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Stena DrillMAX I
Oil Rig Photos
No: 814   Contributor: Jhun Virtudes   Companies: Stena   Year: 2007   Country: South Korea
Stena DrillMAX I

The deepwater drillship Stena DrillMAX I undergoing final integration and outfitting works, Mar'07.
Picture added on 05 April 2008
add commentComments:
Please - someone - explain to me how this drilling rig works. It seems to have no resemblance to any conventional drill ship drilling system.

Added by Laurence Shallenberger on 22 October 2008.
This is a ram rig. On the Main there are 5 lifting cylinders, Aux 3 which when stroked out hoist up the sheave cluster and in turn the topdrive. If you picture a forklift it is the same principle. The Mast holds none of the force and is only there as a guide for the cluster. The cylinders take it all...

Added by Scott Mills on 01 June 2009.
Of all the rigs I have been on this one was the best, one very efficient drilling machine.

Added by Barry Summers on 09 September 2015.
Laurence, here is two, not to bad explanations as to how the ram rig hoisting system works.

www.actamont.tuke.sk/pdf/2006/s1/1artymiuk.pdf

www.scribd.com/doc/86974645/Ram-Rig-Drilling-Packages#scribd

It is a great system, very smooth, one very small problem until you get used to it is that when you go to pick up the system will slack off just a little bit, daunting until you get it, but it is just the way that the valves open to let the oil pass through. One other problem when these rigs first cam out was that the turn down cluster was linked together, the hydraulic and power lines were not the same diameter so one would get ahead or behind and at first a few were broken, they now make the turn down sheaves independent just like a crown block and ever thing works great.

Added by Barry Summers on 10 September 2015.
On it for over 3 years and best rig I've worked on. Take a ram rig over draw works any day

Added by Simon sharkey on 23 October 2015.
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