Wood Group Electric Submersible Pumps (ESP) is a manufacturer of downhole submersible electric motors, pumps, submersible cable and surface controls for 50/60 Hz switchboard and variable speed drive applications. ESP pumps can bolt directly to 4-, 6-, 8- and 10-inch NEMA motors, and typical flow rates range from 10 gpm upwards to 4,000 gpm. ESP motors can range from 10 Hp to 1,200 Hp at 3,600 rpm. The company also offers a line of 1,800 rpm motors up to 500 Hp. Wood Group Electric Submersible Pumps