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Land rig

A drilling rig and drilling technology, which is applied in drilling equipment, earthwork drilling, support devices, etc., can solve the problems of unstable pillars and long pillar components.

Inactive Publication Date: 2010-08-18
NAT OILWELL VARCO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With such a system, the strut assembly is long when transported and the strut is unstable when lifted

Method used

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Embodiment Construction

[0037] Figures 1, 2 and 3 show a land drilling rig 10 according to the present invention comprising an A-frame apparatus 20 mounted on a base 40 and movable from a substantially horizontal position (such as shown in Figures 3 and 5A) to Strut system 60 (with struts 11 ) in an erected upright position (eg, as shown in FIGS. 5D, 5E ). A portion of the column and base 40 is raised and lowered by mobile equipment generally indicated by reference numeral 50 .

[0038] The land drilling rig 10 may include any and all of the typical assortment of equipment, controls, winches, winches, equipment, devices and systems for any known land drilling rig. As shown, the land drilling rig 10 includes: tubular rotating equipment (e.g., a top drive system 12 and / or rotating equipment such as a turntable 13) on a strut 11; a crown block pulley or block 14; a traveling block 15 (see Fig. 3); lift pulley 16; optional two-story platform 17; strut ends 18, wherein two strut ends 18a pivot on the top...

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PUM

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Abstract

A land rig comprising a mast (11), a substructure (40) beneath the mast (11), the substructure (40) having a top part (43), movement apparatus (50) connect able to the substructure (40), and the mast (11), the movement apparatus (50) for moving the mast (11) and for moving the top part (43) of the substructure (40).

Description

technical field [0001] The present invention relates to an onshore drilling rig, especially, but not limited to, an onshore drilling rig for drilling and servicing oil and gas wells. Background technique [0002] A wide variety of drilling rigs for drilling wells and various wellbore operations are disclosed in the prior art; for example, but not limited to, U.S. Patents 3,340,938; 3,807,109; 3,922,825; 3,942,593; 6,634,436; 6,523,319 and citations of these patents - all of which are hereby incorporated by reference in their entirety for all purposes. [0003] In many onshore drilling operations, an onshore rig is shipped to the site for assembly and then disassembled. Importantly, land rig components are easy to transport and assemble. Costs associated with land rigs and their associated equipment can be calculated on an hourly or daily basis, so efficient dismantling, hauling and rigging operations are desired. [0004] US Patent 3,922,825 discloses a drilling rig with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B15/00E21B15/04
CPCE21B15/00
Inventor D·W·李M·S·麦库
Owner NAT OILWELL VARCO LP