The late inversion of the basement pre-existing reverse faults controls the formation of a horst structural style in Haian Sag of Subei Basin.The superimposed transformation of right-lateral torsional stress field in the Himalayan period has formed a tectonic pattern of multiple concave and twisting horst.The tectonic controlling on the oil reservoir and trap is obvious:the differential subsidence of the basement controls the evolutionary differences of hydrocarbon source rocks in the second member of the Funing Formation in the Paleogene;under the control of the main body of sedimentary facies,the secondary faults of the same sedimentary affect the distribution and development of sandstone reservoirs in the third member of the Funing Formation;under the conditions of the late reservoir formation,the long-term active faults are favorable pathways for oil and gas migration;the structural transfer zone is a favorable area for traps developing and the hydrocarbon accumulation.
structural featuresstructural reservoir controlstructural transfer zoneHaian Sag
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维普
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