Wells – With jar means for releasing stuck part
Patent
1996-03-05
1999-03-02
Neuder, William P.
Wells
With jar means for releasing stuck part
175299, E21B 31107
Patent
active
058758429
ABSTRACT:
A multi-impact jarring apparatus for retrieving objects stuck within a well bore comprises (1) an operating mandrel reciprocatively mounted within an upper housing attached to a fishing operating string, the mandrel acting as a hammer against the housing for creating a series of successive upwardly directed impact forces, (2) a releasable spring compressible between the mandrel and an upper portion of the housing and responsive to tension applied to the operating string, (3) releasable latching means for releasing the mandrel from the upper portion of the housing when the latching means is moved past a preset release position. The movement of the mandrel responsive to tensional force of the operating string allows for sudden release of the release spring and causes sudden upward movement of the mandrel resulting in impact of the mandrel against the upper portion of the housing and in immediate reposition of the latching means to reconnect the mandrel and a bottom portion of the upper housing body. Continued movement of the mandrel responsive to tensional force in the operating string repeats the impact and movement can be continued through a preset number of impact cycles. A second mandrel reciprocatively mounted within a lower housing can achieve successive downward impacts through a preset number of impact cycles.
REFERENCES:
patent: 4463815 (1984-08-01), Jurgens et al.
patent: 4665998 (1987-05-01), Burton
patent: 5103903 (1992-04-01), Marks, II
patent: 5139086 (1992-08-01), Griffith, Jr.
patent: 5156211 (1992-10-01), Wyatt
patent: 5170843 (1992-12-01), Taylor
patent: 5330018 (1994-07-01), Griffith
Carbo Michael D.
Neuder William P.
LandOfFree
Multi-impact jarring apparatus and method for using same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multi-impact jarring apparatus and method for using same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-impact jarring apparatus and method for using same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-414194