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 7/04 (2006.01) E21B 7/06 (2006.01) E21B 25/16 (2006.01) E21B 47/01 (2006.01) E21B 47/02 (2006.01) E21B 47/024 (2006.01)

Patent

CA 2395753

A bottom hole assembly (10) 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 (108). In one embodiment the sonde (108) is received in the wall of a housing area (41) of a mud motor (12) surrounding the bearing mandrel (18), in another embodiment the sonde (108) is carried in the wall of a collar (126) surrounding the bearing mandrel housing (18), and in an additional embodiment the sonde (108) is carried in an adapter (131) between the bearing mandrel (18) and the bit (11).

Ensemble pour fond de sondage (10) pour forage directionnel horizontal améliorant la précision du contrôle en cours de forage, de façon que la progression du sondage soit contrôlée et guidée au moyen d'une sonde (108). Selon une forme d'exécution, la sonde (108) est reçue dans la paroi d'une zone d'enveloppe (41) d'un moteur à boue (12) entourant le mandrin porteur (18); selon une autre forme d'exécution, la sonde (108) est portée dans la paroi d'un collier (126) entourant l'enveloppe du mandrin porteur (18); selon une autre variante, la sonde (108) est portée dans un adaptateur (131) entre le mandrin porteur (18) et le trépan (11).

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