System for integrally exploiting marine energy resource

Abstract

The invention relates to a system for integrally exploiting marine energy resource, which is characterized in that the system comprises a wave energy power generation module, a traditional oil-gas production module, a marine temperature difference energy power generation module, a tide and ocean current underground power generation module, and a seabed natural gas hydrate exploitation module; thewave energy power generation module generates the power by the marine waves; the marine temperature difference energy power generation module generates the power by the marine temperature difference;the tide and ocean current underground power generation module generates the power by the tide and the ocean current; the traditional oil-gas production module, the wave energy power generation module, the marine temperature difference energy power generation module and the tide and ocean current underground power generation module share a living foundation equipment and a power foundation equipment, and share a drilling equipment and a seabed oil-gas conveying pipeline along with the seabed natural gas hydrate exploitation module; the electric energy output by the wave energy power generationmodule, the marine temperature difference energy power generation module and the tide and ocean current underground power generation module is externally output by the cables depending on the seabedoil-gas conveying pipelines; and the natural gas hydrate exploitation module exploits the natural gas hydrate by a ocean surface warm-water injection method and a carbon dioxide replacing method.

Description

technical field [0001] The invention relates to a marine energy exploitation device, in particular to an integrated marine energy development system. Background technique [0002] At present, the global offshore oil and gas resources account for 34% of the total global oil resources. The accumulated proven reserves are about 40 billion tons, and the proven rate is about 30%. It is still in the early stage of exploration. Therefore, in the foreseeable future, the traditional petroleum industry The growth point of oil and gas will be in the marine field. At the same time, the ocean also contains abundant new energy sources, such as natural gas hydrate, tidal energy, surging ocean currents, wind energy, and ocean temperature difference energy. Due to the depletion of traditional oil and gas energy sources, the slowdown in the growth rate of newly discovered reserves of oil and gas resources, the surge in energy demand for rapid economic development, and the increasing emphasis...

AI Technical Summary

Problems solved by technology

However, after a period of time, due to the heat absorption of natural gas hydrate decomposition, the energy of the formation is reduced, the decomposition rate of natural gas hydrate slows down, and even the formation water freezes and the secondary generation of natural gas hydrate forces the production to be interrupted; in addition, the natural gas hydrate decomposition also It will make the natural gas hydrate formation deficient, the formation will subside, and threaten the offshore engineering facilities, so there will be a big safety hazard

The chemical agent injection method is to inject some chemical solutions into the gas hydrate layer, and these chemical substances can make the gas hydrate unstable and decompose. The cost of injecting chemical agents is too high, and it will cause a certain degree of pollution to the marine environment

The current heat injection method is mainly to inject high-temperature hot water and high-temperature steam heated on the production platform or on the ground into the natural gas hydrate layer; however, heating hot water and steam on the production platform or on the ground requires a lot of energy, which leads to The heat injection method has high cost and complex equipment, which makes the economics of natural gas hydrate production unfavorable

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