Mobile drilling rig with replaceable dolly
First Claim
Patent Images
1. A mobile drilling rig, comprising:
- a carrier frame adapted for selective attachment to one of a first dolly assembly and a second dolly assembly, the carrier frame having a rearward portion and an opposing forward portion for connecting to a powered tractor;
a mast pivotally connected in a lowered position to the rearward portion of the carrier frame during transport and raised to an operative position over a well;
a top drive supported on the mast when in an operative position and moveable along the mast;
a coil tubing injector supported on the mast when in an operative position for injecting coil tubing into the well;
the first dolly assembly supporting at least a portion of the carrier frame when attached thereto, the first dolly assembly comprising a first plurality of wheels on a first plurality of axles, the first dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame; and
the second dolly assembly supporting at least a portion of the frame when attached thereto, the second dolly assembly comprising a second plurality of wheels on a second plurality of axles, the first plurality of wheels on the first plurality of axels differing in at least one of number and spacing from the second plurality of wheels on the second plurality of axels, the second dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame.
4 Assignments
0 Petitions
Accused Products
Abstract
Mobile drilling rig 10 includes a carrier frame 14 and a mast 12 supported on the frame. A top drive 16 is supported on the mast when in an operative position, and a coil tubing injector 20 is supported on the mast when in an operative position. A first dolly assembly 22 and a second dolly assembly 60 are provided each for supporting a portion of the carrier frame, and include a first plurality of wheels on a first plurality of axles. Each dolly assembly is adaptive for selective attachment to and detachment from the carrier frame, so that the dolly assemblies may be changed out for compliance with regulations and road conditions.
32 Citations
23 Claims
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1. A mobile drilling rig, comprising:
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a carrier frame adapted for selective attachment to one of a first dolly assembly and a second dolly assembly, the carrier frame having a rearward portion and an opposing forward portion for connecting to a powered tractor; a mast pivotally connected in a lowered position to the rearward portion of the carrier frame during transport and raised to an operative position over a well; a top drive supported on the mast when in an operative position and moveable along the mast; a coil tubing injector supported on the mast when in an operative position for injecting coil tubing into the well; the first dolly assembly supporting at least a portion of the carrier frame when attached thereto, the first dolly assembly comprising a first plurality of wheels on a first plurality of axles, the first dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame; and the second dolly assembly supporting at least a portion of the frame when attached thereto, the second dolly assembly comprising a second plurality of wheels on a second plurality of axles, the first plurality of wheels on the first plurality of axels differing in at least one of number and spacing from the second plurality of wheels on the second plurality of axels, the second dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobile drilling rig, comprising:
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a carrier frame adapted for selective attachment to one of a first dolly assembly and a second dolly assembly, the carrier frame having a rearward portion and an opposing forward portion for connecting to a powered tractor; a mast pivotally connected in a lowered position to the rearward portion of the carrier frame and raised to an operative position over a well; a top drive supported on the mast when in an operative position and moveable along the mast; a coil tubing injector supported on the mast when in an operative position for injecting coil tubing into the well; the first dolly assembly supporting at least a portion of the carrier frame when attached thereto, the first dolly assembly comprising a first plurality of wheels on a first plurality of axles, the first dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame; and the second dolly assembly supporting at least a portion of the frame when attached thereto, the second dolly assembly comprising a second plurality of wheels on a second plurality of axles differing in at least one of number and spacing from the first plurality of wheels on the first plurality of axles, the second dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame. - View Dependent Claims (11, 12, 13)
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14. A method of transporting and operating a drilling rig, comprising:
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providing a carrier frame adapted for selective attachment to one of a first dolly assembly and a second dolly assembly, the carrier frame having a rearward portion and an opposing forward portion for connecting to a powered tractor; pivotally supporting a mast on the rearward portion of the carrier frame for raising to an operative position over a well; supporting a top drive on the mast when in an operative position and moveable along the mast; supporting a coil tubing injector on the mast when in an operative position for injecting coil tubing into the well; providing the first dolly assembly supporting at least a portion of the carrier frame when attached thereto, the first dolly assembly comprising a first plurality of wheels on a first plurality of axles, the first dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame; providing the second dolly assembly supporting at least a portion of the frame when attached thereto, the second dolly assembly comprising a second plurality of wheels on a second plurality of axles, the second dolly assembly adapted for selective attachment to and detachment from the rearward portion of the carrier frame, the first plurality of wheels on the first plurality of axels differing in at least one of number and spacing from the second plurality of wheels on the second plurality of axels; and removing one of the first and second dolly assemblies from engagement with the carrier frame and connecting the other of the first and second dolly assemblies with the carrier frame. - View Dependent Claims (15, 16, 17)
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18. A mobile coil tubing carrier frame, comprising:
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a coil tubing reel supported on the coil tubing carrier frame during transport, the coil tubing carrier frame being structurally separate from a carrier frame for a drilling rig mast and having a rearward portion and an opposing forward portion for connecting to a powered tractor; the coil tubing carrier adapted for selective attachment to one of one dolly assembly and another dolly assembly; the one dolly assembly supporting at least a portion of the coil tubing carrier frame, the one dolly assembly comprising one plurality of wheels on one plurality of axles, the one dolly assembly adapted for selective attachment to and detachment from the rearward portion of the coil tubing carrier frame; and the another dolly assembly supporting at least a portion of a coil tubing carrier frame, the another dolly assembly comprising another plurality of wheels on another plurality of axles differing in at least one of number and spacing from the one plurality of wheels on the one plurality of axels, the another dolly assembly adapted for selective attachment into and detachment from the rearward portion of the coil tubing carrier frame. - View Dependent Claims (19, 20, 21)
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22. A mobile drilling rig, comprising:
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a carrier frame adapted for selective attachment to one of a first dolly assembly and a second dolly assembly; a mast supported on the carrier frame during transport and raised to an operative position over a well; a top drive supported on the mast when in an operative position and moveable along the mast; a coil tubing injector supported on the mast when in an operative position for injecting coil tubing into the well; the first dolly assembly supporting at least a portion of the carrier frame when attached thereto, the first dolly assembly comprising a first plurality of wheels on a first plurality of axles, the first dolly assembly adapted for selective attachment to and detachment from the carrier frame; and the second dolly assembly supporting at least a portion of the frame when attached thereto, the second dolly assembly comprising a second plurality of wheels on a second plurality of axles, the first plurality of wheels on the first plurality of axels differing in at least one of number and spacing from the second plurality of wheels on the second plurality of axels, the second dolly assembly adapted for selective attachment to and detachment from the carrier frame; a coil tubing reel supported on a coil tubing carrier frame during transport, the coil tubing carrier frame being substantially separate from the carrier frame; a third dolly assembly for supporting at least a portion of the coil tubing carrier frame, the third dolly assembly comprising a third plurality of wheels on a third plurality of axles, the third dolly assembly adapted for selective attachment to and detachment from the coil tubing carrier frame; and a fourth dolly assembly for supporting at least a portion of the coil tubing frame, the fourth dolly assembly comprising a fourth plurality of wheels on a fourth plurality of axles, the first plurality of wheels on the first plurality of axels differing in at least one of number and spacing from the second plurality of wheels on the second plurality of axels, the fourth dolly assembly adapted for selective attachment to and detachment from the coil tubing carrier frame. - View Dependent Claims (23)
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Specification