Which type of cable shall be used for hoisting purposes in drilling operations?

• A. Non-rotating
• B. Rotating
• C. Steel wire
• D. Fiber optic

Answer: (A)

When lifting equipment in drilling operations, controlling twist in the hoisting rope is essential. A non-rotating cable is designed to resist turning around its own axis under tension, so it doesn’t impart rotation to the load as it winds on and off the drum. This minimizes rope twist, reduces fatigue and wear on the rope and sheaves, and keeps the lifted load stable and predictable—crucial for safe hoisting in harsh drilling environments.

Rotating rope would twist under load and could cause the load to spin or apply torsional stress to the hoisting system, increasing wear and the risk of accidents. Fiber optic cables aren’t suitable for heavy hoisting because they aren’t built to withstand the high tensile loads and dynamic forces involved. Steel wire rope is the common material for hoisting, but for this application the important property is being non-rotating to prevent unwanted twists.