| DOI: | 10.1306/06231413113
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| Scopus记录号: | 2-s2.0-84919344215
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| 论文题名: | The concept of joint saturation and its application |
| 作者: | Tan Y.; Johnston T.; Engelder T.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1558
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| EISSN: | 1558-9288
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| 出版年: | 2014
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| 发表日期: | 2014
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| 卷: | 98, 期:11 | | 起始页码: | 2347
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| 结束页码: | 2364
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| 语种: | 英语
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| Scopus关键词: | Fracture
; Hydraulic fracturing
; Joints (structural components)
; Appalachian basin
; Bending experiments
; Driving mechanism
; Gamma distribution
; Natural fracture
; Non-homogeneous Poisson process
; Probability modeling
; Saturation levels
; Probability distributions
; bending
; Devonian
; fracture network
; hydraulic fracture
; joint
; outcrop
; Poisson ratio
; saturation
; shrinkage
; structural geology
; Appalachians
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | Two of the major joint-driving mechanisms are joint-normal stretching and poroelastic shrinkage, and these lead to joint sets commonly associated with structural bending and natural hydraulic fracturing, respectively. Regardless of joint-driving mechanism, joint infilling is a nonhomogeneous Poisson process in the presence of stress shadows. Through probability modeling, we show that in all cases joint spacing is best fit with gamma distributions. The shape parameter of the best-fit gamma distribution to joint-spacing data is a quantitative means to assess the extent of saturation, which is represented in a new parameter, the jointsaturation ratio (JSR). To test the utility of JSR, we call upon published structural bending joint data (Elk Basin, Lilstock, and Rives plate-bending experiment). The shape parameters for these welldeveloped structural bending joints are equal to around three, corresponding to a JSR of approximately 30%. Using the same analysis on the spacing of natural hydraulic fractures collected from outcrops in the gas-prone Devonian sections of the Appalachian Basin, we find that natural hydraulic fractures differ in two aspects from structural bending joints. First, the joint spacing is proportional to bed thickness in bedded rocks but not in gas shale sections. Second, the joint saturation of natural hydraulic fractures is generally lower than in well-developed structural bending joints. Thus, the JSR is a means to distinguish the jointdriving mechanism and to represent joint-saturation level independent of bed thickness effects. It can be used to distinguish natural fractures from drilling-induced fractures and to improve the fracture-network modeling. Copyright © 2014. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84919344215&doi=10.1306%2f06231413113&partnerID=40&md5=14a10a2adcee622ba930609c0d9293b3
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/13129
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| Appears in Collections: | 过去全球变化的重建
科学计划与规划
全球变化的国际研究计划
影响、适应和脆弱性
气候变化与战略
气候减缓与适应
气候变化事实与影响
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| Recommended Citation: | |
Tan Y.,Johnston T.,Engelder T.. The concept of joint saturation and its application[J]. AAPG Bulletin,2014-01-01,98(11)
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