Dynamics inhibitor, preparing method and compound inhibitor

A kinetic inhibitor and inhibitor technology, applied in mechanical equipment, gas/liquid distribution and storage, pipeline system, etc., can solve the problems of insufficient inhibition ability, short inhibition time, low supercooling degree, etc.

Inactive Publication Date: 2017-06-30
SOUTHWEST PETROLEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, kinetic inhibitors still generally have disadvantages such as low supercooling degree, insufficient inhibition ability, and short inhibition time, which cannot meet the needs of modern industry.

Method used

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  • Dynamics inhibitor, preparing method and compound inhibitor
  • Dynamics inhibitor, preparing method and compound inhibitor
  • Dynamics inhibitor, preparing method and compound inhibitor

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Embodiment Construction

[0028] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific examples. It should be noted that the following examples are only preferred implementations of the present invention, and should not be regarded as limiting the present invention, and the protection scope of the present invention should be based on the scope defined in the claims. For those skilled in the art, without departing from the spirit and scope of the present invention, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

[0029] One, the preparation of kinetic inhibitor of the present invention

[0030] 1.1 Selection of reactive monomers

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Abstract

The invention discloses a dynamics inhibitor, a preparing method of the dynamics inhibitor and a compound inhibitor. The dynamics inhibitor is obtained through monomer copolymerization; a monomer comprises vinyl pyrrolidone, vinyl-epsilon-caprolactam and allyl polyethenoxy ether-1000; the compound inhibitor is made by mixing 0.6wt% of the above dynamics inhibitor and 5wt%-9wt% of a thermodynamics inhibitor according to the size ratio being 1:1; and the thermodynamics inhibitor is selected from ethyl alcohol, ethylene glycol and glycerol. The dynamics inhibitor is low in using dosage, low in inhibition temperature, efficient and reliable, and the maximum inhibition temperature can reach -8 DEG C; and according to the compound inhibitor, the maximum inhibition temperature can reach -11 DEG C.

Description

technical field [0001] The invention relates to a kinetic inhibitor for inhibiting natural gas hydrate, a preparation method thereof and a composite inhibitor, belonging to the technical field of petroleum and natural gas chemical industry. Background technique [0002] Natural gas hydrate is a white dense crystalline solid formed by water molecules and natural gas molecules under low temperature and high pressure conditions, and is a compound with a cage structure. In the actual process, after the gas well is put into production, because the formation energy will decrease gradually, the wellhead pressure will gradually decrease, and then the water content of the natural gas will increase. Easy to form gas hydrate. When natural gas is under high pressure, hydrates can be formed even at room temperature. In the process of natural gas pipeline transportation, gas field high pressure gas gathering pipelines are easy to form natural gas hydrate, this is because the temperature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/16C08F283/06C08F226/10C08F226/06
CPCF17D1/16C08F283/065C08F226/10C08F226/06
Inventor 全红平李鹏飞黄志宇段文猛颜雨
Owner SOUTHWEST PETROLEUM UNIV
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