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DRILL PIPE AND CORRESPONDING DRILL FITTING

Abstract : A drillpipe for a drill stem to drill a hole. The drill stem includes a drill string and a bottom hole assembly. The drillpipe includes a first end having a first inertia, a second end having a second inertia, a first intermediate zone adjacent to the first end, a second intermediate zone adjacent to the second end, and a central substantially tubular zone with an external diameter smaller than the maximum external diameter of at least the first or the second end. A casing is fixed on the pipe over a portion of the external surface thereof, at least one physical parameter sensor is disposed in the casing, and at least one data transmission/storage mechanism is connected to the sensor output, the casing being disposed at a distance from the first and second ends, the casing being integral with the central zone at a distance from the first and second intermediate zones and having a smaller inertia than the first and second inertias.
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https://hal-mines-paristech.archives-ouvertes.fr/hal-00749154
Contributor : Hedi Sellami <>
Submitted on : Tuesday, November 6, 2012 - 5:48:49 PM
Last modification on : Wednesday, October 14, 2020 - 3:52:21 AM

Identifiers

  • HAL Id : hal-00749154, version 1

Citation

Jean Boulet, Stéphane Menand. DRILL PIPE AND CORRESPONDING DRILL FITTING. Patent n° : US 2012/0199400 A1. 2012, pp.21. ⟨hal-00749154⟩

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