Disulfonate gemini surfactant with high temperature and salt resistance and preparation method thereof

A bissulfonate and molecular technology, which is applied in the fields of sulfonate preparation, chemical instruments and methods, drilling compositions, etc., can solve the problems of alkali corrosion, poor oil displacement efficiency and high use concentration in ASP flooding , to achieve the effect of strong ability to reduce interfacial tension, excellent performance and easy biodegradation

Active Publication Date: 2011-10-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] One of the technical problems to be solved by the present invention is that the oil displacement agent containing surfactant in the prior art has poor oil displacement efficiency under high temperature and high salinity conditions, the use

Method used

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  • Disulfonate gemini surfactant with high temperature and salt resistance and preparation method thereof
  • Disulfonate gemini surfactant with high temperature and salt resistance and preparation method thereof
  • Disulfonate gemini surfactant with high temperature and salt resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (a) Synthesis of N, N-dilauroyl ethylenediamine dimethyl propionic acid

[0042] 300 grams (1.5 moles) of lauric acid, 267.8 grams (2.25 moles) of thionyl chloride and 4.5 grams of DMF were added to a 1000-milliliter four-necked flask equipped with a sealed mechanical stirrer, a thermometer, a condenser tube, etc., and reacted at 90 ° C for 3 After one hour, excess thionyl chloride was distilled off under reduced pressure to obtain lauroyl chloride. Add 45.0 grams (0.75 moles) of anhydrous ethylenediamine and 180 grams of 1,4-dioxane to another 2000 ml four-neck flask equipped with a sealed mechanical stirrer, a thermometer, and a condenser tube, heat up to 50° C., and slowly Add 165.0 grams (1.65 moles) of methyl methacrylate dropwise, continue the reaction for 3 hours after dropping, remove unreacted methyl methacrylate and solvent 1,4-dioxane under reduced pressure, and the residue is ethylenediamine dioxane. Methyl methpropionate. Use 50wt% sodium hydroxide to adj...

Embodiment 2

[0049] (a) Synthesis of N, N-dilauroyl hexamethylenediamine dimethylpropionic acid

[0050] With [Example 1] (a), the difference replaces 45.0 grams (0.75 moles) of anhydrous ethylenediamine with 87.0 grams (0.75 moles) of anhydrous hexamethylenediamine, and the rest are the same to obtain N, N-dilauroyl Hexamethylenediamine dimethyl propionic acid 328.6 grams, molar yield 67.2%.

[0051] (b) Synthesis of N,N-dilauroylhexamethylene diamine dimethyl propionate dipolyoxyethylene ether (n=3)

[0052] With [Example 1] (b), the difference is 328.6 grams (0.504 moles) of N, N-dilauroyl hexamethylenediamine dimethyl propionic acid instead of 306.2 grams (0.514 moles) of N, N-didodecanoic acid The consumption of acyl ethylenediamine dimethyl propionic acid and oxirane is 133.1g (3.024 moles), and the consumption of the basic compound of calcium is 7.5 grams to obtain N, N-dilauroyl hexamethylene diamine Dipolyoxyethylene methpropionate (n=3) was 409.5 grams, and the molar yield was ...

Embodiment 3

[0057] (a) Synthesis of N, N-didecanoyl butanediamine dimethylpropionic acid

[0058] With [Example 1] (a), the difference replaces 300.0 grams (1.5 moles) of lauric acid with 261.0 grams (1.5 moles) of capric acid, and replaces 45.0 grams (0.75 grams) of anhydrous butanediamine with 66.0 grams (0.75 moles). mol) anhydrous ethylenediamine, and the rest are the same to obtain 283.3 grams of N, N-didecanoyl butanediamine dimethylpropionic acid, and the molar yield is 66.5%.

[0059] (b) Synthesis of N, N-didecanoyl butanediamine dimethyl propionate dipolyoxyethylene ether (n=3)

[0060] With [Example 1] (b), the difference is 283.3 grams (0.499 moles) of N, N-didecanoyl butanediamine dimethyl propionic acid instead of 306.2 grams (0.514 moles) of N, N-dilauroyl The consumption of ethylenediamine dimethylpropionic acid and oxirane is 131.7g (2.994 moles), and the consumption of the basic compound of calcium is 6.4 grams to obtain N, N-didecanoyl butanediamine dimethyl Dipolyoxy...

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Abstract

The invention relates to a disulfonate gemini surfactant with high temperature and salt resistance and a preparation method thereof, mainly solving problems in the prior art that the oil driving agent containing the surfactant has poor oil displacement efficiency and high concentration of use under the condition of high temperature and salt, alkali takes the corrosion and the scale deposition to the ground floor and the oil well in ASP (alkali, surfactant and polymer) driving. The invention better solves the problems by taking the technical scheme, in which N,N-bisfatty acyl diamine dimethyl propanoic acid dipolyoxyethylene ether disulfonate with the molecular formula of FORMULA is adopted, wherein M is any one of metal ions of potassium, sodium and lithium, R1 is alkyl group of C9-C17, R2 is alkyl group of C2-C6, n is the addition number of ethoxy (EO) group and is any one integer of 2-7. The invention can be used in the production of tertiary oil recovery.

Description

technical field [0001] The invention relates to a high-temperature-resistant high-salt disulfonate gemini surfactant and a preparation method thereof, in particular to N, N-bis fatty acyl diamine dimethyl propionate dipolyoxyethylene ether disulfonate and its preparation method. Preparation. Background technique [0002] Chemical flooding is the main method of tertiary oil recovery, and surfactant flooding is considered to be a chemical agent that can greatly increase oil recovery, has a wide range of applications, and has the most development prospects. Surfactant plays an inestimable role in greatly enhancing oil recovery, whether it is used as a main agent or as an auxiliary agent for oil displacement. [0003] The main mechanism for the use of surfactants to enhance oil recovery is: after the oil field enters the high water cut period, the remaining oil is trapped in the pores of the reservoir rock in a discontinuous oil film, and the two main mechanisms acting on the o...

Claims

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Application Information

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IPC IPC(8): C08G65/337C08G65/26C07C309/10C07C303/32C09K8/584
Inventor 李应成沈之芹孙文彬张卫东
Owner CHINA PETROLEUM & CHEM CORP
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