General Information
Canrig Drilling Technology Ltd. 3-9
Carrier Lift Winch
The carrier lift winch is located under the ramp (Figure 3-8). The carrier lift winch pulls the carrier up the
ramp and over the drilling floor to mouse hole. This allows tubulars to be delivered to or removed from the
drilling floor.
Cables from the winch drum travel up the underside of the ramp over two guide sheaves and down the
front side of the ramp in the protective slots. The cables pass under the cable guide block on the front of
the carrier, and attach to the cable attachment block located approximately 2/3 down the length of the
carrier.
The carrier has a lift arm mounted on its underside. The lift arm travels inside the Catwalk as the carrier
gets pulled up the ramp. When the lift arm enters a pocket, it pivots to lift the back end of the carrier out of
the Catwalk. This allows the carrier to extend across the drilling floor to mouse hole at a shallow
presentation angle.
The carrier lift winch is operated from the control console or from the wireless terminal. The speed of the
carrier travel is PLC-controlled throughout its range, preventing damage to the carrier or lift arm during
operation.
Figure 3-8: Carrier Lift Winch Located Under Ramp
Warning!
The cables are designed to work together.
Inspect the cables frequently, and
replace them as required. DO NOT operate the
winch with only one cable.
Carrier Lift
Winch
To Next Page
Loading...