Subsurface Team
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Scott Bruner
Scott is a petroleum engineering leader who is strategically focused with strong well intervention, completion design and execution skills along with significant experience delivering onshore and offshore production engineering surveillance.
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George Zabaras
George Zabaras has over 37 years of Oil & Gas Upstream experience in various technical roles supporting Major Capital Projects with technical skills that include deep expertise in flow assurance, multiphase flow and fundamental knowledge of all aspects of Petroleum Engineering from Reservoir to...
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Gordon Shahin
Gordon is an implementation-focused, creative engineer with deep experience in ORP, Well Surveillance, Reservoir Engineering/Modeling, and Enhanced Oil Recovery Processes.
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Li Fan
Li is an experienced engineering advisor with a demonstrated history of working in the oil & energy industry. Skilled in Petroleum, Gas, Petroleum Geology, Petrophysics, and Reservoir Simulation. Strong operations professional with a Doctor of Philosophy (Ph.D.) focused in Petroleum Engineering...
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Jefferey G. Southwick
Jeff recently retired from Shell with 40 years’ experience where he worked in both Downstream and Upstream research with a focus was on Chemical Flooding,
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George Coltrin
George has worked for several large oil companies over a period of 35 years. His overall experience includes a variety of technical and management roles on projects ranging from exploration through the production and abandonment phases of the oilfield lifecycle.
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John Farrelly
John has 35 years of experience in geoscience and project management with a background in exploration, appraisal, and development in basins worldwide.
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Mark Durkee
Mark Durkee has over 40 years of managerial and technical experience in conventional and unconventional exploration and exploitation.
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Lumay Viloria
Lumay has over 30 years of leadership and technical experience in Hydrocarbon Exploration & Field Development. She is a full life cycle project manager well versed in upstream asset management, training and development of petro-technical staff, and reserves planning and reporting.
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Allen Bertagne
Allen, is a hands-on explorationist with more than 35 years’ experience, gained while working in numerous basins around the world.
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Elizabeth Watkins
Elizabeth has over 20 years of broad international and domestic experience as an O&G field developer and is also a Petrel expert.
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Mchuks Pauly Enwere
Dr. Enwere earned both his first and doctorate degrees in petroleum engineering. He has over 25 years of worldwide oil and gas experience, with 20 years of his work focused in the discipline of Petrophysics, and the last 10 years focused exclusively on tight sands and unconventional shale plays...
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Eugene Murray
Gene Murray is a successful geoscience professional with broad based experience in numerous international basins for over 40 years. His geoscience experience spans from exploration oriented through the appraisal stage of projects, as well as an operations geologist coordinating geological...
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Stadis Stan Patniyot
Stan Patniyot is a business-oriented petroleum geoscientist and expert petrophysicist who has worked in the upstream sector of the oil and gas industry for more than 35 years. He has worked for major oil companies, national oil companies and service companies as a technical manager and...
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Thomas Cool, Ph.D.
Thomas Cool has more than 37 years focus as Geoscientist on Oil and Gas Exploration and Production Projects. Delivered and executed Field Development Plans for various properties. Identified, promoted, and executed successful Field Development wells and Exploration wells. As result, achieved...
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Dr. P. Sundararaman
Dr. P. Sundararman has over 30 years of experience in the oil and gas industry as a geochemist and as a petrophysicist. He worked for 28 years with the international energy company, Chevron, and continues to consult with them and other national oil companies such as KOC and Pemex on projects in...
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D. Ronald (Ron) Harrell
Ron Harrell is a Petroleum Engineering graduate of Louisiana Tech University and continues as Chairman Emeritus of Ryder Scott Company, Petroleum Consultants. He retired as Chairman in May 2006. Ron remains active in the industry as a licensed engineer in three states and serves on several...
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Richard Thompson
Richard Thompson has over 30 years’ experience in both onshore and offshore management positions. These roles included a significant amount of experience in reservoir engineering which included reserve determination and evaluation for heavy oil fields in Alberta, miscible gas flooding in...