Full Content is available to subscribers

Subscribe/Learn More  >

The Future of Environmental Riserless Drilling: Dope Free Drill Pipe Connections Using Thread Saver Technology

[+] Author Affiliations
Catalin Teodoriu

Texas A&M University, College Station, TX

Klaus Ohla

Brush Wellman, Inc., Stuttgart, Germany

William Nielsen

Brush Wellman, Inc., Houston, TX

Paper No. OMAE2007-29459, pp. 759-767; 9 pages
  • ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 2: Structures, Safety and Reliability; Petroleum Technology Symposium
  • San Diego, California, USA, June 10–15, 2007
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4268-1 | eISBN: 0-7918-3799-8
  • Copyright © 2007 by ASME


Threaded connections which employ a metallic “thread saver” for OCTG in lieu of a thread compound are potentially valuable for the drilling industry because they offer a fast make-up process and an environmentally friendly method of making secure threaded connections without damaging threads. Using a thread saver to protect the tool joint thread is not a new idea, but new developments in materials technology combined with a better understanding of the makeup process appear to offer a new solution for compound-free drill pipe connections. The paper presents the latest tests conducted on NC38 drill pipe connections using thread savers fabricated from a CuBe alloy. Different tempers of the alloy and different thread saver surface coatings were tested. The results reported are the data from the first series of more than 60 tests that were carried out at the Technical University of Clausthal. The tests were designed to provide a characterization of the mechanical behavior of the connection process using the thread saver. Data from the tests is compared to similar data previously developed for the more-familiar processes which use thread compound. The results show the new technology is viable and may be used for heavy duty applications such as drill pipe and drill collar connections. Additionally, a short review of the thread saver history for the drilling industry is presented. Results suggest some important applications for the thread saver technology may be in riserless drilling or in scientific drilling such as the Integrated Ocean Drilling Program. A reliable “dope-less” connection technology is particularly valuable for operations where the adverse impact of environmental contamination by stray thread compounds is potentially higher than in some other operations.

Copyright © 2007 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In