Device used for X-ray CT equipment to observe natural gas hydrate growth characteristics in blind pipe

Abstract

The invention provides a device used for X-ray CT equipment to observe growth characteristics of natural gas hydrate in a blind pipe and belongs to the field of flow assurance in the delivery process of oil and gas. In-situ generation of the natural gas hydrate in the blind pipe of an oil-gas pipeline can be simulated, and growth conditions of the natural gas hydrate can be observed through the X-ray CT equipment. After liquid is injected into a reaction kettle and after leakage detection, gas is injected into the reaction kettle through a constant-pressure pump, and consumption of the gas is recorded to evaluate the growth conditions of the hydrate. During detection, a magnetic stirring system is used for stirring liquid in the reaction kettle, simulating flow of a liquid phase in the pipeline and promoting mutual cooperation of gas-liquid phases to generate hydrate. Every other certain period, X-ray CT photographing is conducted in the reaction kettle, the growth condition of hydrate in the blind pipe is observed, and growth characteristics of the hydrate in the blind pipe are studied. Measuring results are used for on-site guidance of a seabed oil-gas delivery system, and a powerful theoretical support can be provided for deep studying of hydrate risk control technology.

Description

technical field [0001] The invention relates to a device for X-ray CT equipment to observe the growth characteristics of natural gas hydrate in a blind pipe, and belongs to the field of flow guarantee in the oil and gas transportation process. Background technique [0002] With the continuous exploitation of land and offshore oil resources, people are gradually turning their attention to the deep sea area, and deep water oil and gas extraction has become an important trend in oil and gas exploration and development. Therefore, the safety of oil and gas pipeline flow in deep sea areas has become a major problem in the petroleum industry. In the deep sea area, the high pressure and low temperature environment can easily lead to the formation of hydrates, which will cause pipeline blockage, increase the pressure in the pipeline and even cause pipeline damage, which will bring huge economic losses and safety hazards to industrial production. Hydrate pipeline blockage in deep se...

AI Technical Summary

Problems solved by technology

The current research on hydrates is still mainly focused on the formation of hydrates in the porous media of reactors, oil-water emulsions, and pipeline multiphase flow systems, which are not enough to explore the characteristics of hydrate formation in dead-legs

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