Investigation on cracking propagation patterns in hydraulic fracturing under different vug distributions: Experimental and numerical case
文献类型：期刊论文
| 作者 | Ma, Dongdong3,4; Wu, Yu3,4; Yin, Dawei1,2; Ge, Yao1,2; Hu, Dawei5; Zhou, Hui5; Geng, Haozhe3,4 |
| 刊名 | ENGINEERING FRACTURE MECHANICS
 |
| 出版日期 | 2024-02-21 |
| 卷号 | 297页码:15 |
| 关键词 | Carbonate Vug distribution Cracking propagation pattern DEM |
| ISSN号 | 0013-7944 |
| DOI | 10.1016/j.engfracmech.2024.109863 |
| 英文摘要 | Natural vugs are developed in geothermal reservoirs. Communication of natural vugs can effectively improve reservoir stimulation, but the vug distribution affects its propagation pattern. In this work, large-size samples (500 x 500 x 500 mm) made of carbonate-like materials were prepared, and a series of true triaxial hydraulic fracturing tests were carried out to investigate the influence of the vug orientation and relative orientation between vugs on the propagation pattern. Moreover, the discrete element method (DEM) was used to further elucidate the effect of vug distribution on the cracking propagation mechanism. The results obtained that the increase in the vug orientation leads to an increase in peak pressure, and the relative orientation has less effect on peak pressure. In terms of propagation pattern, at low vug orientation and relative orientation (i.e. 0 degrees, 30 degrees), the induced crack will penetrate or deflect through the vugs, while at 45 degrees, the induced cracks deflect but do not interpenetrate the vugs. Accordingly, numerical simulations demonstrate that the crack deflection induced by the vug is mainly due to microcracks generated by tensile stress concentration around the vugs under the pore pressure, but the high vug orientation suppresses the tensile stress domains, accompanied with an increase in the percentage of shear cracks with vug orientation. These results may improve the understanding of vuggy carbonate reservoir stimulation. |
| 资助项目 | National Key R&D Program of China[2022YFE0128300] |
| WOS研究方向 | Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001167268500001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/40746]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Wu, Yu |
| 作者单位 | 1.Shandong Univ Sci & Technol, State Key Lab Mine Disaster Prevent & Control, Qingdao 266590, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China 4.China Univ Min & Technol, Sch Mech & Civil Engn, Xuzhou 221116, Jiangsu, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Dongdong,Wu, Yu,Yin, Dawei,et al. Investigation on cracking propagation patterns in hydraulic fracturing under different vug distributions: Experimental and numerical case[J]. ENGINEERING FRACTURE MECHANICS,2024,297:15. |
| APA | Ma, Dongdong.,Wu, Yu.,Yin, Dawei.,Ge, Yao.,Hu, Dawei.,...&Geng, Haozhe.(2024).Investigation on cracking propagation patterns in hydraulic fracturing under different vug distributions: Experimental and numerical case.ENGINEERING FRACTURE MECHANICS,297,15. |
| MLA | Ma, Dongdong,et al."Investigation on cracking propagation patterns in hydraulic fracturing under different vug distributions: Experimental and numerical case".ENGINEERING FRACTURE MECHANICS 297(2024):15. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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