A single-well drainage and recovery surface device for a double-layer stacked coalbed methane system

Abstract

The invention discloses a ground device for drainage and recovery of a single well in a double-layer stacked coalbed methane system, including a power device, a production device and a control device. The control device transmits electric energy for the power device and monitors the work of the entire ground device. The power device will The electrical energy is converted into kinetic energy and the kinetic energy is transferred to the production device, and each component of the production device is connected with the underground drainage device at the head of the drainage well. This device has the characteristics of a high degree of automation. The start-up, parameter adjustment, and shutdown of the power plant can be finely regulated by the control device using a hand-held remote control. The drainage information in each stage can be realized remotely, and the power device can be used to drain the water in the coal seam of each coalbed methane system at a speed most suitable for the reservoir characteristics of each coalbed methane system, and then release the water in each coalbed methane system. reservoir capacity.

Description

technical field [0001] The invention relates to the technical field of coal-bed methane development, in particular to a single-well drainage and production ground device for a double-layer stacked coal-bed methane system. Background technique [0002] At present, the large-scale development of my country's coalbed methane is still mainly concentrated in the eastern margin of the Ordos Basin and the Qinshui Basin, and the number of coalbed methane wells in the corresponding blocks is close to saturation. In order to find new commercial development blocks, my country's coalbed methane The area with multiple coal seams in the east and west of Guizhou and the low coal rank area in the Junggar Basin in Xinjiang expanded. Among them, the coalbed methane resources in eastern Yunnan and western Guizhou are huge and have resource conditions for large-scale development. It has been a hot spot in the field of coalbed methane research for a period of time, and it is also an important cap...

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Problems solved by technology

[0004] Based on this, the patent document CN109973058A, titled "A Single Well Drainage Device and Drainage Method for a Double-layer Stacked Coalbed Methane System" proposes the separation of single wellbore and double drainage channels in the double-layered stacked coalbed methane system area. The layer drainage method can provide assistance for the research of interlayer or intersystem interference, and can also achieve the purpose of releasing the production capacity of coal reservoirs in the double-layer superimposed coalbed methane system area in a more economical situation. The ground part of the single well drainage device of the stacked coalbed methane system is described in detail, so it is still necessary to complete

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