President Energy (PPC LN) (not covered): Update in Argentina | Jadestone Energy (JSE LN); HOLD, £0.60: Update in Australia | Ophir Energy (OPHR LN): Discontinuing Coverage | Soco International (SIA LN) (not covered): Operation update | EnQuest (ENQ LN); HOLD, £0.25: 1Q19 update | Panoro Energy (PEN NO) (not covered): 1Q19 results | Tethys Oil (TETY SS)1,6; BUY, SEK85: To repurchase shares | BW Offshore to spin off E&P business | Tullow Oil (TLW LN); REDUCE, £2.00: Acquisition in Nambia