MarketWatch | Why oil prices scored their biggest one-day rally of 2017 MarketWatch Traders have taken these developments as bullish for prices, though many do point out that the Saudis normally lower exports at this time of year because of stronger domestic demand for oil, and Nigeria's output would still have to rise from it's ... US crude climbs 3.3% to 7-week closing high of $47.89 after Saudis vow to cut exports Saudi Summer: Why Crude Oil is Rising Oil rallies 3 per cent as US shale shows signs of slowdown |