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Thick oil viscosity reducer, preparation method thereof and thick oil viscosity reduction method

A technology of viscosity reducer and viscous oil, which is applied in chemical instruments and methods, earthwork drilling, drilling composition, etc., can solve the problems of complex operation in polymer synthesis process, difficult control of polymerization degree, influence of viscosity reduction effect, etc. , to achieve the effect of simple preparation, environmental protection, low cost and low price

Active Publication Date: 2021-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned existing oil-soluble viscosity reducers are mainly developed on the basis of pour point depressants, and mainly use high molecular polymers for viscosity reduction and solvent dilution. There are few types, and the polymer synthesis process is complicated and the degree of polymerization is low. It is not easy to control, and the polymer and molecular weight have a certain influence on the viscosity reduction effect, the preparation is difficult, and unreacted monomers will also have adverse effects on the environment

Method used

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  • Thick oil viscosity reducer, preparation method thereof and thick oil viscosity reduction method
  • Thick oil viscosity reducer, preparation method thereof and thick oil viscosity reduction method
  • Thick oil viscosity reducer, preparation method thereof and thick oil viscosity reduction method

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preparation example Construction

[0025] According to the second aspect of the present invention, the present invention provides a kind of preparation method of heavy oil viscosity reducer, comprising: (1) preparing biological phenol-aldehyde oligomer; (2) combining biological phenol-aldehyde oligomer with permeate agent mix.

[0026] The preparation method of the biophenol-aldehyde oligomer comprises: reacting the biophenol compound and the aldehyde in the presence of a catalyst, the mass ratio of the biophenol to the aldehyde is 10-30:1, preferably 12 ~20:1.

[0027] The biophenol is cardanol and / or cashew nut shell liquid. The aldehydes can be formaldehyde or paraformaldehyde.

[0028] Those skilled in the art should understand that the cardanol is a mixture of phenol derivatives, mainly including monohydric phenol shown in formula 1 and dihydric phenol shown in formula 2;

[0029]

[0030] In formula 1 and formula 2, the general formula of R is C 15 h 25～31 , and R is a saturated straight-chain alk...

Embodiment 1

[0064] This example is used to illustrate the heavy oil viscosity reducer and the heavy oil viscosity reducer method of the present invention.

[0065] (1) Preparation of biophenol-aldehyde oligomers

[0066] Add 60 g of cardanol and 13.7 g of 36% formaldehyde solution in the three-necked flask, then add 1.47 g of p-toluenesulfonic acid and 75 g of xylene, and install a stirrer, reflux condenser, water separator and thermometer on the three-necked flask respectively. Under the condition of 200r / min, the temperature was raised to 90°C for 2 hours, and then the temperature was raised to 140°C for 2 hours to obtain the biophenol-aldehyde oligomer P1.

[0067] (2) Preparation of heavy oil viscosity reducer

[0068] At 40°C, 0.5 g of perfluorooctane sulfonyl fluoride was added to 10 g of the biophenol-aldehyde oligomer P1 prepared in step (1), and stirred for 30 minutes to dissolve it to obtain thick oil viscosity reducer A1.

[0069] (3) Thick oil viscosity reduction

[0070] A...

Embodiment 2

[0073] This example is used to illustrate the heavy oil viscosity reducer and the heavy oil viscosity reducer method of the present invention.

[0074] (1) Preparation of biophenol-aldehyde oligomers

[0075] Add 60 g of cardanol and 4.0 g of paraformaldehyde in a three-necked flask, then add 1.30 g of p-toluenesulfonic acid and 32 g of xylene. Biophenol-aldehyde oligomer P2 was prepared under the same reaction conditions as in Example 1.

[0076] (2) Preparation of heavy oil viscosity reducer

[0077] At 20°C, 0.1 g of perfluorooctanoic acid was added to 10 g of the biophenol-aldehyde oligomer P2 prepared in step (1), and stirred for 10 minutes to dissolve it to obtain thick oil viscosity reducer A2.

[0078] (3) Thick oil viscosity reduction

[0079] Add 0.05 g of thick oil viscosity reducer A2 to 20 g of thick oil-2, and stir and dissolve at 120°C for 4 hours to obtain a mixed oil.

[0080] The dynamic viscosity of the mixed oil at 50°C and the stability results after a...

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Abstract

The invention relates to the technical field of thick oil viscosity reduction, and discloses a thick oil viscosity reducer, a preparation method thereof and a thick oil viscosity reduction method. The thick oil viscosity reducer contains a biological phenol-aldehyde oligomer and a penetrant, the biological phenol-aldehyde oligomer is prepared by reacting cardanol and / or cashew nut shell oil with aldehydes in the presence of a catalyst, and the penetrant is a fluorocarbon surfactant. When the thick oil viscosity reducer is used for reducing the viscosity of thick oil, the dynamic viscosity of the thick oil can be effectively reduced, and the thick oil subjected to viscosity reduction can be kept stable for a long time under a high-temperature condition. The thick oil viscosity reducer has the characteristics of low use concentration, low cost, simplicity in preparation and environment friendliness.

Description

technical field [0001] The invention relates to the technical field of viscosity reduction of heavy oil, in particular to a viscosity reduction agent for heavy oil, a preparation method thereof and a method for viscosity reduction of heavy oil. Background technique [0002] With the increasing demand for oil and the constant consumption of ordinary crude oil, the extraction of heavy oil is becoming more and more important. Heavy oil resources are abundant in the world, which is a huge potential resource and will play an increasingly important role in future crude oil production. Among them, my country's Shengli Oilfield, Liaohe Oilfield, Tahe Oilfield, and Zhongyuan Oilfield Reservoirs are very rich in geological resources, reducing the viscosity of heavy oil is the main problem to be solved in the process of heavy oil development and lifting. [0003] Chemical viscosity reduction is one of the more commonly used heavy oil production methods, mainly including emulsification ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C09K8/584C09K8/588C08G8/24E21B43/22
CPCC09K8/58C09K8/584C09K8/588C08G8/24E21B43/16
Inventor 高敏江建林乔富林
Owner CHINA PETROLEUM & CHEM CORP
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