The Researches of Controlling Oil and Gas Enriching Factors and the Next Step Exploration in Wenliu Oilfield

Wenliu Oilfield is a super giant oil-gas field. Owing to distinct factors of hydrocarbon accumulation, the enriched degrees of hydrocarbon accumulation differ greatly in its different structural area. The enriched degree of downthrow block of the fault in East Wenliu is the highest, the bedding fault zone is lower under being controlled by fracture belt; The enriched degree of SL2(L- Lower), S33 and S4 is the highest, but the S2U(U -upper) is the lowest, under being controlled by reservoir and regional cap rock. Being controlled by fault, the hydrocarbon is rich in structural high part as brush shape along the fault. Being controlled by the lithology, the S1, S2U, S32 and S34 reservoir are locally distributed. Therefore the directions of progressive exploration ahead are the both flanks of Wenliu structure, the small fault -block in circumferance of proven reservoir, the south part of Wenliu horst zone, the S1 - S32 lithological phase change zone and the Dongying formation of west Wenliu fracture belt.