FTSE 100-listed Tullow Oil on Tuesday revealed that the Wisting Alternative well, offshore Norway, had reached total depth and although oil shows had been encountered, the reservoir rock was of poor quality. As such, it will be plugged and abandoned, although work on the Wisting Central discovery will continue. Tullow has a 20% interest in the licence in which the well is located. Angus McCoss, Tullow's Exploration Director, said: "Wisting Alternative was a high risk wildcat well which has provided important information about the regional geology in the Barents Sea. "The material Wisting Central oil field, discovered in the same licence in September this year, will now be prioritised for appraisal in 2014 alongside our significant programme of high impact wells that includes the operated Mantra well which is due to spud in November."NR