COSL can provide a wide variety of engineering designs and onsite operation with mud motor and RSS, and other down-hole tools, in addition to offering directional and trajectory measuring services via electronic single/multi-shot and gyroscope. The operation areas include Offshore China and the Southeast Asia. The key clients are CNOOC, Sinopec, China United Coalbed Methane Co. Ltd., PNOC, Conoco-Phillips and Anadarko. COSL proprietary RSS, WELLEADER®, has proven excellent wellbore trajectory-control performance, helping customers effectively improve overall drilling efficiency while significantly reducing drilling costs.