Press Esc to close



For full content view: Log in Now!

  • Improved offline tree deployment, new tongs

    Increased global drilling activities have led to a surge in new vessel construction. This has fostered an emphasis on increased efficiency and flat time reduction, especially in the newbuild sector where more activities are being performed offline. Designed by ODS International, Inc., the Offline Tree Deployment System (OTDS) provides a dedicated means of running subsea trees, which is completely independent of all well center activities. This deployment system significantly reduces the tree-running times, Fig. 1. The system is based on a robust set of cantilever beams and A-frame, which enable the OTDS to be scaled to meet any tree-handling needs. The beams contain skid rails built onto their inside faces to accommodate a hydraulically driven tree skid. These beams carry a Christmas tree, stored offline, to a position below the electrical winch system, mounted on top of the A-frame. The winch lifts the tree off the base, allowing the tree skid to return to its offline position.

This area of the site is restricted. In order to gain access, please either Log In, or subscribe to World Oil.

Two options are available to you for creating an account.

1. Get a Free Trial Subscription to World Oil Magazine and gain immediate access to select content on World Oil Online.

Start a Free Trial Subscription and gain immediate access to the complete current issue of World Oil Magazine. Plus, you’ll receive 3 upcoming issues of World Oil Magazine in print or digital format.* You also receive access to the Energy Events Calendar, Industry Statistics and WO Wire’s news and industry coverage.

Free Trial

2. Purchase a subscription to World Oil magazine and gain immediate and complete access to World Oil Online. As a Total Access subscriber you will have access to all areas of the site available to registered users and free subscribers as well as having access to such premium content areas as:

  • The Archives section containing over ten years of complete magazine archives,
  • The WO DataHub's engineering tables and directories,
  • The World Oil annual forecasts, including past predictions,
  • Select World Oil technical handbooks,
  • And much, much more!


Physical copies of this content may be available for purchase. Visit the Reprints & Back Issues section.

If you are already a paid subscriber and do not have access, please email



Engineering Data Tables

World Oil's specialized upstream Engineering Data Tables featuring the Drill Bit Classifier, Tubing Tables and more. Get Total Access today.


2013 Fracturing Technology

2013 Fracturing Technology