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Heavy oil viscosity reducer and preparation method thereof

The technology of viscosity reducer and catalyst for heavy oil is applied in chemical instruments and methods, drilling compositions and other directions, which can solve the problems of complex production process, high viscosity of heavy oil and high production cost, and achieve simple production process, High degree of mechanization and obvious effect of reducing viscosity

Inactive Publication Date: 2016-05-04
扬州润达油田化学剂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the problems of high viscosity of heavy oil, complex recovery process and high production cost, the present invention provides a viscosity reducer for heavy oil and its preparation method. Effectively reduce the viscosity of heavy oil

Method used

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  • Heavy oil viscosity reducer and preparation method thereof

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Effect test

Embodiment 1

[0015] Put 160g of fatty acid methyl ester into a 2L reaction kettle equipped with a stirrer, condensing reflux, thermometer and heating mantle, heat up to 50°C, seal the reaction kettle, and after the vacuum pump vacuumizes, feed N 2 After purging for 20 minutes, stir and raise the temperature to 135°C. Under the pressure of 0.2mpa, add 20g of sodium hydroxide, dropwise add 400g of ethylene oxide, then dropwise add 100g of propylene oxide, react for 8 hours, cool to 50°C, and add 300g Lauryl dimethyl betaine, 300g of methanol, and 600g of water are mixed evenly to obtain the finished viscosity reducer.

Embodiment 2

[0017] Put 150Kg of fatty acid methyl ester into a 2m tank equipped with stirrer, condensing reflux, thermometer and heating mantle 3 In a stainless steel reaction kettle, heat up to 50°C, seal the reaction kettle, vacuumize it with a vacuum pump, and feed N 2 After purging for 20 minutes, stir and raise the temperature to 135°C. Under the pressure of 0.3mpa, add 20Kg of potassium hydroxide, dropwise add 500Kg of ethylene oxide, then dropwise add 120Kg of propylene oxide, react for 7 hours, cool to 60°C, and add 400kg Lauryl dimethyl betaine, 220Kg methanol, and 500Kg water are mixed evenly to obtain the finished viscosity reducer.

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Abstract

The invention relates to a heavy oil viscosity reducer and a preparation method thereof. According to the method, monomers in certain quantities are weighed in a charging ratio, fatty acid methyl ester is placed in a sealable reaction container firstly, heated to 50 DEG C plus / minus 5 DEG C and subjected to vacuum pumping, then N2 is used for replacing residual air, a mixture is stirred and heated to 130-140 DEG C, a catalyst is added under the pressure of 0.2-0.4 mpa, ethylene oxide is added dropwise, then propylene oxide is added dropwise, the mixture reacts for 6-8 h, a product is cooled to the room temperature, dodecyl dimethyl betaine, methanol and water are added and mixed uniformly, and the finished viscosity reducer product is obtained. The heavy oil viscosity reducer has the characteristics of small dosage, good viscosity reducing effect and high usability for heavy oil.

Description

technical field [0001] The invention relates to a thick oil viscosity reducer and a preparation method thereof. Background technique [0002] With the continuous extraction of oil, the oil reserves on the earth, especially the conventional crude oil reserves, are constantly decreasing. Among the proven oil resources, the proportion of heavy oil is increasing, and the exploitation of heavy oil is becoming more and more important. However, due to the special characteristics of high viscosity and high freezing point of heavy oil, some technical difficulties are encountered in various aspects of development and application. Moreover, heavy oil contains more colloids and asphaltenes, which cause the fluidity of crude oil in reservoirs and well bores to deteriorate, and bring a lot of inconvenience to production. The special properties of heavy oil determine that the exploitation and transportation of heavy oil must be carried out around the viscosity reduction, pour point red...

Claims

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Application Information

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IPC IPC(8): C09K8/584C09K8/588
CPCC09K8/584C09K8/588
Inventor 王凯健
Owner 扬州润达油田化学剂有限公司
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