Single-tube jet pump liquor drainage technology method for normal-pressure shale gas well

A technology of shale gas wells and process methods, which is applied in the direction of production fluid, earthwork drilling, wellbore/well components, etc., and can solve the problems of easy erosion damage of hydraulic jet pumps, low drainage efficiency of electric submersible pumps, power fluid Problems such as high injection pressure, to achieve the effect of improving the efficiency of liquid drainage and gas production, reducing the problem of liquid level commissioning, and large liquid drainage
CN108868698AInactive Publication Date: 2018-11-23中国石油化工股份有限公司华东油气分公司采油气工程服务中心
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
中国石油化工股份有限公司华东油气分公司采油气工程服务中心
Publication Date
2018-11-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a single-tube jet pump liquor drainage technology method for a normal-pressure shale gas well. In the method, firstly, a packer assembly and a jet pump cylinder are lowered into the well through an oil tube; then a jet pump core is put into the oil tube and pushed into the jet pump cylinder through well flushing, direct-cycle well flushing production is performed, and a single-tube jet pump liquor drainage device is formed. With the oil tube being a power liquor injecting tube, an annulus is formed between the oil tube and a production casing to be used as a mixed liquor discharging tube; in this way, rapid liquor drainage is realized for the normal-pressure shale gas well.
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Description

Technical field

[0001] The invention relates to a process method for discharging liquid from a single-tube jet pump in an atmospheric shale gas well. Background technique

[0002] After normal pressure shale gas wells are completed and put into production, they cannot spontaneously produce gas. In the prior art, electric submersible pump discharge or double-pipe jet pump discharge is used to produce gas. However, electric submersible pump discharge has the disadvantages of low discharge efficiency and difficult maintenance. ; Double-tube jet pump discharge has the disadvantages of high power fluid injection pressure, high requirements for ground equipment, and easy erosion and damage of the hydraulic jet pump. Summary of the invention

[0003] The purpose of the present invention is to provide an atmospheric shale gas well single-tube jet pump discharge process method that can meet the requirements of rapid discharge of atmospheric shale gas wells.

[0004] The technical scheme of ...

Claims

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