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Viscous oil viscosity reducer

A heavy oil viscosity reducer and technology of viscosity reducer, applied in the field of heavy oil viscosity reducer, can solve problems such as loss of viscosity reduction effect

Active Publication Date: 2013-01-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such substances usually only need tens to hundreds of milligrams per liter to significantly reduce the viscosity of crude oil, but they are only suitable for crude oil with high wax content, and are only effective at relatively low temperatures, usually losing the viscosity-reducing effect above 50°C

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 2g of β-cyclodextrin and 0.2g of isooctyl alcohol polyoxyethylene ether with a polymerization degree of 3 to 30g of 60% (mass percent) propionic acid aqueous solution to prepare a solution, mix it with 70g of toluene, and mix it uniformly with a homogenizer lotion. Take 0.5g of the prepared emulsion, add it to 100g of thick oil with a viscosity of 32000mPa·s at 50°C and mix evenly, the viscosity drops to 27200mPa·s.

Embodiment 2

[0025] Add 1.5 g of β-cyclodextrin and 0.15 g of n-heptyl polyoxyethylene ether with a polymerization degree of 5 to 40 g of ethanol, mix with 60 g of o-xylene, and mix with a homogenizer. Take 0.5g of the prepared solution and add to 100g

[0026] In the heavy oil with a viscosity of 32000mPa·s at 50°C and mixed evenly, the viscosity will drop to 24800mPa·s.

Embodiment 3

[0028] Add 1g of β-cyclodextrin and 0.1g of n-nonanol polyoxyethylene ether with a polymerization degree of 3 to 50g of 40% (mass percent) ethylamine aqueous solution to prepare a solution, mix it with 50g of ethylbenzene, and mix it with a homogenizer to obtain Even lotion. Take 0.5g of the prepared emulsion, add it to 100g of heavy oil with a viscosity of 25400mPa·s at 50°C and mix evenly, the viscosity drops to 17800mPa·s.

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PUM

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Abstract

The invention relates to a viscous oil viscosity reducer. The viscous oil viscosity reducer comprises hydrocarbon oil, beta-cyclodextrin, fatty alcohol polyoxyethylene ether and a hydrophilic component, wherein the mass of the hydrocarbon oil accounts for 0.25-2.5 of the mass of the hydrophilic component, the mass of the beta-cyclodextrin accounts for 0.006-0.33 of the mass of the hydrophilic component, and the mass of the fatty alcohol polyoxyethylene ether accounts for 0.0006-0.033 of the mass of the hydrophilic component; the hydrophilic component comprises one or more of C1-C4 monocarboxylic acid, C1-C4 monohydric alcohol, C1-C4 monoamine and C1-C4 amide; and the fatty alcohol polyoxyethylene ether is polyoxyethylene ether obtained through treating fatty alcohol as an initiator, the fatty alcohol treated as the initiator is C4-C20 straight-chain or branched-chain fatty alcohol, and the polymerization degree of oxyethylene is 2-10. The viscous oil viscosity reducer is a solution or a micro-emulsion.

Description

technical field [0001] The invention relates to a heavy oil viscosity reducer. Background technique [0002] With the continuous increase of oil demand and the continuous consumption of ordinary crude oil, people pay more and more attention to heavy oil resources. Heavy oil reserves are quite abundant in the world, and the huge amount of resources makes heavy oil expected to become the main energy source in the 21st century. However, the development and utilization of heavy oil resources still face many problems, one of which is the colloid and asphalt in heavy oil. The high quality content makes it highly viscous and poor in fluidity, resulting in difficult mining and low recovery. [0003] Thinning and viscosity reduction is a widely used heavy oil recovery process. In this process, distillate oil, thin crude oil or other organic solvents are used as diluents, which are injected into the wellbore and mixed with heavy oil, so that the viscosity is greatly reduced and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/58C09K8/588
Inventor 罗咏涛秦冰
Owner CHINA PETROLEUM & CHEM CORP
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