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输导体系是油气从源岩到圈闭的桥梁,盆地广泛存在的断裂构成了油气输导的重要通道。本文基于大量油气勘探实践,系统总结了断层输导体系的特征、类型及控藏模式,研究认识对断块油气区勘探目标评价具有指导意义。笔者依据油气沿断层运移的方向,将断层输导方式归结为沿断层垂向和穿过断层运移;油气穿层、长距离的垂向运移和周期性是断层输导体系的典型特征;根据断层与其他输导体的组合方式差异,断裂输导系统可分为断裂型、断层-连通砂体型、断裂-不整合面型和断层-连通砂体-不整合复合型输导体系;最后总结提出了同层成藏、潜山成藏、跨断层成藏和沿断层成藏四类典型的成藏模式。
The transport system is a bridge of oil and gas from source rocks to traps. The widespread faults in the basin constitute an important channel for oil and gas transport. Based on a large number of oil and gas exploration practices, this paper systematically summarizes the characteristics and types of fault-conducting systems and the model of reservoir-holding, and the research knowledge is instructive for the evaluation of exploration targets in fault-block oil and gas areas. Based on the direction of migration of oil and gas along the fault, the author concludes that the fault propagation mode is vertical migration along the fault and across the fault. The vertical migration and periodicity of oil and gas strata, long distance are the typical characteristics of the fault-conducting system ; According to the difference of the combination of faults and other conductors, the fracture guidance system can be divided into fault-type, fault-connected sand body type, fault-unconformity face type and fault-connected sand body-unconformity compound transmission system; finally Summarize and put forward the four types of typical reservoir forming models in the same layer, buried hill formation, stratigraphic accumulation and fault accumulation.