Preparation method of novel viscosity reducer for thick oil

A heavy oil viscosity reducer, a new type of technology, applied in the field of preparation of new heavy oil viscosity reducer, can solve the problems of poor emulsification viscosity reduction effect, large fixed investment, large processing capacity, etc., to reduce the viscosity of heavy oil and improve the production process Simple, viscosity-reducing effect

Active Publication Date: 2018-11-13
山东东方盛嘉石油科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The physical viscosity reduction method has the disadvantages of large fixed investment, high energy consumption, and short effective period of viscosity reduction.
The chemical viscosity reduction method has poor temperature resistance and salt resistance, and the heavy oil produced is

Method used

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  • Preparation method of novel viscosity reducer for thick oil
  • Preparation method of novel viscosity reducer for thick oil

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] Example 1

[0011] Weigh 100 parts by weight of toluene and place it in the reactor, then add 30 parts of methyl methacrylate, 9 parts of styrene, and ultrasonically disperse for 30 minutes. Then add 5 parts of maleic anhydride and 3 parts of acrylamide in sequence. The reactor is heated to Stir at a constant temperature of 60℃ for 1~2h. After the monomer is completely dissolved, fill the reactor with 60% nitrogen and 40% neon for 30min, then raise the temperature to 75~80℃, and slowly add 0.8 parts of benzene peroxide to the reactor Formyl, the temperature is lowered to 65~70℃ after 4 hours of heat preservation, 16 parts of nano-KH550-CMK-3 composite material is added to continue the heat preservation reaction for 2~3h, and the material is discharged to obtain a new type of thick oil viscosity reducer.

[0012] The preparation method of the above-mentioned nano-KH550-CMK-3 composite material is as follows:

[0013] Add 75 parts of absolute ethanol, 30 parts of deionized wate...

Example Embodiment

[0014] Example 2

[0015] It is exactly the same as Example 1, except that 30 parts of methyl methacrylate, 12 parts of styrene, 11 parts of maleic anhydride, and 4 parts of acrylamide are added.

Example Embodiment

[0016] Example 3

[0017] It is exactly the same as Example 1, except that 30 parts of methyl methacrylate, 15 parts of styrene, 8 parts of maleic anhydride, and 5 parts of acrylamide are added.

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Abstract

The invention discloses a preparation method of a novel viscosity reducer for thick oil. According to the preparation method, methyl methacrylate, styrene, acrylamide and maleic anhydride are taken asraw materials, and the viscosity reducer for the thick oil is prepared by using aqueous solution polymerization and physical compounding methods; the viscosity reducer for the thick oil is prepared from the following raw materials in parts by weight: 30-50 parts of methyl methacrylate, 9-15 parts of styrene, 5-11 parts of acrylamide and 3-5 parts of maleic anhydride. According to the method, an oil-soluble polymer is obtained by using an initiator to initiate a polymerization reaction of monomers; after a small amount of the product is added into crude oil, the viscosity of the crude oil canbe effectively reduced, and the recovery rate of the thick oil is increased; therefore, the novel viscosity reducer is suitable for development and utilization in oilfields with thick oil.

Description

technical field [0001] The invention relates to the field of preparation of oilfield chemical additives, in particular to a preparation method of a novel heavy oil viscosity reducer. Background technique [0002] With the continuous decline of recoverable volume and output of conventional crude oil, its exploitation can no longer meet people's demand for resources, and the exploitation of heavy oil has received extensive attention at home and abroad. The composition of heavy oil is relatively complex, containing a large amount of macromolecular organic matter such as wax, colloid, asphaltene, and a small amount of heavy metals, making its density and viscosity much higher than that of light crude oil. It has poor fluidity at room temperature and is extremely difficult to mine and transport. , the industrial cost is expensive. Therefore, reducing the viscosity of heavy oil and enhancing the fluidity of heavy oil has become a hot and difficult issue in the research of oilfiel...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F212/08C08F222/06C08F220/06C08F2/44C08K9/06C09K8/588
CPCC08F2/44C08F220/14C08K9/06C09K8/588C08F212/08C08F222/06C08F220/06
Inventor 张素兰何琳
Owner 山东东方盛嘉石油科技有限责任公司
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