Gas well drainage gas recovery device and method

• Main Authors: DONG XIAOYI, ZHONG HAIQUAN, ZHENG CHUANGEN, YANG JIAN, ZHAO LIKANG
• Format: Patent
• Language: Chinese; English
• Published: 19.01.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention provides a novel gas well drainage gas production device and method. The novel gas well drainage gas production device comprises a compressor, a gas storage tank, an automatic feeding device, a gas production tree, a pressure meter, a sleeve, an oil pipe, a solid and fluid separation device, a material recovery tank, a switch valve, a one-way valve, a packer, a gas lift valve, an expansion material and other devices and components. The method is used when the gas well has the liquid accumulation risk, a special expansion material is put into a shaft, the expansion material is expanded by dozens of times or even hundreds of times when encountering accumulated liquid, finally, the expansion material is gathered in an in-pipe area above a one-way valve at the bottom of an oil pipe, a section of columnar aggregate similar to a plunger is formed, and when the gas well is opened for production, the liquid can be lifted and carried out; the method can be applied to a drainage gas recovery process, effe