Cooper Energy Limited reported that the Bunian-3 oil development well in the Sukananti KSO, South Sumatra, Indonesia was drilling ahead at 3,330 feet (1,015 meters) in 12.25 inch hole.
The 17.5 inch hole section was successfully drilled to 1,338 feet (408 meters) as planned, however once the 13.375 inch casing had been cemented in place, additional time was required to deal with shallow gas and address related operational issues.
These matters have been addressed and normal operations are now continuing. The latest estimate is that the well will reach its target depth of 5,518 feet (1,682 meters) during the final week of February.
Despite the increased operational time, the overall well cost is not expected to be materially different to the pre-drill approved budget figure. Bunian-3 is an onshore vertical well in the Sukananti KSO, South Sumatra, Indonesia.