Exploration boring method and use thereof

E - Fixed Constructions – 21 – B

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E21B 36/04 (2006.01) E21B 4/18 (2006.01) E21B 7/00 (2006.01) E21B 7/20 (2006.01) E21B 21/00 (2006.01) E21B 33/138 (2006.01)

Patent

CA 1032154

PRECIS DE LA DIVULGATION L'invention se rapporte à une méthode de forage d'exploration et sa mise en oeuvre, caractérisée en ce que l'on réalise la protection du trou foré contre les éboulements du terrain et les venues d'eau, que l'on moule, simultanément durant le forage, du tubage sur les parois du trou foré, immédiatement au dessus de l'outil de forage. Préférablement, une gaine est d'abord moulée sur les parois du trou foré et le tubage est, par la suite, moulé sur cette gaine.

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