Field research in oil well drilling has shown the advantage of adding high pressure jet nozzles to rock drilling bits. Some additional advantage has been found by adding an abrasive to the fluid and this has also been tested in the field, but several problems were encountered which stopped the project. The research described examines the potential benefits of adding sand as an abrasive to water jets in order to improve the penetration rate in granite. An improvement in performance is achieved; however, when the fluid velocity exceeds 1200 ft s-1 it is shown that cavitating the jet flow is a more effective means of improving jet cutting ability. The reasons for this are discussed with the aid of thin section photomicrographs of the rock targets after testing. (a) (TRRL)

  • Availability:
  • Corporate Authors:

    Elsevier Science S.A.

    P.O. Box 564
    CH-1001 Lausanne 1,   Switzerland 
  • Authors:
    • El-saie, A A
  • Publication Date: 1980-4

Media Info

  • Features: Figures; Photos; References; Tables;
  • Pagination: p. 229-236
  • Serial:
    • Wear
    • Volume: 60
    • Issue Number: 1
    • Publisher: Elsevier Science S.A.
    • ISSN: 0043-1648

Subject/Index Terms

Filing Info

  • Accession Number: 00322501
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD, TRIS
  • Created Date: Apr 15 1981 12:00AM