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DOI | 10.1002/2017GL074282 |
Postinjection Normal Closure of Fractures as a Mechanism for Induced Seismicity | |
Ucar, E.1; Berre, I.1,2; Keilegavlen, E.1 | |
2017-10-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | Norway |
英文摘要 | Understanding the controlling mechanisms underlying injection-induced seismicity is important for optimizing reservoir productivity and addressing seismicity-related concerns related to hydraulic stimulation in Enhanced Geothermal Systems. Hydraulic stimulation enhances permeability through elevated pressures, which cause normal deformations and the shear slip of preexisting fractures. Previous experiments indicate that fracture deformation in the normal direction reverses as the pressure decreases, e.g., at the end of stimulation. We hypothesize that this normal closure of fractures enhances pressure propagation away from the injection region and significantly increases the potential for postinjection seismicity. To test this hypothesis, hydraulic stimulation is modeled by numerically coupling flow in the fractures and matrix, fracture deformation, and matrix deformation for a synthetic reservoir in which the flow and mechanics are strongly affected by a complex three-dimensional fracture network. The role of the normal closure of fractures is verified by comparing simulations conducted with and without the normal closure effect. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413921300010 |
WOS关键词 | INJECTION-INDUCED SEISMICITY ; ENHANCED GEOTHERMAL SYSTEMS ; SOULTZ-SOUS-FORETS ; FLUID INJECTIONS ; MODEL ; ROCK ; BASEL ; DEFORMATION ; STIMULATION ; MIGRATION |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/26995 |
专题 | 气候变化 |
作者单位 | 1.Univ Bergen, Dept Math, Bergen, Norway; 2.Christian Michelsen Res, Bergen, Norway |
推荐引用方式 GB/T 7714 | Ucar, E.,Berre, I.,Keilegavlen, E.. Postinjection Normal Closure of Fractures as a Mechanism for Induced Seismicity[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(19). |
APA | Ucar, E.,Berre, I.,&Keilegavlen, E..(2017).Postinjection Normal Closure of Fractures as a Mechanism for Induced Seismicity.GEOPHYSICAL RESEARCH LETTERS,44(19). |
MLA | Ucar, E.,et al."Postinjection Normal Closure of Fractures as a Mechanism for Induced Seismicity".GEOPHYSICAL RESEARCH LETTERS 44.19(2017). |
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