东营凹陷沙一段断层封闭性研究

ANALYSIS OF THE SEALING PROCESS OF FAULTS IN MEMBER 1 OF SHAHEJIE FORMATION IN THE DONGYING SAG

东营凹陷位于济阳坳陷的东南部,区内断层平面组合特征复杂,剖面组合类型多样,导致了该凹陷内断层体系的复杂性和构造类型的多样性。通过对东营凹陷沙一段断层封闭性研究的总结,概述了该区断层封闭性的主要原理和机理以及影响因素,从定量和定性的角度分析了评价断层封闭性的方法,讨论了泥岩涂抹、挤压和地球化学作用对断层封闭性的影响。

The Dongying sag is located in southeastern part of the Jiyang Depression. The study area diaplays a great complexity of fault system in plane and a high diversity of structure in section. Based on a study of sealing process of faults in Member 1 of the Shahejie Formation, the authors have summarized the mechanism and affecting factors of sealing process of faults, and analyzed the method of quantitatively and qualitatively evaluating the sealing process of faults. Finally, a discussion has been made on the effect of compression and geochemistry on the sealing process of faults.