Fluted nozzles increase penetration rates, extend bit life

J. Ed Akin Rice University Houston N. Roland Dove, Stephen K. Smith Vortexx Group Inc. Bellaire, Tex. Lee M. Smith Security DBS Houston Drillers can easily orient this fluted nozzle by aligning the arrow in the desired direction, using a common spark-plug wrench. For PDC bits, the arrow is typically oriented parallel to the nearest blade (Fig. 3). New developments in the geometric design of fluted drill-bit nozzles increase penetration rates while extending bit life. This design retains the noncircular, interior-transition surface of prior nozzles, including a fluted channel and sharp interior edges. However, the nozzles now terminate in a...

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