Packer Mill

Details Packer Mill Packer Mill

1984-11-27

1986-10-14

Novosad, Stephen J.

Boring or penetrating the earth

With tool shaft detail

285319, 294 8618, E21B 1706

Patent

active

046167218

ABSTRACT:
A milling tool for removing a packer from a well includes a releasable catcher for supporting remains of a milled packer (51). The catcher has a sleeve (26) with deflectable fingers (29) which normally support the remains of the packer. If the packer should become stuck, the fingers (29) press on a release ring (39) which has a ramp (43) that engages a complementary ramp (42) on a shoulder (41) on the mandrel (14) of the mill. The ramps cam the ring outwardly until the ring breaks in tension at a deliberately weakened location (52). This releases the sleeve (26) to slide downwardly and permit the fingers (29) to deflect inwardly into a recess (23), thereby clearing the bore of the stuck packer.

REFERENCES:
patent: 2784987 (1957-03-01), Corcoran
patent: 2904114 (1959-09-01), Webb
patent: 2934147 (1960-04-01), Baker
patent: 3019840 (1962-02-01), Kennard
patent: 3095926 (1963-07-01), Rush
patent: 3150718 (1964-09-01), Crowe
patent: 3282358 (1966-11-01), Carothers
patent: 4488596 (1984-12-01), Akkerman

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