Junk boot

Details Junk boot Junk boot

1977-09-01

1978-09-05

Purser, Ernest R.

Wells

With junk retrieving means

166162, 166202, 175308, E21B 3108

Patent

active

041112628

ABSTRACT:
A tubular, flexible rubber-like junk boot is positioned on the lower end of a drill string, blade-type stabilizer to catch small but dense particles of debris which are not removed from the hole by the drilling fluid. The boot has means on its lower end for clamping the boot in place.

REFERENCES:
patent: 1167670 (1916-01-01), Wheeler
patent: 2014805 (1935-09-01), Hinderliter
patent: 2672199 (1954-03-01), McKenna
patent: 2894725 (1959-07-01), Baker
patent: 2927644 (1960-03-01), Caldwell
patent: 3102600 (1963-09-01), Jackson
patent: 3419094 (1968-12-01), Bobo
patent: 3467196 (1969-09-01), Kinsman
patent: 3741301 (1973-06-01), Maly et al.
patent: 3814180 (1974-06-01), Oliver

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