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[1]周超,曾倩,张宁宁,等.Tanganyika盆地南部断裂特征及其对沉积的控制作用[J].断块油气田,2020,27(03):284-289.[doi:10.6056/dkyqt202003003]
 ZHOU Chao,ZENG Qian,ZHANG Ningning,et al.Fracture characteristics and its control on sedimentation in south of Tanganyika basin[J].Fault-Block Oil and Gas Field,2020,27(03):284-289.[doi:10.6056/dkyqt202003003]
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Tanganyika盆地南部断裂特征及其对沉积的控制作用(PDF)
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《断块油气田》[ISSN:1005-8907/CN:41-1219/TE]

卷:
27
期数:
2020年03
页码:
284-289
栏目:
地质勘探
出版日期:
2020-05-25

文章信息/Info

Title:
Fracture characteristics and its control on sedimentation in south of Tanganyika basin
文章编号:
3
作者:
周超12曾倩3张宁宁3孟德伟3李浩武3
1.中国地质大学(北京)能源学院,北京 100083;2.中国石油国际勘探开发有限公司,北京 100034;3.中国石油勘探开发研究院,北京 100083
Author(s):
ZHOU Chao12 ZENG Qian3 ZHANG Ningning3 MENG Dewei3 LI Haowu3
1.School of Energy Resources, China University of Geosciences, Beijing 100083, China; 2.China National Oil and Gas Exploration and Development Company Ltd., Beijing 100034, China; 3.Research Institute of Petroleum Exploration and Development, Petrochina, Beijing 100083, China
关键词:
断裂系统调节带沉积体系Tanganyika盆地
Keywords:
fault system accommodation zone sedimentary system Tanganyika basin.
分类号:
TE121
DOI:
10.6056/dkyqt202003003
文献标志码:
A
摘要:
东非裂谷系盆地近年来相继取得油气发现,Tanganyika盆地与已发现含油气盆地的构造及沉积特征相似,具有较大的勘探潜力。文中利用地震资料开展构造解释,对盆地断裂系统的成因及特征、调节带的类型及对沉积的控制作用开展了研究。结果表明:研究区主要受新生代裂谷拉伸作用及元古代克拉通 ̄古缝合线影响,发育以NW—SE向为主的断裂系统;研究区断层类型以非旋转正断层和走滑断层为主,根据规模可划分为3级;受断层控制,研究区表现为“一缓一洼一剪切”的构造格局。根据断层倾向和叠覆关系,在研究区共识别出5类调节带类型,对沉积起到不同的控制作用。其中,同向接近型调节带控制了扇三角洲及滑塌沉积的发育位置,同向叠覆型调节带控制了轴向河流沉积的发育范围,对向叠覆型调节带控制了洼陷中心轴向河流三角洲及浊流沉积体系的发育范围。
Abstract:
In recent years, oil and gas discoveries had been achieved successively in East Africa Rift System. Tanganyika basin is similar in structure and sedimentary characteristics with these petroliferous basins, and has great exploration potential. Based on seismic data, the structural interpretation was carried out, and the origin and characteristics of faults system, accommodation zone types and its controls on the sedimentation were studied. The results show that the study area was affected by the Cenozoic rifting tension and Proterozoic Craton-ancient suture, and developed NW—SE-oriented fault system. The faults systems, mainly non-rotating normal faults and strike-slip faults, were classified into three levels by size. Controlled by faults, the tectonic framework of study area includes a gentle slope belt, a sag subsidence center and a shear zone. Based on faults tendency and overlapping relation, five types accommodation zones were summarized, which control sedimentation in different ways. Synthetic approaching accommodation zones control development of fan delta and collapse deposits, synthetic overlapping accommodation zones control development of fluvial deposits in the axial direction, and antithetic overlapping accommodation zones control fluvial delta and turbidity current sedimentary system in the axial direction in sag center.

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备注/Memo

备注/Memo:
收稿日期:2019-11-20;改回日期:2020-03-10。
第一作者:周超,男,1986年生,工程师,博士,研究方向为储量评价、新项目开发。E-mail:zhouchao@cnpcint.com。
基金项目:国家科技重大专项“全球油气资源评价与选区选带研究”(2016ZX05029)
更新日期/Last Update: 2020-05-20