Visualization and quantitative statistics of experimental hydraulic fracture network based on optical scanning
文献类型：期刊论文
| 作者 | Yang, Hanzhi; Wang, Lei; Yang, Chunhe; Guo, Yintong; Guo, Wuhao; Bi, Zhenhui; Zhao, Guokai |
| 刊名 | JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 105 |
| ISSN号 | 1875-5100 |
| 关键词 | Hydraulic fracturing Fracture network Statistical regularity Angle distribution Spatial variation |
| 英文摘要 | The formation of hydraulic fracture-network is an important goal for stable and increased production of unconventional oil and gas resources. However, due to the extremely complex mechanical behavior of hydraulic-fracture propagation, there is still a lack of fine, effective and systematic evaluation methods on 3D fracture-network structure. The quantitative characterization of hydraulic-fractures is of great significance to reveal the law of fracture propagation and to evaluate the reservoir stimulation effectiveness reasonably. Although the micro-cracks evolution process follows a random rather than deterministic pattern, the overall fracture morphology is featuring statistical regularity. In this study, after the indoor hydraulic-fracturing simulation experiments of the tight sandstone specimens, 3D optical scanning was used to visualize the fracture-network. On this basis, two aspects of quantitative statistics of 3D complex fracture-networks were established by plane and sphere cuttings for the first time, including angle distribution statistics and spatial variation statistics. Comparative analyses with reported methods showed that, the overall deflection of the macroscopic fracture-networks varies synchronously with the local roughness of the main hydraulic fractures closest to the well-bore, which satisfied exponential function or power-law function relationship between them. The variation of the area proportion with the propagation radius reflects the specific fracture propagation process such as crack initiation, bifurcation and arrest, and could be used to assess the complexity of the fracture-network. Moreover, a new stimulation evaluation index E-s was established by comprehensively considering the stimulated-reservoir-area, the dispersion degree of the angle distribution and the complexity of spatial variation for 3D fracture-network. The insights gained warrant further applicability on hydraulic-fracturing in the actual engineering scale. |
| 学科主题 | Energy & Fuels ; Engineering |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCI LTD |
| WOS记录号 | WOS:000888513000003 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34751]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chongqing University; 2.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS |
| 推荐引用方式 GB/T 7714 | Yang, Hanzhi,Wang, Lei,Yang, Chunhe,et al. Visualization and quantitative statistics of experimental hydraulic fracture network based on optical scanning[J]. JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,2022,105. |
| APA | Yang, Hanzhi.,Wang, Lei.,Yang, Chunhe.,Guo, Yintong.,Guo, Wuhao.,...&Zhao, Guokai.(2022).Visualization and quantitative statistics of experimental hydraulic fracture network based on optical scanning.JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING,105. |
| MLA | Yang, Hanzhi,et al."Visualization and quantitative statistics of experimental hydraulic fracture network based on optical scanning".JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING 105(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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