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Shale Pore Characterization Using NMR Cryoporometry with Octamethylcyclotetrasiloxane as the Probe Liquid

文献类型：期刊论文

作者Zhang, Qian1,2; Dong, Yanhui1,2,3,4; Liu, Shimin3,4; Elsworth, Derek3,4; Zhao, Yixin5
刊名ENERGY & FUELS
出版日期2017-07-01
卷号31期号:7页码:6951-6959
ISSN号0887-0624
DOI10.1021/acs.energyfuels.7b00880
文献子类Article
英文摘要Fluid flow and chemical transport within shale are determined by the pore size distribution and its connectivity. Because of both low porosity and small (nanometer) pore size, common characterization methods, such as mercury injection capillary pressure (MICP) and the nitrogen adsorption method (NAM), have limited resolution and applicability. Nuclear magnetic resonance cryoporometry (NMR-C) is a novel characterization method that exploits the Gibbs-Thomson effect and provides a complementary method of characterizing aggregate pore structure at fine resolution. We use water and octamethylcyclotetrasiloxane (OMCTS) as probe liquids for NMR-C on controlled porosity samples of SBA, CPG, and shale. The analysis accommodates the influence of melting temperature, K-GT, and surface layer thickness, epsilon, on the pore size distribution (PSD). Calibration experiments permeated with the two fluids demonstrate that OMCTS has a larger K-GT and that the PSD for different cryoporometric materials is not subject to different surface curvatures of pores. Furthermore, the PSDs for shale are characterized by MICP, NAM, and NMR-C, which give comparable results. Shale samples have heterogeneous pore distributions with peak pore diameters at similar to 3 nm and mesopore diameters of 2-50 nm comprising the main storage volume. Because of its larger molecular size and correspondingly large K-GT, NMR-C-OMCTS is able to characterize pores to 2 mu m but misses pores smaller than 5 nm. Meanwhile, NMR-C using OMCTS images a broader PSD than that by N1V1R-C-Water due to the propensity of OMCTS to imbibe into the organic matter relative to that of water. NMR-C-OMCTS shows the superiority and potential due to the higher signal/noise (S/N) ratio and wider measurement range up to 2 mu m. With regard to shales, one insight is that 115 K nm is an appropriate K-GT value for measurements with the surface layer thickness of 2 rim. Moreover, the applications of NMR-C-OMCTS will come down to other rocks through further research.
WOS关键词MAGNETIC-RESONANCE CRYOPOROMETRY ; MERCURY INTRUSION ; MELTING BEHAVIOR ; GAS-ADSORPTION ; SURFACE-AREA ; WATER ; SILICA ; USANS/SANS ; NANOPORES ; H-1-NMR
WOS研究方向Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:000406356600029
出版者AMER CHEMICAL SOC
资助机构Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030601) ; Youth Innovation Promotion Association CAS(2016063) ; China Scholarship Council(201504910044) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030601) ; Youth Innovation Promotion Association CAS(2016063) ; China Scholarship Council(201504910044) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030601) ; Youth Innovation Promotion Association CAS(2016063) ; China Scholarship Council(201504910044) ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030601) ; Youth Innovation Promotion Association CAS(2016063) ; China Scholarship Council(201504910044)
源URL[http://ir.iggcas.ac.cn/handle/132A11/61854]  
专题地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者Dong, Yanhui
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Penn State Univ, Dept Energy & Mineral Engn, Ctr G3, University Pk, PA 16802 USA
4.Penn State Univ, EMS Energy Inst, University Pk, PA 16802 USA
5.China Univ Min & Technol, Coll Resources Safety Engn, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Qian,Dong, Yanhui,Liu, Shimin,et al. Shale Pore Characterization Using NMR Cryoporometry with Octamethylcyclotetrasiloxane as the Probe Liquid[J]. ENERGY & FUELS,2017,31(7):6951-6959.
APA Zhang, Qian,Dong, Yanhui,Liu, Shimin,Elsworth, Derek,&Zhao, Yixin.(2017).Shale Pore Characterization Using NMR Cryoporometry with Octamethylcyclotetrasiloxane as the Probe Liquid.ENERGY & FUELS,31(7),6951-6959.
MLA Zhang, Qian,et al."Shale Pore Characterization Using NMR Cryoporometry with Octamethylcyclotetrasiloxane as the Probe Liquid".ENERGY & FUELS 31.7(2017):6951-6959.

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来源：地质与地球物理研究所

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