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

CN104449640AInactive Publication Date: 2015-03-25TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM

2 Cites 8 Cited by

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Applications(China)
Current Assignee / Owner: TIANJIN DAGANG OILFIELD BINGANG GRP BOHONG PETROLEUM CHEM
Publication Date: 2015-03-25
Estimated Expiration: Not applicable · inactive patent

Smart Images

Figure 1

Patent Text Reader

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.

Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

Login to View More