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Natural gas hydrate microwave in-situ development system powered by wind energy

A technology for developing systems and natural gas, applied in wind power generation, wind motor combinations, wind engines, etc., can solve problems such as energy consumption, environmental pollution, etc., and achieve the effects of cost reduction, high economic benefits, and low cost

Inactive Publication Date: 2010-06-09
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology

However, the exploitation of natural gas hydrate directly by thermal shock method is likely to cause energy consumption and environmental pollution.

Method used

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  • Natural gas hydrate microwave in-situ development system powered by wind energy
  • Natural gas hydrate microwave in-situ development system powered by wind energy

Examples

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Embodiment

[0016] To design an ocean floor gas hydrate natural gas well with a daily gas production of 50,000 cubic meters, based on the gas storage ratio of 1:160, it is necessary to heat and decompose 0.03125 million cubic meters of hydrate, and the hydrate content in the reservoir sediment is taken as 40%. The reservoir to be heated is 0.07813 million cubic meters. Heating and decomposing hydrates will increase the reservoir temperature by 8 degrees Celsius, and the hydrate decomposition heat is 53kJ / mol, so the estimated heating power is 1.5MW. Accordingly, the average output power of the configured high-power microwave generating device 2 should be 1.5MW, the frequency can be 915MHz commonly used in industry, and the microwave transmission line adopts the national standard BJ-9 waveguide. The multi-stage permanent magnet synchronous wind turbine has the characteristics of no gear, low operating speed, light weight, high reliability and low maintenance. Therefore, this example is equ...

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Abstract

The invention discloses a natural gas hydrate microwave in-situ development system powered by wind energy, which comprises a mining platform and a gas storage device, wherein the mining platform is arranged on a sea surface, and a wellhead device is arranged on the mining platform and faces the sea surface; the natural gas hydrate microwave in-situ development system is characterized by comprising a wind generating set, a microwave generating device and an underground microwave transmission line, wherein the wind generating set and the microwave generating device are arranged on the mining platform, one end of the microwave generating device is connected with the wind generating set, the other end thereof is sequentially connected with a microwave converting device and a microwave detecting device through the underground microwave transmission line, one end of the underground microwave transmission line is connected with the microwave detecting device, and the other end of the underground microwave transmission line is connected with a radiating antenna arranged near an undersea natural gas hydrate storage layer after extending inwards from the wellhead device; and a gas production passage is arranged at the side of the underground microwave transmission line, and the upper end of the gas production passage is communicated with the gas storage device. The development system of the invention can efficiently convert renewable energy sources into the energy needed for decomposing the natural gas hydrate in the storage layer, the action speed is high and no pollution is generated in the whole process.

Description

technical field [0001] The invention relates to a seabed natural gas hydrate exploitation system, in particular to a natural gas hydrate microwave in-situ development system powered by wind energy. Background technique [0002] Gas hydrate is an ice-like, non-stoichiometric clathrate crystalline compound composed of water and natural gas under low temperature and high pressure conditions. 1m under standard condition 3 The hydrate can store about 160m 3 of natural gas. Natural gas hydrate can burn when exposed to fire, commonly known as "combustible ice". Natural gas hydrates are mostly stored in seabed and terrestrial permafrost deposits. It is estimated that the carbon stored in gas hydrates is about the carbon content of all proven fossil fuels (including coal, oil and natural gas) Twice the sum, natural gas hydrate is considered to be the most promising alternative energy source in the 21st century, with the characteristics of wide distribution, large storage scale an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/01F03D9/00F03D9/25
CPCY02E10/72E21B2043/0115E21B41/0099
Inventor 梁德青何松李栋梁
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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