Assembly for making oriented bore-holes

Details Assembly for making oriented bore-holes Assembly for making oriented bore-holes

1988-04-01

1989-08-22

Massie, IV, Jerome W.

Boring or penetrating the earth

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

175 45, 175 61, E21B 708, E21B 47024

Patent

active

048587052

ABSTRACT:
An assembly for driving a drilling tool in rotation about an axis related to the drilling tool from a drive column, rotating at its lower end about a second axis, with the axes being substantially convergent at the same point and forming therebetween an angle alpha. The assembly comprises in combination a remote controlled deflector adapted for creating a deviation of an angle alpha, a controller for controlling the value of the angle alpha, a guide for rotating a drilling tool and the drive column at its lower end about the axes relatively to the deflector and a controller for controlling the polar position of the deflector relatively to second axis.

REFERENCES:
patent: 2672321 (1954-03-01), Zubin
patent: 3382938 (1968-05-01), Williams
patent: 3667556 (1972-06-01), Henderson
patent: 3903974 (1975-09-01), Cullen
patent: 4143722 (1979-03-01), Driver
patent: 4436168 (1984-03-01), Dismukes
"Recents Developpements en Forage Teleguide", R. Desbrandes et al., Revue del' Institut Francais du Petrole, vol. 38, No. 1, Jan. 1983, pp. 63-81.

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