Publications

Bravo field, located offshore East Kalimantan, is Indonesia’s first deepwater subsea tieback. It is a mildly overpressured, relatively lean, gas condensate field, developed with 2 subsea wells completed with FracPack for sand control and tied back to the existing Floating Production Unit of Wish field. The FPU has design capacity of 110 MMSCFD of gas, 4000 BPD of condensate, and 150 BPD of water for Bravo production. Each of the Bravo wells is equipped with a wet gas meter, an erosion probe, and multiple pressure & temperature gauges for production and reservoir performance monitoring/optimization. The gauges are located downhole and in the wellhead, both upstream and downstream of the subsea choke. This paper discusses early life performance monitoring of Bravo field as well as the major reservoir management surveillance challenges at subsea/subsurface level and how to mitigate them. Material balance equation methods for reservoir management will also be discussed. The monitoring results and data are then utilized to update recommended production operations limits and optimize the longer term reservoir management plan.