Formation conditions and exploration direction of large and medium gas reservoirs in the Junggar Basin, NW China

HU Suyun,WANG Xiaojun,CAO Zhenglin,LI Jianzhong,GONG Deyu,XU Yang

Table 1 Parameters of the discovered gas fields (reservoirs) in the Junggar Basin.

Name of gas fields (reservoirs) Type of natural gas Gas reservoir type Formation of gas-source rock Proven reserves/108 m3 Discovery date Xiazijie Oil-type gas Associated gas Fengcheng Formation 44.97 1983 Santai Coal-type gas Associated gas Carboniferous, Jurassic 27.35 1988 Karamay Mixed gas Associated gas Fengcheng Formation 214.87 1991 Dushanzi Coal-type gas Associated gas Jurassic 4.88 1994 Shixi Coal-type gas Associated gas Lower Wuerhe Formation 20.15 1995 Chepaizi Mixed gas Associated gas Lower Wuerhe Formation 6.12 1995 Shinan Coal-type gas Associated gas Lower Wuerhe Formation 6.89 1997 Wucaiwan Coal-type gas Gas layer gas Carboniferous 8.33 1997 Xiaoguai Mixed gas Associated gas Jiamuhe Formation, Lower Wuerhe Formation, Fengcheng Formation 20.20 1998 Mobei Coal-type gas Associated gas Lower Wuerhe Formation 93.56 1999 Hutubi Coal-type gas Gas layer gas Jurassic 146.22 1999 Mosuowan Coal-type gas Gas layer gas Lower Wuerhe Formation 119.20 2001 Hongshanzui Mixed gas Associated gas Jiamuhe Formation, Lower Wuerhe Formation 1.31 2001 Cainan Coal-type gas Associated gas Carboniferous 26.85 2002 Luliang Biodegraded gas Associated gas Lower Wuerhe Formation 10.81 2006 Kelameili Coal-type gas Gas layer gas Carboniferous 1115.63 2008 Mahe Coal-type gas Gas layer gas Jurassic 167.66 2008 Jinlong Mixed gas Associated gas Jiamuhe Formation, Lower Wuerhe Formation, Fengcheng Formation 57.50 2014