PRINCIPAL RESERVOIR ENGINEER

Overview Primary Purpose of the Job Lead and undertake Reservoir Engineering studies of the QatarEnergy operated Dukhan oilfield to optimize field development plans, support simulation model maintenance, analyze reservoir and well performance data, develop reservoir surveillance programs and conduct reservoir management activities, including supporting planning and activity on CO2 WAG pilot. Prepare detailed / integrated development plans for underdeveloped hydrocarbon resources and participate in interdisciplinary reservoir study teams. Principal Accountabilities

Lead the construction, and model history match to assess CO2 WAG EOR performance. Help develop and deliver optimized mid / long term strategic and tactical plans for the Operated Onshore field Assets. Perform the annual review of reserves, generate long-term production / injection forecasts for Asset Planning, Business Planning and drilling / workover schedule. Plan and supervise the acquisition (and perform analysis / interpretation) of Reservoir Engineering data from new and replacement wells for updating dynamic reservoir simulation models and determining optimum development plans and drilling targets. Ensure all data and analysis is input into integrated reservoir / field development studies. Maintain, develop and run 3D multiphase black oil / compositional dynamic reservoir models for mathematical simulation of reservoirs and field development planning. Develop / contribute and integrate Reservoir Engineering inputs into the short term (drill / replacement well projects, workover projects & drilling / workover operations), medium term (reservoir voidage management) and long term (field development and asset value optimisation) activities. Identify target reservoirs / reservoir layers and determine well-reservoir contacts for new / replacement vertical / deviated / horizontal drill projects into multi-layered heterogeneous reservoirs to optimize field development. Prepare detailed, integrated development plans for undeveloped hydrocarbon resources. Provide input to existing reservoir exploitation with regard to implementation of longer term reservoir management plans. Ensure surveillance programs are efficient and effective. Advising on reservoir management policies and well production limitations. Lead reservoir performance surveillance review sessions with multi-discipline teams. Coordinate and follow up the execution of reservoir-wide pressure transient analysis surveys. QA / QC Reservoir Engineering data and maintain Reservoir Engineering databases including real time data links. Provide on-the-job coaching and mentoring of Qatari staff. Share and leverage knowledge and skills across Operated Onshore Field subsurface teams.

Decision Making Authority

Within guidelines set by The Head, the position is answerable for his / her actions, and for the consequences of them. The incumbent is expected to be capable of working independently with only periodic monitoring and guidance.

Context / Special Features / Challenges

Identify and leverage the key variables in finding solutions to wide-ranging problems involving multiple disciplines. Identify subsurface uncertainties and develop mitigations / solutions by assessing alternatives and related risk / reward. Ensure that relevant environmental and safety standards are enacted for all projects and activities under his / her authority. Produce high Quality but "fit-for-purpose" work. Through the Quality of the work, establish a high degree of trust between the different disciplines of the team.

Experience Prefer work experience of at least 15 years as a Reservoir Engineer in the Oil and Gas industry with demonstrated Reservoir studies / performance optimization expertise in mature large oil and gas fields. Experience working on mature oil fields under waterflood. Experience in development plan maturation for undeveloped hydrocarbon resources. Experience in transient well test interpretation, material balance modelling and performance prediction. Experience in numerical reservoir simulation (black oil and compositional), history matching and field development plans. Experienced in EOR techniques and modelling, ideally on operating assets, in particular CO2 WAG development. Experienced in infill drilling and workover planning with a strong understanding and experience of surveillance and performance optimization, gained in carbonate oil and gas reservoirs. Must have excellent teamwork and communication skills. Experience working in a multicultural environment is a plus. Must be able to communicate effectively with peers, less experienced staff, field staff and management. Must be able to work effectively across organizational boundaries. Must be familiar with reserves evaluation, classification and booking methodologies using PRMS. Ability to manage multiple projects and activities simultaneously. Skillful in managing reservoir studies project with a sound ability to manage time, make quality decisions, manage and measure work.

Desirable

Experience in reservoir fluid sampling, fluid property modelling, RCAL / SCAL studies. Desirable to have knowledge of uncertainty analysis and risk assessment / management. Experience in carbonate reservoirs. Significant experience in an operating company.

Software Knowledge / Experience

Simulation - Eclipse 100 / 300 Petrel RE Uncertainty Analysis - MEPO, Petrel U&O Fluid property modelling - PVTSim Material balance - MBAL Well / Surface Network Modelling - Prosper / Gap Well test interpretation - Saphir Reservoir surveillance - OFM

Qualifications BSc in Engineering or Applied Sciences, preferably in Reservoir / Petroleum Engineering.

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