Patent ID: 6152219
Filing Date: 2000-11-28
Classification: E21B

Abstract:
A downhole pulling tool for retrieving a downhole device from a wellbore comprising:a mandrel;a sleeve slidably disposed about the mandrel, the sleeve moveable in a first direction from a first position to a second position relative to the mandrel and moveable in a second direction from the second position to a third position relative to the mandrel;at least one engagement member partially disposed between the mandrel and the sleeve, the at least one engagement member radially extendable between a retracted configuration when the sleeve is in the first and third positions and an engagement configuration when the sleeve is in the second position;at least one shearable member radially extending between the mandrel and the sleeve, the at least one shearable member allowing free movement of the sleeve in a first direction from the first position to the second position, the at least one shearable member releasably limiting the movement of the sleeve in the second direction until a predetermined force shears the at least one shearable member, thereby allowing the sleeve to move to the third position and;a cross pin radially extending between the mandrel and the sleeve, the cross pin limiting the relative movement of the sleeve in the second direction relative to the mandrel when the sleeve is moved to the third position relative to the mandrel.