Leigh Jonathan Carless


Leigh Carless is a chartered chemical engineer and fellow of the Energy Institute, with over 30 years’ experience in the oil & gas, refining, petrochemical and energy industries. His responsibilities have included: lead engineer and technical authority for feasibility, conceptual and detailed process design, process safety assessment, process modeling and plant debottlenecking on green and brown field projects both onshore and offshore. This work has been performed in offshore and onshore oil/ gas systems, FPSOs, ethylene, ethanol, NGLs and naphtha units for: SBM, (Monaco and Houston); Shell (Brunei, Nigeria, Brazil, Mossmorran, Aberdeen, Southern North Sea); Exxon, (Houston and UK); BP (Grangemouth, Coryton, Aberdeen, Abu Dhabi, Houston). His experience includes platform and floating (FPSO, Spar, Semisub) topsides design, subsea systems and flow assurance, turret systems, pigging, slugcatchers, well tie-ins, water treatment, gas and water injection, hot & cold fractionation, gas compression, hydrogenation, refrigeration, gas dewpointing, condensate fractionation, hydrocarbon storage and transportation and flare/ blowdown, utility and waste treatment systems. This experience has required the ability to work independently and within/ directing small multinational and multidiscipline teams in order to achieve both technical and project objectives.


Bachelor of Science, Hons – Chemical Engineering, Imperial College, University of London – London, United Kingdom

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