Lead stories: Qatari geopolitical tensions escalate. Macro: Brent falls to US$48/bbl; Wood Mackenzie downgrades long term oil price forecast; ExxonMobil and Chevron outperform in a mixed week for oil and gas equities. Companies: partnership tensions rumble on in Senegal; PTTEP suffers another production setback. Exploration: Statoil and Total build ultra frontier exploration inventories. M&A: Encana sells Piceance tight gas assets; Centrica exits western Canada.