Cristin-resultat-ID: 1777580
Sist endret: 12. juli 2022, 12:35
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2020

A Phenomenological Model of Percussive Drilling: Review of Experimental Evidence

Bidragsytere:
  • Xianfeng Song
  • Ole Morten Aamo
  • Pascal-Alexandre Kane og
  • Emmanuel Detournay

Bok

ARMA-CUPB Geothermal International Conference
ISBN:
  • 9781510857582

Utgiver

American Rock Mechanics Association (ARMA)
NVI-nivå 1

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2020
Antall sider: 10
ISBN:
  • 9781510857582
Open Access

Importkilder

Scopus-ID: 2-s2.0-85081080348

Klassifisering

Fagfelt (NPI)

Fagfelt: Konstruksjonsfag
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

A Phenomenological Model of Percussive Drilling: Review of Experimental Evidence

Sammendrag

In this paper, we review and analyze published experimental findings in light of the hypothesis that the dependence of bit-rock interface (BRI) pseudo-stiffness on the weight-on-bit (WOB) is the key factor behind the existence of a sweet spot in percussive drilling, i.e., there is an optimal WOB for which the rate of penetration (ROP) is maximized. It has been conjectured previously that the presence of a sweet spot could be caused either by increased wear of the bit, or reduced indexing angles, or poor cleaning of the debris. Although perhaps applicable in particular cases, these explanations are debatable, however, as a body of contradictory experimental evidence exists. Instead, motivated by experimental results, we propose that the ROP in percussive drilling is directly related to the effective impact energy delivered to the rock at each impact and that the BRI pseudo-stiffness increases with WOB. Moreover, further experimental insights reveal that given a particular WOB, an optimal BRI pseudo-stiffness could be induced to maximize the energy transmission to the rock during the first impulsive wave. This suggests that the root cause of the existence of a sweet spot in the ROP-WOB relationship indeed lies in the nature of the BRI laws.

Bidragsytere

Xianfeng Song

  • Tilknyttet:
    Forfatter
    ved Institutt for teknisk kybernetikk ved Norges teknisk-naturvitenskapelige universitet

Ole Morten Aamo

  • Tilknyttet:
    Forfatter
    ved Institutt for teknisk kybernetikk ved Norges teknisk-naturvitenskapelige universitet

Pascal-Alexandre Saidou Kane

Bidragsyterens navn vises på dette resultatet som Pascal-Alexandre Kane
  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS

Emmanuel Detournay

  • Tilknyttet:
    Forfatter
    ved University of Minnesota
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Resultatet er en del av Resultatet er en del av

ARMA-CUPB Geothermal International Conference.

Smeallie, Peter. 2020, American Rock Mechanics Association (ARMA). Vitenskapelig antologi/Konferanseserie
1 - 1 av 1