Publications

X Field is a gas field in South Sumatra that has been producing from five wells ― Well-3, Well-4, Well -5, Well-6, and Well-01ST ― since March 2010. Initial Gas in Place (IGIP) was estimated 80.06 BScf, so X field has potential for further development. Feasibility for additional X Field development began with reservoir simulation and integrated simulation where the expected result would represent actual conditions. Simulation process began with structural modeling, modeling reservoir condition mathematically by integrating existing data (geology and reservoir) to get reservoir performance for several well’s condition and production profiles. Simulation model has 215 x 149 x 19 cells, or total grid cells of 608,665. In this study, Black Oil Reservoir Simulator and Pipeline Simulator were used. Reservoir simulation process began with several steps, data preparation, building model and grids, initialization, history matching and prediction. Initialization process included matching IGIP or total initial hydrocarbons in place with hydrocarbon control volume via volumetric method. History matching was done to ensure the model design represented actual reservoir conditions by changing the relative permeability and transmisibility. Advanced processing included integration of reservoir simulation with pipeline networking of in-field well design with well modeling simulation. Combinations of all simulations were accomplished using Paralel Virtual Machine. To determine optimum development scenario, several plans of developments of this field were predicted for13 years (until August 2026). The Scenario is divided into two parts, Scenario 1 is basecase + Work over, Scenario 2 is Scenario 1 + 1 new well, Scenario 3 is Scenario 1 + 2 new wells, Scenario 4 is Scenario 1 + 3 new wells, Scenario 5 is Scenario 1 + 4 new wells. The results between reservoir simulation and integrated simulations varied, i.e. S1 at 9.06%, S2 is 9.05%, S3 is 6.69%, S4 is 6.15%, and S5 is 8.6%.