OKEA has completed drilling of the reservoir section of the Infill Ø well (6407/9-11) in the Draugen Field.
The well targeted a possible unswept oil accumulation in the producing reservoir which could potentially be drained by a future oil producer well. The log data from the well, as published on okea.no during the drilling operation, confirm the presence of an oil column at the well location.
Depth conversion of the seismic data was the principal pre-drill uncertainty for this well and the reservoir was encountered 5 m deeper than prognosed, but despite this, OKEA interprets that there is still a 2.5 m column of oil remaining at the top of the Rogn Formation reservoir at this location.
The data indicate that this area of the field is already being drained efficiently by existing wells and that it is therefore not necessary to invest in a new oil producer well to drain the remaining attic oil volume.
The well was drilled with a highly cost-effective, slim design, with the top-hole section being ‘batch-drilled’ together with the Skumnisse well to further reduce costs. This efficiency enabled reservoir data to be acquired on the 5th day of operations and demonstrates the ability of OKEA’s drilling and subsurface teams to maximum the value from each drilling campaign without compromising safety.
The well has now been plugged and will be abandoned before the rig returns to the Skumnisse (6407/9-12) location to continue drilling that appraisal well through the reservoir section.
At NCS Exploration Strategy, November 20-21 in Stavanger, Andrew McCann (SVP Subsurface) will present OKEAs strategy.