Study on the Faults and Control Mechanism of the Reservoirs in Chaoyanggou oilfield extension and evaluation

According to the oil and gas accumulation characteristic from Chaoyanggou terrace Chang10 Block,through studying the accumulation conditions and major fault development characteristics of each period,system analysis the mechanism of oil source faults and fault concentration belt to oil accumulation.In the end of MingShui have happened to the large-scale fault activity in Chang10 block.By the influence of reversal,fault concentration belt have generally been anticline form,forming Chaoyanggou terrace and Changchunling anticline belt.The oil and gas which Sanzhao sag generated also discharge to Fuyu reservoir along the oil source faults in the end of Mingshui group under overpressure,then migration to Chang10 blocks along the matching of Channel sand body and fault concentration belt,forming the oil-gas migration channels,constitute main tectonic background which rich in oil and gas in fuyu reservoir.