Device and method for seabed superficial zone non-diagenetic natural gas hydrate solid state fluidization mining

A solid-state fluidized mining and hydrate technology, which is applied in the direction of mining fluid, earth drilling, wellbore/well components, etc., can solve the problems of low economic efficiency, achieve high collection efficiency, compact structure, and reduce mining costs

Active Publication Date: 2017-07-11
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

At present, the hydrate mining device for the seabed surface is a self-propelled mining vehicle, but i

Method used

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  • Device and method for seabed superficial zone non-diagenetic natural gas hydrate solid state fluidization mining
  • Device and method for seabed superficial zone non-diagenetic natural gas hydrate solid state fluidization mining
  • Device and method for seabed superficial zone non-diagenetic natural gas hydrate solid state fluidization mining

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[0027] The present invention will be further described below in conjunction with the accompanying drawings. The protection scope of the present invention is not limited to the following:

[0028] Such as Figure 1~4 As shown, a submarine shallow non-diagenetic natural gas hydrate solid-state fluidized mining device includes a hydraulic jet nozzle assembly 1, a continuous hose 2, a hydrate collection ship 3 arranged on the sea surface, and a transfer station arranged in the seawater 4. The riser pipe 5 arranged in the surface layer 20 of the seabed. The riser pipe 5 is provided with a guide seat 6 in the guide seat 6 is provided with a hydraulic jet nozzle assembly 1, and the guide seat 6 can accurately control the water jet The nozzle assembly 1 recognizes and enters the hydrate ore layer 21 to ensure that the drill tool assembly forms a horizontal horizontal drilling. The hydraulic jet nozzle assembly 1 includes the nozzle body 7, the sleeve I8, the sleeve II9 and the nozzle 10....

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Abstract

The invention discloses a device for seabed superficial zone non-diagenetic natural gas hydrate solid state fluidization mining. The device comprises a waterpower jetting flow jet group, a continuous hose, a hydrate collecting ship arranged on sea surface, a transfer station arranged in sea water and a riser arranged in the surface layer of the seabed, a guiding seat is arranged in the riser, the waterpower jetting flow jet group is arranged in the guiding seat, outer portion of a jet body is sleeved with a transferring pipe connected to the transfer station, and a port is formed in portions, touching the jet body, of the transferring pipe; the transfer station is connected to the hydrate collecting ship, one end of the continuous hose is connected on the hydrate collecting ship, the other end of the continuous hose penetrates through the transferring pipe from top to bottom and communicates with flow channel of the jet body; and a method for mining seabed superficial zone non-diagenetic hydrate is disclosed. The device and method for seabed superficial zone non-diagenetic natural gas hydrate solid state fluidization mining has the benefit effects of saving energy sources, avoiding pollution to the sea, decreasing mining cost of natural gas and being high in mining efficiency.

Description

technical field [0001] The invention relates to the technical field of seabed natural gas hydrate exploitation, in particular to a device and method for solid-state fluidized exploitation of non-diagenetic natural gas hydrate in shallow seabed. Background technique [0002] Natural gas hydrate, also known as "combustible ice", is a "cage compound" formed by methane-based hydrocarbon gas and water under certain temperature and pressure conditions, and has a white crystalline structure. Its carbon content is equivalent to twice that of the world's total known reserves of energy sources such as coal, oil and natural gas. Therefore, natural gas hydrate, especially marine natural gas hydrate, is generally considered to be a new type of clean energy resource to replace coal, oil and natural gas in the 21st century, and it is also a new energy source with large reserves that have not yet been developed. [0003] According to whether the skeleton structure of the ore layer after hy...

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Application Information

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IPC IPC(8): E21B43/01
CPCE21B43/01E21B41/0099E21B43/29E21B43/24E21B43/36E21B49/00E21B43/35
Inventor 王国荣黄蓉刘清友周守为王雷振付强李清平
Owner SOUTHWEST PETROLEUM UNIV
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