The Experiences and Targets for Exploration of Large Oil-Gas Field in Tazhong Area,Tarim Basin

Tazhong uplift is characterized by complex petroleum accumulation,generally bearing oil,enrichment in slope.Its multi-stage structural evolutions and petroleum accumulations/assemblages form Silurian-Carboniferous drape clastic structural-lithologic reservoir,Upper Ordovician sedimentary facies controlling reef reservoir,Ordovician weathering crust reservoir and Cambrian dolomite lithologic reservoir,which are as four major exploration domains.Lower Paleozoic carbonate reservoir is a main target for exploration in Tazhong large oil-gas field.Lower Ordovician weathering crust and Cambrian dolomite will be next significant domains for further prospecting.