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Gas lift well liquid drainage simulation test device and testing method

A technology of simulation test and gas lift well, which is used in earth-moving drilling, wellbore/well components, production fluid, etc., and can solve the problems of inability to discharge wellbore liquid, low liquid discharge efficiency, and mismatch of operating parameters.

Active Publication Date: 2017-03-08
CHINA PETROLEUM & CHEM CORP +1
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the setting parameters of the gas lift valve on the gas lift drainage pipe string do not match the actual well operating parameters, resulting in low drainage efficiency, or the wellbore liquid cannot be discharged, etc., to provide a gas lift well drainage Liquid simulation test device

Method used

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  • Gas lift well liquid drainage simulation test device and testing method
  • Gas lift well liquid drainage simulation test device and testing method
  • Gas lift well liquid drainage simulation test device and testing method

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Embodiment Construction

[0024] Attached below figure 1 The present invention will be further explained.

[0025] by figure 1 It can be seen that the gas lift well drainage simulation test device is composed of a wellbore simulation system, a liquid supply system, a gas supply system and a temperature and pressure control device;

[0026] The wellbore simulation system is a wellbore composed of casing 1, tubing 2, gas lift valve, screen 3, packer 4, and sand packing tube 5. The sand packing tube 5 is a cylindrical tubular body filled with simulated reservoirs. The sand, sand filling pipe 5 is installed on the base of the drainage simulation experiment device, the casing 1 is sleeved in the sand filling pipe 5, the bottom pipe wall is opened with a through hole connected with the sand filling pipe 5, and the oil pipe 2 is installed in the casing In 1, the string of tubing 2 is sequentially installed with packer 4, screen 3, and 3-stage gas lift valve from bottom to top;

[0027] The liquid supply system in...

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Abstract

The invention relates to a gas lift well liquid drainage simulation test device and a testing method and belongs to the technical field of oil and gas field gas lift well liquid drainage. The gas lift well liquid drainage simulation test device comprises a shaft simulation system, a liquid supplying system, an air supplying system and a temperature pressure control device. In the gas lift well liquid drainage simulation testing method, testing parameters of the liquid drainage test device are set according to a practical production well condition, and a gas lift well liquid drainage simulation test device is built; testing parameters of the liquid drainage simulation test device are adjusted according to an operation condition of the liquid drainage simulation test device; and practical operation parameters of the practical production well are determined. The beneficial effects are that based on open and close work conditions of a gas lift valve in the shaft simulation system, a process of a liquid level in the shaft simulation system decreasing with the gas lift valve work condition step by step is observed and operation parameters of the gas lift valve in the shaft simulation system are adjusted; and operation parameters of the gas lift valve in the practical production well are determined, so the gas lift valve can remain an optimal state and accumulated liquid in the shaft can be discharged step by step.

Description

Technical field [0001] The invention relates to a gas lift well drainage simulation test device and a test method, and belongs to the technical field of gas lift well drainage in an oil and gas field. Background technique [0002] At present, most of the production string of oil and gas wells uses 2 7 / 8 "In the production of bare tubing, some oil and gas wells have entered the low-pressure production stage. The formation pressure and the productivity of gas wells are gradually reduced. The oil and gas wells have poor fluid carrying capacity and fluid accumulation in the wellbore. When the fluid accumulation is severe, the production well will stop production. To carry out drainage production in time, the commonly used gas lift well drainage process is: natural gas, nitrogen and other gases are injected into the annulus of the oil jacket through surface pressurization equipment, and the liquid in the annulus of the oil jacket is driven by the high-pressure gas through the tubing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00
CPCE21B43/168
Inventor 袁晓贤王选奎魏鲲鹏魏瑞玲万龙陈灿张贵芳吴小丁陈献翠
Owner CHINA PETROLEUM & CHEM CORP
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