Patent ID: 6935427
Filing Date: 2005-08-30
Classification: E21B

Abstract:
1. A wellbore plunger retrieving tool which comprises: a retrieving plunger body having a top end and an opposed bottom end wherein said retrieving plunger body is substantially cylindrical; said body top end having a reduced diameter neck; said body bottom end having a threaded recess; a plunger retrieving collet having a threaded male top end engageable with said threaded recess and an opposed bottom end having a plurality of fingers wherein said fingers flex to engage a downhole stuck plunger; means to deliver said retrieving plunger body from a surface downhole to said stuck plunger and to dislodge said stuck plunger by a jarring force wherein said body has a mass to descend and cause said jarring force solely by gravity; and means to deliver said retrieving plunger body and said stuck plunger from downhole to said surface by fluid pressure wherein said body has a diameter slightly less than a diameter of tubing.