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Negative pressure suction drainage gas recovery device

A technology of drainage gas production and negative pressure suction, which is applied in the fields of fluid production, earthwork drilling, wellbore/well components, etc., can solve the problem of high lifting efficiency, and achieve the effect of improving lifting efficiency and meeting technical requirements.

Active Publication Date: 2019-09-10
南充西南石油大学设计研究院有限责任公司
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a negative pressure suction drainage gas recovery device, which can solve the problem of liquid accumulation in the low-pressure and low-production wellbore of the water-bearing gas reservoir, and at the same time, its lifting efficiency is high

Method used

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  • Negative pressure suction drainage gas recovery device

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Embodiment approach

[0017] The present invention also provides another preferred embodiment: the suction port of the jet pump 1 is connected in series with the throttle valve B32 of the Christmas tree 10 through the shut-off valve B82, and the outlet port of the jet pump 1 is connected to the gas-liquid-sand separation system 7 through the shut-off valve C83. The inlet end is connected, the pipeline between the suction port of the jet pump 1 and the throttle valve B32 of the Christmas tree 10, the pipeline between the outlet end of the jet pump 1 and the inlet end of the gas-liquid-sand separation system 7, both pass through The intermediate pipeline of the valve D84 is connected, and one end of the intermediate pipeline is connected to the front end of the shut-off valve B82, and the other end is connected to the end of the shut-off valve C83. During negative pressure suction drainage and gas extraction, open the stop valve B82, stop valve C83, and throttle valve B32, and close the stop valve D84...

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Abstract

The invention relates to a negative pressure suction water drainage and gas production device, and belongs to the technical field of oil and gas field development. The water drainage and gas production device comprises an oil production tree which is connected with a gas conveying pipeline through a throttling valve A, and further comprises a horizontal tank, a multi-cylinder pump, an injection pump and a gas-liquid-sand separation system. A throttling valve B is arranged on the oil production tree. The suck-in opening of the multi-cylinder pump is connected with the horizontal tank. The outlet of the multi-cylinder pump is connected with the injection opening of the injection pump. The suck-in opening of the injection pump is connected with the throttling valve B of the oil production tree. The outlet end of the injection pump is connected with the inlet end of the gas-liquid-sand separation system. The output end of the gas-liquid-sand separation system is connected with the gas conveying pipeline through a check valve A. The water drainage and gas production device can solve the problem of liquid accumulation of a low-pressure low-yield shaft of a water-bearing gas reservoir and is high in gas lift efficiency.

Description

technical field [0001] The invention relates to a negative pressure suction drainage gas recovery device, which belongs to the technical field of oil and gas field development. Background technique [0002] After years of development in the gas field, the formation energy has decreased year by year, and the number of low-pressure gas wells has increased year by year. However, some gas wells show the characteristics of low pressure and low production when they are put into production. If the amount of water is less, fluid accumulation and sand accumulation will occur at the bottom of the well and in the wellbore, resulting in the failure of normal production of the gas well. At present, foam drainage and gas lift technology are widely used at home and abroad to solve the problem of liquid accumulation in low-pressure and low-production wellbore of water-bearing gas reservoirs. The main reasons for the low gas recovery efficiency of bubble drainage and gas lift drainage are: ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00F04F5/10
Inventor 张泉汤林陈伯明
Owner 南充西南石油大学设计研究院有限责任公司
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