Abstract:

China's condensate gas pools are mainly distributed in Bobal Bay, Tarim, Turpan-Hami Basins, the East and South China coastal regions.The total reserve of the condensate gas is about 4 000 ×10⁸ m³, which is one third of total natural gas reserve.The gas pools are primarily formed from terrigenous parent materials and coal, the pools formed from lacustrine or marine sapropelic hydrocarbon-forming systems are seldom.The internal factor of condensate gas pool enrichment is humic or near humic source rocks.Excepting geological conditions needed by conventional gas pools, the condensate gas pools need temperature ranging from 70℃ to 130℃ , and pressure of 30～60 MPa.According to synthetic analysis, the target areas of condensate gas exploration should be Tarim, Turpan and Hami Basins in Xinjiang, the rift systems in Northeast China and inner Mongolia, the rift basins in the East China, the South China, the East China and Bobal Bay regions.