Zero-surface-charge-controlled drilling for enhanced penetration and extended bit life
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Zero-surface-charge-controlled drilling for enhanced penetration and extended bit life

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Published by U.S. Dept. of the Interior, Bureau of Mines in Pittsburgh, PA .
Written in English

Subjects:

  • Drilling muds -- Testing.,
  • Rock-drills.,
  • Directional drilling.

Book details:

Edition Notes

Bibliography: p. 18.

Statementby John E. Pahlman ... [et al.].
SeriesReport of investigations ;, 9227, Report of investigations (United States. Bureau of Mines) ;, 9227.
ContributionsPahlman, J. E.
Classifications
LC ClassificationsTN23 .U43 no. 9227, TN279 .U43 no. 9227
The Physical Object
Pagination18 p. :
Number of Pages18
ID Numbers
Open LibraryOL2147622M
LC Control Number88600073

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Penetration and bit life improvements obtained with zsc concentration solutions ranged from 88 and 56 pct, respectively, to over pct and over pct, respectively, for the additives tested. Polyethylene oxide (peo) was found to be the best additive for zsc-controlled drilling because a continuous range of peo solution concentrations. Zero-surface-charge-controlled drilling for enhanced penetration and extended bit life / By Pamela J. Watson, Patrick A. Tuzinski, William H. Engelmann and J. E. (John E.) Pahlman Abstract. USA1 US13/, USA USA1 US A1 US A1 US A1 US A US A US A US ACited by: 5.   The equations for penetration rate and bit life are incorporated into a drilling cost equation and the cost function is minimized over the control variables. Al-Betairi et al. () introduced a model using multiple regression analysis to predict the effects of various drilling parameters on ROP. They used the model to estimate optimum.

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