In the middle of may 2011, company completed successfully in Rotary Steerable System project in Dagang oilfield . TDC cooperates with Halliburton for the rotary steerable and LWD test service and succeed, got the good affirmation of the customer. TDC is responsible for well on second and third spud in, accumulative total footage more than 500 m, the total time consuming less than four days. Preparation is perfect, operation is excellent, construction, achieved a good success in a shot time, save time and money for customer, and obtained customer‘s praise. It is also a signal of the company in drilling technology has cached up with world class