Three-dimensional constant-overhang-pressure natural gas hydrate efficient simulation model

Abstract

The invention relates to a three-dimensional constant-overhang-pressure natural gas hydrate efficient simulation model. The three-dimensional constant-overhang-pressure natural gas hydrate efficient simulation model comprises a simulation bracket, a pressure simulation container and a hydrate simulation container; the simulation bracket comprises a pair of supporting blocks distributed in the up-down direction, the pressure simulation container is arranged in a gap between the two supporting blocks, and the pressure simulation container comprises a pressure container main body; and the hydratesimulation container is arranged in the pressure simulation container and driven by a feeding mechanism to go into or go out of the pressure container main body, and meanwhile, the pressure containermain body is further internally provided with a hydrate simulation container clamping mechanism. The three-dimensional constant-overhang-pressure natural gas hydrate efficient simulation model has the advantages that by additionally arranging the pressure simulation container on the outer side of the hydrate simulation container, when the hydrate simulation container deforms, the hydrate simulation container can be prevented from deforming by changing the pressure in the pressure simulation container, in this way, the hydrate simulation container can be overall made to be thin, the weight ofthe corresponding hydrate simulation container is also decreased, and experiments are facilitated.

Description

technical field [0001] The invention relates to the field of natural gas development, in particular to a three-dimensional constant overburden pressure high-efficiency simulation model of natural gas hydrate. Background technique [0002] Gas hydrate, also known as "combustible ice", is an ice-like crystalline substance distributed in deep-sea sediments or permafrost in land areas, formed by natural gas and water under high-pressure and low-temperature conditions. Because its appearance is like ice and it can burn when exposed to fire, it is also called "combustible ice". Its resource density is high, the global distribution is wide, and it has extremely high resource value, so it has become a long-term research hotspot in the oil and gas industry. Since the 1960s, some countries represented by the United States, Japan, Germany, my country, South Korea, and India have formulated research plans for the exploration and development of natural gas hydrates. So far, more than 2...

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Problems solved by technology

[0005] At present, the existing hydrate development stratification physical simulation container, when simulating the distribution of the hydrate layer in the underground, simulates problems such as high pressure and pressure changes in the container. Therefore, in order to avoid affecting the hydrate layer in the container Generally, the wall thickness of the container is generally thickened, which leads to a large volume, heavy weight, and inconvenient movement of the overall container, which is not conducive to the experiment.

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