岩性油气藏 ›› 2022, Vol. 34 ›› Issue (1): 1423.doi: 10.12108/yxyqc.20220102
黄雅睿1, 杨剑萍2, 卢惠东3, 李宇志3, 黄志佳4, 党鹏生4, 房萍4, 牟瑛顺4
HUANG Yarui1, YANG Jianping2, LU Huidong3, LI Yuzhi3, HUANG Zhijia4, DANG Pengsheng4, FANG Ping4, MU Yingshun4
摘要: 为了研究东营凹陷营北地区沙三中亚段(Es32)重力流沉积特征及演化,利用岩心、测井、录井和化验资料分析了其沉积特征,并细化了砂组,绘制了沉积微相图。结果表明:该区Es32重力流沉积可划分为水道控制型沉积和非水道控制型沉积2类。水道控制型沉积包括重力流水道和前端复合体2类沉积亚相,重力流水道亚相包括重力流水道微相和堤岸微相;前端复合体亚相包括沟道化朵叶体微相、碎屑舌状体微相、浊积朵叶体微相和浊积席状体微相。非水道控制型沉积包括滑动亚相和滑塌亚相。沉积演化模式为:Z6—Z4砂组沉积期水体较深,发育半深湖的重力流沉积;Z3—Z1砂组沉积期随着湖平面下降,研究区东部发育滨浅湖三角洲河口坝砂体,中部和西部以重力流沉积为主。这种重力流沉积演化模式,可为该区储层预测提供可借鉴的地质模型。
中图分类号:
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