Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1306/0918181610617114 |
Mini thief zones: Subcentimeter sedimentary features enhance fracture connectivity in shales | |
McCay, Alistair T.1,2; Shipton, Zoe K.1; Lunn, Rebecca J.1; Gale, Julia F.3 | |
2019-04-01 | |
发表期刊 | AAPG BULLETIN
![]() |
ISSN | 0149-1423 |
EISSN | 1558-9153 |
出版年 | 2019 |
卷号 | 103期号:4页码:951-971 |
文章类型 | Article |
语种 | 英语 |
国家 | Scotland; USA |
英文摘要 | This study examines the influences on fluid flow within a shale outcrop where the networks of two distinct paleoflow episodes have been recorded by calcite-filled veins and green alteration halos. Such direct visualization of flow networks is relatively rare and provides valuable information of fluid-flow behavior between core and seismic scale. Detailed field mapping, fracture data, and sedimentary logging were used over a 270 m(2)(2910 ft(2)) area to characterize the paleo-fluid-flow networks in the shale. Distal remnants of turbidite flow deposits are present within the shale as very thin (1-10 mm [0.04-0.4 in.]) fine-grained sandstone bands. The shale is cut by a series of conjugate faults and an associated fracture network, all at a scale smaller than seismic detection thresholds. The flow episodes used fluid-flow networks consisting of subgroups of both the fractures and the thin turbidites. The first fluid-flow episode network was mainly comprised of thin turbidites and shear fractures, whereas the network of the second fluid-flow episode was primarily small joints (opening mode fractures ) connecting the turbidites. The distribution of turbidite thicknesses follows a negative exponential trend. which reflects the distribution of thicker turbidites recorded in previous studies. Fracture density varies on either side of faults and is highest in an area between closely spaced faults. Better predictions of hydraulic properties of sedimentary-structural networks for resource evaluation can be informed from such outcrop subseismic scale characterization. These relationships between the subseismic features could be applied when populating discrete fracture networks models, for example, to investigate such sedimentary-structural flow networks in exploration settings. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000464593300007 |
WOS关键词 | FLUID-FLOW ; GEOLOGICAL STORAGE ; NATURAL FRACTURES ; FAULT ZONES ; BASIN ; FACIES ; CALIFORNIA ; HISTORY ; LEAKAGE ; PERMEABILITY |
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/181867 |
专题 | 地球科学 |
作者单位 | 1.Univ Strathclyde, Dept Civil & Environm Engn, Engn Geosci & Geomech, Glasgow, Lanark, Scotland; 2.Univ Glasgow, Sch Engn, Power & Energy Res Div, Glagsow, Scotland; 3.Univ Texas Austin, Bur Econ Geol, Austin, TX USA |
推荐引用方式 GB/T 7714 | McCay, Alistair T.,Shipton, Zoe K.,Lunn, Rebecca J.,et al. Mini thief zones: Subcentimeter sedimentary features enhance fracture connectivity in shales[J]. AAPG BULLETIN,2019,103(4):951-971. |
APA | McCay, Alistair T.,Shipton, Zoe K.,Lunn, Rebecca J.,&Gale, Julia F..(2019).Mini thief zones: Subcentimeter sedimentary features enhance fracture connectivity in shales.AAPG BULLETIN,103(4),951-971. |
MLA | McCay, Alistair T.,et al."Mini thief zones: Subcentimeter sedimentary features enhance fracture connectivity in shales".AAPG BULLETIN 103.4(2019):951-971. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论