Sr Petroleum Engineer (Reservoir)


Employs fit-for-purpose models, and reservoir management & surveillance skills to generate profitable opportunities to grow reserves. Strong knowledge of production operations in onshore & offshore international settings enables effective interfacing with field operations. Have worked as a business planner with operated and non-operated assets, including asset acquisitions & divestments with focus on economic evaluation. 

Primary focus for past 10-yrs has been generating profitable opportunities to grow reserves by developing & stewarding reservoir management plans including reservoir surveillance and production optimization plans fully aligned with the field development & depletion strategies as well as identifying recovery enhancements with on-the-shelf completion and classical reservoir engineering & monitoring technologies.

Enthusiastic leader with good organizational and communication skills. Bilingual in English and Spanish with intermediate fluency in Portuguese.

Houston, TX

ExxonMobil Corporation 1999 – 2015
Zakum Development Company 2015
Offshore Subsurface Engineer
Seconded to ZADCO Upper Zakum 750 kbd project (UZ-750). Offshore artificial Island & extended reach well (ERD) redevelopment of carbonate field Upper Zakum.
• Planned rigless well interventions in Offshore Artificial Islands under Simultaneous Operations (SIMOPS) environment. Identified the well handover process as a key area for cost reduction and increased efficiency for well interventions during SIMOPS. Savings 0.25 M$/well intervention.
• Wrote Well ZADCO Handover Manual ensuring documentation of well operating envelopes for initial ERD wells.

ExxonMobil Production 2013 – 2015
Reservoir & Subsurface Engineer
Support Exxon Neftegas Ltd (Sakhalin 1). Offshore & Onshore Artic oil development: Chayvo & Odoptu fields (world record ERD wells with sand control & zonal isolation with ICD & multilateral) & Arkutun Dagi field (Ice-resistant fixed platform with gravel packed intelligent wells) .
• First program of production tracers in XOM, realizing savings of 2.5M$ per well for a 20 well program and acquisition of reservoir information not possible with conventional production logs.
• Recommended completion for high fines & low strength formation resulting in addition of profitable drilling opportunities to develop ~260 MBO in place.
• Develop fit-for-purpose Netool models to describe fluid flow in complex long horizontal wells (zonal isolation with ICD’s). Knowledge incorporated to simulation models & transferred to younger team members through training sessions.
• Develop Integrated Production Model (facilities coupled with reservoir) to support XOM negotiating position with Rosneft for prioritizing XOM operated drillwells access to limited existing facilities.
• Reduced execution risks for extended reach well interventions by organizing systems integrity test for intervention tools, resulting in a successful world record plug setting (HEX) at 8750m.

ExxonMobil US Production 2010 – 2013
Reservoir Team Lead
Technical lead of reservoir management for Offshore Continental Shelf, California - Pescado, Sacate and Hondo reservoirs develop by 3 platforms (up to 1200 ft water depth) and onshore Texas gas plays
• Delivered world-class ERD wells in the Sacate Field (>$40M/well). Develop innovative fit-for-purpose models to assess the resource, including development of first of first ng develoment chnical dcumentation olation with ICD of first ng develoment chnical dcumentation olation with ICDof first ng develoment chnical dcumentation olation with ICDWorst Case Discharge technical documentation for BOEMEconomic Analysis ong envelopes al wellicking atellite limitsEconomic Analysis ong envelopes al wellicking atellite limits.
• Provided functional expertise and mentoring for junior Engineers in engineering, opportunity generation and economic analysis.
• Provided quarterly reserves updates (SEC quality) to US Production Manager of OCS California & matured Texas gas plays.
• Generated & developed plans for workovers & large artificial lift programs including facilities debottlenecking in South & East Texas (Frio / Vicksburg & Cotton Valley / Haynesville shale)

Esso Angola Block 15 2007 – 2010
Kizomba Reservoir Engineer Lead
Reservoir surveillance & optimization of Modo & Saxi-Batuque offshore fields; 800-1100 meters water depth developed with 2 FPSO’s 105 kBD each & 36 subsea wells: producers, gas & water injectors.
• Extended the production plateau in both Kizomba C FPSO’s, by managing reservoir voidage while maintaining wells within well operability limits (WOL).
• Steward the reservoir management plan for Kizomba C, including development and execution of surveillance plans, developing capacity / production forecast & quarterly reserves updates.
• Build integrated production models to identify, implement and monitor capacity enhancement opportunities including facilities debottlenecking and artificial lift opportunities; resulting in maximization of subsea flowlines in Kizomba C and Marimba satellite development in Kizomba A.
• Provide guidance to junior engineers & technicians on reservoir surveillance & optimization, Integrated Production Modeling and economic analysis.

Esso Angola Block 15 2006 – 2007
External Business Planner
Managed the communications with Partners. Coordinated Work Plans & Budget and stewarded the integrated Block 15 Production Sharing Agreement (PSA) economic model.
• Manage Sonangol (Concessionaire) & Co-ventures interfaces and its sensitivities
• Update & maintain the integrated Block 15 (PSA) economic model and provide analysis such as crude entitlement outlook to affiliate and XOM corporation.
• Coordinated budget B-15 approval by consolidating & organizing the Operating Committee Meeting (OCM) and releases of information to the Government of Angola & Partners.

ExxonMobil de Venezuela 2004 – 2006
Business Planner
• Coordinate, consolidate and obtain management approval of the Affiliate Company Plan as well as major investment opportunities.
• Steward of the Affiliate economic models. Provided expertise, analysis and guidance for valuation of significant investment opportunities, e.g. successful divestment of QLC asset (non-operated asset).
• Coordinated investment reappraisals of operated & non-operated assets as well as affiliate internal corporate reports.

ExxonMobil Cerro Negro - Reservoir & Subsurface Engineer 1999 – 2004

BP Exploration - Production Engineer 1997 – 1999

Additional Related Experience

Bureau of Economic Geology – Research Assistant 2000 – 2001

Awards and Certifications

Hydraulic Fracturing School. Petroleum (etc.) 2017
Consulting in Practice Univ of Houston 2016
Mastering Data Analysis in Excel Duke University via Coursera 2016
Data Visualization and Communication with Tableau Duke University via Coursera 2016


Integrated Production Modeling | Netool | Reservoir fit-for-purpose modeling | Stimulations | Log Analysis
Extended Reach Wells| Multilateral Wells | Intelligent Completions | Sand Control | Artificial Lift |
Reservoir Surveillance & Optimization | Opportunity Maturation | Reserves Analysis | Depletion Planning | Traditional Decline Analysis: PTA & RTA | Strategic Planning | Reserves Valuation.
Economic Analysis Tools: Decision Analysis, Montecarlo Simulation, DCF & Real Option Valuation.


ExxonMobil Enterprise Leadership Program Kenan-Flager Business School University of North Carolina at Chapel Hill NC 2005
Master in Energy & Mineral Economics - The University of Texas at Austin 2001
Specialized Degree in Petroleum Engineering focus on Artificial Lift & Production Optimization – CIED (PDVSA affiliate) 1996
Mechanical Engineer – Universidad Central de Venezuela - 1994

Contact Information