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Water-soluble polymer for emulsifying and visbreaking viscous oil and preparation method thereof

A water-soluble polymer, emulsifying and viscosity-reducing technology, applied in drilling compositions, chemical instruments and methods, etc., can solve problems such as poor fluidity of crude oil, reduce viscosity of heavy oil, easily obtain raw materials, and synthesize methods. Convenient and simple effects

Active Publication Date: 2014-08-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the special characteristics of high viscosity and high freezing point of heavy oil, the fluidity of crude oil in the reservoir and wellbore becomes poor, and a series of technical problems need to be solved urgently in the process of production and gathering.

Method used

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  • Water-soluble polymer for emulsifying and visbreaking viscous oil and preparation method thereof
  • Water-soluble polymer for emulsifying and visbreaking viscous oil and preparation method thereof
  • Water-soluble polymer for emulsifying and visbreaking viscous oil and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] 1. Preparation of monomeric allyl glyceryl ether-based polyoxyethylene ether-based alkane compounds:

[0027] Dissolve 1 volume of alkyl (12 carbon atoms) polyoxyethylene ether in 2 volumes of tetrahydrofuran, and add allyl glycidyl ether dropwise to the tetrahydrofuran solution under nitrogen, and the alkyl polyoxyethylene The molar ratio of vinyl ether to allyl glycidyl ether is 1:1. After reacting at 70-80°C for 5 hours, the product is distilled under reduced pressure to obtain a brown viscous liquid.

[0028] The monomer was uniformly mixed with spectrally pure KBr, pressed into tablets, and the infrared spectrum of the monomer was measured with an infrared spectrometer.

[0029] figure 1 It is the infrared spectrogram of allyl glyceryl ether base polyoxyethylene ether base alkane compound, from figure 1 It can be seen that at 3447cm -1 、2914cm -1 and 2850cm -1 at -OH and -CH-(-CH 2 -) The stretching vibration peak of the group is at 1642cm -1 at -HC=CH 2 Th...

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Abstract

The invention discloses a water-soluble polymer for emulsifying and visbreaking viscous oil and a preparation method thereof. The polymer contains three structural units: acrylamide, sodium acrylate and allyl glyceryl ether-base polyethenoxy ether-base alkane compounds; and the viscosity-average molecular weight is 1-8 million. The preparation method comprises the following steps: dissolving alkyl polyoxyethylene ether in tetrahydrofuran, dropwisely adding allyl glycidyl ether into the tetrahydrofuran solution while introducing nitrogen, and reacting at 70-80 DEG C for 5 hours to obtain the allyl glyceryl ether-base polyethenoxy ether-base alkane compounds; and dissolving the acrylamide, acrylic acid and allyl glyceryl ether-base polyethenoxy ether-base alkane compounds in water, regulating the pH value of the solution to 7 or so, introducing nitrogen for 30 minutes, heating to 40-60 DEG C, adding an initiator, and reacting for 8-10 hours. The polymer has excellent emulsifying property, and is beneficial to crude oil production, gathering and transportation; and the preparation method is simple to operate, and has the advantages of mild reaction conditions and higher yield.

Description

technical field [0001] The invention relates to a water-soluble polymer which can be used for viscous reduction of heavy oil emulsification and a preparation method thereof. Background technique [0002] Heavy oil is a complex mixture of multiple hydrocarbons rich in colloids and asphaltenes, characterized by high density, high viscosity and poor fluidity. my country is rich in heavy oil resources, and the proportion of heavy oil in the proven oil resources is increasing. However, due to the special characteristics of high viscosity and high freezing point of heavy oil, the fluidity of crude oil in the reservoir and wellbore becomes poor, and a series of technical problems need to be solved urgently in the process of production and gathering. [0003] For the production of heavy oil, there are two main types of conventional viscosity reduction, namely physical viscosity reduction and chemical viscosity reduction. At present, a variety of methods have been developed at home...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F290/06C08F220/56C08F220/06C08F216/20C08F4/40C09K8/584
Inventor 韩利娟叶仲斌陈洪张轩吕超
Owner SOUTHWEST PETROLEUM UNIV
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