济阳坳陷惠民凹陷沙三段地震事件沉积特征及地质意义

doi:10.12108/yxyqc.20200202

岩性油气藏 ›› 2020, Vol. 32 ›› Issue (2): 14–23.doi: 10.12108/yxyqc.20200202

济阳坳陷惠民凹陷沙三段地震事件沉积特征及地质意义

刘建宁^1,2, 何幼斌^1,2, 王宁^1,2, 顾志翔^1,2, 郝烃³, 刘亚伟⁴

1. 长江大学地球科学学院, 武汉 430100;
2. 长江大学油气资源与勘探技术教育部重点实验室, 武汉 430100;
3. 中联煤层气有限责任公司研究院, 北京 100000;
4. 渤海钻探工程有限公司井下作业分公司, 河北沧州 062550

收稿日期:2019-09-19 修回日期:2019-10-23 出版日期:2020-03-21 发布日期:2020-01-19
通讯作者: 何幼斌(1964-),男,博士,教授,博士生导师,主要从事沉积地质与油气地质方面的教学与研究工作。Email:heyb122@163.com。 E-mail:heyb122@163.com
作者简介:刘建宁(1987-),男,长江大学在读博士研究生,研究方向为沉积地质与沉积矿产。地址:(430100)湖北省武汉市蔡甸区大学路111号长江大学。Email:ljn1932@sina.com
基金资助:
十三五”国家科技重大专项“东非海岸重点盆地勘探潜力综合评价”（编号：2017ZX05032-002-003）资助

Sedimentary characteristics and geological significance of earthquake events of Sha 3 member in Huimin Sag,Jiyang Depression

LIU Jianning^1,2, HE Youbin^1,2, WANG Ning^1,2, GU Zhixiang^1,2, HAO Ting³, LIU Yawei⁴

1. School of Geosciences, Yangtze University, Wuhan 430100, China;
2. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan 430100, China;
3. Research Institute, China United Coalbed Methane Co., Ltd., Beijing 100000, China;
4. Underground Operation Branch, Bohai Drilling Engineering Co., Ltd., Cangzhou 062550, Hebei, China

Received:2019-09-19 Revised:2019-10-23 Online:2020-03-21 Published:2020-01-19

摘要/Abstract

摘要： 为研究济阳坳陷惠民凹陷沙三段古地震事件沉积特征及其控藏作用，开展了钻井岩心观察、震积岩单井垂向序列划分、沉积主控因素分析和古地震事件地质意义研究。结果表明：①惠民凹陷沙三段沉积地层中，震积岩构造十分发育，包括震裂、自碎角砾、阶梯状小断层、液化岩脉、液化卷曲、液化角砾和其他脆塑性变形构造。②地震强度、沉积物固结程度和地形坡度均是影响震积岩发育的主要因素，多口井的垂向沉积序列显示，研究区不同构造位置的震积岩发育特征存在差异，可分为4个区域，分别为近震源平缓区、主震区、近震源坡度区、远震源平缓区。③地震事件沉积研究为惠民凹陷断层活动速率、生长指数等参数的确定提供了依据，且地震事件是激发砂体二次运移的重要动力源；地震事件中的震动可造成未固结的沉积物发生颗粒重排，降低沙三段储层的非均质性。④断层附近丰富的脆性震积构造可能成为油气运移的辅助通道，地震形成的自碎角砾岩为良好的储集层，液化均一的压实层为优质盖层。该研究结果对惠民凹陷震积岩油气勘探具有重要的指导意义。

关键词: 古地震事件, 震积岩, 沙三段, 惠民凹陷, 济阳坳陷

Abstract: In order to study the sedimentary characteristics of paleoearthquake events in the third member of Shahejie Formation in Huimin Sag of Jiyang Depression and its reservoir controlling effect,core observation,vertical sequence division of single well of seismic sedimentary rocks,analysis of main controlling factors of sedimentation and geological significance of paleoearthquake events were carried out. The results show that:(1)The structure of seismites is very well developed in the third member of Shahejie Formation in Huimin Sag, including shatter crack, autoclastic breccia,stepped small fault,liquefied vein,liquefied curl,liquefied breccia and other brittle plastic deformation structures.(2)Seismic intensity,sediment consolidation degree and terrain slope are the main factors affecting the development of seismites. The vertical sedimentary sequence of several wells shows that the development characteristics of seismites in different structural positions in the study area are different, which can be divided into four areas,namely near source gentle area,main seismic area,near source slope area and far source gentle area.(3)The study of earthquake event deposition provides a basis for the determination of fault activity rate, growth index and other parameters in Huimin Sag,and the seismic event is an important power source for stimulating the secondary migration of sand body. The vibration in seismic event can cause the particle rearrangement of unconsolidated sediments,and reduce the heterogeneity of the reservoir in the third member of Shahejie Formation.(4)The abundant brittle seismites near faults may be the auxiliary channel of oil and gas migration,the autoclastic breccia formed by earthquakes is a good reservoir,and the compacted layer with uniform liquefaction is a high-quality caprock. The results of this study are of great significance to seismic exploration in Huimin Sag.

Key words: paleoearthquake events, seismites, Sha 3 member, Huimin Sag, Jiyang Depression

中图分类号:

P512.2

刘建宁, 何幼斌, 王宁, 顾志翔, 郝烃, 刘亚伟. 济阳坳陷惠民凹陷沙三段地震事件沉积特征及地质意义[J]. 岩性油气藏, 2020, 32(2): 14–23.

LIU Jianning, HE Youbin, WANG Ning, GU Zhixiang, HAO Ting, LIU Yawei. Sedimentary characteristics and geological significance of earthquake events of Sha 3 member in Huimin Sag,Jiyang Depression[J]. Lithologic Reservoirs, 2020, 32(2): 14–23.

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济阳坳陷惠民凹陷沙三段地震事件沉积特征及地质意义

Sedimentary characteristics and geological significance of earthquake events of Sha 3 member in Huimin Sag,Jiyang Depression

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