E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/00 (2006.01) E21B 17/10 (2006.01) F04B 47/00 (2006.01)
Patent
CA 2225894
A sucker rod guide bearing with a cylindrical shaft having a threaded stud at each end is connected by couplings to adjacent sucker rods. The coupling has a flat end surface which directly contacts the shoulder of the guide bearing and provides for the transmission of the guide bearing. A vaned cylindrical wheel is slidably mounted over the guide bearing connecting shaft such that the wheel remains stationary while the bearing body rotates within it. The wheel has four vanes, each having a substantially semi- circular cross-section outline. Each vane has an internal lubrication groove running the length of the wheel and the wheel is notched at each end of the groove to allow passage of fluids and extraneous matters such as sand. Preferably the wheel and vanes are made of a very hard polypthalamide resin which resists sand embedment and mechanical failure.
Bennett Jones Llp
Clintberg Carl
Jbl Petroleum Equipment Ltd.
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