Modular and cascade development method for underground in-situ conversion of oil-rich coal
A modular, oil-rich coal technology, applied in coal gasification, underground mining, mining fluids, etc., can solve the problems of reducing the comprehensive utilization of oil-rich coal resources, insufficient utilization of coal seams, and easy collapse of cavities, so as to improve resource utilization efficiency, improving resource utilization efficiency, and reducing construction difficulty
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[0037] The present embodiment provides a modularized and stepped development method for underground in-situ conversion of oil-rich coal, the method comprising the following steps:
[0038] Step one, as figure 1 As shown, the oil-rich coal development zone is divided into multiple oil-rich coal blocks;
[0039] Step two, as figure 2 As shown, an injection well 1 and a production well 2 are drilled in each oil-rich coal block, and the injection well 1 and the production well 2 are drilled below the coal seam floor 6. Specifically, the above-mentioned injection well 1 and production well 2 Drilling to 5 meters below the coal seam floor 6, the injection well 1 and the production well 2 are cemented in the whole well section, and temperature sensors are provided on the outside of the casing of the injection well 1 and the production well 2, and the temperature sensors are respectively located on the upper part of the coal seam roof 4 2 meters, the middle of the coal seam 5 and t...
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