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东营凹陷边界断层活动性与沉积演化耦合关系的量化表征
张伟忠1,2,查明1,韩宏伟2,于景强2,崔世凌2,曲志鹏2
(1.中国石油大学地球科学与技术学院,山东青岛 266580;2.中国石化胜利油田分公司物探研究院,山东东营 257022)
摘要:
基于边界断层组合样式及演化特征的分析,利用新方法量化表征边界断层活动性特征,并从微观-宏观角度分析边界断层活动性对沉积的控制作用,最终建立基于断层活动性的沉积模式量板。结果表明:东营凹陷北带沙四期边界断层活动性自西向东具有弱—强弱交替—强的变化特征;微观上,边界断层活动性控制形成了稳定-富物源型、动荡-富物源型、稳定-贫物源型和动荡-贫物源型4种沉积环境;宏观上,边界断层活动性与沉积厚度呈正相关关系,与推进距离呈负相关关系;微观与宏观上相结合,可以建立基于断层活动性的沉积模式识别量板,明确边界断层活动性与陡坡带沉积演化的耦合关系。
关键词:  断层发育  沉积演化  耦合关系  东营凹陷
DOI:10.3969/j.issn.1673-5005.2017.04.003
分类号::TE 121.2
文献标识码:A
基金项目:中石化重点科技攻关项目(P15084);中石化胜利油田分公司科研项目(YKK1605)
Quantitative research of coupling relationship between boundary fault activity and sedimentary evolution in Dongying Depression
ZHANG Weizhong1,2, ZHA Ming1, HAN Hongwei2, YU Jingqiang2, CUI Shiling2, QU Zhipeng2
(1.School of Geosciences in China University of Petroleum, Qingdao 266580, China;2.Geophysical Research Institute in Shengli Oilfield, Dongying 257022, China)
Abstract:
Based on the analysis of the combination patterns and evolution characteristics, the boundary fault activity in Dongying Depression was studied quantitatively using a new method. The relationship between the boundary fault activity and the depositing process was analyzed at the micro to the macro level, and the depositional models template based on fault activity was built. Results show that the activity of boundary fault in Dongying Depression has "weak-alternating strength-strong" characteristics from west to east. At the microscopic level, boundary fault activity controls the four types of sedimentary environment:"stable-rich source", "unstable-rich source", "stable-poor source", and "unstable-poor source". At the macro level, the boundary fault activity has a positive correlation with the sedimentary thickness and negative correlation with forward distance. Combining both microcosm and macrocosm, the depositional models template was built based on boundary fault activity, and the coupling relationship between boundary fault activity and steep slope sedimentary evolution has been defined quantitatively.
Key words:  fault activity  sedimentary evolution  coupling relationship  Dongying Depression
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