高邮凹陷南断阶戴南组沉积演化.doc

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高邮凹陷南断阶戴南组沉积演化#
李宗峰1,董桂玉1,柴新辉2,仇永峰3,毕天卓3**
(1. 河北联合大学矿业工程学院,唐山 063009;
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2. 中国石油西部钻探测井公司研究所,克拉玛依市 834000;
3. 中国石油化工股份有限公司江苏油田分公司地质科学研究院,扬州市 225009)
摘要:根据岩心、测井、录井、地震和区域地质资料,结合高分辨率层序地层学理论,对高
邮凹陷南断阶戴南组地层进行了系统的层序划分与对比,划分为 2 个长期基准面旋回和 8
个中期基准面旋回;根据“元素石英判源区,镜下画物源”的思想,对南断阶戴南组物源体
系进行了系统分析,认为南断阶的沉积物主要受通扬隆起方向和吴堡低凸起方向源区的影
响,但不同中期基准面旋回沉积过程中,远近有所变化;综合各类相标志,系统剖析了南断
阶戴南组的沉积特征和沉积类型,对研究区的沉积相、亚(微)相进行系统划分和重新厘定,
主要别出扇三角洲和近岸水下冲积扇两种沉积相类型,总结了沉积演化规律,并结合现代沉
积学原理建立了南断阶戴南组的沉积相模式,为研究区进一步的勘探开发提供了地质依据。
关键词:高邮凹陷;南断阶; 戴南组;沉积演化
中图分类号:TE 121
Sedimentary Evolution of the Dainan Formation of South
Fault-terrace Belts in Gaoyou Sag
Li Zongfeng1, Dong Guiyu1, Chai Xinhui2, Qiu Yongfeng3, Bi Tianzhuo3
(1. College of Mining Engineering, Hebei United University,Tangshan 063009;
2. Western Institute of China Petroleum Drilling and pany, Karamay 834000;
3. Geological Scientific Research Institute of Jiangsu pany,SNOPEC,Yangzhou
225009)
Abstract: This paper based on the core, logging data, seismic and relevant regional geological data,
combined with high-resolution sequence stratigraphy knowledge of Gaoyou sag south fault-terrace
belts Dainan deposition system for a systematic sequence stratigraphy and stratigraphic
correlation,the study area is divided into two long cycles and eight medium the
idea of looking for the source area after snadstone,and Determining source under
Microscope,systematic analysis of Dainan Formation south fault-terrace belts shows that the
sediments of the Dainan Formation south fault-terrace belts affected mainly by Tong Yang uplift
and Wubao low bulge,but different Sedimentary cycles source distance varies. The Dainan
Formation south fault-terrace belts mainly developed nearshore alluvial fan and fan delta. On this
basis, by analyzing the south fault terrace Dainan Formation Sedimentary characteristics and type
of sedimentary facies in the study area, systematically divided sub (micro) phase and summed