Wells – Sonic device – With specific downhole feature
Patent
1991-07-29
1992-07-07
Bagnell, David J.
Wells
Sonic device
With specific downhole feature
15 351, 15104062, 166193, E21B 3702
Patent
active
051274728
ABSTRACT:
An indicating ball catcher for use in a downhole drill pipe or tool string. The ball catcher comprises an upper body portion having an inlet opening smaller than any ball pumped thereto and a lower body portion. An elongated case interconnects the upper and lower body portions. A bypass is provided for allowing fluid flow around any ball caught in the apparatus and preventing the ball from being pumped therefrom. A reverse bypass may be provided so that fluid back flow is allowed without pumping the balls therefrom. In one embodiment, the apparatus can accommodate balls which have a larger cross-sectional area than an inner cross-sectional area of the case. The apparatus provides pressure indications at the surface when a ball reaches the upper body portion and when the ball enters the case.
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Freeman T. Austin
Jones Alfred H.
May, Jr. William J.
Squyres Joseph S.
Watson Brock W.
Bagnell David J.
Duzan James R.
Halliburton Company
Kennedy Neal R.
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