Mixed news from Tullow

10th Jan 2011 07:18

Tullow Oil had mixed news on Monday morning with success on one well in Ghana but a disappointing outcome on a prospect in Mauritania.The Tweneboa-3 appraisal well in the Deepwater Tano licence offshore Ghana has successfully encountered gas condensate in excellent quality sandstone reservoirs. Results of drilling, wire-line logs and samples of reservoir fluids, together with the well's down-dip position confirms the Greater Tweneboa Area resource base potential, Tullow said.On completion of operations, the well will be suspended for future use in the field development. The rig will remain in the Deepwater Tano block to drill the top-hole section of the Tweneboa-4 appraisal well. After that has been completed drilling will be suspended before moving to drill the high impact Enyenra-2A well, which will appraise down-dip from the Owo-1 oil discovery. The significant oil discovery, made by the Owo-1 exploration well has now been named the Enyenra field.Tullow has a 49.5% stake in the Deepwater Tano licence, where it is the operator. In a separate announcement, Dana Petroleum said it has plugged and abandoned the Cormoran-1 exploration well in Mauritania after it turned out to be a moderate gas discovery.Tullow Oil has a 16.20% interest in the discovery. The Cormoran-1 well encountered generally thin but good quality, gas-bearing, sands within the Pelican Group at depths between 3,376 metres and 3,711 metres true vertical depth subsea.