柴达木盆地北缘马北地区古今构造与油气藏的耦合

利用最新三维地震解释成果，结合钻井和区域地质资料，运用断裂生长指数、平衡地质剖面、趋势厚度恢复等多种方法对马北地区断裂组合、断裂发育期次、断裂演化、构造高点发育及迁移规律进行了精细解剖。依据断层组合关系、安德森断层模式及Harding1974年关于走滑断裂系应力、应变的相关论述，对该地区新生代以来各地质历史时期的应力状态进行了探讨,并以油气动态成藏的方式系统地研究了断裂-构造高点演化与油气藏之间的耦合关系，认为马北地区多期断裂是以马仙断裂为主导的走滑断裂体系，其断裂演化与马仙断裂活动息息相关，且与古今构造之间具有明显的耦合关系，两者共同控制了新生代油气藏的形成、改造及分布。

Coupling Between Inchoate-nowadays Geological Structures and Hydrocarbon Reservoirs in Mabei Area,Northern Margin of Qaidam Basin

Based on the new interpretation on seismic data, integrated with drilling and regional geology, the paper dissected the fault assemblage, fault forming phases, fault evolution and the rule of structural high development by means of fault growth index, balanced section, and trend thickness method. According to fault assemblage, Anderson fault mode and Harding^,s statements on stress and strain of strike-slip fault, stress condition since Cenozoic in Mabei area was discussed. Meanwhile, by adopting the dynamic approach, the coupling between inchoate-nowadays geological structures and hydrocarbon reservoirs is studied. Multi-stage faults in Mabei area is the strike-slip fault system dominated by Maxian fault. The fault evolution in the study area is closely linked with Maxian fault. There was significant coupling relationship between the fracture and inchoate-nowadays geological structures, and it is the fault and the inchoate-nowadays geological structures that jointly controlled the formation, reconstruction and distribution of Cenozoic hydrocarbon reservoirs.