地学前缘 ›› 2012, Vol. 19 ›› Issue (1): 172-181.

• 论文 • 上一篇    下一篇

渤南洼陷沙三下亚段泥页岩储集空间研究：以罗69井为例

 邓美寅, 梁超   

  1. 1. 胜利地质录井公司， 山东 东营 257064
    2. 中国地质大学（北京） 能源学院， 北京 100083
  • 收稿日期:2011-11-20 修回日期:2011-12-10 出版日期:2012-01-10 发布日期:2012-01-10
  • 作者简介:邓美寅（1964—），女，博士，石油地质专业，一直从事地质综合研究、录井技术研究及技术管理工作。E-mail: 386878988@qq.com
  • 基金资助:

    国家科技重大专项（2011zx05009002）

Liang Chao. Studies on reservoir space of mud stone and shale of the lower section of Es3 in Bonan Subsag: An example from Well Luo 69.

  1. 1. Shengli Geologging Company, Dongying 257064, China
    2. School of Energy Resources, China University of Geosciences (Beijing), Beijing 100083, China
  • Received:2011-11-20 Revised:2011-12-10 Online:2012-01-10 Published:2012-01-10

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摘要：

济阳坳陷渤南洼陷沙三下亚段泥页岩厚度大、分布广，主要发育了深灰色泥岩、灰质泥岩、油泥岩、泥质灰岩和黄褐色—灰褐色油页岩。泥页岩的有机碳含量高，最高可达9.0%;生烃潜量高，最高可达82.6 mg/g;演化程度高，最高可达3.0%;该区泥页岩既是良好的烃源岩，也是页岩油气赋存的有利场所。为研究该区沙三下亚段页岩油气储集空间，文中通过岩心观察、偏光显微镜、扫描电镜等手段，认为研究区泥页岩储集空间中裂缝包括构造裂缝、层间微裂缝、超压破裂缝；空隙主要为微孔隙，包括黄铁矿晶间孔、粘土矿物晶间孔、方解石晶间孔。总体上来讲，储集空间以构造张裂缝、层间微裂缝、粘土矿物晶间孔及方解石晶间孔为主导。通过对比不同岩相间储集空间的类型与特征，认为沙三下12下、13上砂组纹层状泥质灰岩为储集性能最好的岩相。

关键词: 渤南洼陷, 泥页岩, 微裂缝, 微孔隙, 页岩油气

Abstract:

Mud stone and shale from the Lower Section of Es3 in Bonan Subsag, Jiyang Depression is characterized by great thickness and wide distribution. It mainly develops dark gray mudstone, lime mudstone, oil mudstone, argillaceous limestone, and yellow brown and taupe oil shale. The mud stone and shale has high content of organic carbon (up to 9.0%) and great hydrocarbon generation potential (up to 82.6 mg/g) as well as high maturity (up to 3.0%), which made it as good source rocks and also a favorable accumulation area for shale oil and gas. To study the reservoir space of mud stone and shale of the lower section of Es3, methods such as core observation, polarizing microscope, scanning electron microscope and so on were applied. The cracks of shale reservoir space include structural cracks, microcracks between layers, overpressure breaking cracks. The pore space is mainly micropores, including pyrite intergranular pores, intergranular pores of clay minerals. Overall, reservoir space is dominated by tension fracture microcracks between layers, intergranular pores of clay minerals, intergranular pores of calcite. Through the comparison of reservoir space types and characteristics of different rocks, the lamellar argillaceous limestone in Lower No.12 and Upper No.13 layers of Es3 is the best reservoir lithofacies style.

Key words: Bonan Subsag, mud stone and shale, microcracks, micropores, shale oil and gas

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