A kind of polyoxyethylene isomerized tridecyloxypropylamine and its preparation method and application

A technology of tridecyloxypropylamine and polyoxyethylene, applied in the preparation of amino hydroxyl compounds, chemical instruments and methods, and the preparation of organic compounds, can solve the problem of high temperature and surfactant prices that are difficult to adapt to low-permeability reservoirs Expensive, little application value and other problems, to achieve the effect of improving the balance of hydrophilic and lipophilic, increasing the feasibility of application, and improving the effect
CN108101794BActive Publication Date: 2020-05-08PETROCHINA CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
PETROCHINA CO LTD
Publication Date
2020-05-08

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Abstract

The invention provides polyoxyethylene isomeric tridecane oxypropylamine as well as a preparation method and application thereof. The structural formula of the polyoxyethylene isomeric tridecane oxypropylamine is shown as a formula (1), wherein n1 is 1 to 5 and n2 is 1 to 5. The polyoxyethylene isomeric tridecane oxypropylamine provided by the invention is a novel branched non-ionic surfactant which has the advantages that the affinity between an alkyl chain in a molecular structure and a non-polar solvent is improved, the hydrophile-lipophile balance of the surfactant is improved, applicationfeasibility of the surfactant is improved and the application prospect is relatively high; the surfactant can stabilize foam after water is protonized in stratum, thereby inhibiting channeling of CO2in a water layer, improving the CO2 flooding effect and realizing the effect of inhibiting gas channeling. (The formula is shown in the description).
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Description

technical field

[0001] The invention belongs to the technical field of oil exploitation, and relates to a polyoxyethylene isotridecyloxypropylamine and a preparation method and application thereof. Background technique

[0002] Due to the difficulty of water injection in low-permeability reservoirs, formation energy cannot be effectively replenished. In this case, gas injection can be used to enhance oil recovery. Field tests show that the apparent air absorption index during gas injection can be more than 7 times that of the corresponding index of water injection, which shows that gas injection has great application potential in the development of low permeability reservoirs. The gas injected into the formation can choose CO 2 , N 2 even air, but due to CO 2 Miscible with underground crude oil, and inject CO generated during industrial production 2 The purpose of underground storage can be realized at the same time, so CO 2 Gas flooding is currently the most widely us...

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
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