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US 4,442,896 AGranted
Treatment of underground beds
OwnerLucio V. Reale, William R. McKayinventors
Life of this patent
Estimating the term…
Abstract
A method of preparing an underground bed for treatment. A channel is formed in the bed extending from the ground down through the bed and up to the ground. A cutting device is inserted into the channel operated to form a pathway in a substantially vertical plane.
Claims9
A method of preparing an underground bed for treatment that comprises:
- forming a channel in the bed with a drill having an attached drill string and detachably securing a cutting device to the drill string, such that said cutting device is inserted while forming the channel, the channel extending from the ground at a first point, down through the bed to a predetermined depth and up to the ground at a second point;
- operating the cutting device to form a pathway in a substantially vertical plane.
Dependencies are inferred from the claim text.