Press Esc to close



For full content view: Log in Now!

  • North Sea testing demonstrates the benefits of multi-element swellables

    G. McRobb and J. Nijhof

    Valhall Field, operated by BP Norge AS in the North Sea, is undergoing a massive redevelopment that will allow the field to keep producing until about 2050. In total, more than $2.3 billion is expected to be invested in upgrading the field. The operator is investigating strategies to protect the field against damage associated with waterflood and to minimize costs in its next phase of production. The reservoir management plan for the Valhall redevelopment relies on multi-zone water injection and management of offset water in producing wells. It was recognized that cementing the reservoir liner could prevent isolation between the injection points or make the pre-perforated sliding sleeves inoperable, due to cement fallout. Swellable packers were identified as a potential solution for zonal isolation that would limit the risk of damaging the perforation valves and reduce operational risk when running and cementing the reservoir liner.

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