Choose Language

Contact Us

expertise icon Contact An Expert



John Carlson P.Eng.

Director, Sproule Training

John is the Director of Sproule Training. John coordinates the development of course programs and schedules. He has extensive experience in the oil and gas industry as an engineer and has applied his knowledge base to growing Sproule’s curriculum and assisting in the development of new courses that are of value to those in the oil and gas industry.

Hayley Silberg P.Geo., E.I.T.

Geoscientist and Manager, Sproule Training

Hayley has been a Petroleum Geoscientist with Sproule's Reservoir Characterization Practice Area since 2011. She performs 3D reservoir geomodelling, geostatistical analysis, uncertainty modelling, seismic interpretation, seismic attribute mapping, and reserves evaluation. Additionally, Hayley is the Manager of Sproule Training, responsible for teaching, marketing, developing and coordinating Sproule’s industry courses. She has technical experience in Western Canada, Ontario, offshore Eastern Canada, the United States, the North Sea, Africa, Oman, New Zealand, Colombia and Madagascar.

Cameron Six P.Eng.


As CEO, Cameron’s role is to provide the leadership and management required to assure business success and sustainable growth in line with the strategic plan defined by the Board. His 15-year tenure at Sproule includes reserve and contingent resource evaluations, acquisitions, divestitures, security commission reports, reserve audits, and international property evaluations. Cam has provided expert witness testimony across the globe as well as support to legal teams for litigation purposes. Cam has also held various technical and management positions with Mobil Oil Canada and ExxonMobil Canada.

Matthew O’Blenes P.Eng.

Senior Petroleum Engineer

Matthew O’Blenes has been a Sproule professional since 1997. Matthew lectures to industry through Sproule’s in-house course, Evaluation of Canadian Oil and Gas Properties. He has experience in Australia and Canada. Matthew’s career has focused on natural gas, encompassing the areas of reserves, production, storage, transmission and distribution. His experience includes both operational and planning points of view, with an emphasis on economics and system performance.

Miles Hughes P.Eng.

Senior Petroleum Engineer and Manager, Strategic Advisory

Miles Hughes has been a Sproule professional since 2014. He has experience in exploitation and production engineering at a large Canadian multinational. Miles has also spent time as a corporate planning analyst, a new ventures and special projects engineer, and reserves manager at a number of junior producers, and he has experience in Canada and the United States. While at Sproule, Miles’ experience has been in the area of Canadian reserves evaluations and audits. He is also an instructor at the University of Calgary and teaches Sproule’s in-house course, Evaluation of Canadian Oil and Gas Properties.

Keith Carr C.E.T.

Independent Training Consultant

Keith has spent three decades in the oil and gas industry and has been sharing his knowledge and enthusiasm with students for several years. His experience spans many of the technical disciplines, including drilling, completion, production engineering, and facilities in both conventional and unconventional resources. During his years in the industry he has prepared many reserves evaluations for large and small companies and has been involved in a number of corporate evaluations.

Nora Stewart P.Eng.

Senior Vice President, Reserves Certification

With over 40 years of experience in the oil and gas industry, Nora brings seventeen years of experience in certification of oil and gas assets to standards required by securities exchanges (SPE-PRMS, National Instrument 51-101 (Alberta Securities Commission), SEC) including advisory on mergers, acquisitions and dispositions. 

Rob Dargewitcz HBA, MBA, CMA

Managing Director, Dargewitcz Consulting Corp

Rob has over 20 years of experience in various finance-related roles in both the public and private sectors. Rob is currently the Treasurer of the North West Redwater Partnership, a Calgary-based entity currently constructing a new $8.5 billion upgrader and refinery near Edmonton, which will go into operation in late 2017. Rob is also the Founder and Managing Director of Dargewitcz Consulting Corp (DC Corp), a financial services and consulting business committed to helping companies grow and meet their financial needs through corporate advisory, consulting and financial services, including strategic economic and financial modelling.

Barry Hanson P. Eng.

Senior Petroleum Engineer

Barry has been teaching with Sproule since 2017. He has over thirty-five years of industry experience, including five years of reserves and resource evaluation experience, with an emphasis on type curve analyses for Canadian and US unconventional assets.

Tamara Warren P. Eng.

Petroleum Engineer

Tamara has been teaching with Sproule since 2017. She has five years of experience with Western Canadian Sedimentary Basin reservoirs, estimating technical reserves and resources. She specializes in capital and operating costs for Canadian reserve evaluations.

Liam O'Brien P. Eng.

Petroleum Engineer

Liam has been teaching with Sproule since 2017. He has six years of reserves and resource evaluation experience and is a key member of the commodity price forecasting team, helping to create Sproule’s publically available price decks, released monthly. 

Jeff Jackson P.Eng.

Petroleum Engineer

Jeff has been a Sproule professional since 2010. He has experience with the Western Canadian Sedimentary Basin and international reservoirs as well as experience in field operations. Jeff has experience in estimating technical reserves and resources as well as developing economic models for projects including bitumen, heavy oil and unconventional gas reservoirs. Jeff has spent the majority of his career at Sproule specializing in steam-assisted gravity drainage (SAGD) technical and economic evaluations.

Alec Kovaltchouk P.Geo.

Vice President, Geoscience

Alec Kovaltchouk is responsible for leading the Geoscience department at Sproule. Alec has been a Sproule professional since 1997 and has over 32 years of industry experience. He has experience in Argentina, Brazil, Canada, Colombia, the Czech Republic, Indonesia, Kazakhstan, Mexico, Poland, Romania, Russia (Dagestan, Siberia and the Volga-Ural region) and Ukraine. His worldwide experience includes conventional and unconventional oil and gas resources, including shale gas and shale oil, heavy oil and oil sands, and coal bed methane. Alec is fluent in English, Polish, Russian and Ukrainian.

Richard Brekke

Senior Petroleum Engineer

In his 35 years of industry experience Richard has been the President of a Canadian publicly traded oil and gas company as well as the cofounder and President of a private Canadian oil and gas company. He has over 30 years’ experience in the Western Canadian Sedimentary Basin.

Kristian Wieclawek

Petroleum Engineer

Kristian has been a Sproule professional since 2011. He is a qualified reserves evaluator as defined in National Instrument 51-101 (Alberta Securities Commission), focused on reserves evaluations, resource assessments and technical due diligence in the Western Canadian Sedimentary Basin. He has experience evaluating unconventional resource plays, including the Montney, Duvernay, Horn River and Liard Basins, as well as in heavy oil, encompassing CHOPS, waterflooding and enhanced oil recovery.