Tethys Petroleum doubles revenues as Doris development continues

    By Jamie Ashcroft     During 2011, Tethys produced on average 5,730 barrels of oil equivalent per day and in the latter part of the year, as production continued to increase, it was producing 6,584 barrels a day.     During 2011, Tethys produced on average 5,730 barrels of oil equivalent per day and in...