Wells – Brushing – scraping – cutting or punching-type cleaners – On sucker rod
Patent
1975-06-04
1976-11-02
Leppink, James A.
Wells
Brushing, scraping, cutting or punching-type cleaners
On sucker rod
166202, E21B 3702, E21B 3300
Patent
active
039891062
ABSTRACT:
For use in oil tools which are adapted to be run travelling relatively upwardly or downwardly in drill pipe for removing mud in the drill pipe, an improvement which incorporates a swab cup which flares out to contact the side wall of the pipe for the purpose of wiping it clean. It incorporates a rubber tubular body which is clamped in a slidable position on a support mandrel. The cylindrical body is tubular and concentric with the mandrel. The swab cup flares outwardly and has an exposed, external wiping lip. The external lip is shaped and dimensioned to contact the surrounding wall. This enables it to wipe the wall clean. The lip is connected to some elongate support members, typically straps which have a sizeable width which collectively extend from the lip to an encircling sliding collar. The collar slides along the support mandrel. The range of travel of the collar is limited by a shoulder preferably incorporated in the support mandrel. Variations in diameter of the pipe to be wiped are accomodated by the flexure of the straps and the lip. The straps pull the wiping lip inwardly when an internal upset is encountered in the pipe. The apparatus can be run with the wiping lip facing upwardly to support a column of mud. It can also be run inverted to wipe mud on the side wall downwardly and avoid dripping mud on the platform floor when the drill string is being disassembled, as in pulling a drill bit.
REFERENCES:
patent: 1949498 (1934-03-01), Stone et al.
patent: 2052006 (1936-08-01), Taylor
patent: 2114373 (1938-04-01), Edwards
patent: 2274940 (1942-03-01), Stoddard
patent: 2460481 (1949-02-01), Abel
patent: 2633202 (1953-03-01), Hartsell
patent: 2739652 (1956-03-01), Hartsell
patent: 3052302 (1962-09-01), Lagucki
patent: 3294173 (1966-12-01), Hodges
patent: 3378069 (1968-04-01), Fields
patent: R20546 (1937-11-01), Otis
LandOfFree
Swab device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Swab device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Swab device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1153434