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Sodium alkylarylsulfonate surfactant composition and its preparation and application

A technology of sodium alkylaryl sulfonate and surfactant, which is applied in the direction of drilling composition, chemical/physical process, dissolution, etc., can solve the problems of shortened pump inspection cycle, poor product adaptability, equipment corrosion, etc., and achieve Reduce the oil-water interfacial tension, simplify the synthesis reaction process, and increase the content of active substances

Active Publication Date: 2018-02-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, some problems have been exposed in the field test of strong alkali ASP flooding: firstly, due to the use of high concentration of strong alkali in the compound system, the scale of the oil well is serious, the inspection period of the pump is shortened, the equipment is corroded seriously, and the productivity of the oil well is reduced
Chinese patent CN 1782019A discloses a technical scheme for obtaining heavy alkylbenzene sulfonate products suitable for weak alkali triple compound flooding by using a combination of different carbon chain alkylbenzene sulfonates. It is difficult to achieve ultra-low interfacial tension under alkali-free conditions, so it is necessary to synthesize other types of surfactants for oil displacement
Chinese patent CN 1275431A discloses petroleum sulfonate surfactants for oilfields, its preparation method and its application in tertiary oil recovery. It has a narrow range of raw material molecular weight and poor product adaptability, and because the selected raw material aromatics content is low, the synthesis process It is necessary to take extraction and separation to remove unsulfonated reaction oil

Method used

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  • Sodium alkylarylsulfonate surfactant composition and its preparation and application
  • Sodium alkylarylsulfonate surfactant composition and its preparation and application
  • Sodium alkylarylsulfonate surfactant composition and its preparation and application

Examples

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Effect test

Embodiment 1

[0041] The present embodiment provides a kind of preparation method of alkyl aryl sulfonic acid sodium salt surfactant composition, it comprises the following steps:

[0042] a. Mix raw material 1 and raw material 2 to obtain a mixture, wherein the raw material 1 is the second-line decompression dewaxing oil of Fushun Petrochemical Plant, and the raw material 2 is heavy alkylbenzene 1# of Fushun Detergent Chemical Plant;

[0043] Based on the total weight of the mixture as 100%, it consists of 90wt% Fushun Petrochemical Plant vacuum second-line reverse-sequence dewaxed oil and 10wt% Fushun Detergent Chemical Plant heavy alkylbenzene 1#, and the aromatics in the mixture The content is 30wt%-33wt%;

[0044] b. Use SO 3 The gas performs sulfonation treatment on the mixture to obtain the product after sulfonation treatment; wherein, the temperature of sulfonation treatment is 50-60°C, and the SO 3 The gas volume concentration is 6%-7%.

[0045] c, then adopting a concentration ...

Embodiment 2

[0052] The present embodiment provides a kind of preparation method of alkyl aryl sulfonic acid sodium salt surfactant composition, it comprises the following steps:

[0053] a. Mix raw material 1 and raw material 2 to obtain a mixture, wherein the raw material 1 is dewaxed dewaxed oil from the second line of decompression and dewaxed oil from the third line decompressed in Fushun Petrochemical Plant, and raw material 2 is from the detergent chemical plant in Fushun Heavy alkylbenzene 1#;

[0054] Among them, based on the total weight of the mixture as 100%, it consists of 60wt% Fushun Petrochemical Plant vacuum second-line reverse-sequence dewaxed oil, 25wt% vacuum third-line reverse-sequence dewaxed oil and 15wt% Fushun detergent chemical Composition of heavy alkylbenzene 1# in the factory, and the content of aromatics in the mixture is 33wt%-36wt%;

[0055] b. Use SO 3 The gas performs sulfonation treatment on the mixture to obtain the product after sulfonation treatment;...

Embodiment 3

[0063] The present embodiment provides a kind of preparation method of alkyl aryl sulfonic acid sodium salt surfactant composition, it comprises the following steps:

[0064] a. Mix raw material 1 and raw material 2 to obtain a mixture, wherein the raw material 1 is dewaxed dewaxed oil from the second line of decompression and dewaxed oil from the third line decompressed in Fushun Petrochemical Plant, and raw material 2 is from the detergent chemical plant in Fushun Heavy alkylbenzene 1#, heavy alkylbenzene 2#;

[0065] Among them, based on the total weight of the mixture as 100%, it consists of 70wt% Fushun Petrochemical Plant vacuum second-line reverse-sequence dewaxed oil, 15wt% vacuum third-line reverse-sequence dewaxed oil, 10wt% Fushun detergent chemical Heavy alkylbenzene 1# of the factory and 5wt% heavy alkylbenzene 2# of Fushun Detergent Chemical Factory, the content of aromatics in the mixture is 33wt%-37wt%;

[0066] b. Use SO 3 The gas performs sulfonation treatm...

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Abstract

The invention provides a sodium alkylarylsulfonate surfactant composition and its preparation and application. The method comprises mixing a raw material 1 and a raw material 2 to obtain a mixed material, wherein the raw material 1 comprises one or more of reverse order dewaxed oil or distillate from a decompression second line, reverse order dewaxed oil or distillate from a decompression third line and reverse order dewaxed oil or distillate from a decompression forth line, the raw material 2 comprises one or more of light alkyl benzene, heavy alkyl benzene 1# and heavy alkyl benzene 2#, a weight ratio of each ingredients in the raw material 1 is 5-95wt% and a weight ratio of each ingredients in the raw material 2 is 5-95wt%, carrying out sulfonation treatment on the mixture through SO3 gas to obtain the sulfonated product and neutralizing the sulfonated product until system pH is 7-10 through a sodium hydroxide aqueous solution.

Description

technical field [0001] The invention relates to an alkylarylsulfonic acid sodium salt surfactant composition and its preparation and application, belonging to the technical field of petroleum exploitation. Background technique [0002] Tertiary oil recovery (EOR) technology is an oilfield development technology that can use new technologies such as physics, chemistry and biology to enhance oil recovery. Chemical compound flooding is an effective method in the tertiary oil recovery technology that can greatly increase the oil recovery of high water-cut oilfields, and generally can increase the oil recovery by more than 15%. Strong alkali (NaOH) ASP flooding using alkylbenzene sulfonate as surfactant has been tested and applied in Daqing Oilfield. The test results show that ASP flooding can increase recovery by more than 18%. However, some problems have been exposed in the field test of strong alkali ASP flooding: firstly, due to the high concentration of strong alkali used i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/12C09K8/584C09K23/12
CPCC09K8/584C09K23/00
Inventor 朱友益王哲
Owner PETROCHINA CO LTD
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