Drilling apparatus
AssigneeHy-Tech Drilling Ltd.
InventorHarvey Tremblay
Life of this patent
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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 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. By anchoring the apparatus to the bedrock during drilling a core sample removal, the apparatus cannot become misaligned due to reaction forces between the drill and the ground.
Claims7
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 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 a drilling operation;
- (c) a casing clamp on said one end of said mast for clamping said mast to a top end of said casing, whereby the mast is anchored to the ground during 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 a 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 a drilling operation.
Dependencies are inferred from the claim text.