Dual Drawworks Provide Operational Redundancy and Reduce Cut and Slip Costs

摘要

Dual drawworks is a new concept based on the AC geardrivenActive Heave Drawworks. If one of the twoindependent units fails, the other can still run the block andprovide redundancy. Dual drawworks also improves rigefficiency due to higher capacities and savings of cut andslip operations.