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EVENING TALK: Geophysical Technologies for Unconventional Reservoir Develop...

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Imperial College - Royal School of Mines

Prince Consort Rd

Kensington

London

SW7 2BP

United Kingdom

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About the Speaker

Dr Rodney Johnston is currently R&D Program Manager in BP’s Subsurface Technical Centre. He is responsible for a portfolio of geophysics R&D from data acquisition, through imaging and inversion. Prior to his current role in Technology, Rodney spent several years working Unconventional Reservoirs in the Onshore US and Canada, combining surface seismic, borehole data, microseismic monitoring, and trialling new technology. Classically educated in whole earth geophysics at the University of Edinburgh, he trained to be a professional geophysicist at the French Petroleum Institute with an Engineering Degree from the Ecole Nationale Superieure du Petrole et des Moteurs. He spent 8 years as academic staff at the University of Edinburgh delivering diverse government- and industry-funded research projects including marine seismic source control, well ties, attenuation, free-surface multiple suppression, multi-component seismic and CSEM. He joined BP in 2001 working for 8 years in their E&P Technology Group in London on BP’s early deployment of multi-component and wide-azimuth seismic as a development tool both offshore and onshore, from the Caribbean and South America to the Caspian Sea, Middle East and Far East, North Sea and North Africa. Trans-Atlantic research projects he has led include Passive Seismic for reservoir surveillance, Elastic Imaging, and Reservoir Characterisation with Full-wavefield attributes. Rodney received the SEG’s (Society of Exploration Geophysicists) Best Paper Award in The Leading Edge (2005), and PESGB’s (Petroleum Exploration Society of Great Britain) Best Paper Award at PETEX (1998). An active member of EAGE and SEG, he helps organise workshops, review papers and chair sessions. He coordinates the SEG’s Distinguished Lecturer and Honorary Lecturer tours at BP Sunbury.

The abstract

Unconventional reservoirs have revolutionized the global resource supply picture and represent significant opportunities for countries around the world. Whether rock matrix or fluid properties deviate from what we may consider conventional, success in this environment requires a close integration between both subsurface characterisation and efficient engineering practices.

Among the disciplines involved, geophysics plays a role in describing the sub-surface and where to develop: rock type, fluids and fractures through seismic-derived attributes. The ability to convert amplitudes from seismic into a desired rock property attribute isolated from other properties depends on: 1) the rocks and fluids under investigation, 2) acquiring and processing high quality seismic indicative of the reflection process deep underground, and 3) the particular model used for wave propagation and reflections in the earth. Microseismic, as a technique which monitors changes in stress, provides a guide to how the reservoir responds dynamically to stimulation and production. Based on the same wave propagation in the earth, the two techniques are linked and complementary. Due to the heterogeneity associated with unconventional reservoirs and the depositional environments which control them, data acquisition choices are key to unlocking detailed and robust information about the rocks and fluids through processing and analysis.

Factors important for the long-term technology vision required for unconventional reservoir development include both solutions in the market right now and forward-looking industry thinking: equipment that’s being developed and its ability to operate in different land environments. Efficient and cost-effective dense sampling of sources and receivers is a necessary goal. Dense spatial sampling stabilizes the higher-order attributes we need, and a more complete description of the elastic earth provides complementary information using P- and S-waves acquired with multi-component sensors. While BP and the industry are working on improving the efficiency side, we need to continue to think of novel ways to produce the right equipment in large quantities such that adequate source and receiver wavefield sampling becomes practical.



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Date and Time

Location

Imperial College - Royal School of Mines

Prince Consort Rd

Kensington

London

SW7 2BP

United Kingdom

View Map

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