Publications

The Bekapai field, located in Mahakam Block of East Kalimantan, Indonesia had been previously produced from the main zone. However to increase the field production, shallow reservoirs were being targeted which have weak and unconsolidated sands that are prone to sand production. To address this problem, the Single Trip Multi-Zone was deployed, offering efficient sand control and zonal isolation. This paper presents the first offshore application of rigless gravel pack using the hydraulic workover unit 340 K (HWU 340 K) in the Bekapai-Mahakam Offshore Field, focusing on two wells with seven target zones. The HWU 340 K was selected for its compact design & compatibility with minimalist offshore platform. Despite operational challenges such as equipment failures, debris issues and weather related delay, the project had successfully completed all zones with effective HRWP Treatment. Due the operational challenges and problem, the operation was extended to 146 days. Weather condition particularly high winds and sea swells, further impacted crane barge operations, highlighting the need for robust weather planning. The completion cost itself has increased to 14% of total well cost, up from the planned 8%, the project demonstrated the feasibility of rigless gravel pack completions tin the aim for cost efficiency and one of alternative in dynamic brown field drilling sequence plan while maintaining a strong safety record with no HSE incidents. This case study underscores the potential of HWU 340 K for rigless completion in minimalist offshore environment, offering valuable lessons for optimizing future operations.