There are many oil-and gas-bearing series in Tarim basin

and the currently discovered oil and gas reserves are mainly distributed in Ordovician

Carboniferous and Triassic reservoirs.The basin has experienced multiphase tectonic movements

leading to the formation of 3 large paleohighs.Analyses of Tahe oilfield

Hadexun oilfield and Tazhong 11 well oil reservoir show that the matching of distribution of source rocks and hydrocarbon generation history with the paleohighs and paleo-slopes are the main factors controlling formation and distribution of oil and gas reservoirs.The oil and gas reservoirs in the basin are characterized by multiphase reservoiring and adjustment.The existing Paleozoic oil reservoirs have mainly been formed in Late Hercynian

and adjustment of the early oil reservoirs and formation of the secondary oil and gas reservoirs have mainly occurred in Himalayan.Oil and gas are enriched under regional cap rocks

above and below unconformity and in the periphery of fracture belt.Based on analyses of the reservoiring characteristics and conditions of Tahe oilfield

Hadexun oilfield and Tazhong 11 well oil reservoir

it is pointed out that future exploration would be targeted at the Paleozoic carbonate buried hill

and Carboniferous

Silurian and Triassic clastic rock oil and gas reservoirs.