Consultoría Mundial de Petróleo y Gas
Diana M. Mancilla

Diana M. Mancilla

Diana M. Mancilla
Senior Engineer, Vice President
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Diana M. Mancilla joined DeGolyer and MacNaughton in 2019 as a senior engineer. Prior to joining D&M, Mancilla worked at Occidental Petroleum Corporation (OXY).

Mancilla graduated with honors from Universidad de America in Colombia in 2006 with a bachelor’s degree in petroleum engineering. She also graduated from Heriot-Watt University in the United Kingdom in 2015 with a master’s degree in reservoir engineering and earned a master’s degree in business administration and big data from Universitat Politecnica de Cataluña – EAE Business School in Spain in 2019. She is a member of the Society of Petroleum Evaluation Engineers, the Society of Petroleum Engineers, and the European Association of Geoscientists & Engineers. She is fluent in Spanish and English. She was named Vice President of D&M in 2022.

Geographical Experience

  • Angola
  • Brazil
  • China
  • Colombia
  • Ecuador
  • Indonesia
  • Iraq
  • Malaysia
  • Mexico
  • Peru
  • Thailand
  • United Kingdom
  • Venezuela

Topical Areas of Expertise

  • Reservoir simulation, modeling, characterization, and surveillance
  • Reserves and resources evaluations
  • Uncertainty analysis
  • Reservoir management
  • Data analytics
  • Business planning
  • Core analysis

Major Projects

Mancilla has coordinated a multidisciplinary team on a large-scale project for the national oil company of Indonesia, estimating reserves and contingent resources for over 200 field structures.

As a project leader for OXY Colombia, she provided the technical development plan of new discoveries in the Llanos Basin. She worked with a multidisciplinary group of exploration and development professionals from OXY Houston and OXY Colombia to assess the fields with a detailed reservoir characterization and numerical models, providing sound portfolios to extend the lives of oil fields in environmentally sensitive areas.

She was also dedicated to the management of mature fields, reservoir characterization, study and surveillance of waterflood projects, drilling proposals (exploratory and infill), and workovers.