DP drillships target deepwater operations

After a 10-year construction hiatus, contractors began delivering a series of next-generation drillships last year, fulfilling a need for technically advanced, deepwater drilling rigs.Each of the 16 new drillships (Table 1), the last to be delivered in December 2000, will use a combination of dynamic-positioning (DP), riser tensioning, and motion-compensating systems to neutralize the effects of wind, waves, and currents.This conclusion of a two-part series (Part 1, OGJ, May 3, 1999, p. 69) focuses on technologies that: Keep the rig from drifting away from the well center Avoid riser buckling Stabilize the drillstring from up-and-down movements.Dynamic positioningOffshore drilling contrac...

Why Register?

Non-subscribers can only view whitepapers by providing name, home and email address, phone number and other information and comment on/rate articles.

Why Subscribe?

Oil & Gas Journal subscribers with login credentials can access these premium features of OGJ Online:

  • Current Issue – an html version of the current week's issue of Oil & Gas Journal.
  • Past Issues – An Electronic OGJ Archive. A keyword-searchable archive of all issues of Oil & Gas Journal dating back to 1990; also searchable by issue date.
  • Market Journal – a weekly round-up of the oil and gas markets, with observations from leading analysts.
  • Editor's Perspective – a short article of insight and opinion by the Editor of Oil & Gas Journal.
  • OGJ Industry Stats – quick access to current industry statistics from Oil & Gas Journal.
  • OGJ Survey Downloads - quick access to exclusive reports from Oil & Gas Journal.


Subscriber Help or Subscribe

Oil & Gas Journal Subscribers: Have your subscription number (from the mailing label on the cover of your Oil & Gas Journal) and e-mail address ready to set up your online account through Customer Service Assistant.

If you're not an Oil & Gas Journal subscriber, start a subscription and gain access to the subscriber areas of OGJ Online now.

Stay Connected