Tina Manning
Project Geologist
Tina Manning is a geologist at DeGolyer and MacNaughton, specializing in reserves evaluations and prospective resources assessments across international assets. Prior to joining D&M, she held development and reservoir management roles at Denbury Resources, focusing on reservoir characterization, field development, waterflood and CO₂-EOR operations, and CCUS initiatives with DOE/NETL. She has 10 years of experience in the industry.
She holds a bachelor’s degree from Louisiana State University and a master’s degree in geology from the University of Louisiana at Lafayette. Manning has served as President of the Dallas Geological Society (2019–2020) and Secretary of the AAPG Southwest Section (2020–2021).
Geographical Experience
- Angola
- Azerbaijan
- Guyana
- India
- Iraq
- Kazakhstan
- Libya
- Nigeria
- Norway
- Russia
- Turkey
- Ukraine
- United Arab Emirates
- United Kingdom
- United States
- Uzbekistan
Topical Areas of Expertise
- Reserves evaluation
- Reservoir characterization
- Subsurface mapping
- 2–D/3–D reservoir modeling
- Enhanced oil recovery
- CO2 flooding
- Prospective resources analysis
Major Projects
Manning has led reserves and resources evaluations across conventional and tight reservoirs on international assets, integrating geological, geophysical, petrophysical, and production data for deterministic and probabilistic in-place assessments across clastic and carbonate systems.
She has supported A&D and IPO due diligence, including data room participation, model validation, and the estimation of ranges of in-place volumes, informing capital allocation and transaction decisions for operators, private equity firms, financial institutions, and government entities.
She managed waterflood and CO₂-EOR assets at Denbury Resources, delivering significant incremental proved developed producing reserves and 100-percent returns on investment on targeted projects through integrated subsurface analysis and field optimization.
She collaborated on executive-level field development plans, designed well spacing for sweep efficiency, and built 3–D models to optimize CO₂ utilization for a Powder River Basin project.
Manning has also evaluated depleted reservoirs for CO₂ storage potential, containment, and injectivity in collaboration with DOE/NETL (SECARB), monitoring subsurface migration and assessing reservoir behavior for enhanced recovery and long-term carbon storage.
