【摘要】 在对三维地震、钻井及相关地质资料分析的基础上,运用平衡地质剖面、趋势厚度法地层恢复等技术,对柴达木盆地北缘马北地区新生代构造高点的迁移规律及主要控制因素进行了深入研究,并在此基础上从油气动态成藏的视角对该区油气成藏机理进行了探讨,认为油气早期主要富集在由北东向断裂控制的古构造高点,现今油气主要分布于喜马拉雅运动晚期构造调整之后形成的构造高点,提出古、今构造高点叠合部位是油气勘探的最有利地区,建议今后该地区的油气勘探应围绕现今构造高点寻找构造油气藏,围绕古构造高点周缘寻找岩性-地层油气藏。更多还原

【Abstract】 Based on the 3-D seismic interpretation,drilling data and related geological information analyses,by means of balanced geologic profile and trend thickness method for formation restoration,the migration of Cenozoic structural highs and main control factors in Mabei area in northern margin of Qaidam basin were studied,by which the hydrocarbon accumulation mechanism in this area in view of oil-gas dynamic accumulation is investigated.It is shown that in early stage hydrocarbon is mainly enriched in the paleo-structural highs controlled by NE trending faults,while present oil-gas distribution is located in the structural highs formed following tectonic regulations in late Himalayan movement.It is concluded that the superimposed positions of paleo and present structural highs are the most favorable areas for oil-gas exploration.The exploration targets in this area should be structural reservoirs surrounding the present structural highs and lithologic-stratigraphic reservoirs around the paleo structural highs.更多还原