The effect of analytical particle size on gas adsorption porosimetry of shale

被引:120
作者
Chen, Yanyan [1 ,2 ]
Wei, Lin [2 ]
Mastalerz, Maria [3 ]
Schimmelmann, Arndt [2 ]
机构
[1] PetroChina, Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
[2] Indiana Univ, Dept Geol Sci, Bloomington, IN 47405 USA
[3] Indiana Univ, Indiana Geol Survey, Bloomington, IN 47405 USA
关键词
Shale; Porosity; Adsorption; Kerogen transformation; Particle size; NORTHEASTERN BRITISH-COLUMBIA; MISSISSIPPIAN BARNETT SHALE; PORE STRUCTURE; SURFACE-AREA; ALBANY SHALE; POROSITY; SYSTEMS; PRESSURE; ROCKS; DISTRIBUTIONS;
D O I
10.1016/j.coal.2014.12.012
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Gas storage capacity and gas producibility of shale gas reservoirs are critically limited by shale porosity. In spite of its importance, porosimetric characterization of shale remains challenging due to highly heterogeneous structures, small average pore sizes, and wide pore size distributions. This study utilizes low-pressure N-2 and CO2 gas adsorption porosimetry to investigate the evolution of micro- and mesopores in a suite of 11 New Albany Shale samples across a wide range of thermal maturity corresponding to vitrinite reflection R-o values from 0.35 to 1.41%. Mesopore volumes follow a nonlinear evolutionary path starting with a maximum in immature shale (sample 472-1). Subsequent intermittent minima in mesopore volumes during early and late maturity are consistent with the transformation of kerogen during the early mature stage (sample 554-2) and secondary cracking of bitumen/oil at the late mature stage (sample respectively. Micropore volumes display a varying trend throughout thermal maturation, and are significantly controlled by total organic carbon contents. Both meso- and micropore volumes are positively correlated with clay content and tend to decrease with an increase in feldspar content. A reduction in grain size of shale samples for gas adsorption porosimetry prominently enhances mesopore volumes, whereas the effects on micropore volumes are variable. These findings may be associated with the fact that smaller particles are able to attain complete adsorption equilibrium quickly, which in turn reduces experimental artefacts during gas adsorption porosimetry. Crushing of shale not only alters the shape of gas adsorption hysteresis loops, but also tends to tighten the openings of hysteresis loops by enhancing the connectivity of pores and reducing the likelihood of gas being trapped during desorption. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:103 / 112
页数:10
相关论文
共 36 条
[1]   MICROPORE SIZE DISTRIBUTIONS OF CLAY MINERAL SYSTEMS [J].
AYLMORE, LAG ;
QUIRK, JP .
JOURNAL OF SOIL SCIENCE, 1967, 18 (01) :1-+
[2]   Geochemical evolution of organic-rich shales with increasing maturity: A STXM and TEM study of the Posidonia Shale (Lower Toarcian, northern Germany) [J].
Bernard, Sylvain ;
Horsfield, Brian ;
Schulz, Hans-Martin ;
Wirth, Richard ;
Schreiber, Anja ;
Sherwood, Neil .
MARINE AND PETROLEUM GEOLOGY, 2012, 31 (01) :70-89
[3]   Interaction of electrolyte molecules with carbon materials of well-defined porosity: characterization by solid-state NMR spectroscopy [J].
Borchardt, Lars ;
Oschatz, Martin ;
Paasch, Silvia ;
Kaskel, Stefan ;
Brunner, Eike .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2013, 15 (36) :15177-15184
[4]   Influence of different dry milling processes on the properties of an attapulgite clay, contribution of inverse gas chromatography [J].
Boudriche, L. ;
Chamayou, A. ;
Calvet, R. ;
Hamdi, B. ;
Balard, H. .
POWDER TECHNOLOGY, 2014, 254 :352-363
[5]   Characterization of gas shale pore systems by porosimetry, pycnometry, surface area, and field emission scanning electron microscopy/transmission electron microscopy image analyses: Examples from the Barnett, Woodford, Haynesville, Marcellus, and Doig units [J].
Chalmers, Gareth R. ;
Bustin, R. Marc ;
Power, Ian M. .
AAPG BULLETIN, 2012, 96 (06) :1099-1119
[6]   Light volatile liquid and gas shale reservoir potential of the Cretaceous Shaftesbury Formation in northeastern British Columbia, Canada [J].
Chalmers, Gareth R. L. ;
Bustin, R. Marc .
AAPG BULLETIN, 2012, 96 (07) :1333-1367
[7]   Pore structure characterization of North American shale gas reservoirs using USANS/SANS, gas adsorption, and mercury intrusion [J].
Clarkson, C. R. ;
Solano, N. ;
Bustin, R. M. ;
Bustin, A. M. M. ;
Chalmers, G. R. L. ;
He, L. ;
Melnichenko, Y. B. ;
Radlinski, A. P. ;
Blach, T. P. .
FUEL, 2013, 103 :606-616
[8]   Characterization of tight gas reservoir pore structure using USANS/SANS and gas adsorption analysis [J].
Clarkson, C. R. ;
Freeman, M. ;
He, L. ;
Agamalian, M. ;
Melnichenko, Y. B. ;
Mastalerz, M. ;
Bustin, R. M. ;
Radlinski, A. P. ;
Blach, T. P. .
FUEL, 2012, 95 (01) :371-385
[9]   The effect of pore structure and gas pressure upon the transport properties of coal: a laboratory and modeling study. 1. Isotherms and pore volume distributions [J].
Clarkson, CR ;
Bustin, RM .
FUEL, 1999, 78 (11) :1333-1344
[10]   Measurements of gas permeability and diffusivity of tight reservoir rocks: different approaches and their applications [J].
Cui, X. ;
Bustin, A. M. M. ;
Bustin, R. M. .
GEOFLUIDS, 2009, 9 (03) :208-223