US Patent 7605112 Shale inhibition
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Patent abstract
A method of shale inhibition comprises adding a two-phase polymer system of a water soluble copolymer of vinyl pyrrolidone and dimethylaminopropyl methacrylamide and in-situ formed water-insoluble particles of said copolymer, or, alternatively, a water-soluble copolymer of methylvinyl ether and maleic anhydride, into a drilling well fluid under aqueous, high temperature, high salinity conditions.
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US Patent 07605112 Shale inhibition US Patent 7605112 Shale inhibition
Infobox
Patent Number
0760511200
Patent Number
760511200
Edits on 30 Mar, 2023
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Infobox
Is a
Patent Jurisdiction
Patent Number
076051120
Date of Patent
October 20, 2009
0Patent Application Number
112667870
Date Filed
November 4, 2005
0Official Website
Patent Primary Examiner
Edits on 26 Sep, 2022
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Infobox
Is a
Patent Jurisdiction
Patent Number
076051120
Date of Patent
October 20, 2009
0Patent Application Number
112667870
Date Filed
November 4, 2005
0Official Website
Patent Primary Examiner
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US Patent 07605112 Shale inhibition
Infobox
Is a
Patent jurisdiction
Patent number
07605112
Date of patent
October 20, 2009
Patent application number
11266787
Date Filed
November 4, 2005
Patent primary examiner
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