Method for controlling the head of a drilling or...

Details Method for controlling the head of a drilling or... Method for controlling the head of a drilling or...

E - Fixed Constructions

21

B

E21B 49/00 (2006.01) E21B 10/60 (2006.01) E21B 10/62 (2006.01) E21B 17/00 (2006.01) E21B 17/04 (2006.01) E21B 44/00 (2006.01) E21B 47/01 (2006.01) E21B 47/024 (2006.01) G01V 3/20 (2006.01) G01V 3/24 (2006.01)

Patent

CA 2167676

Electrodes (2) are provided in a drill bit (1), or alternatively, in a coring bit, to measure variations in formation resistivity (R) surrounding an earth borehole. Three orthogonal accelerometers (4A, 4B, 4C) are also provided in the drill bit (1), or in the coring bit, to monitor the dynamic behavior of the bit (1) as functions of radial, axial and tangential accelerations.

Des électrodes (2) sont ménagées dans un outil de forage (1), ou dans une autre variante, dans un outil de carottage, afin de mesurer les variations de la résistance (R) de la formation entourant un trou de forage dans la terre. Trois accéléromètres orthogonaux (4A, 4B, 4C) sont également montés dans l'outil de forage (1), ou dans l'outil de carottage, afin de surveiller le comportement dynamique de l'outil de forage (1) en fonction des accélérations radiales, axiales et tangentielles.

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