Abstract: In Kongquehe area of the Tarim Basin, the identification of the effective source rocks is carried out on the basis of the existence of the potential source rocks. Paleozoic dark mudstone, limestone and marl and Mesozoic dark mudstone, coal seam are potential source rocks. When the potential source rocks are of features of TOC>0.5%, 0.5%O<4.0%, they will be effective source rocks. On the well, effective source rocks can be identified exactly by the geochemical parameters. Effective source rocks were formed in marsh, floodplain and lake in Jurassic and in shelf, half-deep-sea and basin in Cambrian and Lower Ordovician. An effective sedimentary environment model for the source rocks can be set up and be applied in the area in the between of the wells to get a distribution map of the effective source rocks. Reconstructed paleotemperature will help to eliminate immature or overmature source rocks and to define the range of the effective source rocks further. This method of identifying effective source rocks has been applied in Kongquehe area of the Tarim basin and is proven to be feasible by a new well.

Key words: 塔里木盆地, 孔雀河地区, 有效烃源岩, 潜在烃源岩, 有机碳含量, 有机Tarim Basin, Kongquehe area, effective source rocks