Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016GL072165 |
Fracture capture of organic pores in shales | |
Daigle, Hugh1; Hayman, Nicholas W.2; Kelly, Eric D.3; Milliken, Kitty L.4; Jiang, Han1 | |
2017-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Shales are heterogeneous media with porosity at many scales and in many microtextural positions, including within organic matter and clay aggregates. Because these materials have contrasting mechanical properties, it remains unclear how induced fractures manage to connect with this porosity whether during hydrocarbon production, wastewater injection, or carbon-capture-and-storage efforts. To explore porosity changes related to fracturing, we experimentally failed shale samples in a triaxial load apparatus and observed changes in microstructure through scanning electron microscopy, low-pressure nitrogen sorption, and nuclear magnetic resonance. We observed a system of microcracks, many of which were likely experimentally induced and localized on grain boundaries. In some cases these fractures propagated into regions of natural porosity in organic matter. In the subsurface this fracture capture likely enhances pore connectivity, but only selectively depending upon mechanical conditions. Fracture capture is one possible mechanism by which multiscale compositional heterogeneity in shales may affect rheological heterogeneity. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000398183700014 |
WOS关键词 | BARNETT SHALE ; SIZE DISTRIBUTION ; NANOMETER-SCALE ; SURFACE-AREA ; PERMEABILITY ; RESERVOIR ; MUDROCKS ; NETWORK ; GEOMECHANICS ; SIMULATION |
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/26498 |
专题 | 气候变化 |
作者单位 | 1.Univ Texas Austin, Dept Petr & Geosyst Engn, Austin, TX 78712 USA; 2.Univ Texas Austin, Inst Geophys, Austin, TX USA; 3.Univ Texas Austin, Dept Geol Sci, Austin, TX USA; 4.Univ Texas Austin, Bur Econ Geol, Austin, TX USA |
推荐引用方式 GB/T 7714 | Daigle, Hugh,Hayman, Nicholas W.,Kelly, Eric D.,et al. Fracture capture of organic pores in shales[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(5). |
APA | Daigle, Hugh,Hayman, Nicholas W.,Kelly, Eric D.,Milliken, Kitty L.,&Jiang, Han.(2017).Fracture capture of organic pores in shales.GEOPHYSICAL RESEARCH LETTERS,44(5). |
MLA | Daigle, Hugh,et al."Fracture capture of organic pores in shales".GEOPHYSICAL RESEARCH LETTERS 44.5(2017). |
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