Drill rod handler

• US 8,186,925 B2
• Filed: 04/11/2007
• Issued: 05/29/2012
• Est. Priority Date: 04/11/2006
• Status: Active Grant

• Current Assignee: Boart Longyear Company (Boart Longyear Limited)
• Original Assignee: Longyear TM Incorporated (Boart Longyear Limited)
• Inventors: Littlely, Keith William
• Primary Examiner(s): Adams, Gregory
• Application Number:
  US12/297,038
• Publication Number:
  US 20100021271A1
• Time in Patent Office: 1,875 Days
• Field of Search: 166/77.51, 166/77.52, 175/85, 414 2251- 2256, 414/22.58, 414/22.62, 414/22.65, 414/22.69, 414/22.71, 414/23, 414/736, 414/745.1, 4147453-7455, 414/745.8, 414/746.3, 414/746.5, 414/908, 414910-911, 901/30, 901/39
• US Class Current: 414/22.55
• CPC Class Codes: E21B 19/155 Handling between horizontal and vertical position

Abstract

An elongate item handling means comprising a base (11) adapted to be fixed to a fixture, an elongate member support (13) having a first axis, the elongate member support comprising an engagement means (19) adapted to engage an elongate item and support the elongate item such that it is parallel to the first axis and to move the elongate item into engagement with the elongate member support, wherein the elongate member support is supported from the base to be rotatable about a second axis which is transverse to the first axis whereby the elongate item when supported from the elongate member support can be moved between an upright position and a substantially horizontal position, the base being movable on the fixture between a first position located at a desired erect position of the elongate item and one or more positions clear of the first position, said elongate member support.

Claims

1. A drilling system comprising a drilling mast which is to be associated with drill string located in a bore hole and a drill rod handling device which in use is intended to be mounted adjacent the drilling mast, the drill rod handling device comprising:

a base adapted to be supported from the drill rig;

a movable clamp coupled to the base, the moveable clamp being configured to grasp a drill rod from a first, storage position with a first orientation;

a first drive for rotating the moveable clamp about a first axis that is parallel and offset from the drill rod when grasped in the moveable clamp;

a second drive for rotating the moveable clamp about a second axis to move the drill rod from the first orientation toward a vertical orientation and into a second orientation;

a third drive for rotating the moveable clamp about a third axis to move the drill rod into a second, drilling position while maintaining the drill rod in the second orientation, the third axis being parallel and offset from the drill rod when in the second orientation, wherein when the drill rod is in the second orientation the third axis is parallel and offset from the first axis and when the drill rod is in the first orientation the third axis is transverse to the first axis.

2. A drilling system as recited in claim 1, further comprising:

an elongate member extending from the movable clamp; and

an engagement member coupled to the elongate member, the engagement member being adapted to grasp the drill rod.

3. A drilling system as recited in claim 2, wherein the elongate member support further comprises an elongate extension, the engagement member being mounted to the elongate extension to be movable along the elongate extension.

4. A drilling system as recited in claim 3, wherein the engagement member includes a clamping mechanism to enable the engagement member to clampingly engage the drill rod.

5. A drilling system as recited in claim 1, wherein the elongate member support is rotatable on the base about the first axis and wherein a central axis of the length of drill rod when engaged by the elongate member support is spaced from the first axis.

6. A drilling system as recited in claim 1, wherein the base comprises a radial arm which supports the moveable clamp towards one end and which adapted to be supported at its other end on the drill rig.

7. A drilling system as recited in claim 6, wherein the drill rod handling device is adapted to grasp a drill rod from any storage position within a 270 degree range of motion relative to the radial arm and move the drill rod into the drilling position.

8. A drilling system as recited in claim 6, wherein the base is moveably coupled to the drill rig.

9. A drilling system as recited in claim 6, wherein the first drive is adapted to rotate the moveable clamp independently from the radial arm.

10. A drilling system as recited in claim 6, wherein the third drive is adapted to rotate the radial arm and the moveable clamp together about the third axis.

11. A drilling system as recited in claim 1, wherein the third drive is adapted to rotate the moveable clamp and the drill rod grasped therein within a 270 degree range of motion about the second axis.

12. A drilling system as recited in claim 1, wherein the second axis is a horizontal axis.

13. A method of installing lengths of a drill rod into a drill string associated with a drilling mast comprising:

grasping a drill rod within a moveable clamp when the drill rod is in a first orientation, wherein the drill rod is capable of rotation about a first axis that is parallel and offset from the drill rod when in the first orientation;

rotating the drill rod about a second axis into a second orientation parallel to the drilling mast, wherein the second axis is transverse to the first axis;

rotating the drill rod about the first axis that is parallel and offset from the drill rod when grasped in the moveable clamp; and

rotating the drill rod about a third axis and into a drilling position above the drill string, wherein when the drill rod is in the second orientation the third axis is parallel and offset from the first axis and when the drill rod is in the first orientation the third axis is transverse to the first axis.

14. The method as recited in claim 13, further comprising attaching the drill rod to the drill string.

15. The method as recited in claim 13, further comprising moving the drill rod axially from a storage zone prior to grasping the drill rod with the moveable clamp.

16. The method as recited in claim 15, wherein moving the drill rod axially comprises:

engaging the drill rod with an engagement member positioned on an elongate extension coupled to the moveable clamp; and

moving the engagement member along the elongate extension to move the drill rod axially toward the moveable clamp.

17. The method as recited in claim 13, further comprising moving the drill rod vertically by translating the moveable clamp along the drilling mast.

18. The method as recited in claim 13, wherein:

the moveable clamp is coupled to a first end of a radial arm; and

the second, opposing end of the radial arm is coupled to a base positioned on the drilling rig.

19. The method as recited in claim 18, wherein rotating the drill rod about a first axis that is parallel and offset from the drill rod when grasped in the moveable clamp comprises rotating the drill rod independently from the radial arm.

20. The method as recited in claim 19, wherein rotating the drill rod about the drilling mast and into a drilling position above the drill string comprises rotating the drill rod and the radial arm together about the drilling mast.

21. The method as recited in claim 13, wherein the second axis is a horizontal axis.

22. A method of removing a length of drill rod from a drill string associated with a drilling mast comprising:

grasping a drill rod in a drilling position having a first orientation using a movable clamp positioned at an end of a radial arm coupled to the drilling mast;

rotating the radial arm, the moveable clamp, and the grasped drill rod about a first axis to move the drill rod out of the drilling position;

rotating the moveable clamp and the grasped drill rod independent from the radial arm about a second axis that is parallel and offset from the drill rod when grasped in the moveable clamp;

rotating the moveable clamp and the grasped drill rod about a third axis to move the drill rod into a storage orientation, wherein when the drill rod is in the first orientation that first axis is parallel and offset from the second axis and when the drill rod is in the storage orientation that second axis is transverse to the first axis; and

releasing the drill rod from the moveable clamp.

23. The method as recited in claim 22, wherein the third axis is a horizontal axis.