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Heavy oil emulsifying viscosity reducer and preparation method thereof

A technology for emulsifying and reducing viscosity and heavy oil, applied in chemical instruments and methods, drilling compositions, etc., can solve the problems of difficult demulsification of heavy oil, increased equipment load, difficulty in natural dehydration, etc. The effect of reducing friction and excellent salt resistance

Active Publication Date: 2019-01-15
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to dehydrate the emulsion naturally in the later stage, and it is difficult to demulsify the heavy oil in the later stage, which is easy to increase the equipment load

Method used

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  • Heavy oil emulsifying viscosity reducer and preparation method thereof
  • Heavy oil emulsifying viscosity reducer and preparation method thereof
  • Heavy oil emulsifying viscosity reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Take 6 parts of octylphenol polyoxyethylene ether, 5 parts of fatty alcohol polyoxyethylene ether and 70 parts of water into the flask, then stir the system and gradually raise the temperature to 60°C, and continue to stir until a uniform mixture is formed; Add 2 parts of sodium α-olefin sulfonate, 3 parts of sodium fatty alcohol polyoxyethylene ether sulfate, and 2.5 parts of formaldehyde solution into the above solution, continue stirring and dissolving to obtain a viscous oil emulsified viscosity reducer.

Embodiment 2

[0044] Take 6 parts of octylphenol polyoxyethylene ether, 5 parts of fatty alcohol polyoxyethylene ether and 70 parts of water into the flask, then stir the system and gradually raise the temperature to 60°C, and continue to stir until a uniform mixture is formed; Add 2 parts of sodium α-olefin sulfonate, 3 parts of sodium fatty alcohol polyoxyethylene ether sulfate, and 4 parts of formaldehyde solution into the above solution, continue stirring and dissolving to obtain a viscous oil emulsified viscosity reducer.

Embodiment 3

[0046] Take 6 parts of octylphenol polyoxyethylene ether, 5 parts of fatty alcohol polyoxyethylene ether and 75 parts of water into the flask, then stir the system and gradually raise the temperature to 60°C, and continue to stir until a uniform mixture is formed; Add 2 parts of sodium α-olefin sulfonate, 3 parts of sodium fatty alcohol polyoxyethylene ether sulfate, and 2.5 parts of formaldehyde solution into the above solution, continue stirring and dissolving to obtain a viscous oil emulsified viscosity reducer.

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Abstract

The invention discloses a heavy oil emulsifying viscosity reducer and a preparation method thereof. The heavy oil emulsifying viscosity reducer comprises a nonionic surfactant, an anionic surfactant,a small molecule penetrant and water. The emulsifying viscosity reducing agent is mixed and stirred with heavy oil to form an oil-in-water emulsion of the heavy oil, thereby achieving the purpose of emulsification and viscosity reduction of the heavy oil. The emulsifying viscosity reducer has the characteristics of high viscosity reduction rate, long emulsion stability time, high natural dehydration rate and superior salt tolerance.

Description

technical field [0001] The invention relates to a preparation method of a heavy oil emulsified viscosity reducer, which belongs to the technical field of heavy oil exploitation. Background technique [0002] With the reduction of recoverable reserves of light oil and the continuous improvement of oil extraction technology, the proportion of heavy oil production is gradually increasing. It is estimated that my country's heavy oil reserves are about 25 billion tons, and the proven recoverable reserves of heavy oil are about 1.2 billion tons. These heavy oils are mainly distributed in Tuha Oilfield, Liaohe Oilfield, Shengli Oilfield, Jilin Oilfield, etc. Generally speaking, the content of hydrocarbons in heavy oil is low, and the content of colloid, asphaltene and wax is high, showing the typical characteristics of high heavy oil. [0003] In the early 1990s, major oil fields in my country first adopted the production method of mixing thinner and reducing viscosity. The ligh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584
CPCC09K8/584
Inventor 张明锋徐鸿志赵文娜郝志伟李玉泉张鹏远张硕邓君宇王天驹王蕊
Owner BC P INC CHINA NAT PETROLEUM CORP
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