Country

  • Nigeria
  • City

  • Lagos
  • Industry

  • Oil & Gas
  • Job Type

  • Office , Onsite
  • Posting date

  • January 29, 2026

Contact

Anne Dung

  • Permanent
  • Nigeria
  • Competitive NGN / Year

Website Worldwide Technical Services Ltd.

Senior Reservoir Engineer

January 29, 2026

Job Description

Job Title: Senior Reservoir Engineer

Location: Lagos/ Port Harcourt

CLIENT SUMMARY
A major player in the energy sector.

JOB SUMMARY
Provide effective reservoir management of the producing reservoirs.

To provide reservoir engineering input and leadership for projects from initial opportunity identification to cessation of production, including selection and definition of development plans. Ensures integration of subsurface and surface parameters in dynamic reservoir analysis, maximizing recovery efficiencies and optimizing production potential.

Manage reporting lines and mentor junior staff.

 
KEY RESPONSIBILITIES
Strategic

  • Reviewing / designing, supervising and analyzing plans and results for pressure transient tests.
  • Reviewing or preparing appraisal programs for reservoir engineering data (PVT, RCAL / SCAL, pressure data, well tests, MDT, etc.)
  • Reviewing data acquisition reports and lab reports from contractors – quality check samples & results, extract properties required for reservoir engineering studies
  • Developing production forecasts and predicting reservoir performance for approval of well proposals
  • Understand and support efforts to mitigate subsurface risk
  • Proposing cost-effective reservoir monitoring and surveillance programs
  • Perform and supervise reservoir simulation studies to test development concepts / recovery schemes and optimize recoveries
  • Continuously monitor reservoir performance, analyze data, and prepare reports to track progress and identify areas for improvement. 
  • Perform and supervise well and reservoir surveillance analysis & make recommendations for optimization and proper management of reservoirs
  • Prepare and review written reports of reservoir performance, including explaining and presenting results
  • Develop and quality check reservoir performance predictions, including decline analysis and material balance on producing assets
  • Provide Reservoir Engineering input to all infill Well Proposals in terms of reserve calculations, opportunities, well locations, Risks, and economic analysis.
  • Prepare and quality check forecasts for business plan and monthly production outlook
  • Review deterministic and probabilistic estimates of in-place hydrocarbon volume
  • Support reservoir related due diligence on potential farm-ins and acquisitions
  • Estimate and review reserves / resources associated with opportunities

KNOWLEDGE & SKILLS REQUIRED

  • 1st degree in Petroleum Engineering or other Engineering degree with appropriate professional experience, required
  • 5 – 8 years of experience required
  • Skilled in key subjects within reservoir engineering discipline, which includes but not limited to: reservoir studies, reserves estimation, well test analysis, rock and fluid properties, decline curve analysis & production forecasting, well & reservoir management, field development planning and production support activities
    • Skill level = Capacity to perform these duties with minimal supervision
    • Experience with material balance and reservoir simulation required
  • Experience using standard Reservoir Engineering software, particularly: OFM, MBAL / PROSPER / GAP, Eclipse /T Navigator, Petrel, Ecrin / Saphir
  • Strong Computer Skills
    • High skill level user of MS Office software: Word, Excel & PowerPoint
  • Petroleum economic skills is a plus
  • Strong interpersonal and communication skills, including presentation skills
  • Solid analytical skills: problem-solving and critical thinking
  • Networking and relationship management
  • Technical writing
  • Project management skills
  • Business performance monitoring and reporting

 
Core Competencies:

  • List the key competencies required for this job:
  • Working Knowledge of Reservoir Data Acquisition   
  • Skilled in Reservoir Fluid Properties   
  • Skilled in Reservoir Rock Properties   
  • Skilled in Well Testing & Pressure Transient Analysis
  • Skilled in Determination of Initial Reservoir Conditions   
  • Skilled in Fluid Transport through Porous Media   
  • Skilled in Material Balance
  • Skilled in Dynamic Reservoir Simulation   
  • Skilled in Decline Curve Analysis   
  • Working Knowledge of Oil and Gas Reserves Estimation     
  • Skilled in Reservoir Surveillance   
  • Skilled in Well Performance   
  • Skilled in Field Development Planning    
  • Working Knowledge of Integrated Reservoir Characterisation   
  • Working Knowledge of Field/Asset Management    
  • Awareness of Enhanced Oil Recovery (EOR) Methods   
  • Awareness of Unconventional Hydrocarbons e.g. Heavy Oil   

 
Other Competencies

  • Oil & Gas Industry Dynamics
  • Project Management
  • Relationship Management
  • Leadership/Supervisory
  • Team Playing
  • Oral & written Communication
  • Strong exposure to good HSE Experience, practice and certification

 

 

 

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