Shear Coupling (Or Shear Tool), A Straight Line Pulls Safety Joint Release That Provides A Means Of Disconnecting The Sucker Rod String From The Pump Below The Too

Working principle

Shear coupling is the setting of a shear stress section on the basis of a regular coupling, which is smaller in size than the main section and is equipped with shear hole to provide a pre breaking point during shear tension. During normal operation, the shear coupling is installed at a set position on the sucker rod to connect the sucker rod.When the sucker rod is stuck and needs to be shortened, lift the sucker rod at the wellhead for stretching. When the stretching force reaches the set shear force of the shear coupling, the shear coupling is shortened and the sucker rod is disconnected from the shear coupling.ift the disconnected upper sucker rod out of the wellhead and use special tools to salvage the remaining down hole equipment.

Technical Parameters