Multi-well bop cellar trailer

Patent metadata

Field	Value
Publication number	US-10822924-B2
Application number	US-201715451968-A
Country	US
Kind code	B2
Filing date	Mar 7, 2017
Priority date	Mar 7, 2016
Publication date	Nov 3, 2020
Grant date	Nov 3, 2020

Abstract

A drilling rig may include a detachable, modular cellar arranged beneath a drill floor of the drilling rig. The cellar may be or include a cellar trailer and it may also be configured to house drilling equipment, such as well head equipment and/or one or more blowout preventers. The cellar trailer may provide work areas, such that the well head equipment may be prepared, tested, or generally operated within the cellar trailer. The cellar trailer may additionally be configured to provide stiffening support to the drill floor in order to mitigate deflection of the drill floor during drilling operations. The stiffening support may be provided by a shear wall extending from the cellar trailer. The cellar trailer may be towable. The cellar trailer may additionally be skiddable and/or walkable.

First claim

We claim:

1. A drill rig cellar module for arrangement on a well head in conjunction with an otherwise self-supporting drill rig, the cellar module comprising:
a housing for storing well head equipment; and
a frame coupled to and supporting the housing;
wherein, the frame and the housing are sized, shaped, and configured for removable placement over a well head, below a drill floor of the self-supporting drill rig, and amidst a substructure of the self-supporting drill rig.

2. The cellar module of claim 1 , wherein the housing comprises a plurality of substructure enclosures.

3. The cellar module of claim 2 , wherein the well head equipment comprises at least one blowout preventer.

4. The cellar module of claim 2 , wherein the frame comprises a pair of bearing feet.

5. The cellar module of claim 4 , wherein the bearing feet are inner bearing feet, and wherein the frame further comprises a pair of outer bearing feet.

6. The cellar module of claim 5 , wherein the inner bearing feet are configured to engage a rail.

7. The cellar module of claim 2 , wherein the frame comprises at least two tires.

8. The cellar module of claim 2 , further comprising a shear wall configured to extend between a ground surface and the drill floor and configured to provide supplemental stiffening support to the drill floor of the drill rig, wherein the shear wall comprises a pair of bearing pads.

Assignees

• Nat Oilwell Varco Lp

Inventors

• Konduc Kameron Wayne
• Stoik Randy Steven
• Konowalec Roman
• Callaghan Jonathon Douglas
• Liu Li
• Chalus David Frederick

Classifications

• E21B7/02 Primary

  Drilling rigs characterised by means for land transport {with their own drive}, e.g. skid mounting or wheel mounting · CPC title

• E21B15/00

  Supports for the drilling machine, e.g. derricks or masts · CPC title

• E04B1/34336

  Structures movable as a whole, e.g. mobile home structures (vehicles comprising living accommodation for people, e.g. caravans, camping or like vehicles B60P3/32) · CPC title

• E21B33/06

  Blow-out preventers {, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers (rotating blow-out preventers E21B33/085)} · CPC title

• E21B41/00 Primary

  Equipment or details not covered by groups E21B15/00 - E21B40/00 · CPC title