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

A technology for surface installation and coalbed methane, which is applied in the fields of fluid extraction, earth-moving drilling, wellbore/well components, etc. It can solve problems such as detailed instructions, and achieve the effect of improving automation and high degree of automation.

CN110714739BActive Publication Date: 2021-09-24CHINA UNIV OF MINING & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2021-09-24

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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.
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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...

Examples

Embodiment Construction

[0024] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments, which are only used to explain the present invention and do not limit the protection scope of the present invention.

[0025] Such as figure 1 , 2 As shown in and 3, a double-layer superimposed coalbed methane system single well drainage surface device includes a power device 15, a production device 16 and a control device 6, and the control device 6 transmits electric energy for the power device 15 and monitors the entire surface device The power unit 15 converts electrical energy into kinetic energy and transmits the kinetic energy to the production unit 16, and each component of the production unit 16 is connected with the underground drainage unit at the drainage wellhead 11.

[0026] In the above embodiment, the production device 16 includes an outer casing head spool 8f for connecting t...