鄂尔多斯镇泾地区延长组成藏体系与油气富集模式

肖承钰; 尹伟; 张颖; 徐士林; 杨渔; 刘振峰

doi:10.11781/sysydz201503347

鄂尔多斯镇泾地区延长组成藏体系与油气富集模式

doi: 10.11781/sysydz201503347

1.
长江大学地球科学学院, 武汉 430100
2. 中国石化石油勘探开发研究院, 北京 100083
3. 中国石化华东石油局, 南京 210000
4. 振华石油控股有限公司, 北京 100031

基金项目: 国家科技重大专项(2011ZX05002-006)资助.

详细信息

作者简介:
肖承钰(1992-),男,资源勘查工程专业.E-mail:499763257@qq.com.

中图分类号: TE122.3⁺3
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出版历程
- 收稿日期: 2014-11-09
- 修回日期: 2015-05-07
- 刊出日期: 2015-05-28

Petroleum accumulation systems and oil enrichment patterns of Yanchang Formation in Zhenjing area, southern Ordos Basin

1.
College of Geosciences, Yangtze University, Wuhan, Hubei 430100, China
2. Petroleum Exploration & Production Research Institute, SINOPEC, Beijing 100083, China
3. SINOPEC East China Petroleum Bureau, Nanjing, Jiangsu 210000, China
4. Zhenhua Petroleum Holdings Limited, Beijing 100031, China

摘要

摘要: 在典型油藏解剖基础上,根据油气成藏体系概念和划分原则,结合烃源岩、源储组合样式、油藏特征、成藏机制等,将镇泾地区延长组划分为近源—接触式成藏体系和近源—跨越式成藏体系2类。前者油藏类型以岩性油藏为主,源储紧邻,为直接接触,具有"近源成藏"特征,运移距离短,运移动力主要为源储压力差,输导体系为砂岩(微裂缝),隐性输导,油气富集主控因素为优质烃源岩、有利砂体和裂缝,油气富集模式可概括为"近源—接触式'源、相、缝'控";后者油藏类型以构造—岩性为主,源储为跨越式接触关系,具有"远源成藏"特征,运移距离较长,运移主要动力为源储压力差和浮力,输导体系以断裂—砂体为主,油气富集主控因素为通源断裂、有利砂体和裂缝,富集模式可概括为"近源—跨越式'断、相、缝'控"。
- 成藏体系 /
- 富集模式 /
- 延长组 /
- 镇泾地区 /
- 鄂尔多斯盆地
Abstract: Detailed analysis of the distribution of source rocks, the source-reservoir assemblages, the characteristics and the accumulation mechanisms of oil pools, etc. allow the Yanchang Formation in the Zhenjing area to be divided into near-source-contact type and near-source-leap type petroleum accumulation systems. The near-source-contact type petroleum accumulation system is characterized by lithologic traps, short migration distance, with the pressure difference between source and reservoir serving as major migration force and subtle transportation system in which hydrocarbon enrichment is mainly controlled by high-quality source rocks, favorable sand bodies as well as fractures. The oil enrichment pattern can be described as "source rock-sedimentary microfacies-fracture combined control". The near-source-leap type petroleum system is characterized by structural-lithologic traps, relatively longer migration distance, with the pressure difference between source and reservoir or buoyancy force serving as the major migration driving forces and the faults connecting source rocks serving as the main pathway, in which hydrocarbon enrichment is mainly controlled by the faults connecting source rocks, high quality sand bodies and fractures. The oil enrichment pattern can be summarized as "faults connecting source rock-sedimentary microfacies-fracture combined control".
- petroleum accumulation system /
- oil enrichment pattern /
- Yanchang Formation /
- Zhenjing area /
- Ordos Basin

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