Method for inhibiting or retarding hydrate formation, growth and/or agglomeration
Patent 5789635 Issued on August 4, 1998. Estimated Expiration Date: 
February 6, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 6, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAdditives and method for controlling clathrate hydrates in fluid systems Patent #: 5639925 InventorsAssigneeApplicationNo. 796133 filed on 02/06/1997US Classes:585/15, HYDRATE OR PRODUCTION THEREOF95/153, Hydrate inhibitor137/3, Mixing of plural fluids of diverse characteristics or conditions137/15.01, Cleaning, repairing, or assembling166/310, Entraining or incorporating treating material in flowing earth fluid166/371, Including non-expulsive material placed in well208/48AA, Antifoulant additive585/5, Additive(s) aromatic585/950Prevention or removal of corrosion or solid depositsExaminersPrimary: Wood, Elizabeth D.Attorney, Agent or FirmForeign Patent References
International ClassesC07C 007/20C10G 009/16 Foreign Application Priority Data1996-02-07 FRAbstractThe invention concerns a process for inhibiting or retarding hydrate formation, growth and/or agglomeration in a fluid comprising water and gases, by addition of a hydrosoluble copolymer which does not contain a heterocycle but contains at least one sulphonate group.The copolymer is generally introduced at a concentration of 0.05% to 5% by weight with respect to the quantity of water in the medium.The copolymer can also be mixed with an alcohol (monoalcohol or polyol). In this case, the proportions are generally 0.5% to 20% by weight of alcohol with respect to the water content, for 0.05% to 3% by weight of copolymer with respect to the quantity of water content of the medium.Field of SearchAdditive(s) aromaticHYDRATE OR PRODUCTION THEREOF Prevention or removal of corrosion or solid deposits Mixing of plural fluids of diverse characteristics or conditions Entraining or incorporating treating material in flowing earth fluid Including non-expulsive material placed in well Hydrate inhibitor Antifoulant additive |
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