Method and apparatus for indicating the orientation of a down ho

Details Method and apparatus for indicating the orientation of a down ho Method and apparatus for indicating the orientation of a down ho

1974-07-01

1976-10-05

Abbott, Frank L.

Boring or penetrating the earth

With signaling, indicating, testing or measuring

Tool position direction or inclination measuring or...

340 18NC, 33301, 33306, E21B 47022

Patent

active

039839486

ABSTRACT:
A drilling assembly is equipped with apparatus that includes a device that periodically changes the resistance to the flow of drilling fluid through the drill pipe to create pressure pulses that can be detected at the earth surface and a sensor for controlling the pulse orienting device in response to the orientation of the drilling assembly relative to a preselected orientation relative to earth.

REFERENCES:
patent: 2925251 (1960-02-01), Arps
patent: 3122213 (1964-02-01), Hawk
patent: 3274694 (1966-09-01), Hildebrandt
patent: 3316651 (1967-05-01), Godbey
patent: 3455401 (1969-07-01), Taylor
patent: 3466754 (1969-09-01), Alder
patent: 3718194 (1973-02-01), Hering et al.
patent: 3737843 (1973-06-01), Le Peuvedic
patent: 3789355 (1974-01-01), Patton
patent: 3791042 (1974-02-01), Bell

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