Specialist Reservoir Engineer

Reservoir Engineer Specialist 

The Reservoir Engineer Specialist is responsible for leading the development, maintenance, and application of integrated static and dynamic reservoir simulation models to support field development decisions and ensure alignment with company governance requirements. 

• Develop fit-for-purpose, history-matched dynamic simulation models. 

• Integrate multi-disciplinary data (geology, petrophysics, PVT, SCAL, pressure, production data) to ensure physics-consistent modelling. 

• Support field development optimization (FDP), well placement, and production forecasting. 

• Deliver decision-ready technical outputs for endorsement, including scenarios, sensitivities, and uncertainties. 

• Act as a technical focal point for simulation-related deliverables in governance meetings and workshops. 

• Support management framework and continuous model updates using new data. 

• Adhere to company policies, systems, processes, and procedures. 

• Achieving robust history match across multiple data domains. 

• Handling uncertainty in STOIIP and reservoir behaviour. 

• Integration complexity across seismic, SCAL, logs, and pressure datasets. 

• Model readiness versus project timelines. 

• Ensure all model outputs are defensible, auditable, and technically justified. 

• Support continuous updates, re-runs, and scenario testing. 

• Align multiple stakeholders across field development, production engineering, geology, and upstream teams. 

• Balance model complexity with practicality. 

• Support FDP optimization targets and production sustainability. 

• Manage multiple parallel deliverables, workshops, committees, and support requests. 

• High-quality history matching and predictive capability. 

• Strong understanding of reservoir physics, SCAL, and uncertainty workflows. 

• Ability to translate complex subsurface behaviour into clear outputs. 

• Coordinate effectively with geology, petrophysics, SCAL, and production teams. 

• Ensure integration across static, dynamic, and development workflows. 

• Deliver clear and defensible technical presentations. 

• Prepare pre-validated scenarios. 

• Ensure alignment with Integrated Reservoir Management and audit requirements. 

• Own the model lifecycle from build through updates and application. 

• Prioritize under pressure and manage multiple requests. 

• Maintain responsiveness to urgent simulation requirements. 

• Production forecasting. 

• Development scenarios. 

• Risk and uncertainty ranges. 

Comply with applicable HSE policies, procedures, controls, legislation, sustainability guidelines, international standards, best practices, and company codes of practice. 

Implement approved department policies, processes, systems, standards, and procedures in line with company and international standards. 

• Integrated static-dynamic simulation model. 

• History-matched reservoir model. 

• Data QC and integration. 

• Audit-ready assumptions and uncertainty documentation. 

• Present model re-evaluation results. 

• Deliver endorsement-ready technical packages. 

• Production forecasts and development scenarios. 

• Sensitivity cases. 

• Support field development strategy. 

• STOIIP uncertainty analysis. 

• P10, P50, and P90 ranges. 

• Risked production outlooks. 

• Update models using new wells, pressure, and surveillance data. 

• Maintain alignment with IRM requirements. 

• Interface with geology, petrophysics, production, and facilities teams. 

• Deliver a fully integrated and technically consistent subsurface model. 

• Static and dynamic simulation modelling. 

• 3D model building, initialization, history matching, and uncertainty handling. 

• Forecasting development scenarios. 

• Sensitivity analysis and uncertainty quantification. 

• Production forecasting and uncertainty reduction plans. 

• Production targets, recovery factors, well placement, and pressure maintenance. 

• Reservoir engineering inputs to FDP decisions. 

• STOIIP uncertainty assessment. 

• Reservoir connectivity and performance risk analysis. 

• P10, P50, and P90 scenario development. 

• Well placement optimization. 

• Injection strategy and VRR management. 

• Recovery mechanism evaluation. 

• Technical presentations and approval packages. 

• Stakeholder engagement and technical committee support. 

• Collaboration with geology, drilling, facilities, and production teams. 

• Alignment of subsurface and surface constraints. 

• Production profiles for business planning. 

• Support economic evaluations and development scenarios. 

• Strong foundation for future commercial and strategic roles.