Three uplifts(i.e.

Bachu

Katak and Guchengxu)in central Tarim basin show an echelon pattern in distribution from west to east.Their tectonic evolution features in both unity and great differences.The Katak uplift is a typical stable paleo-uplift formed and finalized during the early geological time and slightly reformed and adjusted during the later stage;the Bachu uplift is an active paleo-uplift characterized by late development and formation and is still active at present

and the Guchengxu uplift had undergone a relatively long period of evolution and ceased to change at a late geological time.The structural deformation in the central uplift area features in vertical layering and lateral zonality. The polycyclic tectonic evolution in the Katak uplift and its surrounding slope zone and Bachu-MaiGanTi areas is most likely a process responsible for the complex dynamic relationship among the multiple reservoiring

destruction

preservation

and adjustment.A typical complex hydrocarbon accumulation zone is formed with reservoirs superimposed vertically and lined laterally.Eight hydrocarbon exploration targets or target groups are nailed down in the oil and gas accumulation zone with a flat incumbent "S" shape in the central uplift area and its surrounding areas.