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Rechargeable wellhead device and plunger gas-lift drainage gas recovery system

A wellhead device and charging column technology, which is applied to circuit devices, battery circuit devices, electrical components, etc., can solve the problems that the plunger cannot work stably, disassembly and assembly increase the difficulty of wellhead operations, etc. The effect of maintenance and prolonging the service life

Pending Publication Date: 2020-03-27
XIAN SITAN INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing wellhead device must be disassembled every time it is charged, which makes the plunger unable to work stably for a long time; in addition, frequent disassembly also increases the difficulty of wellhead operations

Method used

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  • Rechargeable wellhead device and plunger gas-lift drainage gas recovery system
  • Rechargeable wellhead device and plunger gas-lift drainage gas recovery system
  • Rechargeable wellhead device and plunger gas-lift drainage gas recovery system

Examples

Experimental program
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Effect test

Embodiment 1

[0039] See figure 1 , figure 1 It is a structural diagram of a rechargeable wellhead device provided by the embodiment of the present invention; it includes: wellhead blowout cap 1, first blowout preventer 2, catcher 3, charging column 4, second blowout preventer 5, and vent valve 6 , return pipe 7 and pneumatic valve 8, wherein,

[0040] The wellhead blowout preventer 1 is located at one end of the first blowout preventer 2;

[0041] The two ends of the charging column 4 are respectively connected to the other end of the first lubricator 2 and one end of the second lubricator 5 to charge the plunger;

[0042] The other end of the second blowout preventer 5 is provided with a mounting flange to connect to the gas tree;

[0043] The catcher 3 is arranged on the side of the first blowout preventer 2 to catch the position of the plunger;

[0044] The vent valve 5 is arranged on the side of the second blowout preventer 5;

[0045] The two ends of the return pipe 7 are respect...

Embodiment 2

[0068] Another embodiment of the present invention also provides a plunger gas lift drainage gas recovery system, including a wellhead device and a plunger, wherein the wellhead device is the wellhead device in the above embodiment, and the plunger is equipped with A receiving coil and a rechargeable battery, the receiving coil is connected to the rechargeable battery, and the receiving coil and the communication coil are wirelessly coupled to wirelessly charge the rechargeable battery.

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Abstract

The invention discloses a rechargeable wellhead device, and the device comprises a wellhead blowout prevention cap, a first blowout prevention pipe, a catcher, a charging column, a second blowout prevention pipe, an emptying valve, a return pipe and a pneumatic valve; the wellhead blowout prevention cap is positioned at one end of the first blowout prevention pipe; the two ends of the charging column are connected with the other end of the first blowout prevention pipe and one end of the second blowout prevention pipe respectively; a mounting flange is arranged at the other end of the second blowout prevention pipe 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 thesecond blowout prevention pipe; the two ends of the return pipe are connected with the side edge of the first blowout prevention pipe and the side edge of the second blowout prevention pipe respectively; and the pneumatic valve is arranged at the tail end of the return pipe. According to the rechargeable wellhead device, the wireless charging of a plunger can be achieved, so the plunger can stably work for a long time, and the problem that the wellhead operation difficulty is increased due to the fact that an instrument is frequently disassembled and assembled is solved.

Description

technical field [0001] The invention belongs to the technical field of natural gas exploitation, and in particular relates to a rechargeable wellhead device. Background technique [0002] The plunger gas lift drainage gas recovery method is a commonly used drainage gas recovery process in natural gas exploitation. It mainly uses the energy of the gas well itself to push the plunger in the oil pipe to lift water, without other power equipment and low production cost. For wells with low efficiency of conventional continuous gas lift or intermittent gas lift, the use of plunger gas lift can improve production efficiency and avoid ineffective consumption of gas. [0003] With the continuous exploitation of natural gas, the energy and gas production efficiency of gas wells are gradually reduced. It is necessary to grasp the temperature, pressure, liquid level and other data in the well in real time. Usually, the acquisition components are integrated into the plunger and go downho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06H02J7/00H02J50/10
CPCE21B33/06H02J7/00H02J50/10
Inventor 孙晓飞周明刚杨琨王振华康学玺王崇峰孙晓文王辉辉
Owner XIAN SITAN INSTR
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