Reuters | US crude settles up 27 cents at $45.69, scores first weekly gain in four weeks CNBC A stronger dollar makes oil, which is priced in the greenback, more expensive to buyers using other currencies. Oilfield services firm Baker Hughes reported the largest weekly rise in its count of oil rigs operating in U.S. fields since a recovery ... Oil down for day on strong dollar, up for week on OPEC hope Oil Prices Waver; Market Edgy Ahead of OPEC Meeting Oil falls, but looks set to break streak of weekly losses |