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Using the methods of oil-testing and fracturing test, fluid composition, production dynamics and material balance analysis, the authors have studied the oil and gas distributions of Ying ��, Ying ��, Ying �� and Ying �� reservoirs in Yingcheng Formation of Shiwu oilfield. The results show that the gas reservoirs developed in northern Shiwu reverse fault are distributed in the both sides of Bawu fracture; the Ying ��and Ying ��reservoirs developed in Well D3 and B7 areas of northern Shiwu reverse fault; the Ying �� and Ying ��reservoirs developed in eastern Shiwu oil field and distributed in Well A24, A25, A16 and A11 areas of the both sides of Shiwu reverse fault; while the oil and gas reservoirs are distributed only in few areas of the south and north.