Calculating the number of radial cracks around a wellbore fractured by liquid CO_2 phase transition blasting technology
文献类型：期刊论文
| 作者 | Jiang Kun; Deng Shouchun; Li Yixuan; Li Haibo
|
| 刊名 | JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
 |
| 出版日期 | 2024 |
| 卷号 | 16期号:11页码:4515 |
| 关键词 | Liquid CO_2 phase transition blasting (LCPTB) Rock fracturing Fracture number Physical model experiment |
| ISSN号 | 1674-7755 |
| 英文摘要 | Integrating liquid CO_2 phase transition blasting (LCPTB) technology with hydraulic fracturing (HF) methods can help reduce wellbore damage, create multiple radial fractures, and establish a complex fracture network. This approach significantly increases the recovery efficiency of low-permeability oil and gas fields. Accurately calculating the number of fractures caused by LCPTB is necessary to predict production enhancement effects and optimize subsequent HF designs. However, few studies are reported on large-scale physical model experiments in terms of a method for calculating the fracture number. This study analyzed the initiation and propagation of cracks under LCPTB, derived a calculation formula for crack propagation radius under stress waves, and then proposed a new, fast, and accurate method for calculating the fracture number using the principle of mass conservation. Through ten rock-breaking tests using LCPTB, the study confirmed the effectiveness of the proposed calculation approach and elucidated the variation rule of explosion pressure, rock-breaking scenario, and the impact of varying parameters on fracture number. The results show that the new calculation method is suitable for fracturing technologies with high pressure rates. Recommendations include enlarging the diameter of the fracturing tube and increasing the liquid CO_2 mass in the tube to enhance fracture effectiveness. Moreover, the method can be applied to other fracturing technologies, such as explosive fracturing (EF) within HF formations, indicating its broader applicability and potential impact on optimizing unconventional resource extraction technologies. |
| 语种 | 英语 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/37980]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 中国科学院武汉岩土力学研究所 |
| 推荐引用方式 GB/T 7714 | Jiang Kun,Deng Shouchun,Li Yixuan,et al. Calculating the number of radial cracks around a wellbore fractured by liquid CO_2 phase transition blasting technology[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2024,16(11):4515. |
| APA | Jiang Kun,Deng Shouchun,Li Yixuan,&Li Haibo.(2024).Calculating the number of radial cracks around a wellbore fractured by liquid CO_2 phase transition blasting technology.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,16(11),4515. |
| MLA | Jiang Kun,et al."Calculating the number of radial cracks around a wellbore fractured by liquid CO_2 phase transition blasting technology".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 16.11(2024):4515. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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