Directional drilling
AssigneeTround International, Inc.
InventorDavid Dardick
Life of this patent
Estimating the term…
Abstract
A system for directional drilling of boreholes into the earth under control of the driller at the surface, employing a rotating earth drill including a projectile firing mechanism, that is timed to nonsymmetrically fire projectiles into the earth at controlled angular positions that are offset from the axis of the drill and drill string in the desired direction of drilling.
Claims9
In a system for surface controlled directional drilling of the earth employing a downhole drill including a gun for successively firing projectiles into the earth at offset positions relative to the central axis of the drill string,
- acoustic detecting and triangulating means near the surface for detecting the firing of the gun and impacting of the projectiles with rock and determining the downhole location of the drill,
- and remote control means near the surface for controlling the firing of projectiles from the guns at a desired offset location relative to the drill string thereby to control the direction of drilling.
In a system for surface controlled directional drilling and boring of the earth employing a rotary downhole drill on a drill string and including a gun for successively firing projectiles into the earth at desired locations offset from the axis of the drill string, remote control means triggered at the surface for controlling the firing of the gun at a given angular position of the drill in the borehole to control the desired direction of drilling into the earth.
Dependencies are inferred from the claim text.