Carbonate reef-bank reservoirs have been the current hot spot of oil and gas exploration in Tarim Basin. Taking the Shihuiyao and Dawangou outcrop profiles in Keping Area of Tarim Basin as the examples, the intraplatform shoal petrographic constitute and sequence stratigraphic features in Ordovician Yingshan Formation are deeply compared, based on which, the controlling factors of intraplatform shoal strata development are analyzed. The results show that 1) there are some differences on Yingshan Formation development in Shihuiyao and Dawangou Areas; 2) the sequence characteristics of retrogradation in Shihuiyao Area and aggradation in Dawangou Area reflect that the sea-level change has different control actions in different microtopography fields; and 3) the two intraplatform shoal sedimentary styles of Yingshan Formation in Keping Area may become the favorable targets for oil and gas exploration.
