Exploration of Efficient Fracturing and Drainage Technology for Coalbed Methane in Longtan Formation of Southeast Chongqing
Problems such as inadequate coal seam reconstruction,long period of gas production and low yield that existed in the Southeast Chongqing area.In order to improve the efficiency of gas well development,the innovative test,taking the Longtan formation development of well D1 in this area as an example,adopts the large-displace-ment,large-scale,multi-round fracturing technology system with"far support"as the core concept and supple-mented by the drainage system of"starting production after rapid discharge and stabilizing pressure after reaching production target".The research results show that the application of this fracturing technology can significantly im-prove the permeability of the reservoir,and gas is found immediately after pressure completion,and the gas volume increases gradually during the rapid flowback process until it is stable above 5 000 m3/d.
Southeast Chongqing areacoalbed methaneLongtan formationfracturing processdrainage system
国家科技期刊平台
NSTL
万方数据
维普
