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| Number | Title | Issue Date |
| 7776931 | Low dosage naphthenate inhibitors Low dosage naphthenate inhibitors, such as a surfactant or hydrotrope, delivered into production fluids for contact with mixtures of oil and water, such as in a hydrocarbon producing formation, production equipment, or processing systems. Inhibitor compounds such as... | 08/17/2010 |
| 7776930 | Methods for inhibiting naphthenate salt precipitates and naphthenate-stabilized emulsions Inhibiting naphthenate salts that can form precipitates or emulsions during crude oil production or processing. An effective amount of a naphthenate inhibitor, such as a hydrotrope, is provided into the production fluids for contact with mixtures of oil and water in... | 08/17/2010 |
| 6989103 | Method for separating fluids Methods of treatment of fluids produced by an oil or gas well following a stimulation operation, allowing separation from the fluids and re-injection of oil and gas hydrocarbons in a production pipeline under pressure, and allowing achievement of suitable quality fo... | 01/24/2006 |
| 6727388 | Demulsifying compound and a method of breaking or inhibiting emulsions The present invention is a demulsifying and corrosion-inhibiting compound formed from the salt of an amphiphilic amine and an amphiphilic acid. In a preferred embodiment of the invention, the demulsifier may be a salt of an alkyl amine and an alkyl aryl sulfonic aci... | 04/27/2004 |
| 6316396 | Amphiphilic compounds with at least two hydrophilic and at least two hydrophobic groups based on di-, oligo- or polyolethers The invention relates to amphiphilic compounds of the general formula (I) with at least two hydrophilic and at least two hydrophobic groups based on di, oligo or polyolethers. The amphiphilic compounds of this invention are highly surface active and are s... | 11/13/2001 |
| 6221389 | Aqueous carrier systems for water-insoluble materials A composition containing at least one organic phospholipid capable of forming bilayers in aqueous solution;at least one amphoteric surfactant; and at least one nonionic surfactant present in an amount by weight equal to or greater than the amount of the p... | 04/24/2001 |
| 6066753 | Mixtures of long-chain alkyl phosphates The invention relates to mixtures of long-chain alkyl phosphates of the formula ##STR1## in which R is a mixture of C12 -C22, preferably C14 -C20, straight-chain alkyl radicals and C12 -C22 | 05/23/2000 |
| 6015574 | Lipophilic carrier systems A composition containing an organic phospholipid capable of forming bilayers in solution, a nonionic surfactant, and an amphoteric surfactant in a combined amount sufficient to allow lipophilic ingredients to be incorporated into an aqueous solution, and ... | 01/18/2000 |
| 5851433 | Method of and composition for breaking oil and water emulsions in crude oil processing operations Methods and compositions for breaking oil and water emulsions are disclosed. Oil and water emulsions are broken by treating the emulsion with a copolymer of tannin and a cationic monomer. The preferred composition is an aqueous solution of a copolymer of ... | 12/22/1998 |
| 5597513 | Demulsifier composition and method of use The present invention deals with compositions utilized to demulsify wash liquors, tramp oils or coolants. The compositions of the present invention are useful per se as cleaning compositions. The ability to rapidly demulsify from a waste liquor solution a... | 01/28/1997 |
| 5503774 | Class of bifunctional additives for bioremediation of hydrocarbon contaminated soils and water The present invention provides for enhanced bioremediation of hydrocarbon contaminated soils and waters by treating soil or water with a surfactant or mixture of surfactants having the general formulae: ##STR1## wherein A=CH2, B=CH2 | 04/02/1996 |
| 5478389 | Pollution remedial composition and its preparation Pollution remedial compositions are disclosed which comprise a soluble silicate, a surfactant, a polyol, and water.... | 12/26/1995 |
| 5474607 | Bitumen emulsions A method of modifying a cationic bitumen emulsion by initiating coalescence by either (i) adding a specific chemical agent or (ii) physical reaction. The method includes modifying the bitumen emulsion by combining a second emulsion with a primary emulsion... | 12/12/1995 |
| 5385695 | Demulsifier methods employing b-iminodipropionate The present invention deals with compositions utilized to demulsify wash liquors, tramp oils or coolants. The compositions of the present invention are useful per se as cleaning compositions. The ability to rapidly demulsify from a waste liquor solution a... | 01/31/1995 |
| 5245070 | Alkyl phosphates having a branched alkyl group A compound represented by the following general formula I; ##STR1## wherein R1, R2 and R3 independently represent a hygrogen atom, alkyl group or aryl group, provided that at least one of R1, R2 ... | 09/14/1993 |
| 5110503 | Demulsifying The present invention deals with compositions utilized to demulsify wash liquors, tramp oils or coolants. The compositions of the present invention are useful per se as cleaning compositions. The ability to rapidly demulsify from a waste liquor solution a... | 05/05/1992 |
| 4927519 | Method for controlling fouling deposit formation in a liquid hydrocarbonaceous medium using multifunctional antifoulant compositions A method for controlling the formation of fouling deposits in a liquid hydrocarbonaceous medium, wherein in the absence of such fouling inhibition, fouling deposits would normally be formed within said medium is disclosed. The method comprises adding to s... | 05/22/1990 |
| 4517102 | Method of breaking an emulsion and an emulsion-emulsion breaker composition This invention relates to a composition of matter and to a method for producing a controllable, residue-free break of an emulsion or a dispersion of a water-in-oil emulsion. An emulsion breaker is incorporated into the emulsion. It is temporarily-protecte... | 05/14/1985 |
| 4438026 | Solvent dewatering composition Water-displacing compositions based on fluorocarbon solvent FC-113 (1,1,2-trifluoro-1,2,2-trichloroethane) and certain surfactants are provided. These solutions serve to displace water from a broad range of substrates, including metals such as stainless-s... | 03/20/1984 |
| 4432887 | De-emulsification agents of microbiological origin There is provided a process for breaking or at least destabilizing oil-in-water emulsions and water-in-oil emulsions, which comprises adding to the emulsion a broth or portion of a broth resulting from the culture therein of specifically selected bacteria... | 02/21/1984 |
| 4404363 | Separation of diphasic mixtures containing aromatic polyesters Diphasic mixtures obtained from the synthesis of aromatic polyesters by the diphasic interface process may be separated into an aqueous phase and an organic phase by the addition of selected compounds.... | 09/13/1983 |
| 4401584 | Solvent based dewatering system with demulsifier Surfactant-modified, 1,1,2-trichloro-1,2,2-trifluoroethane solvent compositions are provided which contain small but effective amounts, i.e., about 0.2 to about 0.5 weight percent of solvent soluble/water insoluble surfactant and/or surfactant demulsifier... | 08/30/1983 |
| 4237005 | Method of breaking oil-in-water emulsions The use as oil-in-water emulsion breakers of phosphonic acid ester condensate oligomers is disclosed which oligomers are ester condensates of alkyl-1-hydroxy-1, 1-diphosphonic acid having the formula: ##STR1## where R1 and R2 ea... | 12/02/1980 |
| 4190615 | Oligomeric ester chain condensates of substituted 1-hydroxy-1,1-diphosphonic acid Phosphonic acid ester condensate oligomers are disclosed which are oligomeric ester condensates of alkyl-1-hydroxy-1,1-diphosphonic acid having the formula: ##STR1## where R1 and R2 each represent a group having the formula ... | 02/26/1980 |
