A partnership joined by Repsol announced Tuesday it had made a new hydrocarbons discovery offshore Sierra Leone. The Jupiter-1 well was drilled in an area that already has produced successful results in 2009 and 2010, confirming the significant potential of this region in Africa. Repsol owns a 25% stake in the consortium, while the operator Anadarko has a 55% participation and Tullow Oil 20%. They drilled the Jupiter-1 well in block…