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Alkyl aryl alkyl-sulfonate surfactant composition and its application in tertiary oil recovery

A technology of alkyl aryl alkyl sulfonate and surfactant, which is applied in the field of novel alkyl aryl alkyl sulfonate type surfactant composition, can solve problems such as formation and oil well damage, and achieve low oil and water Interfacial tension, the best oil displacement effect, the effect of enhanced oil recovery

Inactive Publication Date: 2005-01-19
大庆高新区鑫诺精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing ASP flooding system contains a high concentration of alkali, such as sodium hydroxide, sodium carbonate, etc., which will cause great damage to the formation and oil wells during use, so there is an urgent need for a A new type of oil displacement system, in the case of low alkali and weak alkali, it can still form 10 -3 ~10 -4 Ultra-low interfacial tension of mN / m, enhancing oil recovery by more than 20% (OOIP)

Method used

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  • Alkyl aryl alkyl-sulfonate surfactant composition and its application in tertiary oil recovery
  • Alkyl aryl alkyl-sulfonate surfactant composition and its application in tertiary oil recovery
  • Alkyl aryl alkyl-sulfonate surfactant composition and its application in tertiary oil recovery

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Effect test

Embodiment 1

[0061] Embodiment one: the preparation of alkyl aryl alkyl sulfonate type surfactant

[0062] 1. m is 12, n is 4, p is 0, that is R 1 for C 12 h 25 Alkyl; R 2 for C 4 h 8 Alkyl; R 3 Be the preparation of the alkyl aryl alkyl sulfonate type surfactant of H group:

[0063] 10mol benzene (780g) is added in the reactor, stirs, in catalyst AlCl 3 Add 1 mol (168g) of linear dodecene dropwise at 58-60°C under the action to obtain 240g of dodecylbenzene. 3 1 mol (127 g) of dichlorobutane was added dropwise at 58-60° C. under the action to obtain 320 g of dodecylphenylbutyl chloride. Then add sodium bisulfite 126g, heat, stir, until the reactant is transparent. After concentration, m is 12, n is 4, p is 0, namely R 1 for C 12 h 25 Alkyl; R 2 for C 4 h 8 Alkyl; R 3 Sodium dodecylphenyl butyl sulfonate for H group.

[0064] 2. Preparation of alkyl aryl alkyl sulfonate type surfactant composition

[0065] Take the above m as 12, n as 4, and p as 0, which is R 1 for C 1...

Embodiment 2

[0066] Embodiment two: the preparation of alkyl aryl alkyl sulfonate type surfactant

[0067] 1. m is 14, n is 3, p is 0 or R 1 for C 14 h 29 Alkyl; R 2 for C 3 h 6 Alkyl; R 3 Be the preparation of the alkyl aryl alkyl sulfonate type surfactant of H group:

[0068] 10mol benzene (780g) is added in the reactor, stirs, in catalyst AlCl 3 Add 1 mol (196g) of linear tetradecene dropwise at 58-60°C under the action to obtain 270g of tetradecylbenzene. 3 Under action, 1 mol (77 g) of allyl chloride was added dropwise at 58-60° C. to obtain 311 g of tetradecylphenylpropene. Then add sodium bisulfite 126g, heat, stir, until the reactant is transparent. After concentration, m is 14, n is 3, p is 0, namely R 1 for C 14 h 29 Alkyl; R 2 for C 3 h 6 Alkyl; R 3 Sodium tetradecylphenylpropyl sulfonate for H group.

Embodiment 3

[0070] Alkylaryl alkyl sulfonate type surfactant composition, this composition comprises following several components:

[0071] ①The alkyl aryl alkyl sulfonate type surfactant is 0.3% (weight);

[0072] Among them, the surfactant is m is 12, n is 4, p is 0, namely R 1 for C 12 h 25 Alkyl; R 2 for C 4 h 8 Alkyl; R 3 Sodium dodecylphenyl butyl sulfonate as H group

[0073] 2. The polymer is 0.25% (by weight); the polymer is water-soluble polyacrylamide with a molecular weight of 21 million;

[0074] ③The balance is oilfield injected sewage.

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Abstract

The invention discloses an novel alkyl aryl alkyl-sulfonate surfactant composition and its application in tertiary oil recovery, the surfactant-alkali-polymeric ternary oil driving system prepared from the surfactant and the underground crude oil can reach a ultralow interfacial tension of 0.0001-0.00001 mN / m, thus can effectively substitute the residual oil in the oil reservoir, the crude oil recovery factor can be increased by over 30%.

Description

technical field [0001] The invention discloses a novel alkyl aryl alkyl sulfonate surfactant composition and its application in tertiary oil recovery. Background technique [0002] The application of surfactants in oil recovery technology began in the early 1930s and has a history of more than 70 years. Over the past 70 years, both theory and practice have achieved great development. At present, the following injection systems have basically been formed: (1) active water flooding, (2) micellar solution flooding, (3) low Interfacial tension system flooding, (4) ASP flooding. Among them, ASP flooding (alkali-polymer-surfactant) is a new method of enhancing oil recovery developed in the 1980s. High oil displacement efficiency can still be obtained, therefore, it has become a new technology for enhancing oil recovery that is economically and technically successful. [0003] After the oil field enters the high water cut period, the remaining oil i...

Claims

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Application Information

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IPC IPC(8): E21B43/25
Inventor 刘春德
Owner 大庆高新区鑫诺精细化工有限公司
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