CLEANING COMPOSITIONS FOR OIL-GAS WELLS, WELL LINES, CASINGS, EQUIPMENT, STORAGE TANKS, ETC., AND METHOD OF USE
(19)AUSTRALIAN PATENT OFFICE (54) Title CLEANING COMPOSITIONS FOR OIL-GAS WELLS, WELL LINES, CASINGS, EQUIPMENT,STORAGE TANKS, b 1 C, AND METHOD OF USE (51)6 International Patent Classification(s) CI ID 007/50 (21) Application No: 2003282973(22) Application Date: 2003.10.21 (87) WIPONo: WOCM/037965 (30) Priority Data (31) Number (32) Date (33) Country60/419,913 2002.10.21US60/449,223 2003.02.20US (43) Publication Date : 2004.05.13 (43) Publication Journal Date : 2004.06.17 (71) Applicant(s)UNITED ENERGY CORPORATION (72) Inventor(s) CIOLEI II, Kenneth, R.; MANIAR,Prakash, N.; WILEN, Ronald (H) Application NoAU2003282973 A1(19)AUSTRALIAN PATENT OFFICE (54) Title CLEANING COMPOSITIONS FOR OIL-GAS WELLS, WELL LINES, CASINGS, EQUIPMENT,STORAGE TANKS, b 1 C, AND METHOD OF USE (51)6 International Patent Classification(s) CI ID 007/50 (21) Application No: 2003282973(22) Application Date: 2003.10.21 (87) WIPONo: WOCM/037965 (30) Priority Data (31) Number (32) Date (33) Country60/419,913 2002.10.21US60/449,223 2003.02.20US (43) Publication Date : 2004.05.13 (43) Publication Journal Date : 2004.06.17 (71) Applicant(s)UNITED ENERGY CORPORATION (72) Inventor(s) CIOLEI II, Kenneth, R.; MANIAR,Prakash, N.; WILEN, Ronald The invention relates to a high flash point aromatic, aliphatic hydrocarbon petroleum solvents optionally combined with specific ingredients to provide maximum solvency, penetration, saturation, dissipation and dispersion of the solid deposits. It has very low evaporation, high flash point (>100 DEG F.), low freezing pour point, corrosion protection and increased cleaning efficiency. WHAT IS CLAIMED IS 1. A composition for removing paraffin, heavy asphaltenes, oils, and other soils from oil wells and oil processing equipment comprising about 1 to 50% of a Clo-C15 naphthalene depleted aromatic solvent blend containing less than 1% Naphthalene and less than 50ppm toluene with a flash point about 100 and up to 10-50% of other additives.
2. A composition according to claim 1 wherein the additives comprise a fatty acid alkyl ester blend.
3. A composition according to claim 1 further comprising up to 20% or lower alkyl glycol ethers.
4. A composition according to claim 3 where in the lower alkyl glycol ether is dipropylene glycol n-butyl ether, dipropylene glycol monomethyl ether, tripropylene glycol monomethyl ether, propylene glycol no-butyl ether or mixture thereof.
5. A composition according to claim 1 further comprising up to 20 weight% of at least one additive selected from the group consisting of terpenes, terpene alcohols, C8-Cz4 alcohol acetate ester blends, glycols, diacid esters and n-methyl 2 pyrolidone.
6. A composition according to claim 1 further comprising up to 10% of a surfactants.
7. A composition according to claim 6 where in the surfactant is selected from the group of ethoxylated nonylphenols, linear alcohol ethoxylate and alkynolamine salts of dodecyl benzene sulfonic acid.
8. A composition according to claim 1 wherein the additives from the following categories are included to aid in longevity and performance, the additives include but are not limited to chelating agents such as EDTA coupling agents such as sodium xylene sulfonate, corrosion inhibitors such as methyl benzothiazole, antioxidants such as butylated hydroxyl toluene.
9. A composition according to any of claims 1 to 8 further comprising a polymeric film former, such as, OFR-2. <Desc/Clms Page number 18> 10. A composition according to any one of claims 1 to 9 wherein the aromatic solvent blend has a flashpoint above 150 F.
11. A composition according to anyone of claims 1 to 9 wherein the aromatic solvent blend has a flash point above 200 F.
12. A method for removing and preventing the buildup of paraffin, tars, heavy oil, calcium carbonate, iron oxide'and other soils and scales, from gas or oil wells, hydrocarbon bearing formations, or recovery, pumping, storage, or transmission equipment, comprising introducing into said well, formation, or equipment a composition according to any one of claim 1 to 11.
13. A method for removing and preventing deposits from gas or oil wells, hydrocarbon bearing formations, or recovery, pumping, storage, or transmission equipment, comprising introducing into said well, formation, or equipment a composition according to any one claims 1 to 11.