Richard F. McNichol | Drive system for surface hydraulic accumulator |
| US10246976B2 (en) * | 2015-01-27 | 2019-04-02 | Conocophillips Company | Linear induction motor plunger lift |
| CN106522898B (en) * | 2016-11-02 | 2019-05-17 | 中国石油化工股份有限公司 | Gas well Auto-drainage plunger |
| CN106968640A (en) * | 2017-03-15 | 2017-07-21 | 西南石油大学 | A kind of drainage underground gas production instrument |
| US11022109B2 (en) * | 2018-01-17 | 2021-06-01 | Dmytro KHACHATUROV | Double acting linear electrical submersible pump and method for its operation |
| CN108506179B (en) * | 2018-05-29 | 2024-03-22 | 南京聚源隆能源科技有限公司 | Oil well liquid drives reciprocal oil pumping system |
| CN210460603U (en) * | 2019-08-16 | 2020-05-05 | 中石化石油工程技术服务有限公司 | Coiled tubing drainage gas production device |
| CN111271025B (en) * | 2020-01-11 | 2024-06-11 | 中石化石油工程技术服务有限公司 | Automatic drainage gas production device for gas well |
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2020
- 2020-11-11 CN CN202011255080.7A patent/CN112377154B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203145897U (en) * | 2013-01-10 | 2013-08-21 | 王刚 | Multifunctional oil pump |
| CN208518830U (en) * | 2018-05-29 | 2019-02-19 | 南京聚源隆能源科技有限公司 | A kind of well liquid drive reciprocal reciprocating oil pumping system |
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