Halliburton says a majority of the more than 800 employees being laid off at its suburban Oklahoma City office have been offered a chance to relocate to its facility in Duncan, Oklahoma. The Houston-based company said in a statement Tuesday that it is moving most of its operations from El Reno to Duncan, about 70 miles southwest of Oklahoma City as part of a move to consolidate operations. Tuesday’s statement didn’t say how many employees were offered the opportunity to relocate.