Experimental device and method for simulating plugging mechanism of gas hydrate under bubble flow

Abstract

The invention belongs to the field of oil and gas transportation engineering and relates to an experimental device and method for simulating a plugging mechanism of gas hydrate under bubble flow, and aims to realize study for a gathering formation mechanism of the gas hydrate under bubble flow in a metal pipeline indoors, provide precise model parameters and effective data for simulating plugging formation of the gas hydrate under bubble flow in the metal pipeline, determine plugging formation speed of the gas hydrate at different bubble flow rates and simulate gathering formation mechanisms of various metal pipeline hydrates in deep water environment. The experimental device comprises a pressure control system, a gas injection system, an experimental simulation system, a cooling system, a circulating system, a water inlet and outlet system and a monitoring and storing system, wherein the pressure control system, the gas injection system, the cooling system, the circulating system and the water inlet and outlet system are all connected with the experimental simulation system and serve for the experimental simulation system, and the adhering and gathering formation mechanism of the formed hydrate in the metal pipeline is simulated and studied by controlling gas injection speed and flow rate of a liquid in a vertical pipe.

Description

technical field [0001] The invention belongs to the field of oil and gas transportation engineering, and relates to a simulation experiment device and method for gas hydrate blocking mechanism under bubble flow. Background technique [0002] With the increasing scarcity of land oil resources and the rising global oil and gas demand, people are exploring and developing offshore oil and gas resources more and more, especially intensifying the development of deep water oil and gas resources. Underwater mining, especially in deep water conditions, and pipeline transportation of oil and gas resources have become possible, but there are many important problems and environmental hazards in the process of deep water oil and gas mining and transportation, the most obvious and serious of which is the water pollution in deep water areas. The blockage accident of the lower transportation pipeline. Blockage of underwater transportation pipelines in deep water areas will interrupt transp...

AI Technical Summary

Problems solved by technology

Underwater mining, especially in deep water conditions, and pipeline transportation of oil and gas resources have become possible, but there are many important problems and environmental hazards in the process of deep water oil and gas mining and transportation, the most obvious and serious of which is the water pollution in deep water areas. Blockage accident of lower transportation pipeline

The blockage of the underwater transportation pipeline in the deep water area will cause the interruption of transportation, cause leakage, pollute the marine environment, make it difficult for the oil and gas transportation industry to operate normally, and the consequences are very serious

[0003] However, for a long time, due to the limitations of deep water environment, pipeline blockage and other conditions, there are not many studies on the use of hydrate plugging of oil spilled metal pipelines in underwater, especially in deep water environments, and the research on the formation of hydrates in deep water environments and The formation of blockages in various metal pipelines is not deep enough. At present, there is no simulation experimental device and method at home and abroad that can simulate the blocking mechanism of gas hydrates flowing down in bubbles.

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