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Ph.D. Sedimentology of Upper Westphalian A sediments in the South Derbyshire Coalfield


1983 -1986 Oxford Polytechnic, Ph.D. Sedimentology of the Upper Westphalian A in the South Derbyshire Coalfield.

1986 -1988 Shell-sponsored post-doctoral research fellowships at Keele & Liverpool Universities studying external geometry and architecture of Carboniferous sediment bodies.

Work Experience:
1988 -1992 Shell International Research (KSEPL)
Research sedimentologist working on development of geometrical database and architectural modeling rules for Shell’s 3-D modelling package GEOCAP. 3-D models of several Nigerian fields (Cawthorne Channel, Soku)

1992 – 1996 Shell Petroleum Devt. Co. of Nigeria Ltd. – Warri
Section head of reservoir geology in PE studies team. Quality control of geological input to well planning, Field Reviews, Field Development Plans and Ultimate Recovery Change Reports provided through 3-D reservoir modelling studies.

1996 – 1997 Shell Int. E & P, (New Business Development)
Member of non-traditional hydrocarbon exploration and development team. New business development technology strategy advisor for geology.

1997 – present Reservoir Geology Consultants Limited
Co-Director and Principal 3-D reservoir geological modelling consultant. 24 major reservoir modeling studies completed in fluvial/deltaic reservoir complexes including Nigeria, North Sea – Brent Group, Oman, West Siberia, Australia, Peru, and GoM. Present ongoing modelling work research is focused on Carboniferous rocks in the South Wales Coalfield and palaeovalley geometries in the Cretaceous Book Cliffs, Utah


Fulton, I.M. & Williams, H. 1988. Silesian sedimentation in the south Pennine Basin. In: Besly, B. & Kelling, G. (eds.) Sedimentaton in a synorogenic basin complex; the Pennine Basin, 146-158, Blackie.

Williams, H. & Flint, S.S. 1989. Anatomy of a channel-bank collapse structure in Tertiary fluvio-lacustrine sediments of the Lower Rhine Basin, West Germany. Geological Magazine, 27, 97-103.

Herweijer, J.C., Hocker, C.F.W., Williams, H. & Eastwood, K.M. 1989. The relevance of dip profiles from outcrops as reference for the interpretation of SHDT dips. In: Hurst, A (ed) Geological Interpretation of Wireline Logs (1). Geol. Soc. London Spec. Pub., 186-191.

Le Varlet, X.Y.A., Verbeek, P.J.F., Ahmed, J.O., Chang, F., Stulemeijer, I.P.J.M. & Williams, H. 1991. From 3-D seismic to volumetric estimates using a quantitative reservoir model. Society of Petroleum Engineers paper., Lagos, 1991. 33-44.

H.Williams & H.F. Soek. 1993. Predicting reservoir sandbody orientation from dipmeter data: the use of sedimentary dip profiles from outcrop studies. Spec. Publs int Ass. Sediment, 15, 143-156.

H. Williams & G.A. Ugueto. 1994. Synsedimentary growth fault modelling in the Niger Delta. Abstracts of the Annual meeting of the Am. Assoc. Petrol Geol., Denver, June 1994.

H. Williams, C. Berge, M. Hartung, R. de Ruiter & G.A. Ugueto. 1997. Prediction of Nigerian reservoir sands through integration of seismic imaging and sequence stratigraphy. In: Shanley, K.W & Perkins, B.F. (eds.) Shallow marine and non-marine reservoirs: sequence stratigraphy, reservoir architecture and production characteristics. Gulf Coast Society of Economic Paleontologists and Mineralogists, 18th Annual Reserach Conference, Houston, 1997.

Davies, P. & Williams, H. (2003). Impact of Outcrop Analogue Guided Modelling, Brent Group Succession, Brent Field, U.K. North Sea: A ‘Reorientated’ Delta System. American Association of Petroleum Geologists. Abstract. AAPG Annual Conference, Salt Lake City, May 2003.

Davies, P & Williams, H. 2005. The impact of realistic reservoir modelling. The Geological Scoiety of London, Petroleum Group Meeting. Abstract. p. 37

Pattison, S.A.J., Williams, H., and Davies, P., 2007a. To clinoform or not to clinoform? That is a key question for correlating in shoreface-to-shelf systems: Geological Society of America (GSA) Annual Meeting, October 28 to 31, Denver, Colorado, GSA Abstracts with Programs, v. 39, no. 6, p. 337.

Pattison, S.A.J., Williams, H. & Davies, P. 2007b. New insights for correlation in shoreface-to-shelf systems based on observations in the Campanian Blackhawk Formation to Castlegate Sandstone stratigraphic interval, Book Cliffs, Utah. American Association of Petroleum Geologists Annual Convention, Long Beach California, Abstract p.107.

Pattison, S.A.J., Williams, H. & Davies, P. 2008. Clastic sedimentology, sedimentary architecture, and sequence stratigraphy of fluvio-deltaic, shoreface, and shelf deposits, Upper Cretaceous,Book Cliffs, eastern Utah and western Colorado. In Reynolds, R.G. (ed) Roaming the Rocky Mountains: Geological Field Trips, Field guide 10. Geological Society of America. 17-44.

Davies, P., Williams, H. & Pattison, S.A.J. 2008. Capturing credible reservoir architecture in 3-D sub-surface models: a comparison of some geostatistical versus deterministic approaches. American Association of Petroleum Geologists Annual Convention, San Antonio, Texas, Abstract p.354.

Davies, P., Williams, H., Pattison, S.A.J. & Moscariello, A. 2009. Incorporating realistic reservoir architectural uncertainty in 3-D sub-surface models: the use of outcrop analogue models to optimize workflows. European Association of Geoscientists and Engineers June 2009. Abstract & poster.

Davies, P., Williams, H., Pattison, S.A.J. & Moscariello, A. 2011. The importance of re-creating realistic reservoir architecture in 3-D sub-surface models: lessons from outcrop studies. European Association of Geoscientists and Engineers May 2011. Abstract & talk.

Davies, P & Williams, H. 2012 Sand body architecture and geometry in the Middle Pennsylvanian Pikeville Formation, East Kentucky, USA. Extramural report for TNO: Carboniferous Reservoirs Project.


Director: Reservoir Geology Consultants Limited

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