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Variation in kaolinite morphology with growth temperature in isotopically mixed pore-fluids, Brent Group, UK North Sea

Published online by Cambridge University Press:  09 July 2018

M. Osborne ,
R. S. Haszeldine  and
A. E. Fallick
M. Osborne
Affiliation:
Department of Geology & Applied Geology, Glasgow University, Glasgow G12 8QQ, UK
R. S. Haszeldine
Affiliation:
Department of Geology & Applied Geology, Glasgow University, Glasgow G12 8QQ, UK
A. E. Fallick
Affiliation:
Isotope Geosciences Unit, SURRC, East Kilbride, Glusgow, G75 OQU, UK
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Abstract

Diagenetic kaolinite in reservoir sandstones of the Brent Group precipitated following the dissolution of detrial feldspar. Two distinct morphologies of kaolinite occur: (1) early diagenetic vermiform kaolinite which is often associated with expanded detrital micas; (2) later diagenetic ‘blocky’ kaolinite. Combined hydrogen and oxygen isotopic studies suggest that vermiform kaolinite precipitated at 25–50°C, and blocky kaolinite at 50–80°C, from pore-waters of a similar isotopic composition (δ18O = −6.5 to −3.5‰). These pore-waters are interpreted to be either a mixture of meteoric and compactional waters, or alternatively a meteoric water that had evolved isotopically due to water-rock interaction. Kaolinite precipitation occurred predominantly during the late Cretaceous to early Eocene. Influx of meteoric water into the Brent Group, probably occurred during the Palaeocene. Fluid flow across the entire basin was driven by a hydrostatic head on the East Shetland Platform palaeo-landmass to the west. The development of the two kaolinite morphologies is possibly related to the degree of supersaturation at the time of precipitation. At low degrees of supersaturation, vermiform kaolinite precipitated slowly upon detrital mica surfaces. Blocky kaolinite precipitated more rapidly into open pore-space at higher degrees of supersaturation. Precipitation of blocky kaolinite was perhaps triggered by the decay of oxalate.

Type
Research Article
Information
Clay Minerals , Volume 29 , Issue 4 , October 1994 , pp. 591 - 608
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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References

Baldwin, B. & Butler, C.O. (1985) Compaction curves. Am. Assoc. Petrol. Geol. Bull. 69, 622–26.\Google Scholar
Berner, R.A. (1971) Principles of Chemical Sedimentology, McGraw Hill, New York.Google Scholar
Berner, R.A. (1981) Kinetics of weathering and diagenesis. In: Kinetics of Geochemical Processes, Reviews in Mineralogy 8, Min. Soc. of America, Washington, DC.CrossRefGoogle Scholar
Bird, M.I. & Chivas, A.R. (1988) Stable isotope evidence for low temperature kaolinitic weathering and postformational hydrogen isotope exchange in Permian kaolinites. Chem. Geol. 72, 249–265.Google Scholar
Bjorkum, P.A., Mjos, R., WALDERHAUG 0 . & Hurst, A. (1990) The role of the late Cimmerian unconformity for the distribution of kaolinite in the Gullfaks field, northern North Sea. Sedimentology, 37, 395–406.Google Scholar
Bjørlykke, K. & Aagaard, P. (1992) Clay minerals in North Sea sandstones. Pp. 65-80 in: Origin, Diagenesis and Petrophysics of Clay Minerals in Sandstones, SEPM Spec. Publ. 47.Google Scholar
Bjørlykke, K. & Brendsal, A. (1986) Diagenesis of the Brent sandstone in the Statfjord field. Pp. 157-168 in: Roles of Organic Matter in Sedimentary Diagenesis, (Gaultier, D.L., editor). SEPM Special Publication 38.Google Scholar
Bjørlykke, K., Nedkvitne, T., Ramm, M. & Saigal, G.C. (1992) Diagenetic processes in the Brent Group (Middle JurassicI reservoirs of the North Sea; an overview. Pp. 263-288 in: Geology of the Brent Group, (Horton, A.C., Haszeldine, R.S., Giles, M.R. & Brown, S., editors). Geological Society, Bath, UK.Google Scholar
Brint, J.F. (1989) Isotope diagenesis and palaeofluid movement: Middle, Jurassic Brent sandstones, North Sea. D. Phil. thesis, Univ. Strathclyde, Scotland.Google Scholar
Craig, H. (1961) Isotopic variations in meteoric waters. Science, 133, 1702–1703.Google Scholar
Crowley, S.F. (1991) Diagenetic modification of detrital muscovite: an example from the great limestone cyclothem (Carboniferous) of Co. Durham, UK. Clay Miner. 26, 91–103.Google Scholar
Curtis, C.D. (1983) Link between aluminium mobility and the destruction of secondary porosity. Bull. Am. Assoc. Petrol. Geol. 67, 380–393.Google Scholar
Dimitrakopoulos, R. & Muehlenbachs, K. (1987) Biodegradation of petroleum as a source of 13C enriched carbon dioxide in the formation of carbonate cement. Chem. Geol. 65, 283–291.Google Scholar
Ehrenberg, S.N. (1991) Kaolinized, potassium-leached zones at the contacts of the Garn Formation, Haltenbanken, mid-Norwegian continental shelf. Mar. Petrol. Geol., 8, 250–269.Google Scholar
Emery, D., Myers, K.J. & Young, R. (1990) Ancient subaerial exposure and freshwater leaching in sandstones. Geology, 18, 1178–1181.2.3.CO;2>CrossRefGoogle Scholar
Fallick, A.E., Macaulay, C.I. & Haszeldine, R.S. (1993) Implications of linearly correlated oxygen and hydrogen isotopic compositions for kaolinite and illite in the Magnus sandstone, North Sea. Clays Clay Miner. 41, 184–190.CrossRefGoogle Scholar
Giles, M.R. & Deboer, R.B. (1990) Origin & significance of redistributional secondary porosity. Mar. Petrol. Geol. 7, 378–397.Google Scholar
Giles, M.R., Stevenson, S., Martin, S.V., Cannon, S.J.C., Hamilton, P.J., Marshall, J.D. & Samways, G.M. (1992) The reservoir properties and diagenesis of the Brent Group; a regional perspective. Pp. 289-327 in: Geology of the Brent Group, (Morton, A.C., Haszeldine, R.S., Giles, M.R. & S. Brown editors) Geological Society, Bath, UK.Google Scholar
Geasmann, J.R. (1992) The fate of feldspar in the Brent Group reservoirs, North Sea: a regional synthesis of diagenesis in shallow, intermediate, and deep burial environments. Pp. 329-350 in: Geology of the Brent Group, (Morton, A.C., Haszeldine, R.S., Giles, M.R. & Brown, S., editors). Geological Society, Bath, UK.Google Scholar
Glasmann, J.R., Lundegard, P.D., Clark, R.A., Penny, B. K. & Collins, I.D. (1989) Geochemical evidence for the history of diagenesis and fluid migration: Brent sandstone, Heather field, North Sea. Clay Miner. 24, 255–284.CrossRefGoogle Scholar
Geennie, K.W. (1990) Introduction to the Petroleum Geology of the North Sea (third edition). Oxford, Blackwell Scientific Publications.Google Scholar
Habermehl, M.A. (1980) The Great Artesian Basin, Australia, BMR. J. Aust. Geol. Geophys. 5, 9–38.Google Scholar
Hamilton, P.J., Fallick, A.E., MACLNTYRER.M. & Eelioyr, S. (1987) Isotopic tracing of provenance and diagenesis of lower Brent Group sands, North Sea. Pp. 939-949 in: Petroleum Geology of NW Europe, (Brooks, J. & Glennie, K.W. editors). Graham & Trotman, London.Google Scholar
Harris, N.B. (1992) Burial diagenesis of Brent sandstones: a study of Staffjord, Hutton and Lyell fields. Pp. 351-375 in: Geology of the Brent Group, (Morton, A.C., Haszeldine, R.S., Giles, M.R. & Brown, S., editors). Geological Society, Bath, UK.Google Scholar
Haszeldine, R.S., Brint, J.F., Fallick, A.E., Hamilton, P.J. & Brown, S. (1992) Open and restricted hydrologies in Brent Group diagenesis: North Sea. Pp. 401-419 in: Geology of the Brent Group, (Morton, A.C., Haszeldine, R.S., Giles, M.R. & Brown, S., editors). Geological Society, Bath, UK.Google Scholar
Helgeson, H.C. & Murphy, W.M. (1983) Calculations of mass transfer among minerals and aqueous solutions as flmctions of time and surface are in geochemical processes. 1. computational approach. Math. Geol. 15, 109–131.Google Scholar
Hogg, A.J.C. (1989) Petrographic and isotopic constraints on the diagenesis and reservoir properties of the Brent Group sandstones, Alwyn South, Northern UK North Sea. PhD thesis, Univ. Aberdeen, Scotland.Google Scholar
Hurst, A. & Irwin, H. (1982) Geologic modelling of clay minerals in sandstones. Clay Miner. 17, 5–22.Google Scholar
Kantorowicz, J.D. (1990) The influence of variations in illite morphology on the permeability of Brent Group sandstones, Cormorant field, UK North Sea. Mar. Petrol. Geol. 7, 66–74.Google Scholar
Lamuert, S.1. & Epstein, S. (1980) Stable investigations of an active geothermal system in Valles Caldera, Jemez Mountains, New Mexico. J. Volcan. Geotherm. Res. 8, 111–129.Google Scholar
Larter, S. & Horstad, I. (1992) Migration of petroleum into Brent Group reservoirs: some observations from the Gullfaks field, Tampen Spur area North Sea. Pp. 441-52 in: Geology of the Brent Group, (Morton, A.C., Haszeldine, R.S., Giles, M.R. & Brown, S., editors). Geological Society, Bath, UK.Google Scholar
Longstaffe, F.J. & Ayalon, A. (1990) Hydrogen-isotope geochemistry of diagenetic clay minerals from Cretaceous sandstones, Alberta, Canada: evidence for exchange. Appl. Geochem. 5, 657–668.CrossRefGoogle Scholar
Manheim, F.T. (1967) Evidence for submarine discharge of water on the Atlantic continental slope of the southern United States. Trans. New York Acad. Sci., 11, 839-435.Google Scholar
Mullis, A.M. & Haszeldine, R.S. (1994) Numerical modelling of diagenetic hydrogeology at a graden edge: Brent Group oilfields, North Sea.J. Geol. Soc. (in press).CrossRefGoogle Scholar
Nadeau, P.H. & Hurst, A. (1992) Applications of back scattered electron microscopy to the quantification of clay mineral microporosity. J. Sed. Pet. 61, 921–925.Google Scholar
O'Neil, J.R. & Kharaka, Y.K. (1976) Hydrogen and oxygen isotopic exchange reactions between clay minerals and water. Geochim. Cosmochim. Acta, 40, 241–246.CrossRefGoogle Scholar
Richards, P.C. (1992) An introduction to the Brent Group, a literature review. Pp. 15-26 in: Geology of the Brent Group, (Morton, A.C., Haszeldine, R.S., Giles, M.R. & Brown, S., editors). Geological Society, Bath, UK.Google Scholar
Savin, S.M. & Lee, M. (1988) Isotopic studies of phyllosilicates. Pp. 188-223 in: Hydrous Phyllosilicates (Exclusive of Micas). Reviews in Mineralogy, 16, Mineralogical Society of America, Washington, DC.Google Scholar
Shanmugan, G. (1990) Porosity prediction using erosional unconformities. Pp. 1-23 in: Prediction of reservoir quality using chemical modelling. (Meshri, I.D. & Ortoleva, P.J., editors). AAPG memoir 49.Google Scholar
Sheppard, S.M.F. (1986) Characterization and isotopic variations in natural waters. Pp. 165-183 in: Stable Isotopes in High Temperature Geological Processes, (Valley, J.W. et al., editors). Reviews in Mineralogy, 16, Mineralogical Society of America, Washington, DC.Google Scholar
Surdam, R.C., Boese, S.W. & Crossly, L.J. (1984) The chemistry of secondary porosity, Pp. 127-151 in: Clastic Diagenesis, (McDonald, D. & Surdam, R., editors). AAPG Memoir, 37.Google Scholar
Small, J.S. (1993) Experimental determination of rates of precipitation of authigenic kaolinite and illite. Clays Clay Miner. 41, 191–208.CrossRefGoogle Scholar
Small, J.S., Hamilton, D.L. & Haresch, S. (1992) Experimental simulation of clay precipitation within reservoir sandstones. J. Sed. Pet., 62, 508–529.Google Scholar
Wheatley, T.J., Biggins, J., Buckingham, J. & Holloway, N.H. (1987) The geology and exploration of the transitional shelf, an area to the west of the Viking Graben. Pp. 979-989 in: Petroleum Geology of NW Europe, (Brooks, J. & Glennie, K.W., editors). Graham & Trotman, London.Google Scholar
White, & McKenzie, (1989) Magmatism at rift zones: the generation of volcanic margins and flood basalts. J. Geophys. Res. 94, 7685–7729.Google Scholar
Yielding, G., Badley, M.E. & Roberts, A.M. (1992) The structural evolution of the Brent Province. Pp. 27-43 in: Geology of the Brent Group, (Morton, A.C., Haszeldine, R.S., Giles, M.R. & Brown, S., editors). Geological Society, Bath, UK.Google Scholar