Drilling & Production Systems manufactures pressure control equipment and provides aftermarket services for worldwide onshore, offshore and subsea oil & gas drilling and production operations. Also provides system design and project management services for worldwide offshore oil and gas completion operations. Through their acquisition of LeTourneau Technologies drilling, power systems, and offshore divisions, they also manufacture drilling equipment including top drives, drawworks, rotary tables, and mud pumps, as well as designs and components for jackup rigs.