LONDON -- The 48/2c-5, Cobra appraisal well on southern North Sea block 48/2c, has reached TD of 11,805 ft (3,598 m), according to EnCore Oil.
Analysis of wireline log data suggests that the Rotliegendes Sandstone reservoir is gas-bearing as expected, the company says. However, until a full testing program has been completed there is still uncertainty as to whether this reservoir is capable of delivering significant flow rates, according to the company. The co-venturers have concluded that the results to date support a decision to flow test the well. It is expected that testing operations will take approximately 14 days subject to operational and weather constraints.
The main objective of the 48/2c-5 well is to establish whether the Rotliegendes Sandstone reservoir is capable of flowing at commercial rates. The well is being drilled up dip from the 48/2-1 well, drilled in 1984, which flowed at 2.7 MMcf/d. The original 48/2-1 well was interpreted as having reservoir damage and the company felt that reservoir performance could be improved by the use of modern drilling and completion techniques.
The EnCore-operated well is being drilled by theENSCO 80 jackup rig and is being managed by Applied Drilling Technology International (ADTI).