Downhole motor having a flexible connecting rod

Details Downhole motor having a flexible connecting rod Downhole motor having a flexible connecting rod

E - Fixed Constructions

21

B

E21B 4/02 (2006.01)

Patent

CA 2094195

DOWNHOLE MOTOR HAVING A FLEXIBLE CONNECTING ROD Abstract of the Disclosure A flexible connecting rod assembly (20) is disclosed in which a pair of upsets (22, 27) are secured or otherwise attached onto the ends of a flexible rod (21). Various constructions are disclosed for preventing relative rotation between the members. For example, the rod (21) is secured by shrink fitting into an upset (22). A filament wound composite rod (71) is secured by a polygonal end (72) in a polygonal cavity. There is a core (74) in the end of the filament wound composite rod (71).

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