July 2019

Friction reducing flotation collar/optimal placement increases efficiency running casing in long laterals

A new ultra-reach flotation collar, equipped with a second-generation buoyancy barrier, reduces friction in extended reach laterals and lowers costs associated with running casing to the required target depth.
Claire Kennedy Platt / National Oilwell Varco William Tait / National Oilwell Varco Reza Rastegar / National Oilwell Varco

Please Log IN view this article.

Not yet a subscriber? For just $149/year, you can claim unlimited access to World Oil's content.*

Each subscription includes: 

  • Unlimited access to all content on WorldOil.com
  • Exclusive drilling forecast data, by state, country and region
  • State-by-state results from the survey of U.S. operators
  • Updated producing oil and gas well figures, by state
  • Exclusive access to World Oil's conference presentations
  • Proprietary data tables covering casing, tubing, drill bits and fluids
  • Exclusive World Oil maps (published three times per year)
  • Daily coverage of industry news and developments\
  • Industry whitepapers, webcasts, videos and supplements.

Start your subscription today! 



*Access will be granted the next business day.
Connect with World Oil
Connect with World Oil, the upstream industry's most trusted source of forecast data, industry trends, and insights into operational and technological advances.