Menomonee Falls, USA, May 2015 - High-pressure hydraulics specialist, Enerpac, with its official distributor Al Masaood Trading, Dubai, has supplied Lamprell, a leading provider of diversified fabrication, engineering and contracting services to the onshore and offshore energy industries, with an EVO-Series Synchronous Lifting System to weigh a newly completed jack-up rig.

The Enerpac multifunctional synchronous lifting EVO system monitors and manages lifting, lowering, weighing, alignment and load transfer procedures of non-uniform distributed heavy loads. The jack up rig cantilever and drill floor substructure weighing system comprised a 12-point synchronous EVO weighing system, two 600 tonne hydraulic jacks, four 200 tonne hydraulic jacks and accessories. Al Masaood Trading supplied the EVO system to Lamprell within four weeks to meet tight project timescales.

A key benefit of the EVO weighing system is its compactness. Space restrictions under the jack-up rig prevented the use of other weighing systems without costly rework to the load structure. To make the Enerpac jack design even more compact the weighing system used calibrated high pressure transducers in place of load cells.

Enerpac's synchronous lifting technology monitored the position and load of each jack-up rig lifting position, comparing it with a global datum and adjusting to the desired target position - movements are safely and efficiently managed, within permissible load and synchronous stroke tolerance parameters, preset to suit the project.

During the jack-up cantilever and drill floor substructure weighing, the accuracy of the lifting synchronization was such that the difference in plunger stroke of each of the cylinder was less than 1mm, enabling an unprecedented level of weighing accuracy for this type of project.

Maarten Franken, Global Marketing Communications. Email: maarten.franken@enerpac.com