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本文概略地论述了盆地内复合构造体系特征。第一部分着重地探讨了复合构造形成机理并指出,两类体系复合对气藏的富集来说,压扭复合型构造优于挤压复合型;多体系复合(三类以上)形成的适中构造,裂缝最发育,气藏富集条件最佳,并且复合型构造高点及轴线呈弧形转折的凸侧张应力活跃部位,控制了高严气井的分布。第二部分论述了古构造发展与油气富集关系,提出以凹陷、斜坡为主的背景上形成的复合型圈闭,最有利油气的富集;长期继承性隆起背景,虽有利油气的富集,但容易产生油气的纵向散失,勘探重点应以寻找褶皱相对适中和盖层不至被破坏的圈闭,才有希望钻获油气。最后文中强调了加强以构造为主的进行综合研究的重要性。
This article briefly discusses the characteristics of the composite structural system in the basin. The first part focuses on the formation mechanism of composite structure and points out that for the enrichment of gas reservoirs by two types of systems, the compression-compression composite structure is superior to the compression composite type; the moderate structure formed by multi-system composite (more than three types) , With the most developed fractures and the best conditions for enrichment of gas reservoirs, and the composite structural high point and the convex-side tensile stress active part with arcuate turning axis control the distribution of high-severity gas wells. The second part discusses the relationship between paleotectonic development and oil and gas accumulation. It is proposed that the composite trap formed on the background of depression and slope is the most favorable oil and gas enrichment. The long-term inherited uplift background, though conducive to oil and gas enrichment , But prone to the longitudinal loss of oil and gas, exploration should focus on finding the folds are relatively moderate and the cover is not damaged trap, only hope to get oil and gas. Finally, the article emphasizes the importance of strengthening the comprehensive study based on structure.