School of Petroleum Engineering,China University of Petroleum(Beijing)Coalbed Methane Research Center,China University of Petroleum(Beijing)

二十多年来我国煤层气开发取得了重大突破,在保障煤矿安全、缓解能源压力等方面发挥了重要作用。综述了我国煤层气开发历程和现状,概括总结了煤层气钻完井技术、压裂增产技术、排采技术、数值模拟技术等方面取得的进展和发展趋势:井型多样化、复杂结构化;压裂规模化;排采智能化;钻完井压裂用液多元化。同时,提出了今后我国煤层气开发技术的重点在于研究适宜规模开发区(高煤阶)的稳产高产技术、中煤阶区的钻压采技术、低煤阶区的煤层气勘探开发关键技术和松软低渗透煤层的规模高效抽采关键技术。最后提出我国煤层气开发技术总体上仍处于起步阶段,依然面临许多难题,需要进一步创新突破。

over the past 20 years,great breakthrough has been made in CBM development in China,and played an imporant role in guaranteeing coa-mine saeyand alleviating energy pressure.CBM development history and curent sitation in China were revie ed.Progrss and 'rend ondriing.rcturing production and numerital simulaion technologies in China's CBM development were summaized: diversifid and complicated well ypes huger frcturing scale nteligentized producton and puralstic liouic.Key points in future CBM development in China were proposed which are poduction maintainin and enmhancing techmnologes for hig h-rank coalreservoirs.drlling and fracturing technologies for mid-rank coal reservirs key exploration and production technogies fr ow-ank coalresevoirs and key productie techrologes for sot and low-ermeablitycal reservoirs.The CBM development in China is tll in early stages.fces many chall nges and necds further innovation and breakithrough.

国家科技重大专项基金资助项目(2011ZX05062)；