摘要
沉积物源分析对沉积相图编制以及开发方案设计意义重大.本文以西湖凹陷区域宏观、微观地质资料研究为基础,利用成像测井资料进行岩性识别、沉积构造拾取、沉积微相研究以及古水流方向分析,进而对凹陷内两个区带、两个层系的物源进行分析,结果认为中央带渐新统花港组物源以东北部虎皮礁隆起的变质母岩为主,物源区长距离轴向搬运沉积,物源区较为稳定.平湖斜坡带平北区始新统平湖组物源以西部海礁隆起的岩浆母岩为主,并以短源运输沉积为主,平面上相带变化较快.研究成果对于西湖凹陷平湖组沉积相认识、砂体展布等研究具有指导意义.
This article is based on the study of macro and micro geological data in the Xihu sag.It utilizes image logging data for lithology,lithofacies,sedimentary facies,and microfacies identification,as well as the analysis of paleocurrent direction.Subsequently,it analyzes the provenance of two zones and two series of strata in Xihu sag,concluding that the provenance area of the Oligocene Huagang Formation in the middle zone is dominated by metamorphic parent rocks from Hupijiao uplift in the northeast,with long-range axial transported deposition,and it is relatively stable;the provenance area of Eocene Pinhu Formation in Pinghu slope zone is dominated by magmatic parent rocks from Haijiao uplift in the west,with short-rang transported deposition,and the facies zone changes quickly on the plane.
作者
何玉春
何志斌
李帅
张国栋
鲁法伟
赖锦
蔡军
HE YuChun;HE ZhiBin;LI Shuai;ZHANG GuoDong;LU FaWei;LAI Jin;CAI Jun(Shanghai Branch of CNOOC Ltd.,Shanghai 200335,China;College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China)
出处
《地球物理学进展》
CSCD
北大核心
2024年第2期839-850,共12页
Progress in Geophysics
基金
中海石油(中国)有限公司重大专项资助。
关键词
成像测井
古水流
物源
花港组
平湖组
Image logs
Paleocurrent direction
Provenance
Huagang Formation
Pinghu Formation
