Kertong wuxuu si adag u cadeynayaa inaan kaliya soo saarno shaashadaha beddelka ah laakiin aan ahayn kuwa asalka ah.Derrock, FLC, Hyperpool, PWP, Shaashadda Wave waa calaamadaha Shirkadda Derrock.NOV Brandt, VSM, Cobra, King Cobra, D380, D285P iyo LCM waa calaamadaha Varco I/P, Inc. MI SWACO, ALS-2, MD-2, MD-3, MEERKAT PT, ...
Akhri wax dheeraad ah