High pressure gas well completion test recovery natural gas system

Abstract

The invention provides a high pressure gas completion testing and natural gas recovery system. The high pressure gas completion testing and natural gas recovery system is characterized in that the high pressure gas completion testing and natural gas recovery system comprises a high pressure separator, a pressure relief device, a low pressure separator, a gas storage device, a liquid storage deviceand an ignition device; a Christmas tree device is sequentially connected with the high pressure separator, the pressure relief device, the low pressure separator and the liquid storage device; the high pressure separator performs the first gas-liquid separation on the gas-liquid mixture from the Christmas tree device; the pressure relief device performs a pressure relief operation on the first separated liquid; the low pressure separator performs the second gas-liquid separation of the first separated liquid; the gas storage device stores the gas acquired after the first gas-liquid separation; the liquid storage device stores the liquid after the second gas-liquid separation; the ignition device ignites the gas after the second gas-liquid separation. With a two-stage separator adopted and the gas separated by the high pressure separator stored in a gas storage tank, the high pressure gas completion testing and natural gas recovery system has the advantages of needing no compressor topressurize low pressure line gas to the pressure of high pressure gathering pipeline network, and enabling the system process to be simple.

Description

technical field [0001] The invention relates to the technical field of natural gas gathering and transportation, in particular to a high-pressure gas completion test recovery natural gas system. Background technique [0002] When the natural gas is emptied, the operator switches the valve of the incoming gas pipeline with water blockage in the gas gathering station, and guides it to the torch outside the gas gathering station for ignition. The liquid or hydrate in the pipeline and the natural gas are separated from the gas and liquid through the separation tank outside the gas gathering station. The hydrate or the liquid is automatically deposited under the separation tank by gravity, and the natural gas is guided from the top of the separation tank to the flame to be ignited and vented. When the accumulated fluid is emptied, the operator switches the valve in the station to resume normal production. The advantage of this operation method is that it is simple to operate, sa...

AI Technical Summary

Problems solved by technology

Although the natural gas has been recovered, there are obvious shortcomings, including: the process is complicated. The current method of depressurization and separation in the ground test mining process, and then pressurized and exported, not only greatly increases the complexity of the process, but also increases the scope of on-site risk management and control.

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