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Composite cellulose ether high-temperature foam stabilizer for oil extraction

A technology of composite cellulose and foam stabilizer, which is applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of poor salt resistance, poor high temperature resistance, short foam stabilization time, etc., and achieve good foam stabilization effect, Good dispersibility and good dirt mixing effect

Inactive Publication Date: 2015-03-25
TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the current foam stabilizer is used in conjunction with the existing foaming agent, although the quality of the foam is improved, it still has the shortcomings of short foam stability time, poor salt resistance and high temperature resistance. Therefore, in order to improve the stability of the foam, it is improving At the same time as the foaming agent, it is also necessary to develop a better foam stabilizer

Method used

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  • Composite cellulose ether high-temperature foam stabilizer for oil extraction

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Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 30% of high-viscosity carboxymethyl cellulose (HV-CMC), 50% of hydroxyethyl cellulose ether (HEC), and 20% of polyacrylamide (HPAM), and add them into a high-speed grinder, 1000r / Min stirring for 10 min, 100 mesh sieve to obtain mixed powder sample 1.

Embodiment 2

[0020] Weigh 40% of high-viscosity carboxymethyl cellulose (HV-CMC), 50% of hydroxyethyl cellulose ether (HEC), and 10% of polyacrylamide (HPAM), and add them into a high-speed grinder, 1000r / Min stirring for 10 min, 100 mesh sieve to obtain mixed powder sample 2.

Embodiment 3

[0022] Weigh 50% of high-viscosity carboxymethyl cellulose (HV-CMC), 30% of hydroxyethyl cellulose ether (HEC), and 20% of polyacrylamide (HPAM), and add them into a high-speed grinder, 1000r / Min stirring for 10 min, 100 mesh sieve to obtain mixed powder sample 3.

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Abstract

According to the technical scheme, the invention relates to a composite cellulose ether high-temperature foam stabilizer for oil extraction. The composite cellulose ether high-temperature foam stabilizer is suitable for anionic-nonionic surfactant foaming agents and comprises the following components in percentage by mass: 30-50% of high-viscosity carboxymethylcellulose (HV-CMC), 20-50% of hydroxyethyl cellulose ether (HEC), and 10-20% of hydrolyzed polyacryamide (HPAM). The composite cellulose ether high-temperature foam stabilizer for oil extraction disclosed by the invention has the beneficial effects that by compounding multiple foam stabilizers, the disadvantages of large usage amount, short half-life period and low cost when a single foam stabilizer is used under high-salinity and high-temperature conditions are made up; and during the use of the composite foam stabilizer in oil extraction of oil-water well, the composite foam stabilizer is used in combination with the anionic-nonionic surfactant foaming agents so as to achieve the advantages of good compatibility, water solubility and dispersion.

Description

technical field [0001] The invention relates to the field of petrochemical additives, in particular to a composite cellulose ether high-temperature foam stabilizer for oil recovery. Background technique [0002] In the process of foam flooding to enhance oil recovery, a single foaming agent solution is used, although its foaming property is very good, but the stability of foam formation is poor, which cannot meet the needs of production. In order to improve the stability of the foam, a foam stabilizer with excellent performance can be added to the foaming agent solution. Foam stabilizers are divided into two categories according to the mode of action: the first category is to improve the quality of the film, increase the viscoelasticity of the film, reduce the air permeability of the foam, and enhance the stability of the foam. Commonly used are stearic acid amine and lauryl alcohol. , lauroyl diethanolamine, lauryl dimethylamine oxide, etc.; the second type of foam stabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/588C09K8/584
CPCC09K8/588C09K8/584
Inventor 胡玉国梁海臣李靖张冠洲张有强张凤跃肖劲松孙红桃李东
Owner TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
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