The oil and gas reservoirs generally experienced complicated modification and destruction by structural impact in the multi-cycle basins, which is of crucial importance to hydrocarbon preservation and distribution. Together with the case study of the Ordovician carbonate hydrocarbon reservoirs in the Tarim Basin, fault modification in carbonate hydrocarbon accumulations is sub-divided into fault cutting, fault uplift, fault folding, fault reactivation and fault sealing type. Fault modification modes mainly include trap change, cap thinning, hydraulic action, pressure change and diagenetic change, etc., which results in the oil and gas leakage, washing, recharge and fluid property change. These lead to the complexity of oil and gas reservoir and distribution. Fault impacts on the hydrocarbon modification play significant roles in the carbonate hydrocarbon distribution and exploitation in the multi-cycle basins.
Xu Yifeng Wu Guanghui Chen Lixin Bai Wenlong She Zhicheng Zhao Longfei. The fault modifications on carbonate hydrocarbon accumulation: A case study in the Tarim Basin[J]. Chinese Journal of Geology, 2020, 55(2): 392-403.