Research on the technology of high efficient to drainage CBM by multistage fracturing in horizontal well along the roof of broken soft and low permeability coal seam
Jia Jian-cheng,Chen Chen,Dong Kui,Wu Yan,Wu Min-jie
Natural Gas Geoscience . 2017, (12): 1873 -1881 .  DOI: 10.11764/j.issn.1672-1926.2017.11.014