A gas recovery device for a low-pressure high-liquid gas well

Abstract

The invention relates to a gas recovery device for a low-pressure high-liquid gas well. The gas-liquid separator (4) from the wellhead of the device is connected with the external separator (18) by the pipeline A (19), and the single-flow automatic regulating valve B (9) is installed on the pipeline A (19). The pipeline (19) between the wellhead gas-liquid separator (4) and the single-flow automatic regulating valve B (9) is connected with a pipe (20) by a tee, and a single-flow automatic regulating valve is installed on the pipe (20) A(6), the end of the tube (20) is connected with a pressure-stabilizing airbag (7), and the pressure-stabilizing airbag (7) is connected to a compressor (10) through a pipeline, and the compressor (10) is connected to the single-flow automatic The pipeline A (19) between the regulating valve B (9) and the output separator (18) is connected, and a check valve (12) is installed on the pipeline B (21). The device completes automatic and continuous gas extraction, and has the characteristics of simple device, stable and reliable performance.

Description

Technical field: [0001] The invention relates to a surface gas recovery device in the field of gas recovery in oil and gas fields, in particular to a gas recovery device for a low-pressure high-liquid gas well. Background technique: [0002] At present, the exploitation of natural gas wells mainly uses the natural pressure of gas wells to directly input natural gas into the gas production system and then transport it to the destination through gathering and transportation pipelines. As the production time of the gas well extends, the reserves gradually decrease, and the formation pressure, bottom hole pressure, and wellhead pressure all decrease continuously. More than 40% of the reserves have not yet been recovered. Therefore, in order to complete the recovery of this part of the reserves, it is necessary to reduce the wellhead back pressure and increase the export pressure through certain means, so as to maximize the use of natural gas resources. [0003] Although the ex...

AI Technical Summary

Problems solved by technology

[0004]1. The device system is complex and has high requirements for the space environment;

[0005]2. There are many wearing parts of the device and the maintenance is difficult;

[0006]3. The operating conditions of the compressor are adjusted frequently, and the reliability of the self-control for stable operation of the system is low

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