Experimental device for hydrate formation in combined multiphase fluid pipeline

Abstract

The invention provides an experimental device for forming a hydrate in a combined multi-phase fluid pipeline, and belongs to the field of hydrate flowing safety. The device is characterized in that a liquid phase is arranged in a reaction kettle, and a gas is injected into the reaction kettle by boosting of a gas booster pump; a window on the cylinder body of the reaction kettle can be used for observing the forming condition of hydrate in the reaction kettle; a cooling liquid with which a jacket outside the reaction kettle is filled is used for controlling temperature of the reaction kettle, and temperature and circulation of the cooling liquid is controlled by a temperature-control water bath; and temperature and pressure signals in the hydrate forming process are collected by a data collection system. Two methods are provided for using the device, according to the first using method, the reaction kettle is used as a shaking kettle, the reaction kettle on a shaking rack is driven by a motor in a power shaking system, the center of the kettle body is used as a fulcrum, and two ends of the reaction kettle swing up and down, so that gaseous and liquid phases in the reaction kettle are driven to be mutually mixed; and according to the second using method, the reaction kettle is used as a stirring kettle, a magneton in the reaction kettle is driven to rotate by an external magnetic field which is provided by a magnetic stirrer in a magnetic stirring system, and gaseous and liquid phases in the reaction kettle are stirred.

Description

technical field [0001] The invention relates to an experimental device for hydrate formation in a combined multiphase fluid pipeline, which belongs to the field of hydrate flow safety. Background technique [0002] With the development of offshore oil and gas resources, the safety of pipeline flow in deep sea has become a major issue in the energy industry. Hydrate blockage of deep-sea pipelines is one of the important issues of flow safety. In the process of oil and gas transportation, if the conditions in the pipeline are conducive to the formation of hydrates and make them exist stably, the hydrates in the pipeline will generate hydrates and cause the pressure in the pipeline to increase or even blockage, which will cause safety problems and cause major losses. [0003] The traditional method to suppress the formation of hydrate in the pipeline is to inject hydrate thermodynamic inhibitors into the oil and gas pipeline, heat the oil and gas pipeline and reduce the pressu...

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Problems solved by technology

As the waters of oil and gas exploitation become deeper and deeper, traditional methods are limited by economic factors

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