北塘凹陷古近系沙河街组三段物源体系分析

黄传炎; 王华; 周立宏; 任培罡; 刘军; 白云风

北塘凹陷古近系沙河街组三段物源体系分析

黄传炎^{1, 2,},
王华^{1, 2},
周立宏³,
任培罡^{1, 2},
刘军^{1, 2},
白云风^{1, 2}

1.
中国地质大学资源学院, 构造与油气资源教育部重点实验室，湖北武汉 430074
2.
中国地质大学地质过程与矿产资源国家重点实验室，湖北武汉 430074
3.
中国石油大港油田公司勘探开发研究院，天津 300280

基金项目:

国家自然科学基金项目 40872077

中国地质大学(武汉) 地质过程与矿产资源国家重点实验室开放课题基金 GPMR200913

构造与油气资源教育部重点实验室开放基金 TPR-2009-19

详细信息

作者简介:
黄传炎(1976-), 男, 博士, 主要从事层序地层学和沉积学研究.E-mail: cyhuang76@163.com

中图分类号: P588.21;P539.4
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出版历程
- 收稿日期: 2008-12-15
- 刊出日期: 2009-11-25

Provenance System Characters of the Third Member of Shahejie Formation in the Paleogene in Beitang Sag

HUANG Chuan-yan^{1, 2
,},
WANG Hua^{1, 2},
ZHOU Li-hong³,
REN Pei-gang^{1, 2},
LIU Jun^{1, 2},
BAI Yun-feng^{1, 2}

1.
Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education, Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China
2.
State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Wuhan 430074, China
3.
Research Institute of Exploration and Development, PetroChina Dagang Oilfield Company, Tianjin 300280, China

摘要

摘要: 物源分析是盆地分析的重要内容之一.北塘凹陷古近系沙河街组三段(Es₃) 湖泊范围广、沉积厚度大, 而勘探程度低, 是大港油田未来勘探的重要突破区, 精细刻画北塘凹陷沙三段物源体系对沉积体系重建、有利区带预测具有重要意义.采用构造格架及古地貌宏观区分物源区与沉积区, 根据碎屑矿物组合特征划分物源区块, 依据地震反射特征勾绘物源在盆内进积方向, 利用砂体等厚图和砂地比等值线图精细描绘物源分支, 从不同角度、不同层次对北塘凹陷沙三段古物源体系进行精细研究.结果表明, 北塘凹陷物源来自北部燕山褶皱带和西部沧县隆起, 具体分为西部的沧县物源、西北角的汉沽物源、北部的大神堂物源和东北角的涧南物源.在物源体系和构造组合特征的控制下, 沙三段主要发育扇三角洲沉积体系.
- 物源分析 /
- 沉积体系 /
- 沉积作用 /
- 北塘凹陷 /
- 沙三段
Abstract: Provenance analysis is an important aspect of basin analysis. Beitang sag is an important breakthrough zone for future exploration in Dagang oilfield with its wide range of lake, deep sediment thickness, and low level of exploration of the third member of Shahejie Formation (Es₃). Detailed depiction of the provenance system using of Es₃ is of practical significance for reconstructing depositional system and forecasting favorable areas. This paper analyzes in detail the provenance system of Es₃ in Beitang sag from various angles and levels: the source area and the deposition area is macroscopically distinguished according to tectonic framework and palaeogeomorphology; the source block is determined according to the characteristics of detrital mineral assemblage; the direction of transporting clastic fragmen in the basin is described according to seismic reflection characteristics; and the source branches are finely pictured according to sandstone thickness distribution map and percent distribution map The research results show that provenances originated from Yanshan fold belt and Cangxian uplift. They are divided into western Cangxian source, north-west Hangu source, north Dashentang source and north-east Jiannan source. In the tectonic framework and the provenance system, there mainly developed fan-delta depositional system of Es₃ in Beitang sag.
- provenance analysis /
- sedimentation system /
- sedimentology /
- Beitang sag /
- the third member of Shahejie Formation

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图 1 北塘凹陷区域地质和构造格架(据大港资料修改, 2004)

Fig. 1. Regional geological map and structure framework of Beitang sag

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图 2 北塘凹陷沙三段发育初期古地貌图与物源体系匹配

Fig. 2. The palaeogeomorphology and provenance system of Es₃ in Beitang sag

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图 3 北塘凹陷沙三段轻重矿物分析

Fig. 3. Light and heavy mineral combination characteristic analysis of Es₃ in Beitang sag

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图 4 地震反射特征分析

Fig. 4. Provenance analysis of seismic character

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图 5 北塘凹陷沙三一亚段砂岩百分率平面分布

Fig. 5. Sandstone percent map of Es₃¹ in Beitang sag

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图 6 北塘凹陷沙三一亚段沉积体系空间展布

SP.自然电位, mV; Rt.视电阻率, Ω·m

Fig. 6. Sedimentary system distribution map of Es₃¹ in Beitang sag

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图 7 北塘凹陷沙三段古地貌、物源及沉积相综合分析

Fig. 7. The palaeogeomorphology, provenance analysis and sedimentary system distribution map of Es₃ in Beitang sag

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