Hauptman Ham, LLP
Steeply-inclined ultra-thick coal seam gas control method based on binary composite liquid
A steeply-inclined ultra-thick coal seam gas control method based on a binary composite liquid. The method includes taking a clean fracturing fluid system and a microemulsion as a binary composite liquid. The method includes injecting the binary composite liquid into a coal mass by means of a main hydraulic fracturing and permeability improvement method of hydraulic fracturing and water jet slotting to form a coal mass gas extraction system of binary composite liquid fracturing and permeability improvement. The method includes investigating and analyzing a gas control effect of the steeply-inclined ultra-thick coal seam according to change characteristics and analysis of gas extraction flow rate, change characteristics and analysis of permeability coefficient of coal seam, change characteristics and analysis of gas natural desorption speed of coal mass, change characteristics and analysis of gas concentration of return air flow of working face and theoretical analysis of drilling cuttings index.
SHANDONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
E C C E E C E C C C
E21B C09K C09K E21B E21B C09K E21B C09K C09K C09K
inventional inventional inventional inventional inventional inventional inventional additional inventional inventional
Zhiyuan Hao Kunlun Xiangyu Lulu Jianqiang Sanlong Gang
Liu Xu Liu Tang Sun Chen Zheng Wang