A real-time sampling device for coalbed methane production well packing methane detection and its application

Abstract

The invention provides a real-time sampling device for detection of methane at a packing of a coalbed gas production well and application thereof. The sampling device is a columnar methane trapping device, wherein the columnar methane trapping device is formed by combining a left half column body and a right half column body in a sealing way; one side of each of the two half column bodies is connected by a hinge at the sealed combining part, and the other side of each of the two half column bodies is connected by an openable latch to form the columnar methane trapping device in a sealed combining way; each of the two half column bodies is respectively provided with an upper bottom surface and a lower bottom surface, and the inner edge line of the upper bottom surface or the lower bottom surface of each of the two half column bodies is respectively provided with a groove; after the two half column bodies are combined in a sealing way, the grooves on the inner edge lines of the upper bottom surfaces of the two half column bodies are combined into a circular hole, and a water suction rod of an oil pumping unit penetrates through the circular hole; the grooves on the inner edge lines of the lower bottom surfaces of the two half column bodies are combined into the other circular hole, and a casing of the production well penetrates through the circular hole. The real-time sampling device for detection of methane at the packing of the coalbed gas production well has the advantage that the field detection is rapid, quick and real-time.

Description

technical field [0001] The invention relates to a real-time sampling device suitable for detecting methane in coalbed methane production well packing, and belongs to the technical field of methane gas leakage and escape detection in the coalbed methane development process. Background technique [0002] With the increasing development of unconventional oil and gas resources in my country, the development and utilization of coalbed methane resources have made outstanding contributions to my country's energy security. At the same time, the leakage and dissipation of methane-based greenhouse gases during the development of coalbed methane have also attracted widespread attention from scholars, and its clean energy attributes have also been questioned. [0003] Coalbed methane refers to the hydrocarbon gas stored in coal seams with methane as the main component, commonly known as "gas" gas, and is an associated mineral resource of coal. Coalbed methane is buried in coal seams hu...

AI Technical Summary

Problems solved by technology

Because when the coalbed methane production well is working, the pumping rod is always in the process of reciprocating up and down. When using the above-mentioned method for methane detection, it is difficult to form an effective methane capture space because materials such as plastic films are easily affected by airflow, pressure and other environments. , and prone to methane gas leakage, coupled with time-consuming and laborious operation, this method is difficult to guarantee the convenience, rapidity and real-time performance of the methane detection results of coalbed methane production well packing

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