Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019WR024893 |
A Multiscale Study on Shale Wettability: Spontaneous Imbibition Versus Contact Angle | |
Siddiqui, Mohammed Abdul Qadeer1; Chen, Xiao1; Iglauer, Stefan2; Roshan, Hamid1 | |
2019-06-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:6页码:5012-5032 |
文章类型 | Article |
语种 | 英语 |
国家 | Australia |
英文摘要 | Environmental and technical issues associated with hydraulic fracturing fluid leak-off and its low recovery in clay-rich shale reservoirs has challenged the energy sector. One of the main hypothesized mechanisms for the uptake of fracturing fluid is fluid imbibition due to capillary forces that are a strong function of the rock's wettability. However, shale wettability estimated by contact angle and spontaneous imbibition experiments are highly inconsistent throughout the literature. It is therefore critical to shed light on the possible reasons for such discrepancies and identify the superior technique. In order to characterize the physical processes from microscale to macroscale, the contact angles and spontaneous imbibition characteristics of shale samples were measured using aqueous ionic solutions (NaCl, KCl, CaCl2, and MgCl2) at different concentrations (0, 0.1, and 0.5 M) and oil (Soltrol-130). The internal structure of the samples exposed to deionized water was imaged by three-dimensional X-ray micro-computed tomography before and after spontaneous imbibition at both unconfined and confined stress states. Additionally, the structure of all samples exposed to each ionic solution was analyzed via environmental scanning electron microscopy. Experimental observations were further substantiated by combining digital image correlation with Poisson-Boltzmann analysis to assess the hydration-induced strains. It was shown that while spontaneous imbibition is a more realistic measurement for liquids, results obtained under unconfined condition can be highly biased due to additional forces acting (e.g., osmotic or hydration forces) and also potential microstructural alterations. Thus, spontaneous imbibition measured under reservoir stress condition is strongly recommended for shale wettability estimation. |
英文关键词 | shales hydrostatic stress hydration hydraulic fracturing microfractures |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477616900029 |
WOS关键词 | MISSISSIPPIAN BARNETT SHALE ; DIGITAL IMAGE CORRELATION ; NORTH-CENTRAL TEXAS ; FORT-WORTH BASIN ; UNDERSTANDING WETTABILITY ; WATER IMBIBITION ; FLUID CHEMISTRY ; SURFACE-AREA ; GAS SHALES ; DROP SIZE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/183983 |
专题 | 资源环境科学 |
作者单位 | 1.Univ New South Wales, Sch Mineral & Energy Resources Engn, Kensington, NSW, Australia; 2.Edith Cowan Univ, Sch Engn, Joondalup, WA, Australia |
推荐引用方式 GB/T 7714 | Siddiqui, Mohammed Abdul Qadeer,Chen, Xiao,Iglauer, Stefan,et al. A Multiscale Study on Shale Wettability: Spontaneous Imbibition Versus Contact Angle[J]. WATER RESOURCES RESEARCH,2019,55(6):5012-5032. |
APA | Siddiqui, Mohammed Abdul Qadeer,Chen, Xiao,Iglauer, Stefan,&Roshan, Hamid.(2019).A Multiscale Study on Shale Wettability: Spontaneous Imbibition Versus Contact Angle.WATER RESOURCES RESEARCH,55(6),5012-5032. |
MLA | Siddiqui, Mohammed Abdul Qadeer,et al."A Multiscale Study on Shale Wettability: Spontaneous Imbibition Versus Contact Angle".WATER RESOURCES RESEARCH 55.6(2019):5012-5032. |
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