Method and apparatus for use when changing the direction of a we

Details Method and apparatus for use when changing the direction of a we Method and apparatus for use when changing the direction of a we

1981-12-24

1984-02-28

Leppink, James A.

Boring or penetrating the earth

Processes

Boring curved or redirected bores

175344, 175406, E21B 706

Patent

active

044337388

ABSTRACT:
A method is disclosed of smoothing out a curved section of a well bore that has been drilled with a bent sub-downhole motor assembly. The method includes moving a reamer with a body having a cylindrical section and a lower tapered section equipped with a plurality of cylindrical cutters on each section through the curved section, while being rotated by the drilling assembly to be used to continue drilling the well bore below the curved section.

REFERENCES:
patent: 2553874 (1951-05-01), Spaulding et al.
patent: 2685431 (1954-08-01), James
patent: 3398804 (1968-08-01), Holbert
patent: 4330043 (1982-05-01), Sheffield et al.
patent: 4333539 (1982-06-01), Lyons et al.
Eastman Oil Well Survey Document, Eastco, World Oil, Feb. 15, 1955.

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