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A kind of degradable polyacrylamide oil displacement agent and preparation method thereof

A polyacrylamide oil displacement agent, polyacrylamide technology, applied in the direction of chemical instruments and methods, drilling compositions, etc., can solve the problems of limiting photocatalytic degradation effect, difficult uniform mixing, etc., to achieve cost reduction, suspended solids Less, excellent flocculation effect

Active Publication Date: 2018-10-02
大庆澳龙石油化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to mix nano-titanium dioxide with sewage containing polymers uniformly, which greatly limits the effect of photocatalytic degradation.

Method used

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  • A kind of degradable polyacrylamide oil displacement agent and preparation method thereof
  • A kind of degradable polyacrylamide oil displacement agent and preparation method thereof
  • A kind of degradable polyacrylamide oil displacement agent and preparation method thereof

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Effect test

Embodiment 1

[0045] A degradable polyacrylamide oil displacement agent is a degradable polyacrylamide oil displacement agent with nano titanium dioxide inorganic composite particles as the core and polyacrylamide as the membrane, wherein the nano titanium dioxide inorganic composite particles are obtained by coating inorganic soil with titanium dioxide Yes, polyacrylamide is bonded to the surface of nano-titanium dioxide inorganic composite particles.

[0046] A method for preparing a degradable polyacrylamide oil displacement agent, comprising the following steps: S1, preparation of nano titanium dioxide inorganic composite particles: using nano titanium dioxide and inorganic soil to prepare nano titanium dioxide inorganic composite particles through a sol-gel method; S2, polyacrylamide inorganic composite particles Preparation of acrylamide: Under visible light, the surface of the nano-titanium dioxide inorganic composite particles prepared in S1 initiates the polymerization of acrylamide...

Embodiment 2

[0048] A degradable polyacrylamide oil displacement agent is a degradable polyacrylamide oil displacement agent with nano titanium dioxide inorganic composite particles as the core and polyacrylamide as the membrane, wherein the nano titanium dioxide inorganic composite particles are obtained by coating inorganic soil with titanium dioxide Yes, polyacrylamide is bonded to the surface of nano-titanium dioxide inorganic composite particles. Among them, the inorganic soil is kaolin.

[0049] A preparation method of degradable polyacrylamide oil displacement agent, comprising the following steps:

[0050] Preparation of S1 nano-titanium dioxide inorganic composite particles:

[0051] S1.1. Take inorganic soil, then add absolute ethanol and butyl titanate, stir vigorously for 15 minutes, and then ultrasonically disperse for 15 minutes; among them, according to the ratio of solid to liquid, inorganic soil: absolute ethanol: butyl titanate = 1g: 20mL : 5mL;

[0052] S1.2. After st...

Embodiment 3

[0059] A degradable polyacrylamide oil displacement agent is a degradable polyacrylamide oil displacement agent with nano titanium dioxide inorganic composite particles as the core and polyacrylamide as the membrane, wherein the nano titanium dioxide inorganic composite particles are obtained by coating inorganic soil with titanium dioxide Yes, polyacrylamide is bonded to the surface of nano-titanium dioxide inorganic composite particles. Among them, the inorganic soil is bentonite.

[0060] A preparation method of degradable polyacrylamide oil displacement agent, comprising the following steps:

[0061] Preparation of S1 nano-titanium dioxide inorganic composite particles:

[0062] S1.1. Take inorganic soil, then add absolute ethanol and butyl titanate, stir vigorously for 30 minutes, and then ultrasonically disperse for 30 minutes; among them, according to the ratio of solid to liquid, inorganic soil: absolute alcohol: butyl titanate = 3g: 25mL : 7mL;

[0063] S1.2. After...

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PUM

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Abstract

The invention discloses a degradable polyacrylamide oil displacing agent, which is a degradable polyacrylamide oil displacing agent with nanometer titanium dioxide inorganic composite particles as the core and polyacrylamide as the membrane. The nanometer titanium dioxide inorganic composite particles are coated with titanium dioxide. It is obtained by coating inorganic soil, and polyacrylamide is bonded to the surface of nanometer titanium dioxide inorganic composite particles. Its preparation method is also disclosed. The invention provides a degradable polyacrylamide oil displacing agent that can effectively improve the photodegradation efficiency of polyacrylamide and overcome the problem of uneven dispersion of nanometer titanium dioxide. The oil displacing agent of the present invention can be used in the field of polymer oil displacement instead of traditional polyacrylamide to solve the problem of environmental pollution caused by the discharge of oil produced water. It has the characteristics of environmental protection and cost reduction without affecting the oil displacement effect of the oil displacing agent. The preparation method of the invention has simple steps, is easy to operate, has mild preparation conditions and is easy to control, and has high efficiency.

Description

technical field [0001] The invention relates to a degradable polyacrylamide oil displacement agent and a preparation method thereof, specifically belonging to the technical field of oil exploitation. Background technique [0002] Oil, known as the black "blood" of the modern economy, is related to economic development, social stability and people's lives. Petroleum is so important, but it is indeed a non-renewable resource. At present, my country's oilfield exploitation has entered the middle and late stages. In order to improve crude oil recovery, the current oilfield exploitation mainly adopts polymer flooding technology, and polyacrylamide (PAM) is the most common in the market. Oil displacement products. Now it has been used on a large scale in my country's Daqing Oilfield, Shengli Oilfield, Liaohe Oilfield, Xinjiang Oilfield and other large oilfields. [0003] With the popularization of polymer flooding technology in oil fields, the output of sewage containing polyacry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K8/588
CPCC09K8/588
Inventor 王海旺王柄筑陶钧实赵庭婕索彪孙腾许翁国明王竑霖全源王昭宇张睿毅郑楠楠蒋少斌杜昊卿李明智马知雨赵晓楠魏新芳
Owner 大庆澳龙石油化工有限公司