| DOI: | 10.1306/08011312078
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| Scopus记录号: | 2-s2.0-84899498267
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| 论文题名: | Effect of pore structure on the producibility of tight-gas sandstones |
| 作者: | Sakhaee-Pour A.; Bryant S.L.
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| 刊名: | AAPG Bulletin
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| ISSN: | 0149-1568
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| EISSN: | 1558-9298
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| 出版年: | 2014
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| 发表日期: | 2014
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| 卷: | 98, 期:4 | | 起始页码: | 663
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| 结束页码: | 694
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| 语种: | 英语
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| Scopus关键词: | Forecasting
; Forestry
; Gases
; Hydraulic fracturing
; Matrix algebra
; Mercury (metal)
; Porosity
; Porous plates
; Sandstone
; Textures
; Estimated ultimate recoveries
; Intergranular porosity
; Laboratory measurements
; Mercury intrusion
; Mercury withdrawal
; Natural fracture
; Petrophysical properties
; Sandstone reservoirs
; Pore structure
; hydraulic fracture
; imbibition
; petrogenesis
; pore space
; sandstone
; topology
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| Scopus学科分类: | Energy
; Earth and Planetary Sciences
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| 英文摘要: | The estimated ultimate recovery (EUR) is one of the most significant properties of tight-gas sandstone reservoirs, but it remains difficult to predict. Estimated ultimate recovery is dependent on the success of stimulation by hydraulic fracturing, the existence and connectivity of natural fractures, and as illustrated in this article, the pore structure of the matrix. Here, we analyze the lab measurements that are indicative of the pore structure, and then we predict the effect of pore structure on producibility. We develop a relationship between the EUR of tight-gas sandstones and their petrophysical properties measured by drainage and imbibition tests (mercury intrusion, withdrawal, and porous plate) and by resistivity analyses. We use the ratio of residual mercury saturation after mercury withdrawal (Sgr) to initial mercury saturation (Sg¡), which is the saturation at the start of withdrawal, as a measure of gas likely to be trapped in the matrix during production and, hence, a proxy for EUR. A multitype pore space model is required to explain mercury intrusion capillary pressures in these rocks. Implications of this model are supported by other available laboratory measurements. The model comprises a conventional network model and a treelike pore structure (an acyclic network) that mimic the intergranular and intragranular void spaces, respectively. The notion of the treelike pore structure is introduced here for the first time in the context of tight-gas sandstones. Applying the multitype model to porous plate data, we classify the pore spaces of rocks into intergranular dominant, intermediate, and intragranular dominant. This pore space classification is topological and is not based on scale or size. These classes have progressively less drainage and imbibition hysteresis, which leads to the prediction that significantly more hydrocarbon is recoverable from intragranular porosity than intergranular porosity. Available field data (production logs) Copyright ©2014. The American Association of Petroleum Geologists. All rights reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899498267&doi=10.1306%2f08011312078&partnerID=40&md5=f2cf78d00872b6eb815844b8562814b0
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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/13139
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| Recommended Citation: | |
Sakhaee-Pour A.,Bryant S.L.. Effect of pore structure on the producibility of tight-gas sandstones[J]. AAPG Bulletin,2014-01-01,98(4)
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