Surfactant composition and use thereof

A surfactant and composition technology, applied in the field of surfactant composition, can solve problems such as corrosion of equipment and pipelines, damage to formations and oil wells, poor oil displacement efficiency, etc., to achieve reduced usage, easy degradation, and enhanced temperature resistance performance effect

Active Publication Date: 2008-10-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] One of the technical problems to be solved by the present invention is that the surfactant-containing compositions in the prior art have poor o

Method used

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  • Surfactant composition and use thereof

Examples

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Example Embodiment

[0036] [Example 1]

[0037] Synthesis of Sodium Stearyl Polyoxyethylene (6) Ether Sulfonate

[0038] (1) Add 142 grams (about 0.5 mol) of octadecanoic acid and 1.5 grams of calcium oxide to a reactor equipped with a condensing device, a stirring device and a gas disperser. When heating to 135°C while blowing nitrogen, add 18 Acidic 14% by weight of water was stirred and reacted for 1 hour. Then the water was first distilled at normal pressure, and then under reduced pressure under a vacuum of 20 mmHg, the water was removed by vacuum at 140°C for 20 minutes, the solution was cooled to 80°C, and 20% by weight of the theoretical acid content of the neutralization catalyst was slowly added dropwise. Of concentrated sulfuric acid. Heat the temperature of the system to 85~90℃, turn on the vacuum system, dehydrate under high vacuum for 1 hour, then purge with nitrogen 3 to 4 times to remove the air in the system, and then adjust the reaction temperature of the system to 150℃ slowly. Add ...

Example Embodiment

[0043] [Example 2]

[0044] (1) Add 228 grams (1.0 mol) of myristic acid and 2.5 grams of calcium oxide to a reactor equipped with a condensing device, a stirring device and a gas disperser. When heating to 135°C while blowing nitrogen, add 25 water and stir. React for 1 hour. Then the water was first distilled under normal pressure, and then under reduced pressure under a vacuum of 20 mmHg, the water was evaporated by vacuum at 140°C for 20 minutes, the solution was cooled to 80°C, and 0.8 g of concentrated sulfuric acid was slowly added dropwise. Heat the temperature of the system to 85~90℃, turn on the vacuum system, dehydrate under high vacuum for 1 hour, then purge with nitrogen 3 to 4 times to remove the air in the system, and then adjust the reaction temperature of the system to 150℃ slowly. Into 180 grams of ethylene oxide, control the pressure ≤ 0.40MPa to carry out the alkoxylation reaction; after the reaction, purge the system with nitrogen to remove the unreacted ethyl...

Example Embodiment

[0049] [Example 3]

[0050] (1) Add 100 g (0.5 mol) of dodecanoic acid and 1.0 g of calcium oxide to a reactor equipped with a condensing device, a stirring device and a gas disperser. When heating to 135°C while blowing nitrogen, add 10 g of water. The reaction was stirred for 1 hour. Then the water was first distilled at normal pressure, and then under reduced pressure under a vacuum of 20 mmHg, the water was removed by vacuum at 140°C for 20 minutes, the solution was cooled to 80°C, and 20% by weight of the theoretical acid content of the neutralization catalyst was slowly added dropwise. Of concentrated sulfuric acid. Heat the temperature of the system to 85~90℃, turn on the vacuum system, dehydrate under high vacuum for 1 hour, then purge with nitrogen 3 to 4 times to remove the air in the system, and then adjust the reaction temperature of the system to 150℃ slowly. Add 68 grams of ethylene oxide and control the pressure ≤0.40MPa to carry out the alkoxylation reaction; after...

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Abstract

The invention relates to surface active agent combination and the application of the combination which solve the disadvantages of bad displacement efficiency under the condition of high temperature and high salt, bringing harm to the strata due to the containing of alkali, equipment and channel corrosion and high production cost found in the oil displacement agent which contains surface active agent in the prior art. The surface active agent combination and the application of the combination solves the problem through the technical proposal of the surface active agent combination which contains fatty alcohol-polyoxyethylene ether sulfonates, polymers and water; the surface active agent combination is applicable to the tertiary oil recovery production of the oil field.

Description

technical field [0001] The present invention relates to a surfactant composition and its application. Background technique [0002] Judging from the reserves and exploitation of my country's oil resources, my country's Daqing, Shengli, Zhongyuan, Huabei, Dagang and other large oil fields are all in the middle and late stage of exploitation, and the water content of the produced oil is as high as 90%, and they have entered into the use of enhanced oil recovery (EOR) technology In the tertiary oil recovery stage, enhanced oil recovery has become an important strategic measure of my country's oil industry. Among them, chemical flooding is one of the main methods of tertiary oil recovery. [0003] In the chemical flooding technology of tertiary oil recovery, whether it is the current surfactant flooding (micelle flooding, microemulsion flooding), or the most promising composite flooding (alkali + surfactant + polymer), it is inseparable from Open to choose the appropriate surfa...

Claims

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Application Information

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IPC IPC(8): C09K8/584C09K8/588
Inventor 张卫东沙鸥杨一青陈荣福
Owner CHINA PETROLEUM & CHEM CORP
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