Foam oil displacement agent with oil resistance, and its application

A foam oil displacement and performance technology, applied in the field of foam oil displacement agent, can solve the problems of defoaming, poor oil resistance, unstable in the case of oil, etc., and achieve the effects of improved oil recovery, strong foaming ability, and good oil resistance
CN104152128AInactive Publication Date: 2014-11-19TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TECHNICAL INST OF PHYSICS & CHEMISTRY - CHINESE ACAD OF SCI
Publication Date
2014-11-19
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of tertiary recovery, and specifically relates to a foam oil displacement agent with oil resistance, and its application. The foam oil displacement agent with oil resistance is obtained by mixing and compounding an anionic surfactant with a cationic surfactant. The foam oil displacement agent with oil resistance has the characteristics of strong foaming capability and good oil resistance. The foam oil displacement agent with oil resistance enables the half life of foam to reach above 60min in the presence of crude oil, and can solve the problems of bad foam oil resistance, no formation of good plugging in present foam oil displacement and extraction processes; and the half life of foam having no oil resistance does not exceed 15min generally. The foam oil displacement agent with oil resistance can be used in the tertiary recovery of oilfields, and improves the recovery efficiency of the crude oil.
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Description

technical field

[0001] The invention relates to the technical field of tertiary oil recovery, in particular to a foam oil displacement agent with oil resistance and its application. Background technique

[0002] With the deepening of oil exploration and development, most of my country's oil fields have entered the stage of high water cut or even extremely high water cut development. How to improve the development effect of these old oil fields and how to improve the oil recovery of oil reservoirs after polymer flooding are becoming more and more important. more and more people's attention and attention. These oil fields are in urgent need of new tertiary oil recovery technology to enhance the recovery of crude oil, so as to increase the recoverable reserves of crude oil. Among them, the low-tension foam flooding technology is the most eye-catching and promising oil recovery technology under the current situation. Volume, so that oil recovery has been greatly improved. Low-...

Claims

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