Shear coupling for oil well pump strings

Details Shear coupling for oil well pump strings Shear coupling for oil well pump strings

E - Fixed Constructions

21

B

E21B 17/02 (2006.01) F16B 31/02 (2006.01)

Patent

CA 2425091

A single-part hollow shear coupling is provided for connecting a downhole pump with the terminal member of a sucker rod string. The coupling is threadably connected to the sucker rod and the pump during normal operations, but can relatively easily be parted, if the pump becomes stuck, by pulling up on the still free sucker rod string. One end of the coupling has a pin incorporating an externally threaded head and the other end has an internally threaded cavity. A cylindrical, hollow body joining both ends is weakened by the groove, providing a stress concentration point, where the coupling will part, when exposed to predetermined desired load. The weakened part of the shear coupling is protected with a special coating, preventing corrosion and abrasion.

Affiliated with

Also associated with

Rating

Shear coupling for oil well pump strings 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 for oil well pump strings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shear coupling for oil well pump strings will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1837069