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Method and system for recycling wells for energy production in a geothermal environment

A technology of geothermal energy and thermal energy, applied in the field of wells and systems used to recirculate in a geothermal environment for energy generation, can solve problems that do not mention the technology of realizing the loop, do not consider clustering and merging, etc., to avoid the environment Effects of Violations

Inactive Publication Date: 2018-12-21
EAVOR TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This does nothing to control unused wells that are not properly maintained and can actually cause new problems
The disclosure does not mention the techniques used to implement the loops, and does not consider the clustering and merging necessary to achieve maximum efficiency

Method used

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  • Method and system for recycling wells for energy production in a geothermal environment
  • Method and system for recycling wells for energy production in a geothermal environment
  • Method and system for recycling wells for energy production in a geothermal environment

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Embodiment Construction

[0067] now refer to figure 1 , is shown a schematic diagram of the drilling area, generally indicated by numeral 10, having a plurality of scattered unused wells 12.

[0068] now refer to figure 2 , shown with figure 1 Similar schematic, but with a number of new wells 16 to 30 drilled adjacent to corresponding unused wells 12 .

[0069] go to image 3 , a main hub 32 is provided. Although not specifically shown, the hub 32 is actually a manifold arrangement in which each of the new wells 14, 16, 18, and 20 is in fluid communication, as will be discussed in more detail below. From hub 32 , each new well 14 , 16 and 18 is spaced apart from each other, and unused wells 12 are associated with hub 32 . Each new well 14 , 16 and 18 is in fluid communication with a single adjacent unused well 12 . Fluid communication is achieved through conduits 34 and 36 . Conduit 34 is disposed below surface 38 and, more specifically, within a geothermal region, generally indicated by numer...

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Abstract

Provided are a method and apparatus for recycling unused or suspended wells and areas with predetermined suitability for well installation. In one embodiment, existing unused well sites are repurposedfor contact in or adjacent a geothermal zone. Drilling extends horizontally in direct contact with the geothermal zone for heat transfer and subsequently terminates at a newly drilled well. The heated working liquid within the sealed annulus is cooled within a sealed top loop at or below the surface and recirculated for further heat transfer. The closed loop is continuous above and below the geothermal formation and can cluster several such arrangements and also consolidate clusters in a drilling field of unused wells. The loop may be incorporated in areas with predetermined suitability (greenfield) for well installation.

Description

technical field [0001] The present invention relates to a method and apparatus for reusing unused wells drilled and areas destined for well installation, optionally including wells and / or well bores to capture the formation within the area of geothermal heat. Background technique [0002] It is well known that there are thousands of unused wells and well sites, especially in Alberta. These are referred to disparagingly as "waste" and "garbage". They are not used due to other reasons such as economic unavailability, drying up, etc. Owners are reluctant to abandon well sites given the significant capital investment that decommissioning will entail. So the owner is just trying to appease this reluctance by stating that unused wells can be exploited in the future and therefore deprecation is premature. [0003] Considering that there are currently estimated to be more than 80,000 unused wells in Alberta, this situation has become a financial phenomenon that cannot be ignored...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24T10/10E21B41/00E21B43/30
CPCF24T50/00F24T10/13F03G7/04Y02E10/10F24T2010/56
Inventor P.凯恩斯J.史密斯
Owner EAVOR TECH INC
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