Fast and efficient gas-water separating apparatus at well mouth of coalbed methane extraction well

Abstract

The invention discloses a fast and efficient gas-water separating apparatus at the well mouth of a coalbed methane extraction well. The fast and efficient gas-water separating apparatus comprises a water tank (1), a gas-water separating system is arranged in the water tank (1), a water inlet pipe (2) which stretches into the water tank (1) is arranged on the upper portion of the water tank (1), a negative pressure pumping system is arranged on the top of the water tank (1), an automatic drainage system is arranged on the lower portion of the water tank (1), and a sealing system is arranged on the outer side of the gas-water separating system. By means of the fast and efficient gas-water separating apparatus, columnar water is changed into plate-shaped water, processes of impact and smashing are combined with negative pressure pumping and secondary separation technologies, gas and water are separated from each other quickly and efficiently, and the problem of resource waste due to the fact that the gas and the water are difficult to separate is solved. A plurality of wells can share one set of negative pressure pumping system, and thus cost input is saved. Further, the fast and efficient gas-water separating apparatus at the well mouth of the coalbed methane extraction well is small in occupation area, simple to operate, cheap, good in gas-water separating effect and wide in application range.

Description

technical field [0001] The invention belongs to the technical field of coalbed methane safety production, in particular to a fast and efficient gas-water separation device at the wellhead of a coalbed methane drainage well. Background technique [0002] With the increasing demand for energy from economic development and the need for safe production in coal mines, the development of coalbed methane has attracted more and more people's attention. The large-scale development of coalbed methane can not only alleviate the energy crisis, but also reduce the environmental pollution caused by direct gas discharge to a certain extent, and more importantly, reduce the danger of coal and gas outburst in coal mines. With the continuous maturity of coalbed methane development technology and the continuous increase of investment scale, the scale of coalbed methane wells has increased sharply. Coalbed methane mainly occurs in coal reservoirs, and its occurrence characteristics determine t...

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Problems solved by technology

[0003] Aiming at a series of problems such as the difficulty in separating the coalbed methane contained in the water pipeline in the current coalbed methane well drainage process, resulting in waste of resources and increased greenhouse effect, the present invention provides a fast and efficient separation device for gas and water at the wellhead of a coalbed methane well. The coalbed methane contained in the water can be quickly separated and collected for reuse, reducing the waste of resources and the greenhouse effect caused by direct emptying

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