DISCONNECTOR Russian patent published in 2011 - IPC E21B17/06 

FIELD: oil and gas production.

SUBSTANCE: disconnector comprises a body assembly consisting of a top and a bottom connected by torque and thrust load transfer units. The torque transfer unit represents a splined retention pin, while the thrust load transfer unit is a left-hand thread. The retention pin accommodates two bushings splined on an external surface, seated in combined slots at the top and bottom of the body. The cross section of the splines of the upper bushing of the retention pin exceeds the cross section of the slots on an internal surface at the bottom of the body. In a working position, the lower bushing of the retention pin partially overlaps the top of the body throughout the height and is rigidly connected to the bottom of the body. There is provided a version of splines of the upper bushing of the retainer of the width or thickness exceeding the width or depth of the slots of the bottom of the case.

EFFECT: improved reliability of dicconnector actuation and enhanced performance.

5 cl, 5 dwg