Devising and Optimizing Development Strategies for South Fuwaris Field Using Integrated Reservoir Simulation Models

Abstract

The South Fuwaris Field is located in the Partitioned Zone (PZ) between Saudi Arabia and Kuwait and is operated jointly by Saudi Arabian Chevron (SAC) and Kuwait Gulf Oil Company (KGOC). South Fuwaris produces light crude (24 0 API) from two prolific heterogeneous carbonate reservoirs: Ratawi Limestone and Ratawi Oolite. The field has been developed using vertical and horizontal wells with all wells on electric submersible pumps.Fit-for-purpose static and dynamic models were constructed to validate the Original Oil In Place (OOIP) and to map the distribution of the remaining oil potential in order to devise an optimized development plan for both carbonate reservoirs. This paper illustrates the steps used to build the dynamic model and adopted workflows to identify new infill and waterflood opportunities including the evaluation of pattern versus peripheral injection and optimize placement and completion strategies of vertical and horizontal wells.The paper also presents the processes used to narrow the uncertainty range in Original Oil-Water-Contact (OOWC) surfaces, historical dump flooding volumes, aquifer size and flux, and Pressure Volume Temperature (PVT) data in order to reach a reasonable and defendable history match with an acceptable range of errors and deliver a reliable forecasting tool. Moreover, the paper demonstrates how the reservoir simulation work was efficiently utilized as a mentoring platform for young professional in reservoir simulation and earth science.