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Peter Lucas
B.Sc. (Hons)
Sedimentology – Department Manager

Peter joined PetroStrat in June 2014 to head up and manage the new Sedimentology Department. He has 34 years’ experience in petroleum industry consulting, with extensive experience in all aspects of clastic and carbonate sedimentology, fracture interpretation and petrographic/diagenetic analysis. He is a specialist in detailed core description, including as a means of characterising wireline log and image log signatures to additionally enable detailed interpretation of uncored intervals; something he has been doing for over 25 years, including in horizontal/highly deviated wells. He is very familiar with the integration of all drilling, log, mud-log, core and image log information in the detailed evaluation of reservoir sections, often in cooperation with client companies. In his projects integrated detailed fracture description of cores and image logs have allowed systematic semi-quantification of fracture porosity; allowed understanding of regional stresses, breakout patterns and the identification and characterisation of faults and their influence on adjacent bedding. He has worked closely with biostratigraphers and seismic interpreters on various projects to create detailed sequence stratigraphic correlations and reservoir zonations and used his sedimentological expertise to comment on reasons for the discontinuity of sand-bodies etc. He has extensive experience in detailed petrographic description and interpretation of clastics, carbonates and basement/igneous lithologies and associated diagenetic interpretation and porosity history modelling/prediction based on core, SWC or ditch cuttings samples, plus environmental interpretation integrated with log data. He has presented papers on image log interpretation and gamma ray log evaluation as a tool to aid correlation and facies interpretation and has led field trips including a recent one related to the UK Bowland Shale. He has given training courses in sedimentology and image log interpretation to the industry.

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Gareth Smith
MSci
Sedimentologist

Gareth Smith joined the PetroStrat sedimentology/reservoir geology department in October 2015. He brought with him 10 years of experience in petroleum industry consulting. He has significant experience in all aspects of clastic and carbonate sedimentology, fracture interpretation, reservoir quality analysis and field mapping. He is a specialist in detailed core description and image log analysis within the full range of depositional systems, including the integration of all drilling, log, mud-log, core and image log information. Gareth’s regional experience includes; UK, Norway, Kuwait, Abu Dhabi, Pakistan, Algeria, Cameroon, Libya, Kurdistan, Iraq, Qatar, Angola, North America and Vietnam. As well as detailed sedimentological interpretation across cored and non-cored sections using image log signatures, Gareth also integrates detailed fracture, breakout and flat bedding relationships in order to understand the regional stresses (historic and current day) imposed upon a field. Gareth has devoted much time in developing a transparent and understandable image log analysis workflow spanning the data QC to the final interpretative and reporting stages. He has experience in detailed petrographic description and interpretation of clastic and carbonate lithologies and associated diagenetic interpretation and porosity history modelling/prediction based on core, SWC or ditch cuttings samples, plus environmental interpretation integrated with log data.

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Brenda Owen
B.A.
Lithostratigrapher

Brenda has 30 years’ petroleum industry experience, specialising in lithostratigraphy and petroleum data management. As a stratigrapher, she has contributed to and project-managed several studies, gaining many years’ experience of the West African Margin, notably high-resolution lithostratigraphic and biostratigraphic well to basin-scale analyses of Angola, Equatorial Guinea, Gabon and Ghana. Brenda has worked on lithological analyses and stratigraphic interpretations from many other regions, including the North Sea, South America, Middle East and North Africa. She has also participated in multi-disciplinary studies, including research of proven and potential source rocks of the Circum-Indian Ocean and Circum-Mediterranean regions. Since joining PetroStrat in 2011, Brenda has project managed a detailed correlation study of Cretaceous sand packages within part of the North Sea (Norwegian sector), involving the integration of multidisciplinary biostratigraphic and lithological data. She has also been involved in a vintage data correlation study of wells from Suriname, and in stratigraphic studies of wells from Gabon and Ghana. Brenda continues to provide lithological analyses of samples, and has recently been involved in the description and photography of cuttings samples from many Iraq wells and in field-scale lithofacies assignment of cuttings samples from a Jurassic reservoir of the North Sea. Brenda also worked for five years in petroleum data management, during which time she worked on a major well document archiving project and a variety of database products, including organic geochemistry, produced oils, checkshot data, and other well information. Brenda was also initially responsible for the first-stage design of the company’s project information management system (PIMS), researching and establishing a data model for ongoing database development.

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John Gregory
B.Sc. M.Sc. Ph.D FGS
Thin-section Micropalaeontology and carbonate microfacies/sedimentology

John has 24 years’ direct experience in petroleum industry consulting. He completed a Ph.D. on Scottish Jurassic foraminifera and radiolaria (Hull, 1992). Has diverse experience, having worked on Palaeozoic, Mesozoic and Cenozoic sections in disparate regions including the North Sea, West of Shetland, Irish Sea, Canada, Greenland, USA, Gulf of Mexico, Russia, South China Seas (China, Vietnam, Thailand), circum-Mediterranean, circum-Black Sea, Caspian, Middle East, North, West & South Africa and Caribbean. His primary expertise is Jurassic to Cenozoic micropalaeontology, including siliceous microfossils (radiolaria, diatoms & silicoflagellates). Has provided wellsite services worldwide, with extensive experience throughout the North Sea (Danish, Dutch, Norwegian & UK sectors), Italy, Libya, Sierra Leone, Ghana, Ivory Coast, Morocco, Gulf of Mexico, Trinidad and the South China Seas. Wellsite assignments include ‘biosteering’ of >100 horizontal development wells, casing picks (HP/HT & H2S settings) and numerous long duration overseas wild-cat wells. John’s directorial duties within PetroStrat include Marketing and Technical matters. John remains active in academic circles and is President of TMS and was Chief Editor of the Journal of Micropalaeontology (6 years) and has served on several committees of the Geological Society including the Stratigraphy Commission. He is Honorary lecturer at the University of Birmingham (MSc course), a Scientific Associate at the Natural History Museum, London and co-supervises a number of MSc and PhD students.

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Janine Pendleton
B.Sc. Ph.D. FLS
Palynology and Sedimentology

Janine joined PetroStrat in September 2012, after submitting her Ph.D. in Carboniferous palynology and palaeobotany at the University of Sheffield, U.K. (part funded by the National Museum Wales, Cardiff). Her multi-disciplinary Ph.D. focussed on the neglected Bristol Coalfield of south-west Britain, incorporating both traditional biostratigraphic dating, as well as more novel in-depth studies of sedimentological facies and their effect on vegetational palaeoecology. She is actively involved in on-going work to expand and refine Carboniferous biozonation schemes of Western Europe, specialising in the Namurian-aged Bowland Shale Formation. Large parts of her Ph.D. have already been published in a series of papers, with plans to publish the concluding part soon. She has since extended her commercial knowledge to encompass the rest of the Palaeozoic of the Euramerica palaeocontinent, and is gaining experience with the disparate palynological assemblages from Gondwana (Middle East, South America). She has completed over ten offshore deployments in the North Sea, both Central and Southern North Sea, as well as onshore Eastern Europe.

Sedimentology/Reservoir Geology

Peter Lucas
B.Sc. (Hons)
Sedimentology – Department Manager
Gareth Smith
MSci
Sedimentologist
Brenda Owen
B.A.
Lithostratigrapher
John Gregory
B.Sc. M.Sc. Ph.D FGS
Thin-section Micropalaeontology and carbonate microfacies/sedimentology
Janine Pendleton
B.Sc. Ph.D. FLS
Palynology and Sedimentology
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