Claxton Engineering Services Ltd., developed a new conductor cementing support system (CCSS) that has typically saved 12 - 18 hours of rig time per conductor waiting for cement to cure.
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| Claxton's conductor cementing support system. From Claxton. |
According to Claxton, it has recently become increasingly common for operators to install a jacket and batch set the platform conductors so that the topsides can be installed at a later date. The operator brings a rig over the jacket and uses it to run a conductor and then to hold the conductor in place while the cement cures, a process that typically takes 12 - 18 hours.
The Claxton CCSS secures the conductor with a hydraulic jack-and-clamp mechanism that holds the weight of the conductor while the cement cures. This means that the rig no longer has to hold each conductor, and can therefore move to the next slot and begin running another conductor.
“The new system has a compact design and can be repositioned easily without a crane,” says Dannie Claxton, Claxton technical director. “In addition, it offers schedule flexibility because it splits in half, thereby enabling operators to run the conductor before, or after, the CCSS is in place.
Claxton says its CCSS has already been used successfully in the field on projects for two major North Sea operators.
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