Multi-layer stacked gas-bearing system vertical well mining simulation test equipment

Abstract

The invention discloses a multiple superposed gas-bearing system vertical well mining simulating test device, which comprises a box body and a box cover, wherein an extraction pipe is inserted in one end of the box body; a first horizontal pressure head is inserted in the other end of the box body; at least two second horizontal pressure heads are inserted at one side of the box body; vertical pressure heads corresponding to the second horizontal pressure heads in a one-to-one correspondence way are inserted on the box cover; a pressing plate is fixed to the inner end of each pressure head; permeable plates corresponding to the vertical pressure heads in a one-to-one correspondence way are arranged on the inner bottom of the box body; a gas flow channel is arranged under each permeable plate; the extraction pipe comprises an outer pipe fixed on the box body and inner pipes inserted in the outer pipe; extraction areas corresponding to the permeable plates in a one-to-one correspondence way are arranged on the outer pipe; an external extraction hole is formed in each extraction area; a clapboard is arranged between each two adjacent extraction areas; the inner pipes correspond to the extraction areas in a one-to-one correspondence way; an internal extraction hole located in a corresponding extraction area is formed in the inner end of each inner pipe. Therefore, the invention provides the multiple superposed gas-bearing system vertical well mining simulating test device which is convenient and efficient to use.

Description

Technical field [0001] The invention belongs to the technical field of coalbed methane mining, and specifically relates to a multi-layer stacked gas-bearing system vertical well mining simulation test equipment. Background technique [0002] At present, with the continuous economic development, the increasing demand for energy and the increasing shortage of conventional oil and gas resources, countries around the world are actively seeking to develop new energy sources to make up for the gap in conventional oil and gas resources. Coal-bed methane (commonly known as gas) is one of the main factors restricting safe production in coal mines, but it is also a high-quality energy source that can be used in many fields such as power generation, heating, and chemical industries. Therefore, the rational development of coalbed methane resources can not only greatly reduce the occurrence of mining accidents, but also help reduce the national economy’s dependence on conventional oil and gas...

AI Technical Summary

Problems solved by technology

Using this kind of test box and extraction pipe, when extracting multiple coal seams, it is impossible to observe the respective gas flow rates of different coal seams, which is not conducive to the study of the mutual influence between different coal seams, and it is impossible to perform single-layer mining sequentially or progressively. mining test

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