Aug. 2012 - Wintershall, operator of Production License 370, has completed the drilling of wildcat well 33/6-4 on the Kakelborg prospect in the Norwegian North Sea. The well, which is dry, did not encounter reservoir rocks in the Lista formation. The objective of the well was to prove petroleum in reservoir rocks from the Paleocene Age. The well was drilled to a vertical depth of 5,950 feet (1,814 meters) below the sea surface, and terminated in the Jorsalfare formation in the Shetland group in the Upper Cretaceous. Well 33/6-4 was drilled by the Borgland Dolphin (DW semisub) drilling facility.

Jul. 2012 - Wintershall has spud the Kakelborg prospect, 33/6-4, in Production License 370 in the Norwegian sector of the North Sea. The operator is using the Borgland Dolphin (mid-water semisub) to drill the well in 1,076 feet (328 meters) of water. The rig is expected to reach total depth in August.

Apr. 2012 - Wintershall has received consent to carry out exploratory drilling of well 33/6-4 with the Borgland Dolphin (mid-water semisub). Well 33/6-4 lies in Production License 370 in the northern part of the North Sea in a water depth of 1,076 feet (328 meters). Drilling operations are set to begin in mid-May and last about 46 days.