Studies on Reservoir Space of Mud Stone and Shale of the Lower Section of Es₃ in Bonan Subsag: Taking the Well Luo 69 as an Example

详细信息   

• 责任者：Deng Meiyin (Shengli Geologging Company ; Dongying 257064 ; China) ; Liang Chao
• 刊名：Earth Science Frontiers
• 出版年：2012
• 卷期：19(1)
• 关键词：泥质岩类储集层 ; shale reservoirs ; 页岩气 ; shale gas ; 渤海湾盆地 ; Bohaiwan Basin
• 页码：p.173-181
• 图表：6 illus., 3 tables, 31 refs.
• 分类号：1003
• issnNo：ISSN1005-2321
• isbnNo：CN11-3370/P

摘要

 Mud stone and shale from the Lower Section of Es3in 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 82.6mg/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.12and Upper No.13layers of Es3is the best reservoir lithofacies style.