东营凹陷营11北地区沙三中亚段重力流触发机制  

Triggering mechanism of gravity flow sandbodies of middle Es_(3) member in the north of well Ying 11,Dongying Depression

作　　者：杨剑萍[1,2] 黄雅睿 卢惠东 李宇志 欧浩文 张文博 黄志佳 党鹏生[5] 高丽萍 鲁娜[5] YANG Jianping;HUANG Yarui;LU Huidong;LI Yuzhi;OU Haowen;ZHANG Wenbo;HUANG Zhijia;DANG Pengsheng;GAO Liping;LU Na(School of Geosciences in China University of Petroleum(East China),Qingdao 266580,China;Qingdao National Laboratory for Marine Science and Technology,Evolution and Detection Technology Laboratory of Marine Resources,Qingdao 266071,China;Petroleum Development Center,Shengli Oilfield Branch Company,SINOPEC,Dongying 257061,China;Dongxin Oil Production Plant,Shengli Oilfield Branch Company,SINOPEC,Dongying 257061,China;Oil Production Plant No.3,Huabei Oilfield Branch Company of CNPC,Hejian 062450,China)

机构地区：[1]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [2]青岛海洋科学与技术国家实验室,海洋矿产资源评价与探测技术功能实验室,山东青岛266071 [3]中国石化胜利油田分公司石油开发中心有限公司,山东东营257061 [4]中国石化胜利油田分公司东辛采油厂,山东东营257061 [5]中国石油天然气股份有限公司华北油田分公司采油三厂,河北河间062450

出　　处：《中国石油大学学报（自然科学版）》2021年第4期1-11,共11页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(42072134);山东省重大科技创新工程项目(2017CXGC1608)。

摘　　要：以东营凹陷营11北地区沙三中亚段重力流沉积砂体为研究对象,通过岩心、测井、录井、地震及地化分析资料,对研究区滑动、滑塌、砂质碎屑流和浊流4种沉积类型重力流的触发机制和沉积演化特征进行研究,建立2种地震岩序列,阐明震级与软沉积物变形构造的类型及垂向序列之间的对应关系。结果表明:构造运动为研究区重力流砂体主要的触发机制,沙三中亚段3砂组沉积时期构造运动最为强烈;沙三中亚段的6砂组至4砂组沉积时期,水体较深,湖平面缓慢下降,研究区整体上发育较深水的重力流沉积;3砂组沉积时期,构造抬升,湖平面下降剧烈;3砂组至1砂组沉积时期,研究区东部发育滨浅湖三角洲砂体,中部和西部发育重力流沉积;3砂组沉积时期为湖平面下降最剧烈的时期,这一结论与研究不同构造强度下地震岩中软沉积物变形构造所得出的结论相契合。The object of study is the gravity flow sandbodies of the middle Es 3 member in the north of well Ying 11 in Dongying Depression.Using core,logging,seismic,seismic and analytical laboratory data,the triggering mechanism and sedimentary evolution characteristics of slide,slump,debris flow and turbidity current in the study area were studied,two types of seismic rock sequences were established and the correlation between magnitude and vertical sequence was analyzed.The results illustrate that the tectonic movement is the main triggering mechanism of gravity flow sand body,and the tectonic movement was most intense during the 3rd sand group period.During the 6st-4st sand-group sedimentation period,the water depth was relatively deep and the lake level dropped slowly,which was mainly developed as the gravity flow deposition.Then,tectonic uplift caused the lake plane to fall sharply during the 3rd sand-group sedimentation period.Finally,during the 3rd-1st sand-group sedimentation period,shallow lake facies channel-mouth bar sand body developed in the east of the study area,and the gravity flow deposits developed in the middle and west.The 3rd sand-group sedimentation period is the most dramatic period of lake level decline,which is consistent with the conclusion obtained by studying the deformation structure of soft sediments in seismic rocks under different structural strengths.

关 键 词：重力流 触发机制 地震岩 沉积演化 沙三中亚段 东营凹陷 

分 类 号：TE121.3[石油与天然气工程—油气勘探]