GOA Reservoir Engineer

OOG Occidental Oil & Gas Corp; United States; On-site; USD 200,000 - 320,000; Full time

Job summary

Occidental Petroleum Corporation in Houston seeks a senior Reservoir Engineer to lead performance analysis, forecasting and reserves evaluations for Gulf of America assets. You will guide investment decisions, work on deepwater field development, and mentor junior engineers.

Applicants should have 15+ years oil and gas experience, strong knowledge of reservoir simulation and economics, and proven ability to collaborate with asset teams and SEC reporting.

Qualifications

• Bachelor’s degree in Petroleum Engineering or a closely related engineering discipline.
• 15+ years of total oil&gas experience with 5+ years in Gulf of America reservoir engineering and simulation history matching.
• Expertise in material balance, decline curve analysis and reservoir simulation for conventional reservoirs.
• Strong knowledge of SEC reserves guidelines and reserves reporting processes.
• Proficiency in petroleum economics and decision analysis, preferably using PEEP/MOSAIC.

Responsibilities

• Lead reservoir performance analysis and production forecasting for conventional deepwater reservoirs.
• Analyze production performance to identify optimization opportunities, risks and actions.
• Apply reservoir surveillance and management across the full field life cycle.
• Review monthly asset forecasts, annual portfolio submissions and SEC reserves; support third-party audits.
• Prepare, document and defend reserves estimates per SEC guidelines.
• Perform economic evaluations and model cash flows for acquisition/divestiture decisions.
• Use decision trees and probabilistic methods to de-risk investment opportunities.
• Lead special projects and mentor junior reservoir engineers.

Skills

Petroleum Engineering

Reservoir simulation

Material balance

Decline curve analysis

Well productivity analysis

History matching

SEC reserves guidelines

Petroleum economics

Decision analysis

Education

Bachelor's in Petroleum Engineering

Tools

PEEP/MOSAIC

Job description

Oxy produces, markets and transports oil and natural gas to maximize value and provide resources fundamental to life. The company leverages its global leadership in carbon management to advance lower‑carbon technologies and products. Headquartered in Houston, Oxy primarily operates in the United States, Middle East and North Africa. To learn more, visit Oxy Oxy strives to attract and retain talented employees by investing in their professional development and providing rewarding opportunities for personal growth. Our goal is to meet the highest employer standards by ensuring the health and safety of our employees, protecting the environment and positively impacting our communities where we do business.

Oxy’s Gulf of America (GOA) Asset Development (AD) organization is seeking a senior‑level Reservoir Engineer for one of several current and upcoming openings, either on an integrated asset development team assigned to a producing deepwater field or within the AD Development Excellence organization. The role leads reservoir performance analysis, forecasting, reserves and commercial evaluations that guide investment decisions and grow long‑term asset value.

Roles & Responsibilities

• Reservoir Performance & Forecasting: Lead reservoir performance analysis and production forecasting for conventional deepwater reservoirs using material balance, decline curve analysis, well productivity analysis and reservoir simulation.
• Production Surveillance: Analyze well and reservoir production performance to identify optimization opportunities, risks and recommended actions.
• Reservoir Management: Apply reservoir surveillance and management best practices across the full field development life cycle.
• Forecasts, Portfolio & Reserves: Partner with Planning and Asset Teams to review and compile monthly asset forecasts, annual portfolio submissions and SEC reserves, and support third‑party reserves audits.
• Reserves Compliance: Prepare, document and defend reserves estimates in accordance with SEC reserves guidelines.
• Commercial Evaluations: Perform economic evaluations in PEEP/MOSAIC, including forecasting, pricing, cash flow prediction and financial modelling, to value producing properties and support acquisition/divestiture transactions.
• Decision Analysis: Apply decision trees, probabilistic and statistical methods, optimization and portfolio analysis to frame, rank and de‑risk investment opportunities.
• Special Projects: Lead and coordinate special projects and ad‑hoc business needs (e.g., budget comparisons) with internal and external stakeholders.
• Mentoring: Coach and mentor less‑experienced reservoir engineers and participate in peer reviews and peer assists (approximately 10–25% of work time).

Required Knowledge, Experience, Skills & Competencies

• Education: Bachelor’s degree in Petroleum Engineering or a closely related engineering discipline.
• Professional/Technical Knowledge: Minimum of fifteen (15) years of total oil & gas experience, including at least five (5) years of Gulf of America reservoir engineering experience with hands‑on reservoir simulation history matching and modelling.
• Demonstrated expertise in material balance, decline curve analysis, well productivity analysis and reservoir simulation for conventional reservoirs.
• Strong working knowledge of SEC reserves guidelines and reserves reporting processes.
• Proficiency in petroleum economics and decision analysis, preferably using PEEP/MOSAIC.
• Skills & Competencies: Self‑directed; sets priorities, organizes and carries out own work plan while staying proactively available to all asset teams.
• Communicates clearly and effectively across disciplines and with all levels of leadership.
• Leads and coordinates ad‑hoc business needs and general reservoir engineering duties (e.g., budget comparisons, economic analysis, decision analysis) with minimal supervision.
• Collaborative team player in an integrated, multidisciplinary environment with a commitment to developing others.

Additional Desired Qualifications

• Master’s degree in Petroleum Engineering or a related field.
• Deepwater development experience, such as subsea tiebacks, waterflood or pressure maintenance projects.
• Experience supporting third‑party reserves audits and acquisition/divestiture evaluations.
• Experience with industry reservoir simulation, PTA and production analysis software.
• Professional Engineer (PE) license or SPEEE membership.

All qualified applicants will receive consideration for employment without regard to age, race, creed, color, religion, sex, national origin, ancestry, disability status, veteran status, sexual orientation, gender identity or expression, genetic information, marital status, citizenship status or any other basis as protected by federal, state, or local law.

Oxy has bold ambitions to achieve net zero and help others do the same. To get there, we’ll need great minds ready to unleash big ideas, strong leaders ready to inspire and team players ready to make it happen. Oxy produces energy and essential products to sustain and improve life on our planet. Our experienced teams, located in the United States, Middle East and Africa, are committed to safe and efficient operations and products, and to reducing our carbon footprint and helping others do the same. We are busy developing the big ideas and broad solutions we will need to achieve net zero. Every day, we get closer. And we won’t stop until we’re there.