摘要
辽河拗陷滩海东部地区古近系东营组东三段是该区域油气勘探的重点目的层系。综合岩心、测井等资料,利用碎屑组分、重矿物、沉积要素以及岩相与测井结合分析,对研究区东营组东三段物源和沉积相进行了分析。分析结果认为,研究区东三段存在三个物源方向,分别为北部自北向南方向、东部自东向西方向,以及西北部月东潜山方向;沉积相类型主要为辫状河三角洲前缘亚相和滨浅湖亚相,受构造背景与物源的控制,东三段三个亚段沉积相分布比较相似,北部为辫状河三角洲前缘沉积,东部为辫状河三角洲前缘与滨浅湖滩坝沉积,西北部为滨浅湖滩坝沉积。研究结果为滩海东部东三段后期勘探和有利储层预测提供了沉积地质基础。
The Member 3 of Paleogene Dongying Formation(E2d3)in the eastern part of the Liaohe Depression tidal area is a key target layer for oil and gas exploration.Based on the data of core and logging,the provenance and sedimentary facies of E2d3 in the study area were analyzed by combining clastic components,heavy minerals,sedimentary elements,and core facies with logging.The analysis results show that there are three provenance systems of the E2d3 in the tidal area,namely northern provenance,eastern provenance,and Yuedong buried hill in the northwest;the sedimentary facies in the study area are mainly composed of the braided river delta frontal subfacies and shore-shallow lacustrine subfacies,which are controlled by the tectonic background and provenance,and the sedimentary distribution of the three subsections in the E2d3 of the study area is relatively similar,the braided river delta front is mainly developed in the northern part of the study area,while the braided river delta front and shore-shallow lacustrine beach-bar are developed in the eastern area,and shore-shallow lacustrine beach-bar is developed in the northwest area.Our study provides a sedimentary geological basis for the further exploration and favorable reservoir prediction of the E2d3 in the east of the Liaohe depression tidal area.
作者
夏长发
林春明
张霞
黄舒雅
李绪龙
赵雪培
李鑫
宋福来
邹丙方
李铁军
XIA Changfa;LIN Chunming;ZHANG Xia;HUANG Shuya;LI Xulong;ZHAO Xuepei;LI Xin;SONG Fulai;ZOU Bingfang;LI Tiejun(School of Earth Sciences and Engineering,Nanjing University,Nanjing 210023,China;Research Institute of Petroleum Exploration and Development,PetroChina Liaohe Oilfield Company,Panjin 124010,China)
出处
《高校地质学报》
CAS
CSCD
北大核心
2023年第5期766-775,共10页
Geological Journal of China Universities
基金
中国石油天然气股份有限公司辽河油田分公司科研项目(LHYTKTKFYJY2020JS54437)资助。
关键词
辽河拗陷
滩海东部
东营组
物源
沉积相
Liaohe Depression
Eastern tidal area
Dongying Formation
Provenance
Sedimentary facies
