Armando Guillen

I am a reservoir and production engineering consultant with 24 years of international experience across upstream oil and gas assets in Europe, the Americas, and the Middle East. My work focuses on improving field performance through integrated reservoir management, production optimization, and field development planning.

I have supported operators and consultancies on mature and development assets, helping diagnose production constraints, improve forecasting accuracy, and enhance recovery through data-driven subsurface analysis. My experience includes production systems evaluation, decline curve analysis, reserves assessment, and development planning for gas condensate and oil fields.

I am particularly experienced in working with production and reservoir data to support decision-making, including performance diagnosis, forecasting, and economic evaluation of assets. I have also contributed to production database development and workflow improvement for engineering teams.

I work with clients who need support in:

Reservoir and production performance analysis

Field development planning and scenario evaluation

Production forecasting and decline analysis

Asset evaluation and reserves support

Production data structuring and interpretation

My approach is practical and engineering-driven: I focus on turning subsurface and production data into clear, actionable insights that support operational and investment decisions.