Abstract A novel multilateral well for coalbed methane extraction was proposed in the study. There is a main wellbore at longitudinal center of coal seam and four lateral wells horizontal multilateral-well system. Compared with traditional drainage holes, system has better performance on development. hydraulic-mechanical coupling model established, pressure permeability ratio distribution gas p...

Coal seam gas (CSG), also known as coalbed methane (CBM), is an important source of supply to the liquefied natural (LNG) exporting facilities in eastern Australia and Australian domestic market. In late 2018, became largest exporter LNG world. 29% country’s nameplate capacity three east coast that are supplied primarily by coal gas. Six geological basins including Bowen, Sydney, Gunnedah, Sura...