石油地球物理勘探2019，Vol.54Issue(2)：433-446,460,前插7,16.DOI:10.13810/j.cnki.issn.1000-7210.2019.02.023
东辛地区断层调节带的地震识别及特征
Seismic identification of fault accommodation zones in Dongxin area
摘要
Abstract
Located in the eastern part of the central uplift belt,Dongxin area in Dongying Sag,10accommodation zones of subtle faults are identified and classified into 5 types.Structural characteristics of different types of fault accommodation zones and the relationship with the hydrocarbon distribution are detailedly analyzed, and seismic identification marks of different types are constructed.Collateral fault accommodation zones mainly developed in Xinzhen structure are paralleled major faults with step-fault patterns or multiple graben patterns on sections.Overlapping accommodation zones mainly developed in Dongying structure are obliqued with major faults in en echelon arrangement in the plane and their structural style is presented in horsetail patterns and flower structure on sections.Approaching accommodation zones formed by one major fault of Dongying structural belt adjoining other 3major faults of Xinzhen structural belt are fan-like in plane.On sections, their structural style is presented the patterns of compound flower structure.The accommodation zones controlled by single major fault are divided into the types of inward convergence to hinge zone and divergency in pitching end.The inward convergent accommodation zones developed in northwest part of Dongying structure are distributed in the manner of brush convergent to major faults with the patterns of pectination on sections.Whereas,fault accommodation zones of divergency in pitching end developed in the west of Xinzhen structure are distributed in the manner of phoenix tail in plane.On sections,the lower structural style is presented in the patterns of pectination and the upper structural style is presented in pattern of cabbage liking.Collateral accommodation zones and inward convergent accommodation zones can be easily identified with coherence attribute and seismic sections.Then overlapping accommodation zones and approaching accommodation zones can also be identified.The most difficult to be identified is the fault accommodation zones of divergency.The collateral accommodation zones and overlapping zones are the most prolific hydrocarbon areas in Dongxin Fault Zone because their development and activity had a very close relationship with oil source fault activity.The conclusions are instructive and meaningful to fault accommodation zone identification and favorable target optimization in the transtensional fault system.关键词
东辛地区/断层调节带/地震识别/东营凹陷/调节带特征/耦合关系Key words
Dongxin area/fault accommodation zone/ seismic identification/Dongying Sag/structural characteristics/ coupling relationship分类
天文与地球科学引用本文复制引用
路智勇,杨少春,白青林,张善文,杨侃,荆亚云..东辛地区断层调节带的地震识别及特征[J].石油地球物理勘探,2019,54(2):433-446,460,前插7,16.基金项目
本项研究受国家科技重大专项"低渗—致密油藏描述新方法与开发模式"(2017ZX05009-001)资助. （2017ZX05009-001）
