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Class Information
Number: 507/933
Name: Earth boring, well treating, and oil field chemistry > Acidizing or formation destroying
Description: Subject matter wherein the well treating composition is intended to treat the geological formation of the well with acid or to destroy or dissolve the geological formation by chemical reaction.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7395863 |
Method of treating a subterranean formation with an oil-based composition containing a polysaccharide-based water-superabsorbent material |
Jul. 8, 2008 |
| 7318475 |
Matrix acidizing high permeability contrast formations |
Jan. 15, 2008 |
| 7303018 |
Method of acidizing a subterranean formation with diverting foam or fluid |
Dec. 4, 2007 |
| 7231976 |
Method of treating an oil or gas well with biodegradable low toxicity fluid system |
Jun. 19, 2007 |
| 7192908 |
Composition and method for treating a subterranean formation |
Mar. 20, 2007 |
| 7166560 |
Generating Acid Downhole in Acid Fracturing |
Jan. 23, 2007 |
| 7165613 |
Propped fracture with high effective surface area |
Jan. 23, 2007 |
| 7163056 |
Esterquat acidic subterranean treatment fluids and methods of using esterquats acidic subterranean treatment fluids |
Jan. 16, 2007 |
| 7148184 |
Self-diverting foamed system |
Dec. 12, 2006 |
| 7060661 |
Acid thickeners and uses thereof |
Jun. 13, 2006 |
| 6994166 |
Composition and method for diversion agents for acid stimulation of subterranean formations |
Feb. 7, 2006 |
| 6984610 |
Acid based micro-emulsions of surfactants and solvents |
Jan. 10, 2006 |
| 6924255 |
Composition and method for treating a subterranean formation |
Aug. 2, 2005 |
| 6855672 |
Copolymers useful for gelling acids |
Feb. 15, 2005 |
| 6849582 |
Method of oil/gas well stimulation |
Feb. 1, 2005 |
| 6806236 |
Composition and method for treating a subterranean formation |
Oct. 19, 2004 |
| 6706668 |
Electron transfer agents in well acidizing compositions and methods |
Mar. 16, 2004 |
| 6667280 |
Fluid system having controllable reversible viscosity |
Dec. 23, 2003 |
| 6653260 |
Electron transfer system for well acidizing compositions and methods |
Nov. 25, 2003 |
| 6637517 |
Compositions containing aqueous viscosifying surfactants and methods for applying such compositions in subterranean formations |
Oct. 28, 2003 |
| 6613720 |
Delayed blending of additives in well treatment fluids |
Sep. 2, 2003 |
| 6593279 |
Acid based micro-emulsions |
Jul. 15, 2003 |
| 6555505 |
Foamed acidizing fluids, additives and methods of acidizing subterranean zones |
Apr. 29, 2003 |
| 6534448 |
Composition and method for acidizing wells and equipment without damaging precipitation |
Mar. 18, 2003 |
| 6531427 |
Reducing aluminum compound precipitation following subterranean formation acidizing |
Mar. 11, 2003 |
| 6506711 |
Reducing aluminum compound precipitation during subterranean formation acidizing |
Jan. 14, 2003 |
| 6415865 |
Electron transfer agents in well acidizing compositions and methods |
Jul. 9, 2002 |
| 6399546 |
Fluid system having controllable reversible viscosity |
Jun. 4, 2002 |
| 6350721 |
Fluids and techniques for matrix acidizing |
Feb. 26, 2002 |
| 6308778 |
Compositions and methods of catalyzing the rate of iron reduction during acid treatment of wells |
Oct. 30, 2001 |
| 6306800 |
Methods of fracturing subterranean formations |
Oct. 23, 2001 |
| 6207620 |
Use of encapsulated acid in acid fracturing treatments |
Mar. 27, 2001 |
| 6060435 |
Solubilized and regenerating iron reducing additive |
May. 9, 2000 |
| 5977032 |
Acidic surfactant composition and method for cleaning wellbore and flowline surfaces using the surfactant composition |
Nov. 2, 1999 |
| 5909774 |
Synthetic oil-water emulsion drill-in fluid cleanup methods |
Jun. 8, 1999 |
| 5905061 |
Invert emulsion fluids suitable for drilling |
May. 18, 1999 |
| 5902515 |
Solutions and methods for inhibiting corrosion |
May. 11, 1999 |
| 5830831 |
Surfactant blends for well operations |
Nov. 3, 1998 |
| 5797456 |
Surfactant additive for oil field acidizing |
Aug. 25, 1998 |
| 5783526 |
Process to enhance removal of adhering solids from the surface of wellbores and sand control devices therein |
Jul. 21, 1998 |
| 5756004 |
Quaternary ammonium compounds useful for inhibiting metal corrosion |
May. 26, 1998 |
| 5674817 |
Controlling iron in aqueous well fracturing fluids |
Oct. 7, 1997 |
| 5622921 |
Anionic compositions for sludge prevention and control during acid stimulation of hydrocarbon wells |
Apr. 22, 1997 |
| 5599777 |
Methods of using acidizing fluids in wells, and compositions used therein |
Feb. 4, 1997 |
| 5547926 |
New compositions for iron control in acid treatments for oil wells |
Aug. 20, 1996 |
| 5543387 |
Surfactant additive for oilfield acidizing |
Aug. 6, 1996 |
| 5543388 |
Intensified corrosion inhibitor and method of use |
Aug. 6, 1996 |
| 5529125 |
Acid treatment method for siliceous formations |
Jun. 25, 1996 |
| 5433272 |
Methods for treating a permeable matrix |
Jul. 18, 1995 |
| 5358052 |
Conditioning of formation for sandstone acidizing |
Oct. 25, 1994 |
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