Sr. Reservoir Engineer

About the Role

Ecopetrol S.A. is an integrated oil and gas operator and the largest company in Colombia. It participates in all segments of the hydrocarbon chain: exploration, production, refining and commercialization. With 67 years of history, its extraction fields are in the center, south, east and north of Colombia. It has two refineries (Barrancabermeja and Cartagena); three ports for the export and import of fuels and crude oil and two maritime terminals. It also owns most of the oil pipelines in Colombia that intercommunicates production systems with large consumption centers and maritime terminals. It has a stake in the biofuels business and has a presence in Brazil, Peru, Mexico and the Gulf of Mexico in the United States. Ecopetrol's shares are listed on the Colombian Stock Exchange and its ADRs are listed on the New York Stock Exchange. The Republic of Colombia is the majority shareholder with an 88.49% interest.

Ecopetrol is currently exploring the opportunity to engage in the exploration and development of unconventional resources. By doing so, Ecopetrol will balance its upstream portfolio with short-term hydrocarbons and add diversification from a geographical and play perspective with access to light oil and gas. Moreover, engaging in unconventional opportunities outside of Colombia will allow Ecopetrol to learn the nuances of exploring and operating unconventional resources.

Rodeo is a Joint Venture (JV) between Occidental Petroleum and Ecopetrol in the Midland Basin, Texas, United States to develop unconventional resources. Oxy will operate the holdings based on a field development plan agreed upon by both companies. Ecopetrol will actively engage in the operations through the management team to build a robust understanding of unconventionals and provide oversight to the operations.

Responsibilities

• Create and refine 'Vision Well' designs for various Permian benches ranging from Clearfork to Woodford.
• Lead end-to-end technical design of HnP pilots, including optimizing soak times, injection rates, and analyzing recovery factors.
• Utilize WhitsonPVT to develop robust models essential for accurate compositional simulation.
• Recommend optimal spacing and stimulation designs based on high-fidelity reservoir analysis.
• Provide production forecasts to build robust economic cases for IOR/EOR projects.
• Lead documentation for annual reserves reporting in compliance with SEC/PRMS guidelines.
• Lead contact on JIP field test projects.

Qualifications

• BS degree in Petroleum or Chemical Engineering.
• Minimum of 8 years' experience in reservoir engineering.
• At least 3 years of unconventional development experience; Permian Basin experience preferred.
• Strong preference for enhanced oil recovery experience, including simulation and huff-and-puff operations.
• At least 3 years of experience for advanced RTA analysis.
• At least 3 years of experience in ComboCurve or similar tools for cloud-based type curve generation and economic forecasting.
• Proficient in written and spoken English; Spanish fluency desirable.
• Experience with third-party data platforms (e.g., Enverus, NoviLabs).
• Advanced proficiency in MS Excel and Spotfire.
• Demonstrated experience implementing and leveraging AI/ML-enabled workflows preferred.
• Expert-level proficiency in CMG GEM, Eclipse 300, or tNavigator to model complex fluid phase behavior and viscosity reduction.
• Deep experience in designing and optimizing Gas Huff-n-Puff (HnP) cycles (CO2 or Produced Gas) for tight oil reservoirs.
• Significant experience with Whitson+ for multi-well tracking.
• Advanced skill in Equation of State (EOS) modeling and fluid characterization utilizing WhitsonPVT.

Candidate Profile

• Mid-level, high performing and/or high-potential employee (10+ years of experience).
• Demonstrated ability to work with operators / partners / suppliers in prior assignments.
• Flexibility to travel to the field as required as well as between Colombia and Texas.
• Fluency in English and Spanish desirable.
• Interest in pursuing longer-term career in Ecopetrol post-secondment and ability to demonstrate its values.
• Strong interpersonal skills, confidence, and ability to work well with diverse personalities and work force.
• Articulate, effective and persuasive in verbal and written communication.
• Curious mind with an ability to ask great questions.
• Thinks outside the box with a passion for exploring and building knowledge.
• Resilient (adaptable and dynamic).
• Passion for knowledge transfer and people development.
• Drives for results that significantly impact company performance with a sense of urgency.
• Embraces change and enjoys challenges.
• Welcomes new ideas & explores different approaches.
• Excellent organization and time management skills.
• Ability to work effectively and coordinate activities across disciplines, both technical and support.

Organizational Competencies

• Team Spirit - Working with others towards achieving the goals of Ecopetrol Permian. Keeping the commitments agreed upon, actively participating, and proactively sharing knowledge and information to learn and grow as a team; shaping and promoting synergistic work between the different areas as part of the culture of Ecopetrol Permian.
• Passion for Excellence - Working through processes, with operational discipline, giving the best of oneself to achieve outstanding results, continuously improving and innovating.
• Commitment to Life - Acting to ensure a healthy, safe, and clean environment in daily activities, putting the integrity of the people, the environment, and the community as a priority value. It involves identifying and assessing risks in advance and implementing actions necessary to eliminate, control, or reduce them.
• Business Ethics - Creates a culture that fosters high standards of integrity and honesty; holds self and others accountable for rules and responsibilities.
• Communications - Exhibits good listening and comprehension. Expresses ideas and thoughts in written form. Expresses ideas and thoughts verbally. Keeps others adequately informed. Selects and uses appropriate communication methods.