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辽河盆地是一个以新生代为主要成盆期的裂谷盆地,断裂和断陷活动是新生代构造变形的主导方式。断裂幕式活动,引起沉积空间和湖盆范围周期性扩张与收缩,控制了生储盖及其组合特征。断裂的发育对油气富集有着十分重要的影响,它控制了油气运移和聚集。该文较全面和系统地总结了断裂对油气的影响,认为主干断裂控制油气富集,断裂发育演化对油气资源有重要的影响。次级断裂对油气的侧向封堵及油气的再分配有重要的作用,断层的开启性又导致不同区块油气贫富不一致。断裂控制了特殊储层裂缝发育,对圈闭形成起到了关键的作用。因此,正确认识断裂对勘探具有十分重要的意义。
The Liaohe Basin is a rift basin dominated by the Cenozoic age. The faults and faulting activities are the dominant mode of Cenozoic structural deformation. Fault episodic activities, causing the depositional space and the periodic expansion and contraction of the lake basin, controlling the reservoir cap and its combination features. The development of faults has a very important influence on oil and gas accumulation, which controls the migration and accumulation of oil and gas. The paper summarizes the impact of faults on oil and gas in a comprehensive and systematic way. It is believed that the main faults control the enrichment of oil and gas, and the evolution of faults has an important impact on oil and gas resources. Secondary faults have an important effect on the lateral sealing of oil and gas and the redistribution of oil and gas. The opening of faults also leads to the inconsistency between rich and poor oil and gas in different blocks. Faults control the development of fractures in special reservoirs and play a key role in the formation of traps. Therefore, a correct understanding of the fracture is of great significance to exploration.