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Clay mineralogy and shale instability: an alternative conceptual analysis

Published online by Cambridge University Press:  27 February 2018

M. J . Wilson  and
L. Wilson
M. J . Wilson*
Affiliation:
James Hutton Institute, Craigiebuckler, Aberdeen
L. Wilson
Affiliation:
Corex(UK) Ltd, Howe Moss Drive, Aberdeen, UK
*
*E-mail: [email protected]
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Abstract

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The instability of shales in drilled formations leads to serious operational problems with major economic consequences for petroleum exploration and production. It is generally agreed that the nature of the clay minerals in shale formations is a primary causative factor leading to their instability, although the exact mechanism involved is more debateable. Currently, the principal cause of shale instability is considered to be volume expansion following the osmotic swelling of Nasmectite. However, illitic and kaolinitic shales may also be unstable, so that interlayer expansion cannot therefore be considered as a universal causative mechanism of shale instability. This review considers alternative scenarios of shale instability where the major clay minerals are smectite, illite, mixed-layer illite-smectite (I/S) and kaolinite respectively. The influence of interacting factors that relate to shale clay mineralogy such as texture, structure and fabric are discussed, as are the pore size distribution and the nature of water in clays and shales and how these change with increasing depth of burial. It is found from the literature that the thickness of the diffuse double layer (DDL) of the aqueous solutions associated with the charged external surfaces of clay minerals is probably of the same order or even thicker than the sizes of a significant proportion of the pores found in shales. In these circumstances, overlap of the DDLs associated with exposed outer surfaces of clay minerals on opposing sides of micropores (<2 nm in diameter) and mesopores (2–50 nm in diameter) in a lithostatically compressed shale would bring about electrostatic repulsion and lead to increased pore/ hydration pressure in smectitic, illitic and even kaolinitic shales. This pressure would be inhibited by the use of more concentrated K-based fluids which effectively shrink the thickness of the DDL towards the clay mineral surfaces in the pore walls. The use of soluble polymers would also encapsulate these clay mineral surfaces and so inhibit their hydration. In this scenario, the locus of action with respect to shale instability and its inhibition is moved from the interlamellar space of the smectitic clays to the charged external surfaces of the various clay minerals bounding the walls of the shale pores.

Keywords

shale instabilitysmectitic shaleillitic shalekaolinitic shaleshale waterdiffuse double layershale pores
Type
Research Article
Information
Clay Minerals , Volume 49 , Issue 2 , April 2014 , pp. 127 - 145
Creative Commons
Creative Common License - CCCreative Common License - BY
Copyright © The Mineralogical Society of Great Britain and Ireland 2014 This is an Open Access article, distributed under the terms of the Creative Commons Attribution license. (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2014

References

Anderson, R.L., Ratcliffe, I., Greenwell, H.C., Williams, P.A., Cliffe, S. & Coveney, P.V. (2010) Clay swelling – A challenge in the oilfield. Earth Science Reviews, 98, 201–216.10.1016/j.earscirev.2009.11.003CrossRefGoogle Scholar
Ballard, T.J., Beare, S.P. & Lawless, T.A. (1994) Fundamentals of shale stabilization: Water transport through shales. Society of Petroleum Engineers. Paper (SPE 24974), 129–134.Google Scholar
Bauer, A., Velde, B. & Berger, G. (1998) Kaolinite transformation in high molar KOH solutions. Applied Geochemistry, 13, 619–629.Google Scholar
Bennett, R.H., O’Brien, N.R. & Hulbert, M.H. (1991) Determinants of clay and shale microfabric signatures: processes and mechanisms. Pp. 5–32 in: Microstructure of Fine-Grained Sediments; From Mud to Shale (R.H. Bennett, W.R. Bryant & M.H. Hulbert, editors). Frontiers in Sedimentary Geology, Springer-Verlag, New York.10.1007/978-1-4612-4428-8CrossRefGoogle Scholar
Bol, G.M., Wong, S.W., Davidson, C.J. & Woodland, D.C. (1994) Borehole stability in shales. Society of Petroleum Engineers. Paper SPE 24975, 87–94.Google Scholar
Bostrøm, B., Svanø, G., Horsrud, P. & Skevold, A. (1998) The shrinkage rate of KCl-exposed smectitic North Sea shale stimulated by a diffusion model. Society of Petroleum Engineers. Paper SPE 47254, 273–282.Google Scholar
Capuano, R.M. (1993) Evidence of fluid flow in microfractures in geopressured shales. American Association of Petroleum Geologists, Bulletin, 77, 1303–1314.Google Scholar
Carpacho, C., Ramirez, M., Osorio, J. & Kenny, P. (2004) Replacing potassium with aluminum complex overcomes wellbore instability problems in kaolinitic shales in South America. AADE-04-DF-HO-17, American Association of Drilling Engineers 2004 Drilling Fluids Conference. Houston, Texas, April 6–7, 2004.Google Scholar
Cliffe, S. & Young, S. (2008) Agglomeration and accretion of drill cuttings in water-based fluids. AADE-08-DF-HO-10 AADE Fluids Conference and Exhibition held at the Wyndam Greenspoint Hotel, Houston, Texas, April 8–9, 2008.Google Scholar
Connell-Madore, S. & Katsube, T.J. (2006) Pore size distribution characteristics of Beaufort-Mackenzie Basin shale samples, Northwest Territories. Geological Survey of Canada, Current Research 2006-B1, 1–13.Google Scholar
De Pablo, L., Chávez, M.L. & de Pablo, J.J. (2005) Stability of Na-, K-, and Ca-montmorillonite at high temperatures and pressures: A Monte Carlo simulation. Langmuir, 21, 10874–10884.10.1021/la051334aCrossRefGoogle Scholar
Dewhurst, D.N., Yang, Y. & Aplin, A.C. (1999) Permeability and fluid flow in natural mudstones. Geological Society of London, Special Publication, 158, 23–43.10.1144/GSL.SP.1999.158.01.03CrossRefGoogle Scholar
Diamond, S. (1970) Pore size distribution in clays. Clays and Clay Minerals, 18, 7–23.10.1346/CCMN.1970.0180103CrossRefGoogle Scholar
Díaz-Pérez, A., Cortés-Monroy, I. & Roegiers, J.C. (2007) The role of clay/water interaction in the shale characterization. Journal of Petroleum Science and Engineering, 58, 83–98.10.1016/j.petrol.2006.11.011CrossRefGoogle Scholar
Djéran-Maigre, I., Tessier, D., Grunberger, D., Velde, B. & Vasseur, G. (1998) Evolution of microstructres and of macroscopic properties of some clays during experimental compaction. Marine and Petroleum Geology, 15, 109–128.10.1016/S0264-8172(97)00062-7CrossRefGoogle Scholar
Gale, J.F.W. Reed, R.M. & Holder, J. (2007) Natural fractures of the Barnett Shale and their importance for hydraulic fracture. American Association of Petroleum Geologists Bulletin, 91, 603–622.10.1306/11010606061CrossRefGoogle Scholar
Horsrud, P., Bostrøm, B., Sønstebe, E.F. & Holt, R.M. (1998a) Interaction between shale and water-based drilling fluids: Laboratory exposure tests give new insight into mechanism and field consequences of KCl contents. Society of Petroleum Engineers, Paper SPE 48986, 215–225.Google Scholar
Horsrud, P., Sønstebe, E.F. & Bøe, R. (1998b) Mechanical and petrophysical properties of North Sea shales. International Journal of Rock Mechanics and Mining Sciences, 33, 1009–1020.Google Scholar
Iñigo, A.C., Tessier, D. & Pernes, A. (2000) Use of X-ray transmission diffractometry for the study of clayparticle orientation at different water contents. Clays and Clay Minerals, 48, 682–692.10.1346/CCMN.2000.0480609CrossRefGoogle Scholar
Johnston, C.T. & Tombácz, E. (2002) Surface chemistry of clay minerals. Pp. 38–68 in: Soil Mineralogy with Environmental Applications (J.B. Dixon & G.G. Schultze, editors). Soil Science Society of America Inc., Madison, Wisconsin, USA.Google Scholar
Lanson, B. (1997) Decomposition of experimental X-ray diffraction pattern (profile fitting): a convenient way to study clay minerals. Clays and Clay Minerals, 45, 132–146.10.1346/CCMN.1997.0450202CrossRefGoogle Scholar
Lanson, B. & Besson, G. (1992) Characterization of the end of the smectite-to-illite transformation: decomposition of X-ray patterns. Clays and Clay Minerals, 40, 40–52.10.1346/CCMN.1992.0400106CrossRefGoogle Scholar
MacEwan, D.M.C. & Wilson, M.J. (1980) Interlayer and intercalation complexes of clay minerals. Pp. 197–248 in: Crystal Structures of Clay Minerals and their X-ray Identification. (G.W. Brindley & G. Brown, editors). Monograph No. 5 Mineralogical Society, London.Google Scholar
McHardy, W.J., Wilson, M.J. & Tait, J.M. (1982). Electron microscope and X-ray diffraction studies of filamentous illitic clay from sandstones of the Magnus Field. Clay Minerals, 17, 23–39.Google Scholar
Méring, J. & Oberlin, A. (1971) The smectites. Pp. 231–254 in: The Electron Optical Investigation of Clays (J.A. Gard, editor). Monograph No. 3. Mineralogical Society, London.Google Scholar
Meunier, A. & Velde, B. (2004) Illite: Origins, Evolution and Metamorphism. Springer, Berlin. 286 pp.Google Scholar
Mitchell, J.K. (1993) Fundamentals of Soil Behavior, 2nd edition. Wiley, New York, 577 pp.Google Scholar
Mojid, M.A. & Cho, H. (2006) Estimating the fully developed diffuse double layer thickness from the electrical conductivity in clay. Applied Clay Science, 33, 278–286.10.1016/j.clay.2006.06.002CrossRefGoogle Scholar
Mooney, R.., Keenan, A.C. & Wood, L.A. (1952) Adsorption of water vapour by montmorillonite. II. Effect of exchangeable ions and lattice swelling as measured by X-ray diffraction. Journal of the American Chemical Society, 74, 1371–1374.10.1021/ja01126a002CrossRefGoogle Scholar
Nadeau, P.H., Tait, J.M., McHardy, W.J. & Wilson, M.J. (1984a) Interstratified XRD characteristics of physical mixtures of elementary clay particles. Clay Minerals, 19, 67–76.Google Scholar
Nadeau, P.H., Wilson, M.J., McHardy, W.J. & Tait, J.M. (1984b) Interparticle diffraction: a new concept for interstratified clays. Clay Minerals, 19, 757–769.Google Scholar
Nadeau, P.H., Wilson, M.J., McHardy, W.J. & Tait, J.M. (1985) The conversion of smectite to illite during diagenesis: Evidence from some illitic clays from bentonites and sandstones. Mineralogical Magazine, 49, 393–400.10.1180/minmag.1985.049.352.10CrossRefGoogle Scholar
Newman, A.C.D. (1987) The interaction of water with clay mineral surfaces. Pp. 237–274 in: The Chemistry of Clays and Clay Minerals (A.C.D. Newman, editor). Mineralogical Society, Monograph No. 6. Longman Scientific & Technical.Google Scholar
Norrish, K. (1954) The swelling of montmorillonite. Discussions of the Faraday Society, 18, 120–134.10.1039/df9541800120CrossRefGoogle Scholar
O’Brien, D.E. & Chenevert, M.E. (1973) Stabilizing sensitive shales with inhibited potassium-based drilling fluids. Journal of Petroleum Technology, 255, 1089–1100.Google Scholar
Odriozola, G. & Guevara- Rodríguez, F. de, J. (2004) Namontmorillonite hydrates under basin conditions: Hybrid Monte Carlo and Molecular Dynamics simulations. Langmuir, 20, 2010–2016.10.1021/la035784jCrossRefGoogle Scholar
Rausel-Colom, J.A. & Serratosa, J.M. (1987) Reactions of clays with organic substances. Pp. 371–422 in: Chemistry of Clays and Clay Minerals (A.C.D. Newman, editor). Mineralogical Society, Monograph No. 6. Longman Scientific and Technical.Google Scholar
Reynolds, R.C. (1980) Interstratified clay minerals. Pp. 249–304 in: Crystal Structure of Clay Minerals and their X-Ray Identification (G.W. Brindley & G. Brown, editors). Mineralogical Society, London.Google Scholar
Santarelli, F.J. & Carminati, S. (1995) Do shales swell? A critical review of available evidence. Society of Petroleum Engineers. Paper SPE 29421, 741–756.Google Scholar
Santos, H. & da Fontoura, S.A.B. (1997) Concepts and misconceptions of mud selection. How to minimize borehole stability problems? Society of Petroleum Engineers. Paper SPE 38644, 781–796.Google Scholar
Schlemmer, R., Friedheim, J.E., Growcock, F.B., Bloys, J.B., Headley, J.A. & Polnaszek, S.C. (2003) Chemical osmosis, shale and drilling fluids. Society of Petroleum Engineers. Paper SPE 86912, 318–331.Google Scholar
Shen, Z.Y. (1993) The mineralogy and origin of kaolinrich deposits of eastern China. MSc Thesis, University of Aberdeen, UK.Google Scholar
Sridharan, A. & Satyamurty, P.V. (1996) Potentialdistance relationships of clay-water systems considering the Stern theory. Clays and Clay Minerals, 44, 479–484.10.1346/CCMN.1996.0440405CrossRefGoogle Scholar
Tardy, Y. & Touret, O. (1987) Hydration energies of smectites: A model for glauconite, illite and corrensite formation. Pp. 46–52 in: Proceedings of the Inernational Clay Conference, 1985 (L.G. Schultz, H. Van Olphen & F.A. Mumpton, editors). Clay Minerals Society, Bloomington, Indiana, USA.Google Scholar
Touret, O., Pons, C.H., Tessier, D. & Tardy, Y. (1990) Étude de la repartition de l’eau dans des argiles saturées Mg2+ aux fortes teneurs en eau. Clay Minerals, 25, 217–234.10.1180/claymin.1990.025.2.07CrossRefGoogle Scholar
Van Oort, E. (1997) Physico-chemical stabilisation of shales. Society of Petroleum Engineers. Paper SPE 37263, 523–538 Google Scholar
Van Oort, E. (2003) On the physical and chemical stability of shales. Journal of Petroleum Science and Engineering, 38, 213–235.10.1016/S0920-4105(03)00034-2CrossRefGoogle Scholar
Van Oort, E., Hale, A.H. & Mody, F.K. (1996) Transport in shales and the design of improved water-based shale drilling fluids. SPEDC, APE Annual Technical Conference and Exhibition, New Orleans, 25–28 September 1996.Google Scholar
Vasseur, G., Djeran-Maigre, I., Rousset, G., Tessier, D. & Velde, B. (1995) Evolution of structural and physical parameters of clays during experimental compaction. Marine and Petroleum Geology, 12, 941–954.10.1016/0264-8172(95)98857-2CrossRefGoogle Scholar
Wada, K. (1961) Lattice expansion of kaolin minerals by treatment with potassium acetate. American Mineralogist, 46, 78–91.Google Scholar
Wang, J., Kalinichev, A.G., Kirkpatrick, R.J. & Cygan, R.T. (2005) Structure, energetics and dynamics of water adsorbed on the muscovite (001) surface: a molecular dynamics simulation. The Journal of Physical Chemistry B, 109, 15893–15905.Google ScholarPubMed
Wu, T.-C., Bassett, W.A., Huang W.-L., Guggenheim, S. & Koster van Groos, A.F. (1997) Montmorillonite under high H2O pressures: stability of hydrate phases, rehydration hysteresis and the effect of interlayer cations. American Mineralogist, 82, 69–78.10.2138/am-1997-1-209CrossRefGoogle Scholar