Worldwide Petroleum Consulting
Steven R. Gilbert

Steven R. Gilbert

Steven R. Gilbert
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Steven R. Gilbert joined DeGolyer and MacNaughton in 1983, specializing in reserves estimations, production forecasting, gas deliverability modeling, and economic evaluations of oil and gas fields worldwide. Before joining D&M in 1983, Gilbert was a reservoir engineer for Exxon Company, U.S.A., initially responsible for several south Texas oil and gas fields.

Gilbert graduated magna cum laude in petroleum engineering from the University of Missouri-Rolla in 1976, and is a registered professional engineer in Texas. A member of the Society of Petroleum Engineers and the Society of Petroleum Evaluation Engineers, he was named a Senior Vice President at D&M in 2015.

Geographical Experience

  • Algeria
  • Austria
  • Bolivia
  • China
  • France
  • Gabon
  • Germany
  • India
  • Indonesia
  • Italy
  • Kazakhstan
  • Kuwait
  • Libya
  • Mexico
  • Nigeria
  • North Sea
  • Pakistan
  • Russia
  • Serbia
  • Thailand
  • Ukraine
  • United States (onshore and offshore)
  • Venezuela
  • Yemen

Topical Areas of Expertise

  • Performance trend and material-balance analysis.
  • Tight gas and over-pressured reservoirs
  • Production planning
  • Workover planning

Major Projects

Gilbert is currently a Staff Engineer in the Central Europe/Asia Division, conducting numerous major gas and oil reserves appraisals and gas deliverability studies in many different areas throughout Europe, Africa, southeast Asia, and the Middle East. Prior to his current assignment, Gilbert coordinated multidisciplinary teams involved in reserves evaluation throughout Russia.

Many different clients have relied on his expertise in order to provide gas reserves certifications necessary to establish or modify important long-term gas sales agreements. He has performed special studies to support the financing of existing and future LNG projects in both the Middle East and Africa. For example, in Yemen, he evaluated gas reserves in 24 fields on 2 major blocks as part of a planned LNG project. Since most of the reserves were associated with gas caps that have undergone long-term cycling operations, the project required a detailed evaluation of the effects of cycling on the composition of gas remaining in the reservoirs. This study led to the successful financing, construction, and start-up of the plant.