Seabed natural gas hydrate slurry decomposition separation and mud sand removal modular mining system

Abstract

The invention relates to a seabed natural gas hydrate slurry decomposition separation and silt removal modular mining system, which comprises a seabed excavating robot, a seabed decomposition separation and siltremoval gathering and transportation treatment station, an offshore mining operation platform and a seabed silt backfilling robot, wherein the seabed decomposition separation and silt removal gathering and transportation treatment station realizes fast connection with the seabed excavating robot, the offshore mining operation platform and the seabed silt backfilling robot through an integrated passage and fast plugs; devices in the gathering and transportation station are connected with fast sockets arranged on the inner wall of a sealed cabin through the fast plugs; the hydrate slurry is stored, decomposed and separated; the separated hydrate slurry is conveyed to an offshore platform; the separated silt is backfilled in situ by the seabed silt backfilling robot. The system has the beneficial effects that the problems of great energy consumption in the conveying process of directly lifting silt-containing slurry, easy occurrence of sand blockage in the pipeline conveying process, pipe explosion due to pressure jump in the pipeline and the like are solved; fast connection, operation and maintenance can be conveniently realized among the modules.

Description

technical field [0001] The invention relates to the technical field of development of unconventional oil and gas resources, in particular to a modular exploitation system for decomposition, separation and sediment removal of seabed natural gas hydrate slurry. Background technique [0002] Coal, oil, and natural gas are the main mineral energy sources in the world today. However, it is estimated that in another 40 years, human beings will face the situation of the depletion of these mineral energy sources. As a result, the development and utilization of natural gas hydrate, an energy source with huge reserves called "combustible ice", has begun to enter the attention of many countries. In recent years, the contradiction between my country's energy supply and demand has become increasingly prominent. Traditional fossil fuels can no longer meet the requirements of my country's economic development and environmental protection. In 2014 alone, 310 million tons of crude oil was i...

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art, to provide a subsea natural gas hydrate slurry decomposition separation and sediment removal modular mining system, which solves the current defect of directly using pipelines to transport hydrate slurry, that is, direct lifting The energy consumption is huge during the transportation of silt-containing slurry, and problems such as sand blockage and pipe explosion due to sudden pressure changes in the pipeline are prone to occur during pipeline transportation.

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