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Gas well auxiliary liquid carrying system

A technology for gas wells and gas-liquid separation devices, which can be used in wellbore/well components, production fluids, earth-moving drilling, etc., and can solve the problems of limited economic benefits and high energy consumption.

Active Publication Date: 2018-03-13
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can be applied to the production of various types of gas wells, but in the process of depressurization and boosting, the energy consumption is increasing, and its economic benefits are limited

Method used

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Embodiment Construction

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0022] Please refer to figure 1 , the embodiment of the present invention provides a gas well auxiliary liquid carrying system, which is used to collect the gas in the gas well 1, and control the amount of liquid accumulation in the gas well 1, so as to prevent the gas well from reducing production or even shutting down due to the increase of liquid accumulation, mainly including Gas well 1 and gas-liquid separation device 2.

[0023] The gas well 1 is a gas well, and the middle area or the lower end area in the gas well 1 has a gas-liquid mixture, and the gas-liquid mixture flows into the wellbore from the oil and gas reservoir 12 due to the pressure difference. Tree 11, one is to facilitate the extension of oil pipe 41 and return pipe 42 into the gas ...

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Abstract

The invention provides a gas well auxiliary liquid carrying system comprising a gas well and a gas-liquid separating device. A Christmas tree is plugged at a well mouth of the gas well, and the gas-liquid separating device comprises an input end, a first output end and a second output end. One end of an oil pipe penetrates through the Christmas tree and stretches into the gas well, and the other end of the oil pipe is connected with the input end. One end of a return pipe penetrates through the Christmas tree and stretches into an oil gas reservoir in the gas well, and the other end of the return pipe communicates with the first output end through a blower pump. A one-way valve which only allows a gas flow to flow to the gas well from the blower pump is arranged on the return pipe and located between the blower pump and the Christmas tree, the second output end is connected with a remote gas storing end through a gas delivery pipe so as to deliver gas to the gas storing end, and a liquid discharging pipe is arranged at the lower end of the gas-liquid separating device and downwards connected to a stop valve. The gas well auxiliary liquid carrying system has the beneficial effects that the cost is low, the applicability is wide, gas production can be circularly and continuously conducted, and meanwhile gas-liquid sufficient separating can be achieved.

Description

technical field [0001] The invention relates to the technical field of gas production engineering, in particular to an auxiliary liquid-carrying system for a gas well. Background technique [0002] It has been discovered that in gas reservoirs and condensate gas reservoirs at home and abroad, whether they are conventional gas reservoirs, tight sandstone gas reservoirs or shale gas reservoirs, there will be different degrees of primary water or edge and bottom water, while in condensate gas reservoirs, In addition to formation water, there is also condensate oil that is reverse condensed by pressure reduction. With the development of a gas well, its gas production will decrease year by year, and the decline in gas production will lead to a decrease in the liquid-carrying capacity of the gas well, which will form liquid accumulation at the bottom of the well, increase the back pressure at the bottom of the well, and may further form in the reservoir near the wellbore. The phe...

Claims

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Application Information

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IPC IPC(8): E21B43/34E21B43/40
CPCE21B43/34E21B43/40Y02E10/10
Inventor 李龙龙潘琳陈叔阳李宗宇高悦凯李敏齐
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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