Use of organic fluorochemical compounds with oleophobic and hydrophobic groups in asphaltenic crude oils as viscosity reducing agents
First Claim
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1. A method of reducing the viscosity of asphaltenic crude oils comprising incorporating into said crude oil an effective viscosity reducing amount of an oil soluble organic compound and about 1 to about 80 weight percent based on the weight of the total composition of an asphaltenic oil compatable low viscosity diluent;
- said oil soluble organic compound being of the formula
space="preserve" listing-type="equation">[(R.sub.f).sub.n R'"'"'].sub.m ZwhereinRf is an inert, stable, oleophobic and hydrophobic fluoroaliphatic group having about 4 to about 20 carbon atoms;
n is an integer from 1 to 3;
R'"'"' is a direct bond or an organic linking group having a valency of n+1 and is covalently bonded to both Rf and Z;
m is an intger of from 1 to about 5000; and
Z is a hydrocarbyl containing residue having a valency of m and being sufficientlky oleophilic so as to impart an oil solubility to said compounds of at least 10 parts per million by weight of asphaltenic crude oil; and
said low viscosity diluent having a viscosity at 20°
C. between about 25 and about 300 centipoise.
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Abstract
A method of reducing a viscosity of asphaltenic crude oils by incorporating into said crude oil an effective viscosity reducing amount of an oil soluble organic compound having at least one oleophobic and hydrophobic fluoroaliphatic group, and optionally a low viscosity diluent, and compositions thereof.
42 Citations
13 Claims
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1. A method of reducing the viscosity of asphaltenic crude oils comprising incorporating into said crude oil an effective viscosity reducing amount of an oil soluble organic compound and about 1 to about 80 weight percent based on the weight of the total composition of an asphaltenic oil compatable low viscosity diluent;
- said oil soluble organic compound being of the formula
space="preserve" listing-type="equation">[(R.sub.f).sub.n R'"'"'].sub.m Zwherein Rf is an inert, stable, oleophobic and hydrophobic fluoroaliphatic group having about 4 to about 20 carbon atoms; n is an integer from 1 to 3; R'"'"' is a direct bond or an organic linking group having a valency of n+1 and is covalently bonded to both Rf and Z; m is an intger of from 1 to about 5000; and Z is a hydrocarbyl containing residue having a valency of m and being sufficientlky oleophilic so as to impart an oil solubility to said compounds of at least 10 parts per million by weight of asphaltenic crude oil; and said low viscosity diluent having a viscosity at 20°
C. between about 25 and about 300 centipoise. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- said oil soluble organic compound being of the formula
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8. An asphaltenic crude oil composition comprising
(a) an asphaltenic crude oil containing between about 1% and 20% asphaltenes; -
(b) between about 10 to about 500 parts per million by weight, based on the weight of said asphaltenic crude oil, of a viscosity reducing oil soluble organic compound of the formula
space="preserve" listing-type="equation">[(R.sub.f).sub.n R'"'"'].sub.m Zwherein Rf is an inert, stable, oleophobic and hydrophobic fluoroaliphatic group having 4 to about 20 carbon atoms; n is an integer from 1 to 3; R'"'"' is a direct bond or an organic linking group having a valency of n+1 and is covalently bonded to both Rf and Z; m is an integer of from 1 to about 5000; and Z is a hydrocarbyl containing residue having a velency of m and being sufficeintly oleophilic so as to impart an oil solubility to said compounds of at least 10 parts per million by weight of said asphaltenic crude oil; and (c) a low viscosity asphaltenic oil compatable diluent, having a viscosity at 20°
C. between about 25 and about 300 centipoise, in an amount between about 1 and about 80 percent by weight based on the weight of said composition. - View Dependent Claims (9, 10, 11, 12, 13)
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Specification