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Oil-displacing discharge aiding agent as well as preparation method and application thereof

A technology of drainage aid and oil displacement, which is applied in the preparation of ether, sulfonic acid, and sulfate, etc., and can solve the problems of limited and poor development effect.

Active Publication Date: 2021-11-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide an oil displacement aid drainage agent and its preparation method and application, to solve the limited ability of the oil displacement aid drainage agent in the prior art to solve the problem of poor development effect after multi-cycle steam stimulation oil recovery question

Method used

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  • Oil-displacing discharge aiding agent as well as preparation method and application thereof
  • Oil-displacing discharge aiding agent as well as preparation method and application thereof
  • Oil-displacing discharge aiding agent as well as preparation method and application thereof

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preparation example Construction

[0020] In a typical implementation of the present application, a method for preparing an oil displacement aid is provided, the preparation method comprising: step S1, mixing coniferyl alcohol, ethylene oxide and the first solvent under alkaline conditions Carry out ring-opening reaction, obtain ring-opening compound; Step S2, ring-opening compound, SO 3 and the second solvent for a sulfonation reaction to obtain a sulfonate compound; step S3, mixing the sulfonate compound and a surface active substance to obtain an oil displacement aid; wherein the surface active substance is a fluorocarbon surfactant and a carbonic acid The mixture of ammonium hydrogen, the ring-opening compound and the sulfonate compound have the following structural formulas respectively:

[0021]

[0022] m + is a monovalent cation.

[0023] The application utilizes coniferyl alcohol and ethylene oxide in alkaline conditions (M + For the ring-opening reaction from the cation in the alkaline condition...

Embodiment 1

[0039] Take 1g of coniferyl alcohol, 2g of ethylene oxide, and 0.1g of sodium hydroxide in a 25mL three-necked flask, and add 10mL of dioxane solvent, and carry out the ring-opening reaction at 80°C for 5h, and wait until the temperature of the system drops to At room temperature, add water and wash it for 3 times to obtain a product system comprising a ring-opening compound; mix the product system comprising a ring-opening compound with 0.5gSO 3 10mL of dioxane solvent was subjected to sulfonation reaction at room temperature for 6h, and then extracted to obtain sodium sulfonate compound; 0.1g of fluorocarbon surfactant was mixed with 2g of ammonium bicarbonate to obtain surface active substances, and then Take 0.3g sodium sulfonate compound and 0.2g surface active substance and mix uniformly to obtain oil displacement aid drainage agent 1.

Embodiment 2

[0041] Take 1g coniferyl alcohol, 1g ethylene oxide, 0.15g sodium hydroxide, and carry out the ring-opening reaction at 85°C for 4h, wait for the temperature of the system to drop to room temperature, add water and wash it three times to obtain The product system of compound; Obtain the product system that comprises ring-opening compound; The product system that comprises ring-opening compound and 1gSO 3 10mL of dioxane solvent was subjected to sulfonation reaction at room temperature for 4h, and then extracted to obtain sodium sulfonate compound; 0.1g of fluorocarbon surfactant was mixed with 2g of ammonium bicarbonate to obtain surface active substances, and then Take 0.3g sodium sulfonate compound and 0.2g surface active substance and mix uniformly to obtain oil displacement aid 2.

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Abstract

The invention provides an oil-displacing discharge aiding agent as well as a preparation method and application thereof. The preparation method comprises the steps of S1, carrying out ring-opening reaction on coniferyl alcohol, ethylene oxide and a first solvent under an alkaline condition to obtain a product system containing a ring-opening compound; S2, carrying out sulfonation reaction on the product system containing the ring-opening compound, SO3 and a second solvent to obtain a sulfonate compound; and S3, mixing the sulfonate compound and a surface active substance to obtain the oil-displacing discharge aiding agent, wherein the surface active substance is a mixture of a fluorocarbon surfactant and ammonium bicarbonate, and the ring-opening compound and the sulfonate compound respectively have structural formulas shown in the description, and M < + > is a monovalent cation. The method is simple, low in cost and remarkable in effect of solving the problem that the multi-cycle steam huff and puff harvesting effect becomes poor.

Description

technical field [0001] The invention relates to the technical field of petroleum development, and relates to an oil displacement aid and drainage agent as well as a preparation method and application thereof. Background technique [0002] Steam huff and puff technology is one of the important technologies for the development of heavy oil reservoirs. This technology has the advantages of less investment, relatively simple process technology, rapid production increase and good economic benefits. However, after multi-cycle steam huff and puff production in heavy oil reservoirs, the formation pressure drops greatly and the underground water storage is large, which makes the thermal efficiency of steam injection worse, resulting in a longer recovery water period, lower oil-steam ratio, and more and more effective production. Therefore, how to further improve the development effect of multi-cycle steam huff and puff in heavy oil reservoirs and improve the recovery factor in the hu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584C07C41/03C07C41/26C07C43/23C07C303/24C07C305/06C07C303/06C07C309/09E21B43/22E21B43/24
CPCC09K8/584C07C41/03C07C41/26C07C303/24C07C303/06E21B43/16E21B43/24C07C43/23C07C305/06C07C309/09
Inventor 郑爱萍陈宏飞宋栋刘泠杉蒙延冲高军敬思伟董文波于岐
Owner PETROCHINA CO LTD
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