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Amide group-containing hydroxysulfobetaine and preparation and application thereof

A technology containing amide group hydroxysulfobeet and amide group hydroxysulfobeet is applied in the directions of sulfonate preparation, chemical instrument and method, drilling composition, etc., and can solve the problem of poor salt tolerance of anionic surfactants , poor stability, non-ionic surfactants are not resistant to high temperature and other problems, to achieve the effect of improving oil recovery, good temperature resistance and salt resistance

Active Publication Date: 2013-11-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two surfactants are not suitable for high temperature and high salinity reservoirs
Anionic surfactants have poor salt resistance and are easy to precipitate in water with high salinity; nonionic surfactants are not resistant to high temperatures, have poor stability and high adsorption capacity in the formation
However, when the two surfactants are compounded, severe chromatographic separation effects will occur.

Method used

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  • Amide group-containing hydroxysulfobetaine and preparation and application thereof
  • Amide group-containing hydroxysulfobetaine and preparation and application thereof
  • Amide group-containing hydroxysulfobetaine and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: the synthesis of erucic acid amido sulfobetaine

[0029] Put 0.1 mol of erucic acid and 0.1 mol of N,N-dimethyl-1,3-propanediamine into a high-pressure reactor, keep the temperature at 200° C., and react for 3 hours. Mix 0.1 mol of tertiary amine containing erucamide group obtained by the reaction with 0.1 mol of sodium 3-chloro-2-hydroxypropanesulfonate, keep the temperature at 80° C., and react for 3 hours to obtain erucamide hydroxysulfobetaine. The obtained product was separated and purified, and the calculated conversion rate was 95.3%.

[0030]

[0031] Infrared analysis was carried out to the obtained product, and the test results were as follows: figure 1 shown. It can be seen that 3400cm -1 The nearby peak is O-H stretching vibration, 3350cm -1 and 3180cm -1 Nearby is the characteristic peak of N-H stretching vibration, 2900cm -1 Nearby is CH 2 The characteristic peak of the antisymmetric stretching vibration, 1470cm -1 at CH 2 The sci...

Embodiment 2

[0032] Embodiment 2: the synthesis of alkyl amido sulfobetaine

[0033] Put 0.1 mol of saturated octadecanoic acid and 0.1 mol of N,N-dimethyl-ethylenediamine into an autoclave, keep the temperature at 150° C., and react for 3 hours. Mix 0.1 mol of tertiary amines containing octadecylamide groups obtained by the reaction with 0.1 mol of 3-chloro-2-hydroxypropanesulfonate sodium, keep the temperature at 80°C, and react for 3 hours to obtain octadecylamide hydroxysulfonate base betaine. Separation and purification, the calculated conversion rate is 91.7%. Elemental analysis of the product (theoretical calculation value in brackets): C 60.85% (60.98%); H 10.72% (10.57%); N 5.86% (5.69%); S 6.67% (6.50%).

[0034]

Embodiment 3

[0035] Embodiment 3: the synthesis of octylphenyl amido sulfobetaine

[0036] Put 0.1 mol of 4-octylbenzoic acid and 0.1 mol of N-methyl-N-ethyl-1,3-propanediamine into a high-pressure reactor, keep the temperature at 180°C, and react for 3 hours. Mix 0.1 mol of tertiary amine containing octylphenylamide group obtained by the reaction with 0.1mol of 3-chloro-2-hydroxypropanesulfonate sodium, keep the temperature at 80°C, and react for 3 hours to obtain octylphenylamidohydroxysulfonate Betaine. Separation and purification, the calculated conversion rate is 88.5%. Elemental analysis of the product (theoretical calculation value in brackets): C 61.41% (61.28%); H 8.73% (8.94%); N 6.12% (5.96%); S 6.93% (6.81%).

[0037]

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Abstract

The invention relates to amide group-containing hydroxysulfobetaine and preparation and application thereof. In a structural formula (I), R1 is any one of alkyl, alkylene, alkynyl, phenyl, alkyl phenyl, naphthyl, alkyl naphthyl, alkyl naphthyl methylene, alkyl phenyl methylene and alkyl containing polyoxyethylene or polyoxypropylene; R2 is saturated or saturated, straight-chain or branched-chain alkyl; R3 and R4 are mutually independently saturated or saturated alkyl or alkyl containing polyoxyethylene or polyoxypropylene; R5 is saturated or saturated, straight-chain or branched-chain alkyl of C0-C10; and in a high-temperature high-salinity oil layer, provided by experiments of multiple formula systems such as a surfactant system, a polymer / surfactant system, an alkali / polymer / surfactant system, a salt / polymer / surfactant system and the like, the surfactant compound can reach the ultra-low interfacial tension of 10 to 3mN / m.

Description

technical field [0001] The invention relates to a preparation method of a temperature-resistant and salt-resistant surfactant containing amide group hydroxysultaine and its application in tertiary oil recovery. Background technique [0002] At present, there are many high-temperature and high-salinity oil reservoirs at home and abroad, such as: the salinity of Qinghai Oilfield is 117,000mg / L, and the reservoir temperature is 90-126℃; the formation water salinity of Zhongyuan Oilfield is as high as 309,000mg / L. The reservoir temperature is 120°C; the salinity of formation water in the Ghawar oilfield in Saudi Arabia is as high as 250,000mg / L, Ca 2+ , Mg 2+ The content is as high as 34,000mg / L, and the reservoir temperature is 105°C. Many high-temperature and high-salinity reservoirs are in the stage of high water-cut development, and the water flooding recovery rate is only about 38% OOIP. Conventional chemical agents are difficult to withstand such harsh reservoir conditio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/14C07C303/32C09K8/584
Inventor 张帆朱友益韩冬蔡红岩
Owner PETROCHINA CO LTD
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