Adjustable angle drive connection for a down hole drilling...

Details Adjustable angle drive connection for a down hole drilling... Adjustable angle drive connection for a down hole drilling...

E - Fixed Constructions

21

B

E21B 17/03 (2006.01) E21B 7/08 (2006.01) E21B 21/12 (2006.01)

Patent

CA 2632634

A drive connection for a down hole drilling motor includes a tubular outer housing with an inner mandrel. The outer housing has a motor end, a bit end and defines an interior bore. An angular offset is provided toward the bit end of the outer housing. The inner mandrel, positioned within the interior bore of the outer housing, includes a motor end section, a bit end section and an intermediate section connecting the motor end section and the bit end section. The intermediate section has an upper articulating engagement that is coupled to rotate with the motor end section and a lower articulating engagement that is coupled to rotate with the bit end section. The motor end section, intermediate section and bit end section rotate together, with the upper articulating engagement and the lower articulating engagement accommodating rotation that is offset due to the angular offset.

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