Orienting tool for coiled tubing drilling

Details Orienting tool for coiled tubing drilling Orienting tool for coiled tubing drilling

1996-08-21

1999-04-20

Dang, Hoang C.

Boring or penetrating the earth

Means traveling with tool to constrain tool to bore along...

175322, E21B 708

Patent

active

058948961

ABSTRACT:
There is described an improved apparatus for azimuthal orientation of a tool in a wellbore. The apparatus comprises a tubular housing, a mandrel rotatably supported in the tubular housing and extending therefrom for connection to a tool for rotation thereof, a piston mandrel axially aligned with and connected to the mandrel, a piston longitudinally movable in an annulus between the piston mandrel and the tubular housing and being non-rotatable relative to the tubular housing, at least one pin longitudinally movable in concert with the piston arranged to track in respective helical grooves in the mandrel causing rotation of the mandrel in response to longitudinal movement of the pins, and a flow path for selective delivery of pressurized hydraulic fluid to either side of the piston for rotating the mandrel in either the clockwise or counterclockwise directions, or to both sides of the piston equally to maintain the mandrel in a fixed annular orientation.

REFERENCES:
patent: 5215151 (1993-06-01), Smith et al.
patent: 5311952 (1994-05-01), Eddison et al.
patent: 5316093 (1994-05-01), Morin et al.
patent: 5316094 (1994-05-01), Pringle
patent: 5339913 (1994-08-01), Rives
patent: 5373898 (1994-12-01), Pringle
patent: 5485889 (1996-01-01), Gray

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