E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 10/22 (2006.01) E21B 10/25 (2006.01)
Patent
CA 2682604
A thrust washer located between the thrust surfaces of the head and the cone of a drill bit allows for radial rotation between the cone, thrust washer, and head during drilling operations. The thrust washer also accommodates axial rotation between the cone and the head. The mating thrust surfaces between the thrust washer and the head are contoured to allow the thrust washer to rotate axially with the cone, and provide increased bearing contact between the thrust washer and the cone.
Le fait de placer une rondelle de butée entre les surfaces de poussée de la tête et du trépan d'un outil de forage permet d'assurer une rotation radiale entre le trépan, la rondelle de butée et la tête durant l'activité. Ladite rondelle permet aussi d'assurer une rotation axiale entre le trépan et la tête. Les surfaces de poussée qui s'adaptent, entre la rondelle en question et la tête sont profilées, ce qui permet à la rondelle considérée d'avoir une rotation axiale avec le trépan et d'augmenter le contact porteur entre cette rondelle et le trépan.
Anton Zahradnik
Dick Aaron
Koltermann Terry
Nguyen Don
Shu Scott
Baker Hughes Incorporated
Sim & Mcburney
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