DISTRIBUTING CHARACTERISTICS OF SEDIMENTARY FACIES BELTS AND SANDSTONE BODIES OF JURASSIC IN TURPAN-HAMI BASIN

Alluvial fan, fluvial, lake, fan delta, braid river delta and meandering river delta facies sediments are widely developed in Jurassic in Turpan-Hami basin. The good reservoir sandstone bodies include the facies belts of underwater distributary channel of braid deltas front, underwater distributary channel of fan deltas front, stream channel bar of braid river and beach sands of shore shallow-lake in middle Jurassic (Xishanyao Formation, Sanjianfang Formation, Qiketai Formation). Its vertical development and lateral spreading will be an important subject of oilfield exploration in the future.