油页岩
长英质
床上用品
致密油
地质学
页岩油
矿物学
断裂(地质)
多孔性
岩土工程
岩石学
古生物学
园艺
生物
镁铁质
作者
Jiang Wei,Ao Zhang,Jiangtao Li,Demiao Shang,Xiaofeng Zhou
出处
期刊:Energy
[Elsevier]
日期:2023-09-01
卷期号:278: 127829-127829
被引量:4
标识
DOI:10.1016/j.energy.2023.127829
摘要
Accurately characterizing the cross-scale structure of pores and fractures in shale reservoirs is the theoretical basis for efficient exploration and development of shale oil and gas. In this paper, (a) Based on the research background of different shale maturity and sedimentary characteristics, a three-dimensional model of cross-scale pore-fracture structure is established; (b) Based on a large number of CT characterization data of core pore-fracture structure, the characteristics of pore-fracture development under different geometric dimensions (25 mm and 2 mm) are statistically analyzed; (c) Pore and fracture structures of mixed shale, felsic shale and laminated felsic shale is comparatively studied, and the pore structure and bedding fracture characteristics of shale oil reservoir is revealed. Results show that: (a) for the bedding fracture porosity, felsic shale in Group I is 0.36 %–0.89%; mixed shale in Group I is 0.34 %–0.47%; mixed shale in Group III is 0.12 %–0.86%; mixed shale gravelly dolomite in Group III is 0.13 %–0.15%. (b) Compared with block 1, the laminated felsic shale bedding in block 2 is more developed. (c) CT imaging is based on density difference. Different components of shale samples are distinguished by gray scale.
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