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Patent applications and USPTO patent grants for Debruijn; Gunnar.The latest application filed is for "compositions and metods for cleaning a wellbore prior to cementing".
Patent | Date |
---|---|
Compositions and methods for cleaning a wellbore prior to cementing Grant 8,517,100 - Ali , et al. August 27, 2 | 2013-08-27 |
Compositions And Metods For Cleaning A Wellbore Prior To Cementing App 20110278004 - Ali; Syed A. ;   et al. | 2011-11-17 |
Well Repair Using Swellable Material in a Remedial Matrix App 20110056690 - Debruijn; Gunnar | 2011-03-10 |
Carbonaceous extenders for flexible cement Grant 7,836,953 - Debruijn , et al. November 23, 2 | 2010-11-23 |
Carbonaceous Extenders For Flexible Cement App 20090250219 - Debruijn; Gunnar ;   et al. | 2009-10-08 |
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