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Class Information
Number: 507/114
Name: Earth boring, well treating, and oil field chemistry > Earth boring > Contains organic component > Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, xanthan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons > Carbohydrate is cellulose or derivative thereof > Hydroxyalkylcellulose (e.g., hec, etc.)
Description: Composition wherein said cellulose derivative is a hydroxyalkyl ether cellulose (e.g., hydroxyethylcellulose (HEC), etc.).
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7622427 |
Ethoxylated raw cotton linters for completion and workover fluids |
Nov. 24, 2009 |
| 7612021 |
Methods and compositions utilizing lost-circulation materials comprising composite particulates |
Nov. 3, 2009 |
| 7553800 |
In-situ filter cake degradation compositions and methods of use in subterranean formations |
Jun. 30, 2009 |
| 7393407 |
Silicon oxide slurry and method for producing such slurry |
Jul. 1, 2008 |
| 7384892 |
Water-based drilling fluids |
Jun. 10, 2008 |
| 7304019 |
Concentrated suspensions |
Dec. 4, 2007 |
| 7199084 |
Concentrated suspensions |
Apr. 3, 2007 |
| 7199083 |
Self-generating foamed drilling fluids |
Apr. 3, 2007 |
| 7152697 |
Delayed phase changing agent for invert emulsion drilling fluid |
Dec. 26, 2006 |
| 7147067 |
Zeolite-containing drilling fluids |
Dec. 12, 2006 |
| 7087556 |
Compositions for treating subterranean zones penetrated by well bores |
Aug. 8, 2006 |
| 6884760 |
Water based wellbore fluids |
Apr. 26, 2005 |
| 6818597 |
Suspensions of water soluble polymers in surfactant free non-aqueous solvents |
Nov. 16, 2004 |
| 6818598 |
Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zone |
Nov. 16, 2004 |
| 6814145 |
Shear-sensitive plugging fluid for plugging and a method for plugging a subterranean formation zone |
Nov. 9, 2004 |
| 6800593 |
Hydrophilic polymer concentrates |
Oct. 5, 2004 |
| 6794340 |
Method for removing drill cuttings from wellbores and drilling fluids |
Sep. 21, 2004 |
| 6784140 |
Thermally stable, substantially water-free well fluid |
Aug. 31, 2004 |
| 6774089 |
Water-based drilling fluid additive containing talc and cellulose |
Aug. 10, 2004 |
| 6770601 |
Aphron-containing aqueous well drilling and servicing fluids |
Aug. 3, 2004 |
| 6737385 |
Well drilling and servicing fluids and methods of removing filter cake deposited thereby |
May. 18, 2004 |
| 6737384 |
Drilling fluid additive system containing talc and cellulose |
May. 18, 2004 |
| 6730636 |
Environmentally acceptable well cement fluid loss control additives, compositions and methods |
May. 4, 2004 |
| 6620769 |
Environmentally acceptable fluid polymer suspension for oil field services |
Sep. 16, 2003 |
| 6586587 |
Ligand-modified cellulose products |
Jul. 1, 2003 |
| 6492305 |
Method of controlling loss of a subterranean treatment fluid |
Dec. 10, 2002 |
| 6451743 |
Stable liquid suspension compositions and method of making and use thereof |
Sep. 17, 2002 |
| 6342467 |
Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations |
Jan. 29, 2002 |
| 6309455 |
Stable suspension of hydrocolloids and superplasticizer |
Oct. 30, 2001 |
| 6281172 |
Quaternary nitrogen containing amphoteric water soluble polymers and their use in drilling fluids |
Aug. 28, 2001 |
| 6258756 |
Salt water drilling mud and method |
Jul. 10, 2001 |
| 6221152 |
Stable suspension of hydrocolloids |
Apr. 24, 2001 |
| 6180571 |
Fluid loss control additives and subterranean treatment fluids containing the same |
Jan. 30, 2001 |
| 6106603 |
Stable suspension of hydrocolloids and superplasticizer |
Aug. 22, 2000 |
| 6100222 |
High density, viscosified, aqueous compositions having superior stability under stress conditions |
Aug. 8, 2000 |
| 6054416 |
Drilling fluids comprising biodegradable heteropolyglycols |
Apr. 25, 2000 |
| 5981447 |
Method and composition for controlling fluid loss in high permeability hydrocarbon bearing formations |
Nov. 9, 1999 |
| 5858928 |
Gel of an apolar medium, its use for the preparation of water-based drilling fluids |
Jan. 12, 1999 |
| 5849674 |
Compositions and processes for oil field applications |
Dec. 15, 1998 |
| 5808052 |
Use of cellulose mixed ethers as additives for earth pressure shields |
Sep. 15, 1998 |
| 5785747 |
Viscosification of high density brines |
Jul. 28, 1998 |
| 5744428 |
Process using gellan as a filtrate reducer for water-based drilling fluids |
Apr. 28, 1998 |
| 5710108 |
Biopolymer/oil suspension compositions utilized in aqueous-based fluids used in the oil service industry including completion and drilling fluids |
Jan. 20, 1998 |
| 5710109 |
Method for acidizing formation having high permeability water zones |
Jan. 20, 1998 |
| 5680900 |
Method for enhancing fluid loss control in subterranean formation |
Oct. 28, 1997 |
| 5669456 |
Process and water-base fluid utilizing hydrophobically modified cellulose derivatives as filtrate reducers |
Sep. 23, 1997 |
| 5641728 |
Control of the fluid loss of well drilling and servicing fluids |
Jun. 24, 1997 |
| 5576271 |
Composition and process for stabilizing viscosity or controlling water loss of polymer-containing water based fluids |
Nov. 19, 1996 |
| 5514644 |
Polysaccharide containing fluids having enhanced thermal stability |
May. 7, 1996 |
| 5439057 |
Method for controlling fluid loss in high permeability formations |
Aug. 8, 1995 |
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