Contributions of non-tectonic micro-fractures to hydraulic fracturing-A numerical investigation based on FSD model
文献类型：期刊论文
| 作者 | Wang Yu; Li Xiao; Zhao ZhiHeng; Zhou RunQing; Zhang Bo; Li GuanFang |
| 刊名 | SCIENCE CHINA-EARTH SCIENCES
 |
| 出版日期 | 2016-04-01 |
| 卷号 | 59期号:4页码:851-865 |
| 关键词 | Non-tectonic micro-fracture Hydraulic fracturing Fracturing network Numerical simulation |
| DOI | 10.1007/s11430-015-5232-1 |
| 文献子类 | Article |
| 英文摘要 | Shale gas has been discovered in the Upper Triassic Yanchang Formation, Ordos Basin, China. Due to the weak tectonic activities in which the shale plays, core observations indicate abundant random non-tectonic micro- fractures in the producing shales. The non-tectonic micro-fractures are different from tectonic fractures and are characterized by being irregular, curved, discontinuous, and randomly distributed. The role of micro-fractures in hydraulic fracturing for shale gas development is currently poorly understood yet potentially critical. Two-dimensional computational modeling studies have been used in an initial attempt toward understanding how naturally random fractured reservoirs respond during hydraulic fracturing. The aim of the paper is to investigate the effect of random non-tectonic fractures on hydraulic fracturing. The numerical models with random non-tectonic micro-fractures are built by extracting the fractures of rock blocks after repeated heating and cooling, using a digital image process. Simulations were conducted as a function of: (1) the in-situ stress ratio; (2) internal friction angle of random fractures; (3) cohesion of random fractures; (4) operational variables such as injection rate; and (5) variable injection rate technology. A sensitivity study reveals a number of interesting observations resulting from these parameters on the shear stimulation in a natural fracture system. Three types of fracturing networks were observed from the studied simulations, and the results also show that variable injection rate technology is most promising for producing complex fracturing networks. This work strongly links the production technology and geomechanical evaluation. It can aid in the understanding and optimization of hydraulic fracturing simulations in naturally random fractured reservoirs. |
| WOS关键词 | SOUTHEASTERN ORDOS BASIN ; CHINA IMPLICATIONS ; SHALE ; ROCK ; STRESS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000372544800016 |
| 资助机构 | National Natural Science Foundation of China(41227901 ; National Natural Science Foundation of China(41227901 ; China Postdoctoral Science Foundation(2015M571118) ; China Postdoctoral Science Foundation(2015M571118) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030000 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030000 ; 41330643 ; 41330643 ; XDB10030300 ; XDB10030300 ; 41502294) ; 41502294) ; XDB10050400) ; XDB10050400) ; National Natural Science Foundation of China(41227901 ; National Natural Science Foundation of China(41227901 ; China Postdoctoral Science Foundation(2015M571118) ; China Postdoctoral Science Foundation(2015M571118) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030000 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030000 ; 41330643 ; 41330643 ; XDB10030300 ; XDB10030300 ; 41502294) ; 41502294) ; XDB10050400) ; XDB10050400) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/62037]  |
| 专题 | 地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室 |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Yu,Li Xiao,Zhao ZhiHeng,et al. Contributions of non-tectonic micro-fractures to hydraulic fracturing-A numerical investigation based on FSD model[J]. SCIENCE CHINA-EARTH SCIENCES,2016,59(4):851-865. |
| APA | Wang Yu,Li Xiao,Zhao ZhiHeng,Zhou RunQing,Zhang Bo,&Li GuanFang.(2016).Contributions of non-tectonic micro-fractures to hydraulic fracturing-A numerical investigation based on FSD model.SCIENCE CHINA-EARTH SCIENCES,59(4),851-865. |
| MLA | Wang Yu,et al."Contributions of non-tectonic micro-fractures to hydraulic fracturing-A numerical investigation based on FSD model".SCIENCE CHINA-EARTH SCIENCES 59.4(2016):851-865. |
入库方式： OAI收割
来源：地质与地球物理研究所
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