Method and apparatus for sealing a well bore and sidetracking a

Details Method and apparatus for sealing a well bore and sidetracking a Method and apparatus for sealing a well bore and sidetracking a

1997-05-28

1999-08-17

Dang, Hoang C.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

166 50, 1662411, E21B 704

Patent

active

059379553

ABSTRACT:
A method and apparatus for sealing a pilot well and directionally drilling a directional well from the pilot well by the use of a casing including an easily drillable section positioned through a selected zone.

REFERENCES:
patent: 2155129 (1939-04-01), Hall et al.
patent: 2173035 (1939-09-01), Armentrout et al.
patent: 2207345 (1940-07-01), Hammer
patent: 2284969 (1942-06-01), Adkison
patent: 2436198 (1948-02-01), Cardwell et al.
patent: 4890675 (1990-01-01), Dew
patent: 5564503 (1996-10-01), Longbottom et al.

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