Equipment Description

NOV Electric AHC winch system, 450 Te SWL in Drawworks W.I. Rig Mode, 250 Te SWL in Subsea Mode with 3000 m of 3" (76 mm) wire rope. Unused.

Electric Hoisting Winch suitable for Semi-Submersible Drilling Rig / Well Intervention Vessel and Subsea AHC Winch (Dual Purpose)

Mode 1:
450 Te SWL Single Layer Winch (SLW) with Active Heave Compensation (AHC)
- 4 each 52 mm x 140 m wire rope falls to Crown Cluster, 71 m/min hoisting Speed
- drillpipe or landing string is used for hoisting of equipment to sea bottom

Mode 2:
250 Te SWL Subsea Winch, 120 to 240 m/min hoisting speed
- 1 each 76 mm x 3000 m wire rope is used for hoisting to sea bottom

Driven by:
- 24 each 350 kW Oswald motors (MFS 25.50-8WI-EX)
- AC Drives: Siemens - Sinamics S120 VFD
- Gearbox: Brevini - SLS3001DC/9025929/7,36/FL7,5.18C/M- A.D.MFS25.50-8WI-B3

Power Regeneration in CT/AHC: 3 of NOV KERS (Flywheel System)
Area Classification - Winch: Atex Ex Zone II
Design Temperature (ambient): -20 to +40 °C
Certifying authority: DNV
Design standards: DNV OS-E101 Drilling Plant 2009

Winch System is complete with AC drive system, control system and 2 each 5500 kVA 6600V - 690/690V transformers

CLICK HERE for more information and pictures on our website.

Equipment Gallery