Citi Advises Profit-Taking In Oilfield Service Sector By: Benzinga via Benzinga May 11, 2015 at 15:01 PM EDT The recent three-month rally in crude oil prices could spur production and reignite over-supply worries, an analyst said ... Read More >> Related Stocks: Helmerich & Payne Natl Oilwell Varco Patterson-Uti Energy RPC Inc Weatherford International Ltd