玛湖西斜坡百口泉组扇三角洲地震沉积学研究

doi:10.11885/j.issn.1674-5086.2019.01.29.01

西南石油大学学报(自然科学版) ›› 2020, Vol. 42 ›› Issue (2): 15-26.DOI: 10.11885/j.issn.1674-5086.2019.01.29.01

玛湖西斜坡百口泉组扇三角洲地震沉积学研究

李全^1,2, 李培俊³, 倪振³, 刘军³, 刘荷冲³

1. 中国海洋石油国际有限公司, 北京朝阳 100028;
2. 河南理工大学资源与环境学院, 河南焦作 454003;
3. 中国石油新疆油田公司风城油田作业区, 新疆克拉玛依 834000

收稿日期:2019-01-29 出版日期:2020-04-10 发布日期:2020-04-10
通讯作者: 李全,E-mail:quincy225@126.com
作者简介:李全,1982年生,男,汉族,吉林吉林人,高级工程师,博士,主要从事地震沉积学、层序地层学和深水沉积学方面的研究工作。E-mail:quincy225@126.com;李培俊,1963年生,男,汉族,新疆呼图壁人,高级工程师,硕士,主要从事石油地质、滚动勘探及油气田开发方面的研究工作。E-mail:lipj1@petrochina.com.cn;倪振,1987年生,男,汉族,安徽阜阳人,工程师,主要从事油气藏勘探评价方面的研究工作。E-mail:fcnz@petrochina.com.cn;刘军,1988年生,男,汉族,湖南长沙人,工程师,主要从事滚动勘探、油藏评价等方面的研究工作。E-mail:fclj3@petrochina.com.cn;刘荷冲,1986年生,男,汉族,河南南阳人,工程师,硕士,主要从事滚动勘探、油藏评价方面的研究工作。E-mail:fcliuhc@petrochina.com.cn
基金资助:
河南省博士后基金（1902038）；国家重点实验室开放课题（PRP/open-1504）

Seismic Sedimentary Study on the Fan-delta of the Baikouquan Formation on the Western Slope of the Mahu Sag

LI Quan^1,2, LI Peijun³, NI Zhen³, LIU Jun³, LIU Hechong³

1. CNOOC International Limited, Chaoyang, Beijing 100028, China;
2. Institute of Resources and Environment, Henan Polytechnic University, Jiaozuo, Henan 454003, China;
3. Fengcheng Oilfield Operating Area, Xinjiang Oilfield Company, CNPC, Karamay, Xinjiang 834000, China

Received:2019-01-29 Online:2020-04-10 Published:2020-04-10

摘要/Abstract

摘要： 针对扇三角洲前缘砂砾岩体层间物性变化大，优质储层难以预测的关键问题，在地震沉积学理论指导下，利用地震岩性学、地震地貌学及地层切片技术，结合测井和地震等资料对准噶尔盆地玛湖凹陷西斜坡风南地区百口泉组扇三角洲沉积相展布特征和充填过程进行了识别与描述。建立了玛湖凹陷西斜坡三叠系百口泉组高精度层序地层格架，划分出6个四级层序。识别出研究区内百口泉组扇三角洲平原分流河道、河道间，扇三角洲前缘水下分流水道、河口坝、席状砂等沉积微相及相应的测井相特征，通过岩性标定指出储层砂体与地震振幅之间的对应关系。利用四级层序格架内的地层切片技术，明确了百口泉组扇三角洲沉积体系的演化充填过程，指出了研究区内扇三角洲前缘优质储层的分布范围以及下步勘探方向。

关键词: 高精度层序格架, 地震沉积学, 地层切片, 充填演化, 地震地貌

Abstract: Fan-delta front glutenite exhibits wide variation in physical properties, making it difficult to predict high-quality reservoirs. Aiming to address this key issue, we identified and described the sedimentary facies distribution characteristics and filling process of the fan-delta in Baikouquan Formation in the Fengnan region on the western slope of the Mahu Sag (Junggar Basin). The study was guided by seismic sedimentology theory, and was done by means of seismic lithology, seismic geomorphology, and stratigraphic slicing techniques with logging and seismic data. In this study, we first established a high-precision sequence stratigraphic framework of the Triassic Baikouquan Formation on the western slope of the Mahu Sag, and delineated six fourth-order sequences. Then, we identified the sedimentary microfacies of the diversion channels, river channels, fan-delta front subaqueous diversion channels, estuary dams, and sheeted sands, as well as the corresponding logging characteristics of the Baikouquan Formation in the study area. We also indicated the correspondence between reservoir sand bodies and seismic amplitude by lithology calibration. Finally, with the help of slicing techniques in a fourth-order sequence grid, we clarified the filling-evolution process of the fan-delta sedimentary system in the Baikouquan Formation and pointed out the distribution range of high-quality reservoirs in the fan-delta front and the consequent prospecting direction.

Key words: high-precision sequence grid, seismic sedimentology, stratigraphic slicing, filling evolution, seismic geomorphology

中图分类号:

TE122

李全, 李培俊, 倪振, 刘军, 刘荷冲. 玛湖西斜坡百口泉组扇三角洲地震沉积学研究[J]. 西南石油大学学报(自然科学版), 2020, 42(2): 15-26.

LI Quan, LI Peijun, NI Zhen, LIU Jun, LIU Hechong. Seismic Sedimentary Study on the Fan-delta of the Baikouquan Formation on the Western Slope of the Mahu Sag[J]. 西南石油大学学报(自然科学版), 2020, 42(2): 15-26.

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玛湖西斜坡百口泉组扇三角洲地震沉积学研究

Seismic Sedimentary Study on the Fan-delta of the Baikouquan Formation on the Western Slope of the Mahu Sag

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