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Class Information
Number: 507/101
Name: Earth boring, well treating, and oil field chemistry > Earth boring > Contains enzyme or living microorganism
Description: Composition comprising an enzyme or a microorganism which is living when injected into the wellbore.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7325603 |
Methods of well treatment |
Feb. 5, 2008 |
| 7094736 |
Sampling of hydrocarbons from geological formations |
Aug. 22, 2006 |
| 7052901 |
Bacteria-based and enzyme-based mechanisms and products for viscosity reduction breaking of viscoelastic fluids |
May. 30, 2006 |
| 6818594 |
Method for the triggered release of polymer-degrading agents for oil field use |
Nov. 16, 2004 |
| 6794340 |
Method for removing drill cuttings from wellbores and drilling fluids |
Sep. 21, 2004 |
| 6638896 |
Fluids and techniques for hydrocarbon well completion |
Oct. 28, 2003 |
| 6140277 |
Fluids and techniques for hydrocarbon well completion |
Oct. 31, 2000 |
| 6110875 |
Methods and materials for degrading xanthan |
Aug. 29, 2000 |
| 5951910 |
Reticulated bacterial cellulose as a rheological modifier for polyol fluid compositions |
Sep. 14, 1999 |
| 5612293 |
Drill-in fluids and drilling methods |
Mar. 18, 1997 |
| 4894335 |
Oil-in-water emulsions containing heteropolysaccharide biopolymers |
Jan. 16, 1990 |
| 4172055 |
Mixture of hydroxypropylcellulose and poly(maleic anhydride/alkene-1) as a hydrocolloid gelling agent |
Oct. 23, 1979 |
| 4169818 |
Mixture of hydroxypropylcellulose and poly(maleic anhydride/alkyl vinyl ether) as a hydrocolloid gelling agent |
Oct. 2, 1979 |
| 4002204 |
Timing the deposition of an asphalt plugging material from an asphalt-cationic emulsion |
Jan. 11, 1977 |
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