Slingshot side saddle substructure

• US 9,708,861 B2
• Filed: 02/06/2015
• Issued: 07/18/2017
• Est. Priority Date: 02/13/2013
• Status: Active Grant

• Current Assignee: Nabors Drillling Technologies USA, Inc.
• Original Assignee: Nabors Drilling USA LP (Nabors Industries Limited)
• Inventors: Reddy, Padira, Gupta, Ashish
• Primary Examiner(s): Thompson, Kenneth L
• Application Number:
  US14/616,234
• Publication Number:
  US 20150218891A1
• Time in Patent Office: 893 Days
• Field of Search: 175162, 175203, 175206, 175207, 52116, 52117, 52118, 5264105
• CPC Class Codes: E21B 15/003 adapted to be moved on their substructure, e.g. with skidding means; adapted to drill a plurality of wells
• CPC Class Codes: E21B 19/14 Racks, ramps, troughs or bins, for holding the lengths of rod singly or connected; Handling between storage place and borehole E21B19/20, E21B19/22 take precedence
• CPC Class Codes: E21B 21/065 Separating solids from drilling fluids

Abstract

The drilling rig includes a first substructure and a second substructure. The second substructure is positioned generally parallel to and spaced apart from the first substructure and generally the same height as the first substructure. The drilling rig further includes a drill floor coupled to the first and second substructures, where the drill floor positioned substantially at the top of the first and second substructures.

Claims

1. A land based drilling rig comprising:

a first and second lower box, the lower boxes positioned generally parallel and spaced apart from each other;

a drill floor coupled to the first lower box by a first strut, the first lower box and first strut defining a first substructure, the drill floor coupled to the second lower box by a second strut, the second lower box and second strut defining a second substructure, the struts hingedly coupled to the drill floor and hingedly coupled to the corresponding lower box such that the drill floor may pivot between an upright and a lowered position, the drill floor including a V-door, the V-door oriented perpendicularly to a long axis of one of the substructures;

a mast coupled to the drill floor;

a tank support structure affixed to the first or second substructure, the tank support structure including;

a tank;

mud process equipment; and

a grasshopper positioned to carry cabling and lines to the drilling rig, the grasshopper positioned to couple to the drill floor generally at a side of the drill floor, and the side of the drill floor to which the grasshopper couples is oriented perpendicular to a long axis of the first or second substructure.

2. The land based drilling rig of claim 1, wherein the mast further comprises a V-door side and wherein the V-door side of the mast faces the first or second substructure.

3. The land based drilling rig of claim 1, wherein the tank is a mud tank.

4. The land based drilling rig of claim 1 wherein the mud process equipment comprises at least one of a shaker or a filter.

5. The land based drilling rig of claim 1, wherein the first and second substructures are adapted to be traveled through a wellsite.

6. The land based drilling rig of claim 1, further comprising a choke manifold.

7. The land based drilling rig of claim 1, further comprising an accumulator.

8. The land based drilling rig of claim 1, further comprising one or more of a drill line spooler, an HPU, a VFD, a driller'"'"'s cabin, hydraulic unit, trip tank, process tank, or mud gas separator.