Drilling apparatus
AssigneeHy-Tech Drilling Ltd.
InventorHarvey Tremblay
Life of this patent
Estimating the term…
Abstract
A drilling apparatus includes a platform for positioning at a drilling site) a mast pivotally mounted on the platform) a rod clamp on one end of the mast for clamping a drill rod) a drill head slidably mounted on the mast for driving the drill rod during a drilling operation, a main ram connected to said mast and said drill head for moving the drill head longitudinally of the mast) a casing clamp on the rod clamp for clamping the mast to a top end of a casing carrying the rod) whereby the mast is anchored to the ground during drilling) and a drill head slidable on the mast for driving the drill rod during drilling.
Claims5
A drilling apparatus for use with a well casing anchored in the ground at the start of a drilling operation, and a platform for positioning at a drilling site, said apparatus comprising:
- (a) a mast for mounting on said platform for rotation between a horizontal non-use position and an inclined or vertical drilling position;
- (b) a rod clamp fixedly mounted on one end of said mast for clamping a drill rod during the drilling operation;
- (c) a casing clamp on said rod clamp including arms pivotally connected to said rod clamp, and opposed jaws on said arms for gripping a top end of the casing to clamp said mast to the casing, whereby the mast is anchored to the casing and the ground during the drilling operation;
- (d) a drill head slidably mounted on said mast for movement toward and away from said rod clamp, said drill head being adapted to drive a drill rod during the drilling operation;
- and
- (e) a main ram connected to said mast and said drill head for moving said drill head longitudinally of the mast during the drilling operation, whereby drilling can be effected with relatively little movement of the platform due to reaction forces generated during drilling or rod pulling.
Dependencies are inferred from the claim text.