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Anti-swelling oil-displacing agent as well as preparing method and using method thereof

A swelling oil displacing agent and technology for oil displacing agent are applied in the field of anti-swelling oil displacing agent and its preparation, which can solve the problems of no oil displacing effect and low anti-swelling rate of the anti-swelling agent, and achieve good anti-swelling effect and strong adaptability properties, improve the effect of water flooding

Inactive Publication Date: 2013-09-18
KARAMAY ZHENGCHENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an anti-swelling oil displacement agent and its preparation method and application method, which overcomes the deficiencies of the above-mentioned prior art, and can effectively solve the problems of low anti-swelling rate and no oil displacement effect of conventional anti-swelling agents

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, the anti-swelling oil displacement agent raw material is composed of 1% to 8% inverse demulsifier, 1% to 9% petroleum demulsifier, 1% to 18% potassium chloride and the balance Deionized water; wherein, the anti-swelling oil displacement agent is obtained according to the following preparation method: first add the required amount of potassium chloride to deionized water, heat and stir at 30°C to 70°C until the potassium chloride is completely dissolved Finally, potassium liquid is obtained, and then the required amount of reverse phase demulsifier and petroleum demulsifier are mixed together and reacted at 80°C to 140°C for 60min to 240min to obtain colostrum, and finally potassium liquid is added to the colostrum at 30 The anti-swelling oil displacement agent is obtained after reacting for 10 minutes to 20 minutes under the condition of ℃ to 70 ℃.

Embodiment 2

[0016] Embodiment 2, this anti-swelling oil displacement agent raw material is composed of 1% or 8% inverse demulsifier, 1% or 9% petroleum demulsifier, 1% or 18% Potassium Chloride and surplus Deionized water; wherein, the anti-swelling oil displacement agent is obtained by the following preparation method: first add the required amount of potassium chloride to deionized water, heat and stir at 30°C or 70°C until the potassium chloride is completely dissolved Finally, potassium liquid is obtained, and then the required amount of inverse demulsifier and petroleum demulsifier are mixed together and reacted at 80°C or 140°C for 60min or 240min to obtain colostrum, and finally potassium liquid is added to the colostrum at 30 The anti-swelling oil displacement agent is obtained after reacting for 10 minutes or 20 minutes under the condition of ℃ or 70 ℃.

Embodiment 3

[0017] Embodiment 3, as the preference of the above embodiment, the reverse phase demulsifier is the model ZCF-01 reverse phase demulsifier produced by Karamay Zhengcheng Co., Ltd.

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Abstract

The invention relates to the technical field of an anti-swelling agent used in oil exploitation, and in particular relates to an anti-swelling oil-displacing agent as well as a preparing method and a using method of the anti-swelling oil-displacing agent. The anti-swelling oil-displacing agent comprises the raw materials by mass percent: anti-phase demulsifier, petroleum demulsifier, potassium chloride and the balance of deionized water, wherein the anti-swelling oil-displacing agent is prepared by the method comprising the following steps: firstly, adding the required amount of potassium chloride into the deionized water, heating and stirring until the potassium chloride is completely dissolved to obtain potassium liquid; then, mixing the required amount of anti-phase demulsifier with the required amount of petroleum demulsifier, mixing the required amount of anti-phase demulsifier with the required amount of petroleum demulsifier for reaction to obtain primary emulsion; and finally, adding the potassium liquid into the primary emulsion to react to obtain the anti-swelling oil-displacing agent. Compared with the existing conventional anti-swelling agent, the anti-swelling oil-displacing agent has better anti-swelling effect; when being used for reinjection sewage work environment, the anti-swelling oil-displacing agent improves the effect of displacing oil from water, thus having better adaptability to the water of an oil field.

Description

technical field [0001] The invention relates to the technical field of anti-swelling agents in oil exploitation, and relates to an anti-swelling oil-displacing agent and a preparation method and a use method thereof. Background technique [0002] The conventional anti-swelling agents currently used in oil fields include quaternary ammonium salts, polyquaternary amines, long-acting anti-swelling agents produced by the reaction of primary amines and epichlorohydrin, and anti-swelling agents produced by the reaction of polyamines and epichlorohydrin, etc. . However, the existing conventional anti-swelling agent has poor adaptability, especially when it is used in the working environment of reinjecting sewage. The conventional anti-swelling agent is measured on an indoor centrifugal device according to the industry (SY / T5971-1994) standard. The anti-swelling rate is 80%. According to the industry (SY / T5277-2000) standard, the oil-displacing rate is 0% measured on the indoor oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/584E21B43/22
Inventor 王国瑞李荣王红彬曹金园
Owner KARAMAY ZHENGCHENG
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