A device and method for solid-state fluidized production of non-diagenetic natural gas hydrate in shallow seabed

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 and achieve the effects of high collection efficiency, energy saving and compact structure

Active Publication Date: 2019-01-18
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 it is not suitable for hydrates with a certain depth in the shallow seabed and the economy is not high.

Method used

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  • A device and method for solid-state fluidized production of non-diagenetic natural gas hydrate in shallow seabed
  • A device and method for solid-state fluidized production of non-diagenetic natural gas hydrate in shallow seabed
  • A device and method for solid-state fluidized production of non-diagenetic natural gas hydrate in shallow seabed

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Embodiment Construction

[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 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 drilling tool assembly forms horizontal horizontal drilling. The hydraulic jet nozzle assembly 1 includes the nozzle body 7, the sleeve I8, the sleeve II9 and the nozzle 10. The ri...

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Abstract

The invention discloses a non-diagenetic natural gas hydrate solid-state fluidization exploitation device in the shallow layer of the seabed. The water-resisting conduit in the surface layer of the seabed is provided with a guide seat inside the water-resisting conduit, and a combination of hydraulic jet nozzles is arranged inside the guide seat. The outside of the nozzle body is provided with a delivery pipe connected to the transfer station. The connection between the delivery pipe and the nozzle body There is an opening at the contact point, the transfer station is connected to the hydrate collection ship, one end of the continuous hose is connected to the hydrate collection ship, and the other end runs through the delivery pipe from top to bottom and connects to the flow channel of the nozzle body; it also discloses The acquisition method of layer non-diagenetic hydrate. The invention has the beneficial effects of saving energy, avoiding pollution to the ocean, reducing the cost of natural gas exploitation, and high collection efficiency.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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