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Method and apparatus for extracting gas hydrate deposits

Inactive Publication Date: 2007-05-24
GAS HYDRATES CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, heating and disassociating such deposits to release the trapped natural gas is a problem.

Method used

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  • Method and apparatus for extracting gas hydrate deposits
  • Method and apparatus for extracting gas hydrate deposits
  • Method and apparatus for extracting gas hydrate deposits

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Embodiment Construction

[0008] Referring now to the drawings, a natural gas hydrate formation is generally illustrated at 100. The formation may be located at relatively shallow or relatively deep depth and conventional well drilling and well completion is sufficient to reach the formation 100.

[0009] A production well 101 is drilled and put into operation using conventional technology. A horizontal portion 102 extends into the gas hydrate formation 100 and a perforated production liner 103 is installed at the retrieval area of the natural gas hydrate formation 100. A pump 122 is located downhole in the production well 101 for the purpose of pumping the water produced from the disassociation of gas hydrates to the surface 111. Natural gas from the dissociated hydrate flows to the surface within the production casing where a compressor (not illustrated) is located to compress and transport the recovered gas.

[0010] A second drill hole, namely an injection and heating well is generally illustrated at 104. It...

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Abstract

An apparatus and method for disassociating natural gas from a deposit of natural gas hydrates and producing natural gas. A reactor module is located downhole in a heating and injection well. Water is provided to the reactor module where it is heated and a solvent is injected into the water prior to heating. The heated water and solvent passes to the deposit of natural gas hydrates where the natural gas is disassociated under the influence of the heat from the reactor module.

Description

BACKGROUND OF THE INVENTION [0001] Natural gas hydrate deposits are known to exist in numerous regions in great quantities in the world and contain many times the known producible reserves of conventional natural gas. Natural gas hydrates are crystals of principally methane within a lattice of water molecules and are formed naturally under conditions of low temperature and high pressure. The deposits can generally can be reached using conventional well drilling and well completion technology. However, heating and disassociating such deposits to release the trapped natural gas is a problem. SUMMARY OF THE INVENTION [0002] According to one aspect of the invention, there is provided a method of extracting natural gas from a deposit of natural gas hydrates, said method comprising supplying water to said deposit of said natural gas hydrates, heating said water supplied to said deposit of natural gas hydrates and flooding said deposit of said natural gas hydrates to disassociate said natu...

Claims

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Application Information

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IPC IPC(8): E21B43/24
CPCE21B43/2401E21B2043/0115E21B41/0099
Inventor LA ROVERE, THOMASSPENCER, HOMER
Owner GAS HYDRATES CORP