MOBILE DRILLING RIG
First Claim
Patent Images
1. A drilling rig, comprising:
- a pair of mean beams supportable by a pair of rails;
a substructure comprising;
a plurality of pivoting legs;
a drill floor comprising a plurality of spreaders pivotably supported by the plurality of pivoting legs; and
a plurality of drill floor subassemblies supported by the plurality of spreaders;
an A-frame secured to the main beams; and
a mast pivotably secured to the main beams and configured to lay down in a pre-erected stage;
wherein the plurality of pivoting legs supporting the plurality of spreaders are configured to lay down in a pre-erected stage.
1 Assignment
0 Petitions
Accused Products
Abstract
A drilling rig may include a pair of main beams supportable by a pair of rails, a substructure, an A-frame secured to the main beams, and a mast pivotably secured to the main beams and configured to lay down in a pre-erected stage. The substructure may include a plurality of pivoting legs, a drill floor having a plurality of spreaders pivotably supported by the plurality of pivoting legs, and a plurality of drill floor subassemblies supported by the plurality of spreaders. The plurality of pivoting legs supporting the spreaders may be configured to lay down in a pre-erected stage as well.
-
Citations
20 Claims
-
1. A drilling rig, comprising:
-
a pair of mean beams supportable by a pair of rails; a substructure comprising; a plurality of pivoting legs; a drill floor comprising a plurality of spreaders pivotably supported by the plurality of pivoting legs; and a plurality of drill floor subassemblies supported by the plurality of spreaders; an A-frame secured to the main beams; and a mast pivotably secured to the main beams and configured to lay down in a pre-erected stage; wherein the plurality of pivoting legs supporting the plurality of spreaders are configured to lay down in a pre-erected stage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A drilling rig, comprising:
-
an A-frame portion; a mast portion; and a substructure portion comprising; a plurality of drill floor subassemblies; and means for pivotably erecting the subassemblies. - View Dependent Claims (12, 13, 14)
-
-
15. A method for assembling a drilling rig, comprising:
-
installing a pair of main beams on a pair of rails; installing a plurality of pivoting legs in a laying down position, and configured to pivot into an upright position; installing a drill floor pivotably supported on the pivoting legs; installing an A-frame; installing a mast in a laying down position, and configured to pivot into an upright position; erecting the mast by pivoting it into an upright position; and erecting the drill floor by pivoting the pivoting legs into an upright position. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification