Integrated transmitter surveying while boring (swb)...

Details Integrated transmitter surveying while boring (swb)... Integrated transmitter surveying while boring (swb)...

E - Fixed Constructions

21

B

E21B 4/04 (2006.01) E21B 47/09 (2012.01)

Patent

CA 2537866

A bottom hole assembly for horizontal directional drilling that improves the accuracy of surveying while boring by enabling the progress of the bore to be monitored and tracked with the aid of a sonde. In one embodiment the sonde is received in the wall of a housing area of a mud motor surrounding the bearing mandrel, in another embodiment the sonde is carried in the wall of a collar surrounding the bearing mandrel housing, and in an additional embodiment the sonde is carried in an adaptor between the bearing mandrel and the bit.

Dispositif conçu pour être placé au fond d'un trou de forage directionnel horizontal et améliorer la précision du forage en surveillant et en mesurant la progression de la tête de forage au moyen d'une sonde. Dans une version du dispositif, la sonde est placée dans la paroi du boîtier d'un moteur à boue entourant le mandrin d'appui. Dans une deuxième version, la sonde est fixée à la paroi d'un collier entourant le boîtier du mandrin d'appui. Dans une troisième version, la sonde est placée dans un adaptateur entre le mandrin d'appui et la pointe de forage.

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