Novel hydrate kinetic inhibitor and application thereof

A kinetic inhibitor, hydrate technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of high cost, large usage, environmental pollution, etc., and achieve lower reagent costs, lower costs, water solubility good effect

Active Publication Date: 2016-05-04
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermodynamic inhibitors have been widely used in the oil and gas industry, but they are used in large quantities (the concentration in aqueous solution must reach a mass fraction of 10% to 60% to have an ideal inhibitory effect), high cost and pollute the environment, and are gradually being eliminated

Method used

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  • Novel hydrate kinetic inhibitor and application thereof
  • Novel hydrate kinetic inhibitor and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Add a new hydrate inhibitor aqueous solution with a mass concentration of 0.1% and a weight average molecular weight of 120,000 into the reactor. The experimental procedure is the same as above. The results show that the induction time of hydrate formation in this system is 93 minutes, and the reaction completion time is 255 minutes, which has good inhibition. Effect.

Embodiment 2

[0038] Add a new hydrate inhibitor aqueous solution with a mass concentration of 1% and a weight-average molecular weight of 120,000 into the reactor. The experimental procedure is the same as above. The results show that the induction time of hydrate formation in this system is 114 minutes, and the reaction completion time is 278 minutes, which has good inhibition. Effect.

Embodiment 3

[0040] Add a new hydrate inhibitor aqueous solution with a mass concentration of 2% and a weight average molecular weight of 120,000 into the reactor. The experimental procedure is the same as above. The results show that the induction time of hydrate formation in this system is 123 minutes, and the reaction completion time is 315 minutes, which has good inhibition. Effect.

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PUM

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Abstract

The invention relates to a novel hydrate kinetic inhibitor, which is formed by polymerization of mono-bromo carboxylic acid and N-vinylformamide; a structural formula of the novel hydrate kinetic inhibitor is selected from one of the following chemical formula shown in the description; in the chemical formulas, R1 is a fatty carboxylic group of C2 to C6; n is equal to 40 to 3000. As a kinetic inhibitor polymer, a monomer of the novel hydrate kinetic inhibitor disclosed by the invention has more carboxyl, so that the polymer is very high in water solubility, and has broad applicability.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a novel hydrate kinetic inhibitor and application thereof. Background technique [0002] Natural gas hydrate is an ice-like crystal formed by low-boiling hydrocarbon gases (CH4, C2H6, C3H8, etc.) and water molecules under low temperature and high pressure conditions. During the transportation of oil and natural gas, due to the conditions of low temperature and high pressure, natural gas hydrate is easily formed in the pipeline. The formation of gas hydrates can block pipelines and even cause pipelines to burst, causing serious hazards. [0003] Since Hammerschmidt discovered that natural gas hydrates caused oil and gas pipeline blockage in 1934, many researchers have devoted themselves to the research of hydrate inhibitors and synthesized various inhibitors. There are two main methods to prevent hydrate formation, namely physical methods and chemical metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524C08F126/02
CPCC08F126/02C09K8/524C09K2208/22
Inventor 梁德青张倩龙臻何勇
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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