CHARLES T. DEIGH
Port Harcourt,Rivers State
Summary
Petroleum Reservoir and Production Optimization Engineer with over 20 years of experience in production optimization, reservoir engineering, dynamic simulation, WRFM delivery, and field development planning across onshore and offshore brownfield assets. Proven ability to increase oil and gas production, recover lost output, and improve asset value by using advanced techniques for well and field analysis, optimizing artificial lift systems (like ESP and gas lift), conducting nodal analysis, and integrating reservoir and facility engineering. Highly skilled in production surveillance, data-driven decision-making, and multidisciplinary collaboration. Demonstrates strong ability to analyze well, reservoir, and surface network performance; identify production constraints; and design and implement robust, safe, and cost-effective optimization solutions. Serves as a key technical interface between reservoir management, operations, and facilities engineering to improve recovery, production efficiency, and asset profitability across the whole asset lifecycle.
Overview
23
23
years of professional experience
1
1
Certification
Work History
Lead Petroleum Reservoir / Production Optimization Engineer
Oando Energy Resources Nigeria Ltd
08.2020 - Current
- Conduct daily production monitoring, variance analysis, and anomaly detection.
- Led integrated asset modeling for the NAOC - Gas Master Plan (GMP), delivering OBOB/GTS debottlenecking solutions to meet NLNG Train 7 gas supply commitments.
- Perform numerous Well tests, QC, and validate tests (production data integrity checks).
- Proactively identify opportunities for production enhancement, deferment reduction, and operational cost savings across the Kwale/Okpai and Ashaka unitized fields.
- Diagnose performance trends, including BSW, WOR, GOR escalation, and PI decline.
- Lead deferment identification, root-cause analysis, and production restoration activities.
- Deploy real-time surveillance systems for proactive well and field management.
- Execute Prospect evaluation using IPM's tools for analysis for production forecasting (Bonga North, Kolo Creek, Gbaran fields etc.).
- Optimize well placement and completion strategies in collaboration with subsurface and drilling teams.
- Conduct sensitivity studies for tubing and choke optimization (Irri and Isoko Wells).
- Identify flow assurance opportunities for Mbede Well-23S.
- Provide technical support for MER tests and validate production ramp-up frequencies.
- Perform nodal analysis and network modelling to improve well and system deliverability.
Petroleum Reservoir Engineer
Nigerian Agip Oil Company (NAOC)
01.2015 - 01.2019
- Delivered reservoir modelling and WRFM optimization studies.
- Designed and interpreted well tests for reservoir characterization.
- Conducted reservoir surveillance and intervention planning.
- Prepared annual production forecasts for business planning.
- Evaluated production constraints and recommended optimization activities.
- Managed production data, well test records, and data quality control.
Petroleum / Data Management Engineer
Nigerian Agip Exploration (NAE)
01.2007 - 01.2014
- Managed production data, well test records, and back-allocation processes.
- Performed nodal analysis for artificial lift optimization.
- Conducted MER/TAR validation for regulatory compliance.
- Supported operations with real-time performance monitoring.
Drilling Waste & Environmental Solutions Engineer
M-I SWACO Nigeria Ltd
01.2003 - 01.2007
- Developed drilling waste management strategies.
- Ensured regulatory compliance for waste handling and disposal.
- Optimized solids control systems to reduce environmental footprint.
Education
MSc - Engineering Management
IAU University
01.2024
Reservoir Engineering Training
ENI Corporate University
Milan01.2008
B.Eng - Petroleum Engineering
Rivers State University
01.2001
Skills
- Production Surveillance & Well Performance
- Nodal Analysis & Well Modelling
- Reservoir Engineering Competencies
- Artificial Lift Optimization (ESP & Gas Lift)
- WRFM (Well & Reservoir Management)
- Flow Assurance & Surface Facilities Management
- Data Analytics & Digital Tools
- Water/Gas Coning & Channeling Analysis
- Production Forecasting & Economic Evaluation
- Drilling Waste Management
- Leadership & Communication
- HSE & Regulatory Compliance
Reservoir & Production Engineering Software:
- Advanced Excel
- MBAL
- PROSPER
- GAP
- Eclipse
- OFM
- Avocet
- Ecrin-Sapphire
Affiliations
- Society of Petroleum Engineers (MSPE)
- Nigerian Society of Engineers (MNSE)
- Nigerian Institute of Petroleum Engineers (FNIPetGE)
- American Association of Petroleum Geologists (MAAPG)
Certification
- Material Balance & EOR—Schlumberger, 2020
- Eclipse Reservoir Simulation—Schlumberger, 2019
- Production Optimization — ENI, 2013
- Well Testing & Production Log Evaluation—ENI, 2011 & 2013
- Production Optimization — ENI, 2011
Timeline
Lead Petroleum Reservoir / Production Optimization Engineer
Oando Energy Resources Nigeria Ltd
08.2020 - Current
Petroleum Reservoir Engineer
Nigerian Agip Oil Company (NAOC)
01.2015 - 01.2019
Petroleum / Data Management Engineer
Nigerian Agip Exploration (NAE)
01.2007 - 01.2014
Drilling Waste & Environmental Solutions Engineer
M-I SWACO Nigeria Ltd
01.2003 - 01.2007
Reservoir Engineering Training
ENI Corporate University
B.Eng - Petroleum Engineering
Rivers State University
MSc - Engineering Management
IAU University