Key Personnel

Dr Duncan Lockhart, BAppSc (AppGeol), B.Sc (Hons), Ph.D.

Exploration Manager

Dr Duncan Lockhart has held a wide array of senior roles within the oil and gas industry both within Australia and Internationally. Recent experience has been with Central Petroleum as General Manager Exploration, Senex as Manager Regional Studies and Drillsearch as Executive General Manager-Exploration where he identified high value opportunities, provided technical assessments and successfully implemented regional strategic initiatives. Duncan’s professional experience encompasses 31 years with companies such as BHP Petroleum, Woodside, OMV, Galp Energia and Origin. Coupled with his experience, Duncan holds several qualifications including a Bachelor Applied Science- Applied Geology (QUT), Bachelor Science (Honours)-Geology (University of QLD) and a PhD (QUT).

Errol Johnstone, B.Sc (Geology/Geophysics)

Chief Geoscientist

Errol Johnstone has had a distinguished international career with ExxonMobil over 29 years in a variety of exploration and appraisal roles, with particular emphasis on new ventures, basin analysis and new play generation. Mr Johnstone is one of the industry’s experts in Structural Geology, Regional Geologic synthesis, Sequence Stratigraphy and 2D/3D Seismic Interpretation. He has extensive experience working on multi-disciplinary taskforce studies working with Russian, Japanese, Malaysian and Indonesian geoscientists and has also been active in teaching structural geology field schools and mentoring new geoscience staff.

With experience throughout most of the Australian and Far East basins including Russia, Mr Johnstone's multidisciplinary skills in geoscience integration generated many new exploration play initiatives resulting in several significant discoveries. 

Dean Johnstone, B.Sc (Geology/Geophysics)

Senior Geoscientist

Dean Johnstone is a geoscientist with over 40 years industry experience in oil and gas exploration, development and production. Over his earlier career with ExxonMobil and Delhi Petroleum, he has worked in a variety of lead technical roles with particular emphasis on Structural Geology, New Ventures, well site operations, field development/appraisal and mature field opportunity generation.  As well as working on a variety of projects within Australia and SE Asia, Dean had a long technical association with ExxonMobil’s activities in Papua New Guinea from Farm-in, through early appraisal and exploration drilling to FEED studies for the PNG Gas Project and LNG. In particular, the drilling of the Hide-3 and 4 wells established the presence of a multi TCF gas resource which became the foundation for the PNG LNG Project. This was followed by the successful drilling of the Moran oil discovery in 1998. More recently he was ExxonMobil’s Structural Geology Advisor for Canada, working in a wide range of geological settings which included Western Canada Basin Production assets and arctic exploration in the Beaufort Sea. On returning to Australia, Dean was involved in basin analysis for new Venture opportunities within SE Asia. Dean joined Melbana in 2011 and has worked on a wide range of opportunities within Australia, Cuba, Indonesia, Malaysia and New Zealand, focussing on New Ventures and active drilling programs.

Dr Rafael Tenreyro, B.Sc (Mining Eng.), M.Sc (Geophysics), M.Sc (Petroleum Geo.), Ph.D. (Expl Geophysics)

Cuba Representative

Dr. Rafael Tenreyro has over 40 years of experience in the Cuban oil industry, working in a exploration projects which lead to the discovery, evaluation and development of 14 oil fields. Most recently, he was the Exploration Director for Cupet (National Oil Company of Cuba) leading all exploration programs by Cupet and participating in exploration projects by foreign companies of Production Sharing Contracts. As well as his native Spanish, he is fluent in English, Russian and French.