A new type of shale gas reservoirdcarbonate-rich shale: From laboratory mechanical characterization to field stimulation strategy
文献类型：期刊论文
| 作者 | Bi, Zhen-Hui1,2; Wang, Lei1,2; Yang, Chun-He1,2; Guo, Yin-Tong1,2; Guo, Wu-Hao1,2; Yang, Han-Zhi3 |
| 刊名 | PETROLEUM SCIENCE
 |
| 出版日期 | 2024-10-01 |
| 卷号 | 21期号:5页码:3047-3061 |
| 关键词 | Carbonate-rich shale Brittleness evaluation Mechanical property Lithological difference Reservoir stimulation |
| ISSN号 | 1672-5107 |
| DOI | 10.1016/j.petsci.2024.05.018 |
| 英文摘要 | Recently, a new promising type of marine shale gas reservoir, carbonate-rich shale, has been discovered. But the mechanical properties of this type of shale were still unrevealed and the corresponding reservoir stimulation design was lack of guidance. Using the deep downhole cores of an exploratory carbonate-rich shale gas well, the physical and mechanical parameters and failure mechanism of the whole reservoir section were acquired and evaluated systematically, by performing XRD, tri-axial compression, Brazilian splitting, and fracture toughness tests. A new model was established to evaluate the reservoir brittleness based on fracture morphology and stress-strain curve. Recommended strategy for reservoir stimulation was discussed. Results showed that (1) Carbonate-rich shale possessed high compressive strength and high Young's modulus, which were improved by 10.74% and 3.37% compared to that of siliceous shale. It featured high tensile strength and fracture toughness, with insignificant anisotropy. (2) With the content of carbonate minerals increasing, the shear failure morphology transformed from sparse and wide brittle fractures to diffusely distributed and subtle plastic cracks. (3) The brittleness index order was: siliceous shale, clay-rich shale, carbonate-rich shale, and limestone. (4) The special properties of carbonate-rich shale were rooted in the inherent feature of carbonate minerals (high strength, high elastic modulus, and cleavage structure), resulting in greater challenge in reservoirs stimulation. The above findings would promote the understanding of carbonate-rich shale reservoirs and provide reference for the optimum design of reservoir stimulation. (c) 2024 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/). |
| 资助项目 | Foundation of China[U22B60 03] ; Foundation of China[52104010] ; Foundation of China[52104046] |
| WOS研究方向 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001356188600001 |
| 出版者 | KEAI PUBLISHING LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/43126]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wang, Lei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Rock & Soil Mech, Key Lab Geomech & Geotech Engn Safety, Wuhan 430071, Hubei, Peoples R China 3.Chongqing Univ, State Key Lab Coal Mine Disaster Dynam & Control, Chongqing 400044, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bi, Zhen-Hui,Wang, Lei,Yang, Chun-He,et al. A new type of shale gas reservoirdcarbonate-rich shale: From laboratory mechanical characterization to field stimulation strategy[J]. PETROLEUM SCIENCE,2024,21(5):3047-3061. |
| APA | Bi, Zhen-Hui,Wang, Lei,Yang, Chun-He,Guo, Yin-Tong,Guo, Wu-Hao,&Yang, Han-Zhi.(2024).A new type of shale gas reservoirdcarbonate-rich shale: From laboratory mechanical characterization to field stimulation strategy.PETROLEUM SCIENCE,21(5),3047-3061. |
| MLA | Bi, Zhen-Hui,et al."A new type of shale gas reservoirdcarbonate-rich shale: From laboratory mechanical characterization to field stimulation strategy".PETROLEUM SCIENCE 21.5(2024):3047-3061. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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