Exploiting and safe storage and transportation technology for deep sea combustible ice

Abstract

The invention relates to an exploiting and safe storage and transportation technology for deep sea combustible ice. In order to solve the technical problems that in the prior art, under the complex deep sea environment, the exploiting difficulty and control difficulty of combustible ice are huge, the implementation cost input is too high, and various technical problems exist in the respect of safe storage and transportation, the exploiting and safe storage and transportation technology for the deep sea combustible ice is provided. The characteristic that methane gas can have a secondary generation phenomenon under the environment conditions of suitable water temperature and pressure, and gas and water can be combined again to form solid natural gas hydrates is utilized. A special device is arranged on the seabed, large quantities of pure solid combustible ice finished products are obtained according to needs through a special method, and safe storage and transportation are achieved. The whole exploiting process is safe and controllable, a conveying pipeline which is necessary for an oil and gas well in the past and leads to a conveying platform is omitted, and the exploiting and safe storage and transportation technology for the deep sea combustible ice is a complete and independent exploiting and storage and transportation technology for the deep sea combustible ice.

Description

technical field [0001] The invention relates to the technical field of exploitation of marine oil and gas resources, in particular to a technique for exploitation and safe storage and transportation of deep-sea combustible ice. Background technique [0002] Combustible ice is natural gas hydrate. It is an ice-like crystal formed by methane gas and water under special conditions of high pressure and low temperature. Multiple volumes of natural gas and 0.8 cubic meters of water, and only water and a small amount of carbon dioxide are left after burning, and almost no residue is produced. The global mineral reserves are huge, and they are mostly distributed in deep seabed rock formations and permafrost zones. Combustible ice is used as a Clean and green future energy has many excellent characteristics, which brings new energy prospects to mankind. Since combustible ice in nature is mostly in a solid state, it cannot be ejected by itself like oil and natural gas, and solid hydr...

AI Technical Summary

Problems solved by technology

[0003] In order to solve various technical problems in the complex deep-sea environment, such as the difficulty of mining and handling combustible ice, the high investment in implementation costs, and the safety storage and transportation, the present invention proposes a deep-sea combustible ice mining and safe storage and transportation Technology: A huge underwater collection device and forming device are installed above the seabed mining area. After the hydrate in the deep-sea mineral layer is decomposed, a large amount of methane gas is continuously gushing out with the fluid in the form of bubbles. The underwater collection device The collected methane gas is recombined with water to form hydrate, which is then packaged and molded by the molding device, so that a large amount of pure and consistent solid combustible ice products can be obtained in situ on the seabed, and then the solid combustible ice products Packed into the special outer packaging for storage and transportation, so as to achieve the purpose of safe storage and transportation