One kind of coalbed methane wells naked eye chemistry method build a cave

One kind of a chemical manufacturing coalbed methane wells naked eye point method, comprising the steps of: selecting vitrinite reflectance <0.6% of the coal reservoir; arrival seam formed by drilling a passage way; alkali solution prepared in the ground, to the injection pump seam along the channel segment, immersion period of time; well cleanup manner collapsed cinder routed back to the ground; repeated immersion well cleanup cycle times and calculated according to the seam of coal fines flowback weight collapsed diameter until the collapsed section is formed seam design? size of caves; organize subsequent production; naked eye and conventional manufacturing method of comparison points, effect test chemical application made pockets. According to the present invention vitrinite reflectance <0.6% of the coal reservoir once the action of an alkali solution, i.e. a large number of organic extraction, drastically reduced mechanical strength of the coal to form a coal dust, coal walls collapse cave is formed, the naked eye Chemistry build a cave method has great significance to increase the size of the cave, near the well to eliminate pollution and reduce construction costs with the naked eye cave.