Stabbing and Unstabbing Unit for RCD

General information

The Stabbing & Un-stabbing Unit features a trolley with clamp to stab or un-stab the sealing tool over the drill pipe which is held by simple V-clamps- in either rends pending stabbing or un-stabbing. All clamps are manual operated and closed and opened.

The unit is built in a modified offshore transport basket according to DNVGL-ST-E271:2017. The basket has customized length and a low shoulder v-entry in one end with lifting pad eyes at top corners and lifting sling. The v-entry allow the tools to be stabbed onto or un-stabbed on longer lengths of drill pipes by sticking one end out.

The trolley can be run at a set speed. Low speed is giving good control and possibilities for positioning of the trolley and maintain safety while driving and performing. However, this is not a proportional speed increase/decrease function.

The one-speed solution is obtained by using normal electrical motors without any frequency converters and is controlled by normal motor starters and contactors.

A control panel is located “on the top railing” in one end of the basket while the main electrical enclosure is located inside the basket facing one short end. A simple hatch or cover allows easy access to electrical enclosure from outside for service and inspections.

Control system/starter cabinet in standard Ex d/e cabinet. Control panel with the following functions:

• Emergency stop button with protection cover.
• Activate/Enable button (two hands safety operation).
• Push buttons for running left and right.
• Visual indicator lights on approx. 80%, 95% and 100% running load

Emergency stop button with protection cover in basket opposite end of control panel. End stops on end travels.

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Features & Benefits

• Designed to handle drill pipes Range 1, 2 and 3, and using the sealing tool Marine Sentry™ RCD 3000
• DP size 5 and 5.5”
• V-type design slips encompassing multiple pipe sizes without needing change
• Rack and pinion drive for the trolley