Polycentric reamer

Details Polycentric reamer Polycentric reamer

1993-06-08

1994-12-13

Buiz, Michael Powell

Boring or penetrating the earth

With tool shaft detail

Shaft carried guide or protector

175344, E21B 1000

Patent

active

053722094

ABSTRACT:
A polycentric reamer having a body thrust unit and reaming unit is especially useful for locally reaming a borehole beneath a casing string. By asymmetrically positioning a reaming unit within a body formed from non-coaxial mated cylinders, superior results are achieved. These results include minimizing wear on the casing string.

REFERENCES:
patent: 1812043 (1931-06-01), Grant
patent: 2103583 (1937-12-01), Howard et al.
patent: 2499916 (1950-03-01), Harris
patent: 2699921 (1955-01-01), Garrison
patent: 2790625 (1957-04-01), Dean

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