Abstract
Summary A big-bore, high-pressure/high-temperature (HP/HT) drilling and completion program of seven wells was undertaken under challenging conditions in a low-pressure carbonate reef in Indonesia. Significant enhancements made during the program substantially reduced well times and cost. These wells incorporated the largest tubingless gas completions in the world. Higher-than-anticipated initial flow rates were achieved through an innovative strategy to decrease formation damage. The wells were completed openhole without pumping kill-weight fluids at the end of underbalanced drilling (UBD) operations. These wells are the first to combine big-bore completions, drill-in liners, and UBD in individual wellbores.
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