Well case driving anvil

Details Well case driving anvil Well case driving anvil

1980-11-24

1983-06-14

Novosad, Stephen J.

Boring or penetrating the earth

Below-ground impact members

166178, E21B 406, E21B 720

Patent

active

043877761

ABSTRACT:
A downhole casing anvil device is described that provides a surface against which the casing can be driven down a drilled hole from near the bottom of the casing. The anvil device includes a solid body having a mounting plate that is complementary to the cross-sectional configuration of the casing, and an anvil shoulder that projects outwardly therefrom. The shoulder is adapted to fit through an aperture in the casing and to project into the casing interior. The plate includes a mounting surface that fits flush against the casing when the anvil shoulder is fitted through the casing aperture. Axial edges of the plate may be welded to the casing, clear of the aperture, to secure the anvil device to the casing.

REFERENCES:
patent: 1858500 (1932-05-01), Hinderliter
patent: 1908217 (1933-05-01), Blumenthal
patent: 3190378 (1965-06-01), Davey, Sr. et al.
patent: 3690380 (1972-09-01), Grable
patent: 3835943 (1974-09-01), Bray

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