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Modified petroleum sulfonate and preparation method thereof

A petroleum sulfonate and modification technology, which is applied in the fields of sulfonate preparation, sulfonic acid preparation, chemical instruments and methods, etc., can solve problems such as inability to use in large quantities, achieve less usage, improve hard water resistance, and high catalytic activity Effect

Inactive Publication Date: 2022-01-28
SHANDONG DAMING FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to cost reasons, many high-performance surfactants have been unable to be used in large quantities in oil displacement surfactants

Method used

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  • Modified petroleum sulfonate and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: Preparation of modified petroleum sulfonate

[0030] Including the following preparation steps:

[0031] Step 1: Add 400 g of high-aromatic raw material oil, 6 g of anhydrous p-toluenesulfonic acid, and 15 g of maleic anhydride into the reactor. The reaction kettle is sealed, 2-4g of anhydrous HCl gas is introduced through the air inlet, and the air inlet valve is closed. Set the reaction temperature to 60-70°C, start stirring, and react for 6-7h. Synthetic modified raw oil.

[0032] Step 2, add 100g modified raw material oil in the there-necked flask, add 300g dichloroethane to dissolve; Liquid 24g SO 3 Dissolve with 96g of dichloroethane, make sulfonating agent with a concentration of 20%, transfer the sulfonating agent to the dropping funnel; put the three-necked flask into a constant temperature water bath, set the reaction temperature to 20°C, start electric stirring, and stir The speed is 300-350rpm; put the dropping funnel with sulfonating agent...

Embodiment 2

[0037] Embodiment 2: Preparation of modified petroleum sulfonate

[0038] Including the following preparation steps:

[0039] Step 1: Add 400 g of wax oil, 4 g of anhydrous p-toluenesulfonic acid, and 12 g of acrylic acid into the reaction kettle. The reaction kettle was sealed, 3 g of anhydrous HCl gas was introduced through the air inlet, and the air inlet valve was closed. Set the reaction temperature to 60-70°C, start stirring, and react for 6-7h. Synthetic modified raw oil.

[0040] Step 2, add 150g modified raw material oil in the there-necked flask, add 150g dichloroethane to dissolve; Liquid 30g SO 3 Dissolve it with 120g of dichloroethane, configure it into a sulfonating agent with a concentration of 20%, transfer the sulfonating agent to the dropping funnel; put the three-neck flask into a constant temperature water bath, set the reaction temperature to 20°C, start the electric stirring, and stir The speed is 300-350rpm; put the dropping funnel with sulfonating a...

Embodiment 3

[0045] Embodiment 3: Preparation of modified petroleum sulfonate heavy oil viscosity reducer

[0046] Including the following preparation steps:

[0047]Step 1: Add 300 g of high-aromatic raw material oil, 6 g of anhydrous p-toluenesulfonic acid, 10 g of maleic anhydride, and 6 g of dodecene into the reactor. The reaction kettle was sealed, 4 g of anhydrous HCl gas was introduced through the gas inlet, and the gas inlet valve was closed. Set the reaction temperature to 60-70°C, start stirring, and react for 6-7h. Synthetic modified raw oil.

[0048] Step 2, add 100g modified raw material oil in the there-necked flask, add 300g dichloroethane to dissolve; Liquid 19g SO 3 Dissolve it with 76g of dichloroethane, configure it as a sulfonating agent with a concentration of 20%, transfer the sulfonating agent to the dropping funnel; put the three-necked flask into a constant temperature water bath, set the reaction temperature to 20°C, start the electric stirring, and stir The s...

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Abstract

The invention discloses modified mahogany petroleum sulfonate and a preparation method thereof, and mainly belongs to the field of surfactants. The preparation method comprises the following steps of: 1, by taking an organic matter containing double bonds as an alkylating agent and organic acid and hydrogen halide as catalysts, grafting the alkylating agent to raw oil through alkylation reaction to synthesize modified raw oil; 2, sulfonating the modified raw oil by using liquid sulfur trioxide which is dissolved and diluted by a solvent; 3, after completing sulfonation, using alkali liquor or ammonia water to perform neutralization; and 4, evaporating a neutralized solution to remove the solvent to obtain the modified mahogany petroleum sulfonate product. The modified mahogany petroleum sulfonateis a cheap and efficient chemical flooding agent suitable for high-salinity oil reservoirs or heavy oil and super heavy oil at present.

Description

technical field [0001] The invention relates to the field of surfactants, in particular to a modified petroleum sulfonate and a preparation method thereof. Background technique [0002] Sulfonate surfactants are the largest and most widely used category of anionic surfactants, and they are also developed earlier and have more varieties. Petroleum sulfonate is a kind of surfactant for tertiary oil recovery prepared by sulfonating and neutralizing distillate oil with a boiling range of 300-500°C as raw material. Petroleum sulfonate is a commonly used surfactant in tertiary oil recovery. It is widely used in major oilfields in China due to its low price and good oil displacement effect. It has achieved good precipitation and oil-increasing effects in Daqing Oilfield and Shengli Oilfield. [0003] However, with the gradual advancement of chemical flooding in oilfields, the formation environment faced by tertiary oil recovery in oilfields has gradually become complex and deterio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/62C07C303/06C07C303/32C07C2/70C09K8/584C09K8/60
CPCC07C309/62C07C303/06C07C303/32C07C2/70C09K8/584C09K8/602
Inventor 王志强李国利王宗文王晓峰范文舟李靖
Owner SHANDONG DAMING FINE CHEM CO LTD
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