A hydrate kinetic inhibitor

A kinetic inhibitor, hydrate technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of unsuitable high supercooling degree, low cloud point, not widely used, etc., and reduce the cost of reagents , cost reduction, good inhibition effect
CN109705246BActive Publication Date: 2020-05-05GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
Publication Date
2020-05-05

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Abstract

The invention provides a hydrate kinetic inhibitor. The hydrate kinetics inhibitor is formulated from vinylimidazole copolymer and auxiliary agent; the hydrate kinetics inhibitor is poly N-vinyl caprolactam modified by terminal hydroxyl, and its structure is shown in formula I , wherein n=10~1000. The hydrate kinetic inhibitor is a hydroxyl-modified amide type hydrate kinetic inhibitor, and is a new type of high-efficiency hydrate inhibitor with low dosage, high cloud point and ability to withstand a large degree of supercooling.
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Description

Technical field:

[0001] The invention relates to the field of hydrate technology, in particular to a hydrate kinetic inhibitor. Background technique:

[0002] Natural gas hydrate is a non-stoichiometric clathrate complex with an ice-like appearance. The formation of gas hydrates in the process of natural gas transportation and processing will bring a series of hazards, such as blocking gas transmission pipelines, blocking blowout preventers and endangering deep-sea mining platform facilities, and even causing pipeline rupture in extreme cases, resulting in huge casualties and economic loss and environmental damage. Therefore, how to effectively prevent the formation of hydrates and avoid flow safety accidents caused by hydrate blockage is a very important and urgent issue for the entire oil and gas industry.

[0003] At present, injecting additives into pipelines is a relatively effective and economical hydrate control method. These chemical additives are therefore also r...

Claims

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