Wellbore consolidating tool for rotary drilling applications

Details Wellbore consolidating tool for rotary drilling applications Wellbore consolidating tool for rotary drilling applications

E - Fixed Constructions

21

B

E21B 33/138 (2006.01) E21B 17/10 (2006.01) E21B 21/00 (2006.01)

Patent

CA 2510461

A subpart (430) of a drill string (211) is described having an outer circumferential surface which is contoured and adapted to engage the wall of the borehole with a small angle of attack while exerting during rotary drilling operations an compacting pressure on mud cake and/or cuttings present in the annulus between the drill string and the borehole.

L'invention concerne une sous-partie (430) d'un train de tige (211) présentant une surface circonférentielle extérieure qui est profilée et conçue pour s'enclencher dans la paroi du forage sur un petit angle d'attaque, tout en exerçant, lors des opérations de forage rotatif, une pression de compactage sur le gâteau de boue et/ou sur des découpages présents dans l'annulaire compris entre le train de tige et le forage.

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