Well perforating tool

Details Well perforating tool Well perforating tool

1978-06-20

1980-01-29

Leppink, James A.

Boring or penetrating the earth

Means carried by housing insertable in inaccessible hole to...

175 94, E21B 106

Patent

active

041857054

ABSTRACT:
A well perforating tool (9) for drilling holes in a well casing substantially from and at right angles to a vertical well bore within which the casing is disposed. The tool (9) includes an elongate housing (15) for insertion within the casing and having a detachable boot (13) at one end thereof for centralizing the longitudinal axis of the tool within the casing. Two motors (53,85) are disposed within the housing (15) for rotating a flexible drill shaft (97), and advancing and retracting the flexible drill shaft (97) with respect to the interior wall of the casing. The entire tool is supported by a cable (19) which also includes power supply and signal lines for independently activating the motors (53,85) from an above-ground control station and ascertaining the depth of drill shaft penetration.

REFERENCES:
patent: 2500785 (1950-03-01), Arutunoff
patent: 2516421 (1950-07-01), Robertson
patent: 2539047 (1951-01-01), Arutunoff
patent: 2558452 (1951-06-01), Mennecier
patent: 2631821 (1953-03-01), Caldwell
patent: 2644669 (1953-07-01), Curtis et al.
patent: 2693342 (1954-11-01), Lynes
patent: 3528515 (1970-09-01), Garrison
patent: 3797576 (1974-03-01), Azalbert et al.
patent: 3888319 (1975-06-01), Bourne, Jr. et al.
patent: 4007797 (1977-02-01), Jeter
patent: 4051908 (1977-10-01), Driver

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