临清坳陷油气资源评价问题及研究意义

摘要

临清坳陷白海西期以来各地质时期的盆地格局在垂向和横向上均存在着明显的差异,后期盆地对先期盆地进行了强烈的叠加构造.这一复杂的叠合关系使研究区内的烃源岩的埋藏史和生排烃史也变的非常复杂.通过分析有效烃源岩、排聚系数、含油气系统及油气资源评价的研究思路方面的地质问题,认为在对临清坳陷进行油气资评价时,具有二次生烃能力并且生成的油气能够聚集成藏的烃源岩才是有效烃源岩,排聚系数的取值对计算资源量具有较大的影响.%Since Hercynian Era there have been obvious differences in vertical and horizontal basin pattern of Linqing depression,a strong superposition structure of post basin being on the earlier basins. This complicated composite relationship leads to a very complex burial history and generation and expulsion hydrocarbon history of source rocks in the study area. By analyzing effective hydrocarbon source rocks, migration and accumulation coefficient, petroleum system and the research ideas of oil and gas resources assessment and so on, this paper holds that the effective source rocks are the source rock which is the secondary hydrocarbon generation and accumulation, and that row accumulation coefficient has a great impact on the amount of computing resources in evaluating oil and gas resources of Linqing depression.