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Class Information
Number: 507/902
Name: Earth boring, well treating, and oil field chemistry > Controlled release agent
Description: Subject matter wherein the composition contains a controlled release agent.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7493955 |
Well treating compositions for slow release of treatment agents and methods of using the same |
Feb. 24, 2009 |
| 7473672 |
Well treatment process |
Jan. 6, 2009 |
| 7441599 |
Controlling the pressure within an annular volume of a wellbore |
Oct. 28, 2008 |
| 7395863 |
Method of treating a subterranean formation with an oil-based composition containing a polysaccharide-based water-superabsorbent material |
Jul. 8, 2008 |
| 7360593 |
Product for coating wellbore screens |
Apr. 22, 2008 |
| 7354886 |
Pumpable multiple phase compositions for controlled release applications downhole |
Apr. 8, 2008 |
| 7314850 |
Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids |
Jan. 1, 2008 |
| 7306035 |
Process for treating a formation |
Dec. 11, 2007 |
| 7290614 |
Methods for effecting controlled break in pH dependent foamed fracturing fluid |
Nov. 6, 2007 |
| 7244693 |
Well treatment |
Jul. 17, 2007 |
| 7219731 |
Degradable additive for viscoelastic surfactant based fluid systems |
May. 22, 2007 |
| 7196040 |
Microcapsule well treatment |
Mar. 27, 2007 |
| 7135440 |
Method for controlled placement of oilfield chemicals and composition useful for practicing same |
Nov. 14, 2006 |
| 7049272 |
Downhole chemical delivery system for oil and gas wells |
May. 23, 2006 |
| 7036587 |
Methods of diverting treating fluids in subterranean zones and degradable diverting materials |
May. 2, 2006 |
| 7021378 |
Method for enhancing the retention efficiency of treatment chemicals in subterranean formations |
Apr. 4, 2006 |
| 7000701 |
Compositions and methods for weighting a breaker coating for uniform distribution in a particulate pack |
Feb. 21, 2006 |
| 6861394 |
Internal breaker |
Mar. 1, 2005 |
| 6831044 |
Product for coating wellbore screens |
Dec. 14, 2004 |
| 6818594 |
Method for the triggered release of polymer-degrading agents for oil field use |
Nov. 16, 2004 |
| 6803347 |
Additive for wellbore fluids |
Oct. 12, 2004 |
| 6794340 |
Method for removing drill cuttings from wellbores and drilling fluids |
Sep. 21, 2004 |
| 6777377 |
Composition for use in sealing a porous subterranean formation, and methods of making and using |
Aug. 17, 2004 |
| 6767867 |
Methods of treating subterranean zones penetrated by well bores |
Jul. 27, 2004 |
| 6767868 |
Breaker system for fracturing fluids used in fracturing oil bearing formations |
Jul. 27, 2004 |
| 6764980 |
Coated products and use thereof in oil fields |
Jul. 20, 2004 |
| 6723683 |
Compositions for controlled release |
Apr. 20, 2004 |
| 6722434 |
Methods of generating gas in well treating fluids |
Apr. 20, 2004 |
| 6702022 |
Method and device to reduce asphaltene and paraffin accumulations in wells |
Mar. 9, 2004 |
| 6613720 |
Delayed blending of additives in well treatment fluids |
Sep. 2, 2003 |
| 6581687 |
Water-in-oil microemulsions useful for oil field or gas field applications and methods for using the same |
Jun. 24, 2003 |
| 6554071 |
Encapsulated chemicals for use in controlled time release applications and methods |
Apr. 29, 2003 |
| 6544934 |
Methods and compositions for treating subterranean formations with gelled hydrocarbon fluids |
Apr. 8, 2003 |
| 6464009 |
Pumpable multiple phase compositions for controlled release applications downhole |
Oct. 15, 2002 |
| 6454004 |
Cementing casing strings in deep water offshore wells |
Sep. 24, 2002 |
| 6444316 |
Encapsulated chemicals for use in controlled time release applications and methods |
Sep. 3, 2002 |
| 6380136 |
Coated products and use thereof in oil fields |
Apr. 30, 2002 |
| 6357527 |
Encapsulated breakers and method for use in treating subterranean formations |
Mar. 19, 2002 |
| 6326335 |
Microencapsulated oil field chemicals |
Dec. 4, 2001 |
| 6213214 |
Pipeline treatment composites |
Apr. 10, 2001 |
| 6209643 |
Method of controlling particulate flowback in subterranean wells and introducing treatment chemicals |
Apr. 3, 2001 |
| 6206103 |
Pipeline treatment composites |
Mar. 27, 2001 |
| 6207620 |
Use of encapsulated acid in acid fracturing treatments |
Mar. 27, 2001 |
| 6187720 |
Delayed release breakers in gelled hydrocarbons |
Feb. 13, 2001 |
| 6184184 |
Encapsulated breaker for oil gel system |
Feb. 6, 2001 |
| 6176315 |
Preventing flow through subterranean zones |
Jan. 23, 2001 |
| 6135207 |
Well treatment pellets |
Oct. 24, 2000 |
| 6024170 |
Methods of treating subterranean formation using borate cross-linking compositions |
Feb. 15, 2000 |
| 5964291 |
Well treatment |
Oct. 12, 1999 |
| 5922652 |
Microencapsulated oil field chemicals |
Jul. 13, 1999 |
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