J. Craig Ruhs
Principal Engineering Analyst, Vice President
Craig Ruhs joined DeGolyer and MacNaughton in 2009 following a 6-year career as an officer in the U.S. Navy. He has 19 years of experience in the industry.
In 2003, Ruhs graduated from the United States Naval Academy with a bachelor’s degree in economics. Ruhs is a member of the Society of Petroleum Engineers and serves on the SPE-SRMS Training Subcommittee. He was named a Vice President of D&M in 2019.
Geographical Experience
- Algeria
- Angola
- Australia
- Brazil
- Canada
- Chile
- Colombia
- Guyana
- India
- Indonesia
- Italy
- Kenya
- Kuwait
- Libya
- Malaysia
- Mexico
- Mozambique
- Namibia
- Oman
- Pakistan
- Russia
- Saudi Arabia
- Thailand
- Trinidad and Tobago
- Ukraine
- United Kingdom
- United States
- Venezuela
Topical Areas of Expertise
- Reservoir modeling
- Material-balance analysis
- Decline-curve analysis
- Field development analysis and planning
- Economic modeling
- Canadian National Instrument 51–101 standards
- Coalbed methane evaluation
- CO2 Sequestration 45Q U.S. tax credit certifications
- CO2 monitoring, reporting, and verification (MRV) plans
- CO2 Storage Resources Management System (SRMS) standards
Major Projects
Working as part of an integrated project team, Ruhs has provided analytical expertise for evaluations of reserves, contingent resources, and prospective resources for oil and gas assets around the globe. His work includes large basin studies of the Cooper Basin, Australia for a major financial institute, a complete reserves and resources evaluation for offshore and onshore basins in Mexico, a countrywide prospective resources evaluation in Kuwait, and a reserves evaluation in Saudi Arabia.
Ruhs was a lead technical advisor to the Mexican government’s National Hydrocarbon Commission (CNH) during the Mexican energy reform, providing field and block evaluations focused on reservoir performance, field development, development timing, and economic evaluations and screening under multiple fiscal terms. Additionally, he has conducted many conceptual field development and optimization studies for onshore and offshore fields around the world, including LNG and FLNG field developments.
His most recent projects involved assisting clients with certifying their CO2-enhanced oil recovery MRVs for 45Q tax credits and evaluating SRMS CO2 storage resources for CCS and CCUS projects. Recently, Ruhs coordinated a due-diligence study for a Middle Eastern National Oil Company to provide credit providers assurance in the safety and long-term containment of CO2 for a large-scale CCS project. He has provided seminars to clients covering the topics of CCS, CCUS, PRMS, SRMS, coalbed methane, and prospective resources evaluations.
