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采用地层回剥技术重建了不同构造层断裂展布与演化历史,并基于先前模型理论,提出适用于普遍演化特征的断裂长度、断层位移与断面形状关系的椭圆模型,分析了它们在空间上延伸与变形规律以及不同性质断层的发育特征及其对油气成藏的控制能力。结果显示了断片在二维空间上的相继联结性造成断裂不平滑化、曲形化和断层与断距突变化,也显示了断裂三维空间延伸的不平衡性。研究成果很好地解释了东辛油田隆起带断裂分布与该构造带油气聚集分配的规律。
Based on the previous model theory, the elliptical models for fracture length, fault displacement and cross-sectional shape that are universally evolved are proposed by using the back-stripping technique of strata. The spatial distribution of these fractures is also analyzed And deformation laws as well as the developmental characteristics of faults with different properties and their control over hydrocarbon accumulation. The results show that the continuity of the fragments in two-dimensional space leads to the non-smooth fracture, the curved shape and the sudden change of fault and fault distance. It also shows the imbalance of the three-dimensional fracture extension. The research results well explain the fracture distribution of the uplift zone in Dongxin Oilfield and the rules of hydrocarbon accumulation and distribution in this structural zone.