CN110924890A - Rechargeable wellhead device and plunger gas lift drainage gas production system - Google Patents
Rechargeable wellhead device and plunger gas lift drainage gas production system Download PDFInfo
- Publication number
- CN110924890A CN110924890A CN201911128564.2A CN201911128564A CN110924890A CN 110924890 A CN110924890 A CN 110924890A CN 201911128564 A CN201911128564 A CN 201911128564A CN 110924890 A CN110924890 A CN 110924890A
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- Prior art keywords
- wellhead
- blowout prevention
- plunger
- coil
- charging
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 230000002265 prevention Effects 0.000 claims abstract description 32
- 238000004891 communication Methods 0.000 claims description 20
- 238000013016 damping Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 229920006158 high molecular weight polymer Polymers 0.000 claims 1
- 230000013011 mating Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 19
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003345 natural gas Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 1
- 239000004697 Polyetherimide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920002530 polyetherether ketone Polymers 0.000 description 1
- 229920001601 polyetherimide Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a rechargeable wellhead device, which comprises: the device comprises a wellhead blowout prevention cap, a first blowout prevention pipe, a catcher, a charging column, a second blowout prevention pipe, a blow-down valve, a return pipe and a pneumatic valve, wherein the wellhead blowout prevention cap is positioned at one end of the first blowout prevention pipe; two ends of the charging column are respectively connected with the other end of the first blowout prevention pipe and one end of the second blowout prevention pipe; the other end of the second blowout prevention pipe is provided with a mounting flange to be connected with a gas production tree; the catcher is arranged on the side edge of the first blowout prevention pipe; the emptying valve is arranged on the side edge of the second blowout prevention pipe; two ends of the return pipe are respectively connected with the side edge of the first blowout prevention pipe and the side edge of the second blowout prevention pipe; the pneumatic valve is arranged at the tail end of the return pipe. The rechargeable wellhead device provided by the invention can realize wireless charging of the plunger, so that the plunger can stably work for a long time and the problem of increasing difficulty in wellhead operation caused by frequently disassembling and assembling instruments is solved.
Description
Technical Field
The invention belongs to the technical field of natural gas exploitation, and particularly relates to a rechargeable wellhead device.
Background
The plunger gas lift water drainage gas production method is a water drainage gas production process commonly used in natural gas production, and mainly utilizes the self energy of a gas well to push a plunger in an oil pipe to lift water, does not need other power equipment, and has low production cost. For wells with low efficiency of conventional continuous gas lift or intermittent gas lift, the production efficiency can be improved by adopting plunger gas lift, and the ineffective consumption of gas is avoided.
Along with continuous exploitation of natural gas, the energy and gas production efficiency of a gas well are gradually reduced, data such as temperature, pressure, liquid level height and the like in the gas well need to be mastered in real time, and usually, an acquisition component is integrated into a plunger piston and is used for downhole measurement along with the plunger piston and is matched with a wellhead device to finish data acquisition.
However, since the collecting device needs to work under the condition of power-on, the collecting device needs to be charged after being used for a period of time. The existing wellhead device needs to be disassembled and assembled again each time charging is carried out, so that the plunger cannot work stably for a long time; in addition, frequent disassembly and assembly also increases the difficulty of wellhead operation.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a rechargeable wellhead. The technical problem to be solved by the invention is realized by the following technical scheme:
a rechargeable wellhead device comprising: a wellhead blowout-preventing cap, a first blowout-preventing pipe, a catcher, a charging column, a second blowout-preventing pipe, a blow-down valve, a return pipe and a pneumatic valve, wherein,
the wellhead blowout preventer cap is positioned at one end of the first lubricator;
two ends of the charging column are respectively connected with the other end of the first blowout prevention pipe and one end of the second blowout prevention pipe so as to charge the plunger;
the other end of the second blowout prevention pipe is provided with a mounting flange to be connected with a gas production tree;
the catcher is arranged on the side of the first lubricator to catch the position of the plunger;
the emptying valve is arranged on the side edge of the second blowout prevention pipe;
two ends of the return pipe are respectively connected with the side edge of the first blowout prevention pipe and the side edge of the second blowout prevention pipe;
the pneumatic valve is arranged at the tail end of the return pipe to realize timing well opening and closing.
In one embodiment of the present invention, the charging post comprises a charging coil, a communication coil, a magnetic core, a sleeve, and a power module, wherein,
the communication coil is wound on the magnetic core;
the charging coil is wound on the communication coil;
the charging coil and the communication coil are placed in the sleeve together with the magnetic core;
be equipped with the wire hole on the sleeve lateral wall, the charging coil passes through the wire hole is in with the setting the outside power module of sleeve is connected.
In one embodiment of the present invention, the charging coil and the communication coil are wound by enameled wires.
In one embodiment of the invention, the two ends of the magnetic core are provided with external threads which are matched and connected with the internal threads at the two ends of the sleeve.
In one embodiment of the invention, the magnetic core is machined from a magnetically permeable material.
In one embodiment of the present invention, the magnetically permeable material is a high molecular polymer.
In one embodiment of the invention, a damping device is provided within the first lubricator.
In one embodiment of the invention, the damping device is a spring seat and a damping spring mounted on the spring seat.
In one embodiment of the present invention, the charging post is connected to the first lubricator and the second lubricator by a screw thread.
The invention further provides a plunger gas lift drainage gas production system, which comprises a wellhead device and a plunger, wherein the wellhead device is the wellhead device in the embodiment, a receiving coil and a rechargeable battery are arranged inside the plunger, the receiving coil is connected with the rechargeable battery, and the receiving coil and the communication coil are wirelessly coupled to wirelessly charge the rechargeable battery.
The invention has the beneficial effects that:
1. according to the chargeable wellhead device, the charging column is additionally arranged, so that the wireless charging function of the plunger is realized, the plunger can be charged in time when needed, and the long-time stable work of the device can be guaranteed;
2. according to the rechargeable wellhead device, the plunger is charged in a wireless charging mode, and an instrument does not need to be disassembled and assembled, so that the problem that the difficulty of wellhead operation is increased due to frequent disassembly and assembly is solved;
3. according to the chargeable wellhead device, the spring and the spring seat are arranged in the blowout prevention pipe, so that the plunger can be buffered and protected, and the service life of the plunger is prolonged;
4. the chargeable wellhead device provided by the invention connects the charging column with the lubricator through threads, is convenient to disassemble and assemble, and is easy to maintain.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic diagram of a rechargeable wellhead assembly according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an internal structure of a charging column according to an embodiment of the present invention;
fig. 3 is a schematic view of the internal structure of the first blowout preventer according to the embodiment of the present invention.
The reference numbers illustrate: 1-wellhead blowout prevention cap; 2-a first lubricator; 3-a catcher; 4-a charging column; 5-a second lubricator; 6-an emptying valve; 7-a return pipe; 8-pneumatic valves; 21-spring seats; 22-a buffer spring; 41-a charging coil; 42-a communication coil; 43-a magnetic core; 44-a sleeve; 45-power supply module.
Detailed Description
The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.
Example one
Referring to fig. 1, fig. 1 is a block diagram of a rechargeable wellhead assembly according to an embodiment of the present invention; the method comprises the following steps: a wellhead blowout preventer cap 1, a first blowout preventer 2, a catcher 3, a charging post 4, a second blowout preventer 5, a blow-down valve 6, a return pipe 7 and a pneumatic valve 8, wherein,
the wellhead blowout preventer cap 1 is positioned at one end of the first blowout preventer 2;
two ends of the charging post 4 are respectively connected with the other end of the first lubricator 2 and one end of the second lubricator 5 to charge the plunger;
the other end of the second blowout prevention pipe 5 is provided with a mounting flange to be connected with a gas production tree;
the catcher 3 is arranged on the side of the first lubricator 2 to catch the position of the plunger;
the emptying valve 5 is arranged on the side edge of the second blowout prevention pipe 5;
two ends of the return pipe 7 are respectively connected with the side edge of the first lubricator 2 and the side edge of the second lubricator 5;
the pneumatic valve 8 is arranged at the end of the return pipe 7 to realize a timed well opening and closing.
In the embodiment, a charging column is added in the traditional wellhead device, the lubricator is divided into an upper lubricator and a lower lubricator, namely a first lubricator and a second lubricator, when a plunger runs to the position of the first lubricator through the second lubricator and the charging column, the plunger is captured by a catcher, and then the position of the plunger is locked; then, an external power supply excites the charging column to start charging the plunger; after charging is completed, the catcher is released, and the plunger falls into the well to continue working.
In the embodiment, the wireless charging function of the plunger is realized by adding the charging column, so that the plunger can be charged in time when needed, and the long-time stable work of the plunger can be ensured; simultaneously, the in-process that uses the post that charges to carry out wireless charging only needs to detect and control the position of plunger, need not dismantle whole wellhead assembly to the problem of the wellhead operation degree of difficulty increase that frequent dismouting caused has been avoided.
Referring to fig. 2, fig. 2 is a schematic diagram of an internal structure of a charging post according to an embodiment of the present invention.
In the present embodiment, the charging post 4 includes a charging coil 41, a communication coil 42, a magnetic core 43, a sleeve 44, and a power module 45, wherein,
the communication coil 42 is wound on the magnetic core 43; the wireless connection is realized with the receiving coil in the plunger;
the charging coil 41 is wound on the communication coil 42;
the charging coil 41 and the communication coil 42 are placed inside the sleeve 44 together with the magnetic core 43;
the side wall of the sleeve 44 is provided with a wire outlet hole, and the charging coil 41 is connected with a power module 45 arranged outside the sleeve 44 through the wire outlet hole.
In this embodiment, the charging coil 41 and the communication coil 42 are both formed by winding enameled wires. The coil after the coiling is plugged in the post that charges through threaded connection to lead out the connector lug on the charging coil from the post that charges, the charging wire of drawing forth is connected with external power source module, and continuously provides the energy for the coil.
After the catcher locks the position of the plunger, a transmitting coil prefabricated in the charging column is excited through an external power supply module, namely, a communication coil sends out a wireless signal; the plunger is also internally provided with a processing circuit and a rechargeable battery, and the receiving coil stores the electric energy in the rechargeable battery through the processing circuit after receiving the electric energy.
In the present embodiment, the magnetic core 43 is made of a magnetically permeable material.
Specifically, the magnetically permeable material may be a high molecular polymer having a magnetic permeability.
Further, the high molecular polymer may be polyetheretherketone and polyetherimide.
In this embodiment, the magnetic core 43 has external threads at both ends, and the external threads are connected with the internal threads at both ends of the sleeve 44 in a matching manner.
In this embodiment, the two ends of the sleeve are further provided with external threads to realize the threaded connection between the charging post and the first lubricator and the second lubricator.
In the present embodiment, a buffer device is disposed in the first lubricator 2 for buffering and protecting the plunger.
Preferably, the damping means may be provided as a spring. Referring to fig. 3, fig. 3 is a schematic view of an inner structure of a first blowout preventer according to an embodiment of the present invention.
In the present embodiment, a spring seat 21 and a damper spring 22 attached to the spring seat 21 are provided in the first lubricator 2.
The spring and the spring seat are arranged in the blowout prevention pipe, so that the plunger can be protected in a buffering mode, and the service life of the plunger is prolonged.
In this embodiment, all mechanical connection places all adopt threaded connection, make things convenient for the dismouting to maintain.
Example two
The invention further provides a plunger gas lift drainage gas production system, which comprises a wellhead device and a plunger, wherein the wellhead device is the wellhead device in the embodiment, a receiving coil and a rechargeable battery are arranged inside the plunger, the receiving coil is connected with the rechargeable battery, and the receiving coil and the communication coil are wirelessly coupled to wirelessly charge the rechargeable battery.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A rechargeable wellhead device, comprising: a wellhead blowout prevention cap (1), a first blowout prevention pipe (2), a catcher (3), a charging column (4), a second blowout prevention pipe (5), a blow-down valve (6), a return pipe (7) and a pneumatic valve (8), wherein,
the wellhead blowout prevention cap (1) is positioned at one end of the first blowout prevention pipe (2);
two ends of the charging column (4) are respectively connected with the other end of the first blowout prevention pipe (2) and one end of the second blowout prevention pipe (5) to charge the plunger;
the other end of the second blowout prevention pipe (5) is provided with a mounting flange to be connected with a gas production tree;
the catcher (3) is arranged on the side of the first lubricator (2) to catch the position of the plunger;
the emptying valve (5) is arranged on the side edge of the second blowout prevention pipe (5);
two ends of the return pipe (7) are respectively connected with the side edge of the first lubricator (2) and the side edge of the second lubricator (5);
the pneumatic valve (8) is arranged at the tail end of the return pipe (7) to realize the timing switching of the well.
2. A wellhead device according to claim 1, characterized in that the charging column (4) comprises a charging coil (41), a communication coil (42), a magnetic core (43), a sleeve (44) and a power supply module (45), wherein,
the communication coil (42) is wound on the magnetic core (43);
the charging coil (41) is wound on the communication coil (42);
the charging coil (41) and the communication coil (42) are placed inside the sleeve (44) together with the magnetic core (43);
be equipped with the wire hole on sleeve (44) lateral wall, charging coil (41) pass through the wire hole with set up and be in the outside power module (45) of sleeve (44) are connected.
3. A wellhead device according to claim 2, characterized in that the charging coil (41) and the communication coil (42) are wound from enameled wire.
4. A wellhead as claimed in claim 2, characterised in that the core (43) is externally threaded at both ends and is in mating connection with internal threads on both ends of the sleeve (44).
5. A wellhead as claimed in claim 2, characterised in that the magnetic core (43) is machined from magnetically permeable material.
6. A wellhead as claimed in claim 5, in which the magnetically permeable material is a high molecular weight polymer.
7. A wellhead assembly according to claim 1, characterised in that a damping device is provided within the first lubricator (2).
8. A wellhead as claimed in claim 7, characterised in that the damping means is a spring seat (21) and a damping spring (22) mounted on the spring seat (21).
9. A wellhead as claimed in claim 1, characterised in that the charging string (4) is connected to the first lubricator (2) and the second lubricator (5) by a screw thread.
10. A plunger gas lift drainage gas production system, characterized by comprising a wellhead device and a plunger, wherein the wellhead device is the wellhead device as claimed in any one of claims 1 to 9, the plunger is internally provided with a receiving coil and a rechargeable battery, the receiving coil is connected with the rechargeable battery, and the receiving coil and the communication coil (42) are wirelessly coupled to wirelessly charge the rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128564.2A CN110924890A (en) | 2019-11-18 | 2019-11-18 | Rechargeable wellhead device and plunger gas lift drainage gas production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911128564.2A CN110924890A (en) | 2019-11-18 | 2019-11-18 | Rechargeable wellhead device and plunger gas lift drainage gas production system |
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| Publication Number | Publication Date |
|---|---|
| CN110924890A true CN110924890A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911128564.2A Pending CN110924890A (en) | 2019-11-18 | 2019-11-18 | Rechargeable wellhead device and plunger gas lift drainage gas production system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112234675A (en) * | 2020-10-12 | 2021-01-15 | 贵州航天凯山石油仪器有限公司 | Method for prolonging service life of battery in testing plunger |
| CN112796716A (en) * | 2021-01-29 | 2021-05-14 | 西安安森智能仪器股份有限公司 | Underground intelligent robot system capable of achieving wireless charging and wireless communication |
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