Preparation method for intermediate base-cycloalkyl crude oil emulsion de-emulsifier and product thereof

A technology of naphthenic crude oil and demulsifier, which is applied in the direction of dehydration/demulsification by chemical methods, can solve the problems of high demulsification temperature, slow demulsification speed and poor adaptability, and achieves simple synthesis process, mild operating conditions, The effect of low production cost

Active Publication Date: 2012-11-21
克拉玛依市天明化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of using naphthenic heavy oil is poor adaptability, slow demulsification speed, low final water removal, and no obvious gradient change in the demulsification process
And the amount of demulsifier is required to be large, etc.
[0004] Chinese patent CN1810933A is a heavy oil demulsifier and its preparation method, which discloses that the heavy oil

Method used

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  • Preparation method for intermediate base-cycloalkyl crude oil emulsion de-emulsifier and product thereof
  • Preparation method for intermediate base-cycloalkyl crude oil emulsion de-emulsifier and product thereof
  • Preparation method for intermediate base-cycloalkyl crude oil emulsion de-emulsifier and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0021] Example 1

[0022] Add 50kg of tetraethylenepentamine to the autoclave, 1.5kg of potassium hydroxide catalyst temperature control at 110-120°C to control the pressure of the autoclave to 0.2-0.3MPa, and pressurize 800kg of ethylene oxide with nitrogen to polymerize to obtain oil head A. Take 100kg of synthetic oil head A and put it into the reactor, heat it to 134~150℃, add 2.5kg of potassium hydroxide catalyst, press nitrogen into 660kg of propylene oxide for polymerization, and press nitrogen into ethylene oxide at 110~128℃ 200kg of alkane was polymerized to obtain a block polyether polymer compound. After the synthetic block polyether is neutralized, bleached, filtered, etc., take 550kg into the mixing kettle, add 220kg methanol, 200kg water, 5kg synergist butyl cellosolve, and stir for 1-2 hours to obtain the demulsifier The product number is 1# demulsifier.

Example Embodiment

[0023] Example 2

[0024] Add 120kg of pentaethylene hexaamine and 2.0kg of catalyst to the autoclave with a mixture of potassium hydroxide and calcium hydroxide in a weight ratio of 2:1. The temperature is raised to 105~125℃, the pressure range is adjusted to 0.1~0.32MPa, and nitrogen pressure is used. Into 800kg of ethylene oxide polymerization reaction to obtain oil head A. Take 150kg of synthetic oil head A and put it into the reactor, heat it to 110~145℃, add 2.0kg of potassium hydroxide catalyst, press nitrogen into 800kg of propylene oxide at 145℃ for polymerization, and press nitrogen into it at 115~130℃ 550 kg of ethylene oxide was polymerized to obtain a block polyether polymer compound. After the synthetic block polyether is neutralized, bleached, filtered, etc., take 700kg, 300kg of water and 350kg of methanol and put it into the reactor, add 5kg of synergist hydrochloric acid, stir it evenly, and then add it, and heat to 60~80℃ After the reaction is completed in 1 ...

Example Embodiment

[0025] Example 3

[0026] Add 120kg of ethylenediamine into the autoclave, 1.5kg of catalyst is mixed with calcium hydroxide and sodium hydroxide in a weight ratio of 1:2, heat up to 105~125℃, adjust the pressure range to 0.15~0.25MPa, press into the ring with nitrogen 900kg of oxyethane was polymerized to obtain oil head A. Take 100kg of synthetic oil head A and put it into the reactor, heat it to 128~146℃, add 2.5kg of sodium hydroxide catalyst, press 720kg of propylene oxide with nitrogen at 130~145℃, and press with nitrogen at 120~130℃ Add 550kg of ethylene oxide and polymerize to obtain block polyether polymer compound. After the synthetic block polyether is neutralized, bleached, filtered, etc., 800kg, 310kg of water, 400kg of ethanol are taken, put into the reactor, 6kg of synergist formic acid is added, stirred and heated at 40-60°C for 1 to 1.5 hours to complete the reaction. The demulsifier product is obtained, and the number is 3# demulsifier.

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Abstract

The invention relates to a preparation method for an intermediate base-cycloalkyl crude oil emulsion de-emulsifier and a product thereof, which belongs to the chemical used for petroleum industry technical field. According to the invention, polyamine or polyethylene polyamine as an initiator, and is copolymerized with epoxypropane and ethylene oxide, post-treated to obtain a block polyether product, the obtained block polyether is complexed with alcohol water according to a certain proportion, and a synergy auxiliary agent is added to obtain the de-emulsifier with characteristics of low temperature, rapidity and high efficiency. The present invention solves the problems of the prior art, such as high demulsifying temperature, large use level and poor dehydration speed of intermediate base-cycloalkyl crude oil emulsion in Karamay region. The de-emulsifier has the advantages of low temperature, rapidity, high efficiency and wide application scope.

Description

technical field [0001] The invention belongs to the technical field of chemicals used in the petroleum industry, and in particular relates to a preparation method of an intermediate group-cycloalkyl emulsion crude oil demulsifier and a product thereof. Background technique [0002] Water in crude oil is a common phenomenon in the development of oil and gas fields. It not only brings a series of difficulties to crude oil extraction, but also has adverse effects on oil and gas gathering and transportation, processing and refining. Therefore, crude oil dehydration is an essential link in the crude oil production process. As oilfields take measures to increase water injection and steam injection to increase oil well fluid production in large areas, the water content of oil well produced fluids rises rapidly. At the same time, a large number of applications of various oil recovery additives have also made crude oil, especially in recent years, with the promotion of tertiary oil ...

Claims

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Application Information

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IPC IPC(8): C10G33/04C08G65/26
Inventor 王明宪王新龙许海涛李玉军杨利吴伟龙
Owner 克拉玛依市天明化工有限责任公司
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