E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
64/21.3
E21B 17/042 (2006.01) E21B 17/06 (2006.01)
Patent
CA 1298715
"SHEAR COUPLING ASSEMBLY" ABSTRACT OF THE DISCLOSURE A shear coupling assembly is provided for connecting the rod of a downhole pump with the terminal member of a sucker rod string. The assembly involves two parts or coupling members which are threadably connected end to end during normal operations but which can relatively easily be parted if the pump becomes stuck, by pulling up on the still free sucker rod string. The first coupling member has a pin end incorporating an externally threaded head and a shear neck, of relatively reduced diameter, joining the head to the main body of the coupling member. The head has an axial, internally threaded counterbore, so that a tensioning tool may be screwed thereinto, the other end of the coupling member may be held, and the tool may be pulled to place the shear neck in tension. The second coupling member is a sleeve forming an axial bore therethrough. The second coupling member is adapted to thread onto the head of the first coupling member. To prepare the assembly for use, the tensioning tool is inserted, the sleeve is slipped over the tool, the tool is pulled to place the neck in tension, and the sleeve is threaded along the head until it abuts the main body of the first coupling member. The tensioning tool is then removed. The sleeve functions to hold the shear neck in a tensioned state. The tensioned neck is better able to sustain cyclic compressive loading in the course of reciprocation of the sucker rod string.
575208
Mann Jay Stanley
Wolodko Benny Boris
Highland/corod Inc.
Johnson Ernest Peter
LandOfFree
Shear coupling assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shear coupling assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shear coupling assembly will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1193893