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Portable refrigerated rig mat

Inactive Publication Date: 2011-12-08
WOLD MICHAEL C
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of these mats is limited to the winter and spring when the thermafrost substrate remains frozen.
As a result, work cannot continue in these regions when the thermafrost substrate begins to thaw.
While thermosyphons work well in supporting a structure permanently on frozen ground, they cannot be moved and thus are not cost effective in situations, such as drilling for oil, where the equipment is going to be used for a temporary period.

Method used

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  • Portable refrigerated rig mat
  • Portable refrigerated rig mat
  • Portable refrigerated rig mat

Examples

Experimental program
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Embodiment Construction

[0015]Referring now to FIG. 1 of the drawings, a portable refrigerated rig mat 10 includes three distinct elements which can be transported separately and assembled as a unit onsite and then moved to another site and reused if desired. Because each element is separate, the elements do not have to be utilized together. Referring now also to FIG. 2, the bottommost element is an evaporator mat 11. The evaporator mat carries and protects an evaporator 12. The evaporator mat must support the weight of the other two elements and the equipment which will be placed on the mat. The evaporator mat can comprise a rectangular steel evaporator frame 14 which defines an evaporator cavity 15. The frame can be constructed from standard structural steel I beams or channels which are joined to one another by welding or similar methods. Side beams 16 are located on each side of the frame. End beams 17 extend between the ends of the side beams. Cross beams 18 can extend between the opposed sides of the...

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PUM

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Abstract

A portable refrigeration mat includes an evaporator mat. An evaporator is located in the evaporator mat. Located above the evaporator mat is an insulation mat which thermally insulates the evaporator mat from the surrounding environment. Located above the insulation mat is a load mat having a planar load carrying upper surface. The evaporator is fluidly interconnected with a condenser to provide a thermosyphon unit which is portable and can be moved from site to site.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit under 35 U.S.C. §119(e) of U.S. Provisional Patent Application No. 61 / 336,006, the disclosure of which is hereby expressly incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]This invention relates to a portable and reusable equipment support mat, or rig mat, for use on frozen ground. When it is necessary to support equipment temporarily on areas where the ground is frozen for extended durations, such as in the arctic, an ice pad is built on top of the thermafrost substrate, portable rig mats are placed on the ice pad and the equipment is placed on the rig mats. However, the use of these mats is limited to the winter and spring when the thermafrost substrate remains frozen. As a result, work cannot continue in these regions when the thermafrost substrate begins to thaw. Since the use of these mats for activities such as drilling for oil does not have a predefined time limit, it may be nece...

Claims

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Application Information

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IPC IPC(8): F25D31/00
CPCE21B41/00
Inventor WOLD, MICHAEL C.
Owner WOLD MICHAEL C