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METHOD AND DEVICE FOR ROTARY WELL DRILLING

Abstract : The invention concerns a method which consists in: introducing into a pre-drilled portion of a well (16) a drilling system comprising a drilling bit (11) assembled with tubular lining elements (15), means for measuring the inclination and azimuth direction of said pre-drilled part of the well, means for rotary friction (26, 27) against the wall of said pre-drilled part and controlled means capable of modifying the friction coefficient of said friction means against the wall; measuring the azimuth direction of the pre-drilled part of the well (16); and varying the friction coefficient of said friction means (26, 27) sufficiently to influence the azimuth direction of the next well portion to be drilled.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00749139
Contributor : Hedi Sellami <>
Submitted on : Tuesday, November 6, 2012 - 5:13:15 PM
Last modification on : Thursday, September 24, 2020 - 4:34:08 PM

Identifiers

  • HAL Id : hal-00749139, version 1

Citation

Jean-Michel Genevois, Hedi Sellami, Christophe Simon. METHOD AND DEVICE FOR ROTARY WELL DRILLING. Canada, Patent n° : CA 2384281. 2009, pp.15. ⟨hal-00749139⟩

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