Preparation method of composite multifunctional sterilization agent for oil field

A manufacturing method and composite technology, applied in chemical instruments and methods, sterilization/microdynamic water/sewage treatment, special treatment targets, etc., can solve the problems affecting water quality stability, system blockage, content increase, etc. Significant benefits and economic benefits, reducing the burden, reducing the effect of adsorption

Inactive Publication Date: 2019-03-22
滨州市丰泰技术开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, corrosion and bacteria increase the content of unstable substances such as iron ions and sulfides in the water, and the formation and precipitation of unstable substances further affect the stability of water quality. At the same time, corrosion products and scales in pipelines and structures are not cleaned in time, which also causes system blockage.

Method used

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  • Preparation method of composite multifunctional sterilization agent for oil field
  • Preparation method of composite multifunctional sterilization agent for oil field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of manufacture method of composite multifunctional bactericide for oil field, comprises the following steps,

[0025] Step 1: Put 100kg of octadecylamine and 100g of potassium hydroxide into the reaction vessel one by one, heat up and vacuum dehydrate for a period of time, continuously feed a certain amount of 1000kg of ethylene oxide, heat up and control the reaction temperature and reaction pressure at a certain level Within the scope of feeding, after the feeding is completed, the pressure is reduced and vacuum dehydration is performed for a certain period of time, and the product 1 is obtained after cooling down. In this step, the weight ratio of octadecylamine to ethylene oxide is 1:10, and the weight of potassium hydroxide accounts for ethylene oxide. 3‰ of alkane;

[0026] Step 2: Add a certain proportion of 1680kg dodecyl tertiary amine and deionized water in the reaction vessel two, then add 1000kg benzyl chloride dropwise after heating up and keep the r...

Embodiment 2

[0030] A kind of manufacture method of composite multifunctional bactericide for oil field, comprises the following steps,

[0031] Step 1: Put in a certain proportion of 50kg hexadecylamine and 50g potassium hydroxide successively in the reaction vessel 1. After heating up for vacuum dehydration for a period of time, continuously feed a certain amount of 500kg ethylene oxide, raise the temperature and reduce the reaction temperature and reaction pressure. Control within a certain range. After the feeding is completed, the pressure is reduced and the vacuum dehydration is performed for a certain period of time. After cooling down, the product 1 is obtained. In this step, the weight ratio of hexadecylamine to ethylene oxide is 1:10, and the weight of potassium hydroxide accounts for 3‰ of ethylene oxide;

[0032] Step 2: Add a certain proportion of 940kg tetradecyl tertiary amine and deionized water in the reaction vessel two, then add 500kg benzyl chloride dropwise after heati...

Embodiment 3

[0036] Step 1: Put 100kg octylamine and 100g potassium hydroxide into the reaction vessel one by one, heat up and vacuum dehydrate for a period of time, then feed a certain amount of 1000kg ethylene oxide continuously, heat up and control the reaction temperature and reaction pressure at a certain Within the range, after the feeding is completed, the pressure is reduced and vacuum dehydration is performed for a certain period of time, and the product 1 is obtained after cooling down. In this step, the weight ratio of octylamine to ethylene oxide is 1:10, and the weight of potassium hydroxide accounts for 1% of ethylene oxide. 3‰;

[0037] Step 2: Add a certain proportion of 1680kg tetradecyl tertiary amine and deionized water in the reaction vessel two, then add 1000kg benzyl chloride dropwise after heating up and keep the reaction temperature, after the benzyl chloride has been added dropwise, the product two is obtained. The weight ratio of tetradecyl tertiary amine and benz...

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Abstract

The invention discloses a preparation method of a composite multifunctional sterilization agent for an oil field. The method comprises the following steps of sequentially adding octadecylamine and potassium hydroxide according to a certain ratio into a first reaction container; raising the temperature; performing vacuum dewatering for a period of time; then, continuously introducing a certain amount of epoxy ethane; after the feeding is completed, lowering the pressure, starting the vacuum dewatering for a certain time; after the temperature lowering, obtaining a first product; 2, adding a certain amount of tertiary amine and deionized water into a second reaction container; after the temperature rise, dripping benzyl chloride; maintaining the reaction temperature; after the benzyl chloride dripping is completed, obtaining a second product; 3, adding a certain quantity of the first product, the second product, quaternary phosphonium salt, organic phosphonic acid and water into the second reaction container; performing heating and sufficient stirring to obtain a third product. The FTS-04 oil field polymer-containing sewage has stable water quality; one agent has multifunction and can completely replace a sterilization agent, a corrosion inhibitor and a scale inhibitor; on the basis of not increasing the agent consumption, the effect of multifunction of one agent is achieved; thechemical addition work procedure is simplified.

Description

technical field [0001] The invention relates to the technical field of oilfield water treatment, in particular to a method for manufacturing a composite multifunctional bactericide for oilfields. Background technique [0002] Oilfield produced water contains a certain amount of crude oil, and a variety of chemicals are added in the process of exploitation and treatment. At the same time, it is accompanied by factors such as high temperature, high salinity, and harmful gases. The composition is complex, resulting in the diversity and complexity of oilfield produced water. Complexity. After years of polymer injection and thermal recovery development in Gudao Oilfield, due to the combined effects of polymers, hydrogen sulfide, carbon dioxide, dissolved oxygen, bacteria and other components, the water quality of the sewage treated by the joint station along the water supply and injection system is unstable, corrosion, Severe structure, easy to cause pipeline blockage. The wate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/14C02F1/50C02F103/10
CPCC02F1/50C02F5/14C02F2103/10C02F2303/04C02F2303/08C02F2303/22
Inventor 邹新华高泉陈伟王恒强李朋
Owner 滨州市丰泰技术开发有限公司
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