Visualized swinging kettle device for inhibiting pipeline hydrate blockage and method

Abstract

The invention provides a visualized swinging kettle device for inhibiting pipeline hydrate blockage and a method, and belongs to the field of the flow safety control of oil and gas transporting pipelines. The device comprises a main high-pressure visual kettle, a driving control system, a gas and liquid injection and discharge system, a temperature control system and a data collection system. Themain high-pressure visual kettle is used for providing a full-visual condition and performing real-time observation on the change of the growth habit of a hydrate in a pipe. The driving control systemcan be used for accurately controlling the swinging frequency and angle of the main high-pressure visual kettle, to effectively simulate the flow, in a pipeline, of liquid. The air-cooling refrigeration of a low-temperature and constant-temperature chamber is adopted for the temperature control system, and the problem that the surface of the visual kettle is fogged is solved. The data collectionsystem is used for collecting the temperature and pressure change values, in generation and decomposition processes, and the image, in a dynamic process, of the hydrate. The visualized swinging kettledevice is applied to the search of hydrate pipeline blockage and inhibitor evaluation, is easy to set up, simple and convenient to operate, and low in manufacturing cost, and can be used for providing technical and data support for the problem of the flow safety guarantee of a deep-sea oil and gas pipeline in a transportation process.

Description

technical field [0001] The invention belongs to the technical field of flow safety control of oil and gas transportation pipelines, and relates to a visual swing kettle device and method for suppressing pipeline hydrate blockage. Background technique [0002] Natural gas hydrate is a solid crystalline compound mainly formed by methane molecules and water molecules. It looks like ice, so it is also called "combustible ice". In the process of offshore oil and gas exploitation, as the water depth continues to deepen, the high pressure, low temperature, rich gas and water content in the submarine pipeline are favorable conditions for the formation of natural gas hydrate. Once hydrates are generated and deposited in a large amount in the pipeline, the pipeline will be blocked, which will seriously reduce the pipeline transportation capacity. If necessary, the oil and gas production must be interrupted to clear the blockage, which will bring huge economic losses. In extreme cases...

AI Technical Summary

Problems solved by technology

The experimental conditions of the flow loop are the closest to the field conditions, but the equipment is large-scale and the application cost is expensive. Although the static reactor has a wide range of applications, it is difficult to reproduce the fluid flow conditions in the real pipeline

The existing swing reactor provides fluid flow conditions, but there is still a large difference from the flow conditions of the actual pipeline, and the degree of visibility is not high

In addition, the existing swing reactor is small in size and cannot truly simulate pipeline hydrate blockage

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