Patent EA-004853-B1 (EA)
Title: Oil production additive formulations and method of treating a petroleum product stream
Inventor: COX TERENCE
IPC: C10L1/14
Filed: 2000-11-27
Abstract: 1 A petroleum additive formulation which includes at least one petroleum additive dissolved in a carrier fluid including at least one compound of the formula (I): (R<2>)p-Ph-(CH2)m-COO-(AO)n-R (I) where R<1> is a C1 to C10 alkyl group; AO is an alkyleneoxy group which may vary along the (poly)alkyleneoxy chain; n is 0 or from 1 to 100; m is 0, 1 or 2; and Ph is a phenyl group, which may be substituted with groups (R<2>)p; where each R<2> is independently a C1 to C4 alkyl- or alkoxy group; and p is 0, 1 or 2. 2 A formulation as claimed in claim 1 wherein R<1> is a C1 to C6 alkyl group. 3 A formulation as claimed in claim 2 wherein R<1> is a C3 to C5 branched alkyl group. 4 A formulation as claimed in either claim 1 or claim 2 wherein n is 0, m is 0 and p is 0. 5 A formulation as claimed in any one of claims 1 to 4 wherein the carrier fluid is or includes iso-propyl benzoate or 2-ethylhexyl benzoate. 6 A formulation as claimed in any one of claims 1 to 5 wherein the at least one petroleum additive includes at least one demulsification agent and/or at least one desalting agent and/or at least one corrosion inhibitor. 7 A formulation as claimed in any one of claims 1 to 6 wherein the carrier fluid includes at least 50 % by weight of the total carrier fluid of a compound of the formula (I). 8 A formulation as claimed in any one of claims 1 to 7 wherein the additive is at least one demulsification agent and/or at least one desalting agent and/or at least one corrosion inhibitor. 9 A formulation as claimed in any one of claims 1 to 8 wherein the concentration of the additive is from 15 to 90 % by weight of the formulation. 10 A formulation as claimed in claim 9 wherein the additive includes at least one demulsification agent at a concentration of from 15 to 85 % by weight of the formulation. 11 A formulation as claimed in claim 9 wherein the additive includes at least one desalting agent at a concentration of from 15 to 85% by weight of the formulation. 12 A formulation as claimed in claim 9 wherein the additive includes at least one corrosion inhibitor at a concentration of from 70 to 90% by weight of the formulation. 13 A method of treating a petroleum product stream, in which at least one petroleum additive dissolved in a carrier fluid, including at least one compound of the formula (I), as defined in any one of claims 1 to 4, is introduced into the product stream. 14 A method as claimed in claim 13 wherein the petroleum additive is one or more of at least one demulsification agent and/or at least one desalting agent and/or at least one corrosion inhibitor. 15 A method as claimed in either claim 13 or claim 14 wherein the carrier fluid is or includes iso-propyl benzoate. 16 A method as claimed in any one of claims 13 to 15 wherein the carrier fluid includes at least 50 % by weight of the total carrier fluid of a compound of the formula (I). 17 A method as claimed in any one of claims 13 to 16 wherein the additive is a demulsifier, desalter or corrosion inhibitor. 18 A method as claimed in any one of claims 13 to 17 wherein the concentration of the additive is from 15 to 90 % by weight of the formulation. 19 A method as claimed in claim 18 wherein the additive includes at least one demulsification agent at a concentration of from 15 to 85 % by weight of the formulation. 20 A method as claimed in claim 18 wherein the additive includes at least one desalting agent at a concentration of from 15 to 85 % by weight of the formulation. 21 A method as claimed in claim 18 wherein the additive includes at least one corrosion inhibitor at a concentration of from 70 to 90 % by weight of the formulation. 22 A method as claimed in any one of claims 13 to 21 wherein the concentration of the additive in the petroleum is from 1 to 300 ppm by weight. 23 A method as claimed in claim 22 wherein the additive includes at least one demulsification agent and the concentration of the additive in the petroleum is from 5 to 150 ppm by weight. 24 A method as claimed in claim 22 wherein the additive includes at least one desalting agent and the concentration of the additive in the petroleum is from 2 to 100 ppm by weight. 25 A method as claimed in claim 22 wherein the additive includes at least one corrosion inhibitor and the concentration of the additive in the petroleum is from 1 to 25 ppm by weight. 26 A composition which is a solution of a non-ionic surfactant in a solvent which is or includes at least one compound of the formula (I) as defined in any one of claims 1 to 4.