| Evolution of pore structure and adsorption-desorption in oil shale formation rocks after compression | |
Huang XF(黄先富) ; Zhao YP(赵亚溥)
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| Source Publication | ENERGY
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| 2023-09-01 | |
| Volume | 278Pages:127913 |
| ISSN | 0360-5442 |
| Abstract | As the extensive application of reservoir stimulation technologies such as hydraulic fracturing (including CO2 fracturing) and in-situ conversion, identifying the developing rules of the pore structure in shale formations rocks after compression becomes all the more important. Here we carry out experimental studies to reveal the evolution mechanism of pore structure of oil shale formation rocks after compression primarily via adsorptiondesorption isotherms. The results show that the BET specific surface area of the oil shale rocks first increases and then decreases after the confined compression, while the second dominant peak of pore size distribution shows the opposite behaviors. The pore volume experiences the stage of decrease, increase and continuous decrease with the increasing applied stress, and at last decreases by -30% under 700 MPa compression. The increase of fractal dimension of shale formation rocks after compression indicates that the pore structure gets rougher and more heterogeneous. It reveals that the pore structure and pore-system of shale rock experience a very complexed evolution during the compression, including compressing, cementing, splitting and vanishing. This work provides some guidelines for the rational design of stimulation technologies to improve shale oil and gas recovery, and the carbon sequestration in deep earth formations. |
| Keyword | Shale oil and shale gas Adsorption -desorption ishotherms BET specific surface area Total pore volume Fractal dimension Carbon sequestration |
| DOI | 10.1016/j.energy.2023.127913 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:001023011700001 |
| WOS Research Area | Thermodynamics ; Energy & Fuels |
| WOS Subject | Thermodynamics ; Energy & Fuels |
| Funding Organization | PetroChina Innovation Foundation [2019D-5007-0102] ; National Natural Science Foundation of China (NSFC) [12032019, 12241205, 11702299] ; National Key R amp ; D Program of China [2022YFA1200061] |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Zhao, YP (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92572 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.{Huang, Xianfu, Zhao, Ya-Pu} Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.{Huang, Xianfu, Zhao, Ya-Pu} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Huang XF,Zhao YP. Evolution of pore structure and adsorption-desorption in oil shale formation rocks after compression[J]. ENERGY,2023,278:127913.Rp_Au:Zhao, YP (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
| APA | 黄先富,&赵亚溥.(2023).Evolution of pore structure and adsorption-desorption in oil shale formation rocks after compression.ENERGY,278,127913. |
| MLA | 黄先富,et al."Evolution of pore structure and adsorption-desorption in oil shale formation rocks after compression".ENERGY 278(2023):127913. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2023Fa093.pdf（10759KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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