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Well cellar assembly with alternate plate well slots and method of using same

a technology of well cellar and plate well, which is applied in the direction of well cellar/well accessories, fluid removal, sealing/packing, etc., can solve the problems of oil spillage, oil spillage, oil spillage, etc., and achieve the effect of facilitating an ambidextrous or flexible design of internal features

Active Publication Date: 2020-02-06
NAT OILWELL VARCO LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This design enhances flexibility in well pad development and maintenance, prevents fluid spills, and reduces remediation costs by ensuring a secure and adaptable well cellar system.

Problems solved by technology

These other designs provide no protection against fluid spills that can arise during drilling operations.
More specifically, during drilling, completion and other well operations, fluids from the drilling rig and production equipment, such as lubricants, drilling mud, completion fluids, and oil, can leak or spill into and out of the well cellar.
These spills can create ecological problems, polluting soil samples as well as surface and subsurface aqueous sources.
Such corrupted soil areas must be remediated before a well is capped, adding expense to taking an under-producing well off-line.

Method used

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  • Well cellar assembly with alternate plate well slots and method of using same
  • Well cellar assembly with alternate plate well slots and method of using same
  • Well cellar assembly with alternate plate well slots and method of using same

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Embodiment Construction

[0019]Referring to FIGS. 1 and 2, the alternate well slots within a well cellar of the present application are shown. In particular, FIGS. 1 and 2 depict a well cellar 10 with a floor or base plate 11. In one embodiment, floor or base plate 11 is welded or otherwise sealed in a fluid-tight manner to the one or more vertical side walls of well cellar 10. The shape, size and dimension of well cellar 10 can vary to facilitate the specific operational plans of a user or customer. In particular, while a box-shaped well cellar 10 is shown in FIGS. 1 and 2, the well cellar of the present application can be round or circular and have one continuous side wall. The well cellar of the present application also can have more than four side walls with, for example, the shape of a pentagon, hexagon or octagon, among others. The forward wall of well cellar 10 in FIG. 1 has been removed in order to show the inner area of well cellar 10. As shown further in FIG. 6, well cellar 10, as depicted in FIG....

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PUM

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Abstract

A well cellar assembly, and a method of using same, with the well cellar including a base plate, the base plate having at least two well slot openings therein for receiving a conductor pipe, and at least one vertically extending side wall connected to the base plate with a fluid tight seal. The at least two well slot openings provide alternative locations for the conductor pipe and at least one of the at least two well slot openings is selected for placement of the conductor pipe.

Description

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH[0001]Not applicable.BACKGROUND OF THE APPLICATION[0002]In the field of oil and gas exploration / production, a well cellar can be positioned below ground level underneath a drilling rig. A well is drilled within the well cellar. The present application is directed to containment well cellars of the types generally described and claimed in U.S. Pat. Nos. 7,637,692, 7,987,904, 8,127,837, 8,256,505, and 8,485,250, each of which is hereby incorporated by reference in its entirety. These well cellars also may contain equipment such as blow out preventers, valves, and other equipment associated with drilling, completion and other well operations.[0003]Outside of the well cellar designs described and claimed in the above-noted patents, other well cellars often are made only from a section of steel culvert pipe installed in the ground with a dirt floor. These other designs provide no protection against fluid spills that can arise during drillin...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): E21B43/01E21B33/03
CPCE21B43/0122E21B33/03E21B33/13E21B41/00
Inventor ROSE, JAMES A.
Owner NAT OILWELL VARCO LP