Coal seam gas shale gas as two different unconventional gas

Coal seam gas development approach used is pressure depletion method,shale gas mining technology, including horizontal well technology and multi-fracturing, water fracturing, repeated fracturing technology and the latest technology to synchronize fracturing, although adsorption and the simultaneous presence of gas in free phase, but the development of shale gas does not need to drain down. With the rapid development of coalbed methane industry, shale gas development has entered a rapid development period. As two
different unconventional gas, coal bed methane and shale gas in the formation of the gas source, and many commonalities and differences exist reservoirs etc.