渤海湾盆地冀中坳陷典型斜坡带成因机制及油气成藏特征

董大伟; 赵利; 李婷婷; 施瑞; 李彤; 孙艺飞; 孙昊

doi:10.11781/sysydz201904498

渤海湾盆地冀中坳陷典型斜坡带成因机制及油气成藏特征

doi: 10.11781/sysydz201904498

董大伟¹,
赵利^2, ,,
李婷婷¹,
施瑞¹,
李彤¹,
孙艺飞¹,
孙昊¹

1. 中国石油大学胜利学院, 山东东营 257061;
2. 山东农业大学资源与环境学院, 山东泰安 271018

基金项目:

山东省高校科研项目（J18KA212）、东营市科技发展计划项目（2017zcyd69）、中国石油大学胜利学院春晖计划课题（KY2017001）和中国石油大学胜利学院大学生创新训练项目（2018062）资助。

详细信息

作者简介:
董大伟(1984-),男,博士,副教授,从事油区构造解析方面研究。E-mail:dongdw@slcupc.edu.cn。

通讯作者:
赵利(1988-),男,讲师,博士,从事油区构造解析与构造物理模拟方面研究。E-mail:orchidy@126.com。

中图分类号: TE121.2
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出版历程
- 收稿日期: 2019-02-12
- 修回日期: 2019-06-02
- 刊出日期: 2019-07-28

Evolution mechanism and hydrocarbon reservoir characteristics of typical slope zones in Jizhong Depression, Bohai Bay Basin

1. Shengli College, China University of Petroleum, Dongying, Shandong 257061, China;
2. College of Resources and Environment, Shandong Agriculture University, Tai'an, Shandong 271018, China

摘要

摘要: 在统计国内断陷盆地斜坡带的宽度和坡度基础上，以冀中坳陷文安、蠡县、束鹿西3大典型斜坡带为例，利用现有的地震、石油地质等资料，从构造几何学、运动学等方面进行综合研究，分析各类型斜坡带构造演化及其成藏特征。根据斜坡带的坡度和宽度，划分出宽缓型、平台型和窄陡型3类斜坡带，分别对应冀中坳陷的文安斜坡、蠡县斜坡和束鹿西斜坡。宽缓型斜坡对应的凹陷为单断式，边界断层拆离深度浅，以沉积为主控因素；宽缓型斜坡油气成藏以横向长距离运移、多层系含油为特征，圈闭类型多样。平台型斜坡对应的凹陷为双断式，边界断层拆离深度中等，为构造-沉积复合型成因机制；平台型斜坡含油气丰度取决于斜坡内生烃次洼，圈闭类型以鼻状构造和岩性尖灭为主。窄陡型斜坡对应的凹陷为单断式，边界断层拆离深度深，以构造为主控因素；窄陡型斜坡带油气成藏以垂向运移为主要特征，圈闭类型以构造型为主。
- 构造解析 /
- 成因机制 /
- 成藏模式 /
- 斜坡带分类 /
- 冀中坳陷 /
- 渤海湾盆地
Abstract: The width and gradient of slope zones in faulted basins in China were studied. The tectonic evolution mechanism and hydrocarbon reservoir characteristics of various types of slope zones were discussed from the aspects of structural geometry and kinematics based on the seismic and geological data collected mainly from the Wen'an, Lixian and Shulu West slopes in the Jizhong Depression. According to slope gradient and width, three types of slope zones were classified:wide-gentle type, platform type and narrow-steep type, corresponding to the Wen'an, Lixian and Shulu West slopes, respectively. The wide-gentle type slope was characterized by a single-break and shallow detachment, and was dominated by sedimentation. Oil and gas migrated horizontally for a long distance and was enriched in multiple layers with various trap types. The platform type slope was characterized by double-breaks and medium detachment, and was controlled by both structure and sedimentation. The hydrocarbon abundance in the platform type slope depended on the hydrocarbon-producing subsags in slopes, and the traps were mainly nose-like or lithologic pinch-out types. The narrow-steep slope was characterized by a single-break and deep detachment, and was dominated by structure. Oil and gas migrated vertically and was mainly enriched in structural traps.
- structural analysis /
- genetic mechanism /
- accumulation model /
- classification of slope zones /
- Jizhong Depression /
- Bohai Bay Basin

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