Use of breaker chemicals in gelled hydrocarbons
April 14, 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 References 3163219 Breaking of gelled organic liquids Dry blending of neutralized sulfonated elastomeric powders Bulk sulfonation process Drilling mud viscosification agents based on sulfonated ionomers Method for treating subterranean formations Method for treating subterranean formations Encapsulated breaker chemical Encapsulated breaker chemical with a multi-coat layer urea Breaker chemical encapsulated with a crosslinked elastomer coating InventorsApplicationNo. 839503 filed on 04/14/1997US Classes:507/238, Organic component is a phosphate ester166/300, Chemical inter-reaction of two or more introduced materials (e.g., selective plugging or surfactant)166/308.4, Oil based composition (EPO)507/221, Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.)507/227, Sulfur is attached directly or indirectly to the ethylenic monomer by nonionic bonding507/228, Monomer contains benzene ring and sulfonate group507/231, Carbocyclic ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding (e.g., styrene, vinyl toluene, etc.)507/244, Oxygen is attached directly or indirectly to carbon by nonionic bonding507/269, Contains inorganic component other than water or clay507/921, SPECIFIED BREAKER COMPONENT FOR EMULSION OR GEL507/922FRACTURE FLUIDExaminersPrimary: Tucker, PhilipAttorney, Agent or FirmInternational ClassesC09K 003/00E21B 043/27 AbstractOil degradable encapsulated breaker particles are used in fracturing operations to break hydro-carbon liquid gelled with salts of alkyl phosphate esters. The preferred breaker chemical is particulate urea coated with sulfonated EPDM.Field of SearchSPECIFIED BREAKER COMPONENT FOR EMULSION OR GELOrganic component is a phosphate ester Sulfur is attached directly or indirectly to the ethylenic monomer by nonionic bonding Monomer contains benzene ring and sulfonate group FRACTURE FLUID Resin is polymer derived from ethylenic monomers only (e.g., maleic, itaconic, etc.) Carbocyclic ring is attached directly or indirectly to the ethylenic monomer by nonionic bonding (e.g., styrene, vinyl toluene, etc.) Oxygen is attached directly or indirectly to carbon by nonionic bonding Contains inorganic component other than water or clay Chemical inter-reaction of two or more introduced materials (e.g., selective plugging or surfactant) |
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