Abstract: Tarim basin is a depositional basin with abundant oil and gas. Now, this basin is still in low degree of exploration and has great potentials for hydrocarbon prospecting. In Kongquehe area, multiple sets of source rocks developed in Cambrian, Ordovi-cian, Iurassic systems, etc., being as foundations for its hydrocarbon prospecting. This paper presents the analyses of source rock development, structural belt location, local structural development in them, structure-formed periods versus petroleum migration/ac-cumulation, and oil-gas shows in drilled wells. It is suggested that there exist two favorable targets for petroleum prospectingW the first one is Weimark No.2 anticlinal structure on Weimark-Kaiping nose uplift; the second one is Longkou No.5 anticlinal struc-ture in Longkou-Yingnan faulied anticlinal belt.

Key words: Tarim basin, Kongquehe, structure, trap, hydrocarbon prospecting