Even in slump, U.S. oilfield firms hesitate over post-sanctions Iran By: Reuters: Company News January 20, 2016 at 14:25 PM EST * Sanctions lifted, OPEC member Iran pushes oil and gas revival U.S. firms expected to wait and see how nuclear deal plays out Read More >> Related Stocks: Cameron International Enersis Americas S.A. American ADR Halliburton Co Natl Oilwell Varco Schlumberger Ltd Weatherford International Ltd