Petroleum sulfonate compounded system for oil displacement and preparation method thereof

A technology of petroleum sulfonate and system, which is applied in the field of compound adjustment of petroleum sulfonate, can solve the problems of complex production process, occupation of equipment, product application limitation and the like

Inactive Publication Date: 2012-07-25
胜利油田中胜环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there have been many studies on the production process of petroleum sulfonate, such as CN1472199A method for continuous sulfonation of 150-580 ℃ raw material oil, CN101318112A method for supergravity sulfonation of 200-550 ℃ distillate oil, because the product contains a large amount of unsulfonated oil, the product has poor stability and is prone to stratification
CN1275431A reports the method of membrane sulfonation of 320-380°C petroleum distillate oil, CN1327979A three-stage tank group type sulfonation method of 380-520°C distillate oil, CN1203935A method of sulfonating 200-500°C distillate oil, CN102190604A hydrogenation treatment of raw materials The method of sulfonation after oil, in these methods, alcohol water extraction measures are added, although the content of active substances and product stability of the product are improved, but the production process is more complicated
Due to the difference in raw material oil and sulfonation process, the performance of the product is

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Petroleum distillate oil is used as raw material, gaseous sulfur trioxide, liquid sulfur trioxide or oleum is used as sulfonating agent, and ammonia water or sodium hydroxide is used to neutralize petroleum sulfonate with an active substance content greater than 28%. Formed by adding dodecylbenzenesulfonic acid, heavy alkylbenzenesulfonic acid, alpha-olefin sulfonic acid, alkali or water. The mass percentage of each component is as follows: petroleum sulfonate: 40%-90%; dodecylbenzenesulfonic acid: 0-20%; heavy alkylbenzenesulfonic acid: 0-20%; α-olefin sulfonic acid: 0% -10%; alkali: 0% to 30%; water: 0% to 40%. The alkali is mainly one or more of ammonia water, sodium hydroxide, methylamine solution or ethylamine, diethylamine, monoethanolamine, diethanolamine, and triethanolamine, and is mainly used to adjust the pH value of the product and improve the solubility and dispersion of the product. Water is mainly used to adjust the viscosity of the product to ensure the...

Embodiment 2

[0008] The content of petroleum sulfonate active matter produced from raw oil at 260-520°C is 31.7%, and stratification occurs after being placed at room temperature for one day. After stirring evenly, make a 0.3% solution with Gudong Dong Sanlian sewage from Shengli Oilfield, and use Gudong 13-151 The measured interfacial tension value of well crude oil is 8.6×10 -2 mN / m. Use 84g of the above-mentioned petroleum sulfonate, 5g of dodecylbenzenesulfonate, 5g of heavy alkylbenzenesulfonate, 4g of ammonia water, and 2g of water, and stir evenly to obtain a modified petroleum sulfonate product. The interfacial tension value measured under the same conditions as above is 2.3×10 -3 mN / m, no delamination occurred after 30 days at room temperature.

Embodiment 3

[0010] The content of petroleum sulfonate active matter produced from raw oil at 260-520°C is 31.7%, and stratification occurs after being placed at room temperature for one day. The measured interfacial tension value of crude oil in Well 3-3-8 is 3.7×10 -2 mN / m. Use 85 g of the above-mentioned petroleum sulfonate, 7 g of α-olefin sulfonic acid, 3 g of triethanolamine, and 5 g of water, and stir evenly to obtain a modified petroleum sulfonate product. The interfacial tension value measured under the same conditions as above is 1.4×10 -3 mN / m, no delamination occurred after 30 days at room temperature.

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Abstract

The invention relates to a compound adjustment method of petroleum sulfonate, which provides a petroleum sulfonate compounded system for oil displacement, which ensures that lamination does not occur when a product is laid within 30 days at normal temperature and a preparation method of the petroleum sulfonate compounded system. The system takes petroleum distillate oil as raw material, takes gaseous sulfur trioxide, liquid sulfur trioxide or fuming sulfuric acid as sulfonating agent, takes petroleum sulfonate, the active matter content of which is larger than 28 percent, formed by neutralizing ammonia or sodium hydroxide as a base, and is formed by adding dodecyl benzene sulfonic acid, heavy alkyl benzene sulfonic acid, alpha-olefin sulfonic acid, alkali or water. The system comprises the following components by mass: 40 to 90 percent of petroleum sulfonate, 0 to 20 percent of dodecyl benzene sulfonic acid, 0 to 20 percent of heavy alkyl benzene sulfonic acid, 0 to 10 percent of alpha-olefin sulfoacid, 0 to 30 percent of alkali and 0 to 40 percent of water. By adopting the technical scheme, the adaptability of petroleum sulfonate products in an oil field is improved, the product stabilizing capacity is enhanced, and the production process of the petroleum sulfonate is simplified.

Description

technical field [0001] The invention relates to a compound adjustment method of petroleum sulfonate in the field of oil field tertiary oil recovery, in particular to a compound system of petroleum sulfonate for oil displacement and a preparation method thereof. Background technique [0002] Petroleum sulfonate is an anionic surfactant produced from petroleum distillate oil. Due to its wide source of raw materials and good compatibility with formation fluids, it has become an important oil displacement agent in oilfield tertiary oil recovery. At present, there have been many studies on the production process of petroleum sulfonate, such as CN1472199A method for continuous sulfonation of 150-580 ℃ raw material oil, CN101318112A method for supergravity sulfonation of 200-550 ℃ distillate oil, because the product contains a large amount of unsulfonated oil, the product has poor stability and is prone to stratification. CN1275431A reports the method of membrane sulfonation of 32...

Claims

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Application Information

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IPC IPC(8): C09K8/584
Inventor 杨丙飞付兵崔继峰王志强孟兆玲
Owner 胜利油田中胜环保有限公司
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