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Class Information
Number: 166/308.2
Name: Wells > Processes > Placing fluid into the formation > Fracturing (epo) > Using a chemical (epo)
Description: Process wherein the substance used to create the fissure has a specified molecular composition.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7621335 |
Viscosity breaker for polyacrylamide friction reducers |
Nov. 24, 2009 |
| 7608567 |
Degradable surfactants and methods for use |
Oct. 27, 2009 |
| 7591313 |
Methods of treating particulates and use in subterranean formations |
Sep. 22, 2009 |
| 7588085 |
Method to improve the injectivity of fluids and gases using hydraulic fracturing |
Sep. 15, 2009 |
| 7581594 |
Surfactant method for improved oil recovery from fractured reservoirs |
Sep. 1, 2009 |
| 7579302 |
Friction reducer performance by complexing multivalent ions in water |
Aug. 25, 2009 |
| 7578968 |
Microbiological control in oil or gas field operations |
Aug. 25, 2009 |
| 7575057 |
Polymeric gel system and use in hydrocarbon recovery |
Aug. 18, 2009 |
| 7571767 |
High porosity fractures and methods of creating high porosity fractures |
Aug. 11, 2009 |
| 7569523 |
Method and materials for hydraulic fracturing of wells using a liquid degradable thermoplastic polymer |
Aug. 4, 2009 |
| 7568525 |
Method and system for increasing well rate using well-capital-string perforation |
Aug. 4, 2009 |
| 7562711 |
Hydraulic injection of biocide into tanks |
Jul. 21, 2009 |
| 7543646 |
Suspension of concentrated particulate additives containing oil for fracturing and other fluids |
Jun. 9, 2009 |
| 7543644 |
Concentrated suspension of particulate additives for fracturing and other fluids |
Jun. 9, 2009 |
| 7541318 |
On-the-fly preparation of proppant and its use in subterranean operations |
Jun. 2, 2009 |
| 7533725 |
Method and system for altering pore pressure in a fracturing operation |
May. 19, 2009 |
| 7530393 |
Friction loss reduction in viscoelastic surfactant fracturing fluids using low molecular weight water-soluble polymers |
May. 12, 2009 |
| 7531483 |
Energized fluids and methods of use thereof |
May. 12, 2009 |
| 7521400 |
Gelled oil with surfactant |
Apr. 21, 2009 |
| 7510009 |
Method of acidizing a subterranean formation with diverting foam or fluid |
Mar. 31, 2009 |
| 7507693 |
Viscoelastic surfactant fluid systems comprising an aromatic sulfonate and methods of using same |
Mar. 24, 2009 |
| 7500517 |
Kerogen extraction from subterranean oil shale resources |
Mar. 10, 2009 |
| 7500519 |
Methods of modifying fracture faces and other surfaces in subterranean formations |
Mar. 10, 2009 |
| 7500522 |
Fluid with asphaltene control |
Mar. 10, 2009 |
| 7493955 |
Well treating compositions for slow release of treatment agents and methods of using the same |
Feb. 24, 2009 |
| 7481276 |
Method of inhibiting and/or preventing corrosion in oilfield treatment applications |
Jan. 27, 2009 |
| 7476644 |
Method and materials for hydaulic fracturing of wells |
Jan. 13, 2009 |
| 7455112 |
Methods and compositions relating to the control of the rates of acid-generating compounds in acidizing operations |
Nov. 25, 2008 |
| 7431087 |
Internal breaker for oilfield fluids |
Oct. 7, 2008 |
| 7426961 |
Method of treating subterranean formations with porous particulate materials |
Sep. 23, 2008 |
| 7416022 |
In-situ method of producing oil shale, on-shore and off-shore |
Aug. 26, 2008 |
| 7413013 |
Surfactant-based fluid loss control agents for surfactant gels and associated fluids and methods |
Aug. 19, 2008 |
| 7410934 |
Aqueous viscoelastic fluid |
Aug. 12, 2008 |
| 7401649 |
Methods for controlling particulate migration |
Jul. 22, 2008 |
| 7398826 |
Well treatment with dissolvable polymer |
Jul. 15, 2008 |
| 7399732 |
Fracturing fluid containing amphoteric glycinate surfactant |
Jul. 15, 2008 |
| 7398824 |
Method for inhibiting or controlling inorganic scale formations with copolymers of acrylamide and quaternary ammonium salts |
Jul. 15, 2008 |
| 7387987 |
Rheology modifiers |
Jun. 17, 2008 |
| 7387985 |
Monovalent cation-containing well fluids |
Jun. 17, 2008 |
| 7380600 |
Degradable material assisted diversion or isolation |
Jun. 3, 2008 |
| 7380601 |
Degradable fiber systems for stimulation |
Jun. 3, 2008 |
| 7378378 |
Rheology enhancers |
May. 27, 2008 |
| 7358215 |
Quaternary ammonium salts as thickening agents for aqueous systems |
Apr. 15, 2008 |
| 7343976 |
Methods of treating subterranean formations using derivatized gelling agents |
Mar. 18, 2008 |
| 7343972 |
System stabilizers and performance enhancers for aqueous fluids gelled with viscoelastic surfactants |
Mar. 18, 2008 |
| 7341107 |
Viscoelastic acid |
Mar. 11, 2008 |
| 7341980 |
Viscoelastic surfactant rheology modification |
Mar. 11, 2008 |
| 7334640 |
Methods for reducing the viscosity of treatment fluids |
Feb. 26, 2008 |
| 7311146 |
Subterranean treatment fluids, friction reducing copolymers, and associated methods |
Dec. 25, 2007 |
| 7308939 |
Methods of using polymer-coated particulates |
Dec. 18, 2007 |
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