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Nathan Reish

Nathan Reish

Nathan Reish
Senior Geologist
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Nathaniel E. Reish joined DeGolyer and MacNaughton in 2021 as a senior geologist in the Reservoir Studies Division. Prior to joining D&M, Reish worked at ExxonMobil, Rincon Energy, LLC, and California Resources Corporation (formerly Occidental Petroleum).

Reish earned a bachelor’s degree in geology with a special emphasis in engineering in 1998 and a master’s degree in geological sciences in 2000 from San Diego State University. He is a member of the American Association of Petroleum Geologists.

Geographical Experience

  • Colombia
  • Mexico
  • Oman
  • Qatar
  • Trinidad
  • United States

Topical Areas of Expertise

  • Seismic interpretation
  • Subsurface geological mapping
  • Stratigraphic interpretation
  • Structural interpretation
  • 2–D and 3–D reservoir modeling
  • Reservoir characterization
  • Geostatistics
  • Field development planning
  • Reservoir volumes and reserves

Major Projects

Reish has over 20 years of experience with subsurface mapping, geocellular modeling of complex structures, and detailed stratigraphic frameworks in a range of lithologies and depositional environments. He has regularly used these interpretations and models for development planning, reservoir simulation studies, resource volume estimates, and prospect evaluations.

Before joining D&M, Reish spent 14 years with California Resources Corporation in several roles. He was the primary geologic modeler and internal consultant responsible for reservoir characterization and simulation studies associated with the Elk Hills oil field as well as other California clastic and shale reservoirs. Reish was the chief geologist for California Resources Corporation and responsible for the technical competency of other geoscientists and quality across assets. He worked closely with individuals and integrated teams of geoscientists and engineers to advance the reservoir characterization of their fields through development, reserves, and life of field planning.