Changes of Slip Rate and Slip-Plane Orientation by Fault Geometrical Complexities During Fluid Injection
文献类型：期刊论文
| 作者 | Zhang, Xi; Wu, Bisheng; Jeffrey, Robert G.; Yang, Diansen; Chen, Weizhong; Zhang, Fengshou |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2019 |
| 卷号 | 124期号:8页码:9226-9246 |
| 关键词 | fluid flow along a fault segments rupturing coherently hydraulic fracture model transient slip patterns permeability changes |
| ISSN号 | 2169-9313 |
| DOI | 10.1029/2019JB017856 |
| 英文摘要 | The injection-induced slip of a fault containing along-the-fault geometrical complexities such as permeable cracks, dilational jogs and branches, was studied numerically using a plane-strain hydraulic fracture model. The fault is modeled by placing complexities evenly spaced on either side of the inlet where fluid coming from a steady source is injected at a constant rate. The fault slip obeys the Coulomb friction law with slip weakening of the coefficient of friction. The applied shear stress is less than the residual fault strength, corresponding to a situation where a fault undergoes stable slip behind a slowly advancing rupture front. The numerical results show that the segments of complexity may not only delay slip zone extension and fluid flow, but temporarily increase slip rates. Short-term faster slip rates occur after cracks and jogs are pressurized. The slip rate can reach values typical of microearthquake events, accompanied by rising and then dropping pressure and producing a stress release. Especially, the discontinuous slip sources are separated by the right-angle jogs that do not slip. The slip on branches can be activated by fluid invasion and an associated normal effective stress reduction, and the slow slip sources eventually move from the fault to the branches. Even if a hydraulic fracturing treatment presents a low risk of generating dynamic slip, when fractures intersect faults containing geometrical complexities, fast slip events may be induced. The spatiotemporally varying slip rates and patterns presented provide an alternative interpretation for recorded seismic slip signals. |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000491283500087 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/14918]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.SCT Operat Ltd, Wollongong, NSW, Australia; 2.CSIRO Energy, Melbourne, Vic, Australia; 3.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing, Peoples R China; 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Xi,Wu, Bisheng,Jeffrey, Robert G.,et al. Changes of Slip Rate and Slip-Plane Orientation by Fault Geometrical Complexities During Fluid Injection[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2019,124(8):9226-9246. |
| APA | Zhang, Xi,Wu, Bisheng,Jeffrey, Robert G.,Yang, Diansen,Chen, Weizhong,&Zhang, Fengshou.(2019).Changes of Slip Rate and Slip-Plane Orientation by Fault Geometrical Complexities During Fluid Injection.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,124(8),9226-9246. |
| MLA | Zhang, Xi,et al."Changes of Slip Rate and Slip-Plane Orientation by Fault Geometrical Complexities During Fluid Injection".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 124.8(2019):9226-9246. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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