关键词: 柴达木盆地, 昆北断阶带, 地震资料解释, 圈闭类型, 圈闭特征

Abstract: The north Kunlun faults zone lies in the southern edge of the western Qaidam Basin.It has a lower degree of exploration and complicated hydrocarbon accumulation.In order to make a deep probation of the major exploration targets and hydrocarbon accumulation law,the authors make a research on the types and controlling factors of traps in this area.The major types of trap are structural traps including the faulted nose,faulted anticline and faulted block.The horizontal distributions are mainly subject to the development of fractures and degrees of tectonic deformation.It has an obvious dependent relation with faults system,and most of them are fault dissections which have a less completeness.They are featured by the linear and zonal distribution.What′s more,most traps are formed in Miocene and Pliocene epoch and there is a big difference among tectonic positions in hydrocarbon bearing.Thus,the conclusions will be helpful to the next hydrocarbon exploration in this area.

Key words: Qaidam Basin, north Kunlun faults zone, seismic data interpretation, trap type, trap feature