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Class 507/112 - Carbohydrate is cellulose or derivative thereof


Subclass of Class 507 - Earth boring, well treating, and oil field chemistry
Definition: Composition wherein said carbohydrate is cellulose or a
No. of patents: 85
Last issue date: 03/20/2012


1      
NumberTitleIssue Date
8138124Drilling fluid with circulation loss reducing additive package
A drilling fluid includes a base fluid and a circulation loss reducing additive package having a polysaccharide, a cellulose derivative and a pH controlling component. ...
03/20/2012
7749941Method and composition for improving performance of aqueous and polymer based fluids at high temperatures
The invention provides aqueous based well drilling and servicing fluids containing a polymer viscosifier with enhanced thermal stability provided by a diacid or diacid salt preferably having about two to about eight carbon atoms, such as, for example, sodium oxalate...
07/06/2010
7427582Internal breaker
A wellbore fluid including a peroxide degradable polymer and an encapsulated peroxide source. The peroxide degradable polymer may be a polysaccharide. The peroxide source may include an inorganic peroxide, including zinc and alkaline earth metal peroxides, such as m...
09/23/2008
7393407Silicon oxide slurry and method for producing such slurry
The present invention relates to a slurry containing water, amorphous silica panicles having a particle size less than 1 micron and silica flour with a particle size between 2-200 microns. In order to stablize the slurry, the slurry contains a polysaccharide. The in...
07/01/2008
7384892Water-based drilling fluids
A water-based drilling fluid composition includes water and at least one rheology modifier and/or fluid loss control agent, and at least one other ingredient of polymeric additive, inorganic salts, dispersants, shale stabilizers, weighting agents, or finely divided ...
06/10/2008
7323434Electropositive production well treating fluid and method of preparing the same
An electropositive and water-based production well treating fluid system exhibits electropositivity by using a cationic viscosifier meanwhile matched with a cationic fluid loss additive and, optionally, contains a mud-building agent, an electrical stabilizing agent,...
01/29/2008
7304019Concentrated suspensions
Suspensions are provided of water-soluble materials in non-aqueous carrier fluids using suspension agents that include organophilic clays. Methods of forming such suspensions are provided. Methods are also provided for using such suspensions to prepare aqueous solut...
12/04/2007
7284611Methods and compositions for controlling lost circulation in subterranean operations
A lost circulation composition, that comprises a first portion of particles having a weight mean particle size of less than about 20 microns, a second portion of particles having a weight mean particle size in the range of from about 25 microns to about 400 microns,...
10/23/2007
7268101Formate based liquid gel concentrates
A liquid gel concentrate for forming a high viscosity treating fluid is provided which can be premixed and stored before being used. The concentrate is comprised of an aqueous formate solution, at least one hydratable polymer which yields viscosity upon hydration an...
09/11/2007
7238733Storable water-silica suspensions and methods
Storable water-silica suspensions and methods of cementing well bores are provided. The storable water-silica suspensions are basically comprised of water, silica and an effective amount of a suspending agent selected from the group consisting of colloidal materials...
07/03/2007
7214647Method of increasing the low shear rate viscosity of well drilling and servicing fluids containing calcined magnesia bridging solids, the fluids and methods of use
The invention provides well drilling and servicing fluids, and methods of drilling, completing, or working over a well therewith, preferred fluids comprise an aqueous liquid, a water soluble polymer viscosifier (preferably xanthan gum), a polymeric fluid loss contro...
05/08/2007
7211546Method of increasing the low shear rate viscosity of well drilling and servicing fluids containing calcined magnesia bridging solids, the fluids and methods of use
The invention provides well drilling and servicing fluids, and methods of drilling, completing, or working over a well therewith, preferred fluids comprise an aqueous liquid, a water soluble polymer viscosifier (preferably xanthan gum), a polymeric fluid loss contro...
05/01/2007
7199084Concentrated suspensions
Suspensions are provided of water-soluble materials in non-aqueous carrier fluids using suspension agents that include thixotropic agents and, optionally, organophilic clays. Methods of forming such suspensions are provided. Methods are also provided for using such ...
04/03/2007
7199083Self-generating foamed drilling fluids
Self-generating foamed fluids for circulation through a well during drilling operations and methods for circulating such self-generating foamed drilling fluids are provided for. The drilling fluid comprises an aqueous solvent, a polymer, a surfactant, a first foam g...
04/03/2007
7196040Microcapsule well treatment
A material and a device for releasing chemicals in a fluid environment is disclosed, and a method for releasing substances into downhole fluid environments. The invention also relates to materials for sand control and hydraulic fracturing. The substance release devi...
03/27/2007
7135440Method for controlled placement of oilfield chemicals and composition useful for practicing same
Disclosed is a method for introducing additives into an oil, gas, or water injection well or pipeline in solid form at a location other than at the bottom. The method is practiced using pellets having a density sufficient to suspend the pellet at a top phase, bottom...
11/14/2006
7131492Divinyl sulfone crosslinking agents and methods of use in subterranean applications
This invention relates to divinyl sulfone crosslinking agents, viscosified treatment fluids, and methods of using these compositions in applications wherein viscosified treatment fluids may be used. In one embodiment, this invention provides a method of treating a p...
11/07/2006
7067461Water-based drilling fluid additive containing graphite and carrier
A drilling fluid additive is provided wherein the additive is manufactured by a method comprised of admixing graphite with at least one carrier such as a polypropylene glycol or oil to create a suspended mixture, and allowing the surface of the graphite to be pre-we...
06/27/2006
7060660Drilling fluid additive system containing talc and graphite
A drilling fluid additive system is provided wherein the system comprises: a drilling fluid additive comprising talc, graphite and at least one carrier such as a glycol; and hydrophilic clay, a pH controller, a fluid loss controller, and at least one dispersant....
06/13/2006
7050166Calcium carbonate imaging technique
The invention concerns a method for determining the particle size distribution (PSD) of bridging agents in fluids, particularly aqueous fluids used in hydrocarbon recovery such as drilling fluids, drill-in fluids, completion fluids, and the like. It was discovered t...
05/23/2006
7018955Drilling fluid, apparatus, and method
Disclosed are drilling fluids that include carboxyalkylated corn hulls in an amount effective to inhibit fluid loss from a wellbore formation. The carboxyalkylated corn hulls are heat stable and surprisingly effective at inhibiting fluid loss. Also disclosed are a d...
03/28/2006
6908886Annular fluids and method of emplacing the same
An annular fluid or packer fluid, and methods of making the same, that includes a water-miscible solvent, a viscosifying additive, a crosslinking agent, a crosslinking inhibitor having the facility to inhibit crosslinking between the viscosifying additive and the cr...
06/21/2005
6902002Cement compositions comprising improved lost circulation materials and methods of use in subterranean formations
The present invention relates to subterranean cementing operations and, more particularly, to cement composition that include improved lost circulation materials, and methods of using such cement compositions in subterranean formations. In certain exemplary embodime...
06/07/2005
6884760Water based wellbore fluids
The invention relates to water based wellbore fluids used during a hydrocarbon recovery process, such as drilling, fracturing, gravel packing and wellbore workover. According to the present invention, said wellbore fluid comprises a fluid loss additive and a bridgin...
04/26/2005
6861392Compositions for restoring lost circulation
A method and composition is provided for sealing a subterranean zone penetrated by a well bore to restore lost circulation. In one embodiment, the composition comprises a pellet comprising a mixture of lost circulation materials (LCMs). ...
03/01/2005
6835697Method to significantly reduce mounding on the seafloor
A method to significantly reduce mounding on the seafloor near oil drilling operations comprising the steps of: mixing drilling fluids with organic contaminates in a high shear mixer; adding a solidification agent which expands when hydrated and electrolytically att...
12/28/2004
6825152Method for creating dense drilling fluid additive and composition therefor
A dense drilling fluid additive used to control lost circulation, fluid loss and/or seepage loss of drilling fluid during drilling operations is disclosed. Such additive is formed from ground base materials, such as inorganic matter, and may be used to manage the rh...
11/30/2004
6818597Suspensions of water soluble polymers in surfactant free non-aqueous solvents
Liquid water soluble polymer suspensions in non-aqueous solvents are extremely stable over long periods of time with minimum separation of the solvent and no hard packing of the dispersed water soluble polymer. The suspensions enable a user to rapidly add the suspen...
11/16/2004
6806231Drilling fluid, apparatus, and method
Disclosed are drilling fluids suitable for use in connection with oil well drilling. The drilling fluids of the invention include in one embodiment a liquid base, an alkyl glucoside, such as methyl glucoside, and a borehole stability agent that includes a maltodextr...
10/19/2004
6800593Hydrophilic polymer concentrates
Disclosed is a hydrophilic, water soluble polymer concentrate for addition to aqueous liquids to enhance the properties thereof, particularly to increase the viscosity or decrease the fluid loss of well drilling and servicing fluids, the concentrate comprising a hyd...
10/05/2004
6794340Method for removing drill cuttings from wellbores and drilling fluids
A method is disclosed for drilling a wellbore employing a drilling fluid providing the advantages of easy pumpability of a low viscosity fluid with the drill cuttings suspension capability of a highly viscous fluid. The viscosity of the fluid is also easily and quic...
09/21/2004
6784140Thermally stable, substantially water-free well fluid
A method of treating a well including injecting a thermally stable, substantially water-free well-treating fluid into the well, wherein the well-treating fluid comprises a polymer, a glycol compound, and a salt is disclosed. In another embodiment, a thermally stable...
08/31/2004
6774089Water-based drilling fluid additive containing talc and cellulose
A drilling fluid additive is provided wherein the additive is manufactured by a method comprised of admixing colloidal solids such as talc with a combination of oil and glycol or cellulose to create a suspended mixture to thereby allow the colloidal solids to be pre...
08/10/2004
6737384Drilling fluid additive system containing talc and cellulose
A drilling fluid additive system is provided wherein the system is manufactured by a method comprised of admixing colloidal solids such as talc with a carrier such as oils and glycols or talc with cellulose to create a suspended mixture to thereby allow the colloida...
05/18/2004
6620769Environmentally acceptable fluid polymer suspension for oil field services
This invention provides a water-free oil based fluid polymer suspension composition for use as a rheology modifier and fluid loss reducer in oil or gas well servicing fluids. It has been found that by using white medicinal oil as a carrier, high solids co...
09/16/2003
6586587Ligand-modified cellulose products
The invention relates to a ligand-modified cellulose product comprising cellulose ether, calcium salt and at least one ligand as a chelating agent. The product can be used e.g. in drilling fluids....
07/01/2003
6518223Drilling fluid, apparatus, and method
Disclosed are drilling fluids suitable for use in connection with oil well drilling. The drilling fluids of the invention include in one embodiment a liquid base, an alkyl glucoside, such as methyl glucoside, and a borehole stability agent that includes a...
02/11/2003
6495493Non-damaging drilling fluids
Water-based drilling fluid comprising: (a) water, (b) at least one biopolymer of the polysaccharide type, (c) at least one filtrate reducer selected from starches with different cross-linking degrees in presence of cellulose microfibers, (d) optionally a hydrosolub...
12/17/2002
6451743Stable liquid suspension compositions and method of making and use thereof
A new stable liquid suspension containing non-soluble particles dispersed in a non-aqueous liquid medium having a concentration of a suspension aid and a method of making and use thereof....
09/17/2002
6348436Fluid comprising cellulose nanofibrils and its use for oil mining
The present invention relates to a drilling fluid comprising cellulose nanofibrils comprising at least 80% of cells with primary walls and charged with carboxylic acids and with acidic polysaccharides, alone or as a mixture. This additive, alone, gives th...
02/19/2002
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