Unlock instant, AI-driven research and patent intelligence for your innovation.

Amphiphilic carbon quantum dot foam stabilizer and preparation method thereof

A carbon quantum dot and amphiphilic technology, applied in the field of amphiphilic carbon quantum dot foam stabilizer and its preparation, can solve the problems of poor foam stability and the like

Inactive Publication Date: 2021-06-08
SOUTHWEST PETROLEUM UNIV +1
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides an amphiphilic carbon quantum dot foam stabilizer for the problem of poor foam stability of the current compound foam stabilizer, which is obtained by condensation and reflux reaction of citric acid and oleylamine under melting conditions, and its foam stability Good, and raw materials are cheap and readily available

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Amphiphilic carbon quantum dot foam stabilizer and preparation method thereof
  • Amphiphilic carbon quantum dot foam stabilizer and preparation method thereof
  • Amphiphilic carbon quantum dot foam stabilizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This embodiment prepares a kind of amphiphilic carbon quantum dot foam stabilizer, and its specific preparation method is:

[0026] S1: Weigh citric acid and oleylamine according to the formula, stir and heat the citric acid to 160°C, stir and keep warm for 2 hours to obtain molten citric acid; the stirring speed is 1500r / min;

[0027] S2: Introduce nitrogen into the molten citric acid for 30 minutes to discharge the oxygen in the molten citric acid;

[0028] S3: drop oleylamine into the deoxygenated citric acid, heat and stir, keep the stirring speed, and reflux at 280° C. for 8 hours to obtain foam stabilizer A.

Embodiment 2

[0030] This embodiment prepares a kind of amphiphilic carbon quantum dot foam stabilizer, and its specific preparation method is:

[0031] S1: Weigh citric acid and oleylamine according to the formula, stir and heat the citric acid to 155°C, stir and keep warm for 2 hours to obtain molten citric acid; the stirring speed is 2000r / min;

[0032] S2: Introduce nitrogen into the molten citric acid for 40 minutes to discharge the oxygen in the molten citric acid;

[0033] S3: drop oleylamine into the deoxygenated citric acid, heat and stir, keep the stirring speed, and reflux at 320° C. for 5 hours to obtain foam stabilizer B.

Embodiment 3

[0035] This embodiment prepares a kind of amphiphilic carbon quantum dot foam stabilizer, and its specific preparation method is:

[0036] S1: Weigh citric acid and oleylamine according to the formula, stir and heat the citric acid to 165°C, stir and keep warm for 3 hours to obtain molten citric acid; the stirring speed is 1800r / min;

[0037] S2: Introduce nitrogen into the molten citric acid for 60 minutes to discharge the oxygen in the molten citric acid;

[0038] S3: drop oleylamine into the deoxygenated citric acid, heat and stir, keep the stirring speed, and reflux at 300° C. for 6 hours to obtain foam stabilizer C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an amphiphilic carbon quantum dot foam stabilizer as well as a preparation method and application thereof, and relates to the technical field of oil and gas development. The chemical formula of the foam stabilizer is .-CONH-C18H34, and the preparation method of the foam stabilizer comprises the following steps: S1, weighing citric acid and oleylamine according to a formula, and stirring and heating the citric acid until the citric acid is molten to obtain molten citric acid; S2, introducing nitrogen into the molten citric acid, and discharging oxygen in the molten citric acid; S3, dropwise adding oil amine into the deoxygenated citric acid, and performing heating, stirring, and condensing and refluxing to obtain the foam stabilizer. The amphiphilic carbon quantum dot foam stabilizer disclosed by the invention is obtained by condensation reflux reaction of citric acid and oleylamine under a melting condition, the foam stability of the amphiphilic carbon quantum dot foam stabilizer is good, and the raw materials are low in price and easy to obtain.

Description

technical field [0001] The invention belongs to the technical field of oil and gas development, and in particular relates to an amphiphilic carbon quantum dot foam stabilizer and a preparation method thereof. Background technique [0002] In the initial stage of gas well development, gas wells generally see water, and most gas wells have no water-free gas production period or a short water-free gas production period. After the gas well breaks through water, the wellhead pressure and gas production rate drop rapidly, and the liquid accumulation at the bottom of the well due to the decrease of the liquid carrying capacity will lead to the reduction of production or even the stop of blowout of the gas well. With the prolongation of the development time, the water produced by the gas well will seriously affect the normal production of the gas well and the development effect of the gas field. In view of this situation, drainage and gas recovery technology must be developed in ti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/03C07C231/02
CPCC07C233/03C07C231/02C07B2200/11
Inventor 张太亮郑存川赖丽丹张梦娇赵艳
Owner SOUTHWEST PETROLEUM UNIV