SemGroup Corp. partnership Rose Rock Midstream LP agreed to buy Chesapeake Energy Corp.‘s crude oil trucking assets in Texas, Oklahoma and Ohio for an undisclosed sum. The acquisition includes 124 trucks, 122 trailers and other equipment, as well as term transportation agreements at market rates with Chesapeake Energy Marketing Inc. About 200 Chesapeake employees are to be offered positions with Rose Rock, more than doubling its workforce. Once completed, Rose Rock would have a fleet with more than 200 trucks and about 350 employees. Most of Rose Rock’s assets would be located in or connected to the Cushing, OK, marketing hub.