A wellhead depressurization gas production device

By using the wellhead depressurization gas production device, static pressure energy is converted into kinetic energy through the turbulent diffusion effect of the jet boundary layer, realizing gas flow mixing and energy transfer. This solves the problem of low production in high-pressure gas wells, increases gas production, and sludge removal is achieved through the sand removal component, simplifying the operation process.

CN117662082BActive Publication Date: 2026-05-26PETROCHINA CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Filing Date
2022-08-29
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Excessive pressure at the wellhead of a high-pressure natural gas well leads to reduced well production. Existing technologies are insufficient to effectively reduce wellhead oil pressure to overcome back pressure in the main pipeline, thus affecting normal well production.

Method used

The wellhead depressurization gas production device includes an intake connection assembly, a working cylinder, and an outlet connection assembly. It provides a gas source through the power gas inlet connection assembly and uses the jet boundary layer turbulent diffusion effect to convert static pressure energy into kinetic energy. Combined with the intake through-hole and parameter adjustment assembly, it realizes gas flow mixing and energy transfer, reduces wellhead oil pressure, and increases gas well production.

Benefits of technology

It effectively reduces wellhead oil pressure, increases gas production in gas wells, solves the problem of low production in high-pressure gas wells, and achieves sand removal through a sand removal component. The device has a simple structure and is easy to operate.

✦ Generated by Eureka AI based on patent content.

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    Figure CN117662082B_ABST
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Abstract

This invention discloses a wellhead depressurization gas production device, relating to the field of natural gas extraction technology, which solves the technical problem of existing oil pressure affecting gas well production. The device includes a suction inlet connection assembly, a working cylinder, and a discharge outlet connection assembly connected in sequence. The working cylinder includes a separation joint, a parameter adjustment assembly, and a limiting short-circuit connected in sequence. A venting groove communicating with the parameter adjustment assembly is opened in the middle of the separation joint near its end. A discharge joint is sleeved on the limiting short-circuit. A suction port is opened on the outer wall of the parameter adjustment assembly. A power gas inlet connection assembly is vertically connected to the separation joint, and the power gas inlet connection assembly communicates with the venting groove. The separation joint has a suction through-hole along a direction parallel to the axis, with one end communicating with the suction inlet connection assembly and the other end communicating with the gap between the borehole outer cylinder and the parameter adjustment assembly. This invention can reduce wellhead oil pressure, thereby reducing bottomhole flowing pressure, amplifying pressure differential, and increasing gas well production.
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