Coalbed methane downhole fuel cell heating equipment

Abstract

The invention belongs to the field of coal gas mining equipment and particularly relates to coalbed methane downhole fuel cell heating equipment. The equipment comprises a heating device and guiding devices. The heating device comprises a clamping mechanism, a fuel cell cabin and a resistance wire containing cabin which are used for making contact with the well wall of a gas well and arranged from top to bottom; a fuel cell is arranged in the fuel cell cabin; and one ends of an air input pipe, an oxidizer input pipe and a methane input pipe are located on the outside world, and the other end of the air input pipe, the oxidizer input pipe and the methane input pipe penetrate through the clamping mechanism to be connected with the fuel cell. The guiding devices are pipeline robots connected with resistance wires in the resistance wire containing cabin. A water pipe penetrates through the clamping mechanism, the fuel cell cabin and the resistance wire containing cabin, and the two ends of the water pipe are exposed to the outside world. According to the coalbed methane downhole fuel cell heating equipment, enough heat can be provided for a hot injection and production coalbed, the characteristics of long in heat injection time, low in heat dissipation and high in energy utilization ratio are achieved, the efficiency of coalbed methane hot injection and production can further be increased, and the output of coalbed methane mining is increased.

Description

technical field [0001] The invention belongs to the field of coal gas mining equipment, and in particular relates to coal bed gas underground fuel cell heating equipment. Background technique [0002] In recent years, coalbed methane is a very high-quality and clean new energy source. Coalbed methane is mainly in the state of adsorption in coal seams. However, in my country's coalbed methane storage, most of them are in the situation of "high reserves and difficult to mine". How to improve the permeability of coalbed methane, make coalbed methane be extracted from coalbeds quickly, increase the production of coalbed methane, and expand the economic benefits of coalbed methane development have become the hot and difficult points in the current research on coalbed methane mining. [0003] The traditional hydraulic fracturing method has a good effect on the exploitation of coalbed methane in a short period of time, but with the increase of time, the decrease of permeability and...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a coalbed methane downhole fuel cell heating equipment. Aiming at the problems of poor energy utilization rate, fast heat dissipation and uncontrollable heating time in the existing thermal injection production technology, the present invention can improve thermal injection coal mining The layer provides enough heat, and has the characteristics of long heat injection time, slow heat dissipation and high energy utilization rate, which can further increase the thermal injection and production efficiency of coalbed methane and increase the output of coalbed methane mining

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