| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507110000 | 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 | 81 |
| 20080300149 | Polysaccharide based cement additives - A composition comprising a carboxylated, sulfonated polysaccharide and a wellbore servicing fluid. A wellbore servicing composition comprising a hydraulic cement and a carboxylated, sulfonated polysaccharide. A wellbore servicing composition comprising a polysaccharide having carboxylate and sulfonate groups. | 12-04-2008 |
| 20090291861 | WELLBORE FLUID - There is provided a wellbore fluid comprising a polymeric saccharide having a number average molecular weight of not more than 50,000 which is a fructan or a partially-hydrolysed fructan or partially-hydrolysed starch, said fructan of partially-hydrolysed fructan or partially-hydrolysed starch having been modified by the introduction of one or more groups having the formula R—NH—CO— and/or R—CO—, wherein R represents a group having 4 to 32 carbon atoms. | 11-26-2009 |
| 20100216670 | WATER-BASED FLUID FOR PREVENTING THE FORMATION OF W/O EMULSIONS OR FOR RESOLVING W/O EMULSIONS ALREADY FORMED IN POROUS MATRICES - The invention relates to a water-based fluid for applications in the oil field, comprising non-ionic surfactants, stable at temperatures ranging from 10 to 90° C., having an HLB ranging from 8 to 20 and soluble in water, with a saline content ranging from 0 to 60% by weight, and possibly salts. The fluid can be conveniently used as completion fluid for preventing the formation of inverse W/O emulsions or as a remedial fluid for resolving emulsions already formed in oil wells in which oil-based mud has been used. | 08-26-2010 |
| 20100267591 | Subterranean Bridging Agents - The present invention relates to bridging agents for use in subterranean formations, to well drill-in and servicing fluids comprising such bridging agents, and to methods of using such bridging agents and well drill-in and servicing fluids in subterranean drilling operations. An example of a well drill-in and servicing fluid of the present invention comprises a viscosified fluid, a fluid loss control additive, and a bridging agent comprising a degradable material. | 10-21-2010 |
| 20100331221 | Drilling fluid additive containing heated syrup solids - A drilling fluid additive is provided and the additive consist of: syrup solids which are heated to evaporate water and then admixed with a liquid medium, and the syrup solids are derived from a group consisting essentially of agave syrup, barley syrup, sugar syrup, beets syrup, birch syrup, rice syrup, cane syrup, chocolate syrup, coconut syrup, corn syrup, date syrup, fruit syrup, golden syrup, high fructose corn syrup, karo syrup, citrus fruit syrup, maple syrup, molasses, Muscavado syrup, palm syrup, rice syrup, sorghum syrup, Turbinado syrup, vanilla syrup and mixtures and blends thereof. | 12-30-2010 |
| 20110086783 | Air drilling misting fluid contains syrups - An air drilling misting fluid is provided and the fluid comprises: a continuous liquid phase solution comprising syrup, syrup solids and a first liquid medium, the syrup and syrup solids are derived from a group consisting essentially of agave syrup, barley syrup, sugar syrup, beets syrup, birch syrup, rice syrup, cane syrup, chocolate syrup, coconut syrup, corn syrup, date syrup, fruit syrup, golden syrup, high fructose corn syrup, inverted sugar syrup, karo syrup, citrus fruit syrup, maple syrup, molasses, Muscavado syrup, palm syrup, rice syrup, sorghum syrup, Turbinado syrup, vanilla syrup and mixtures and blends thereof; and a second liquid medium. | 04-14-2011 |
| 20110166047 | NITROGEN-FREE INVERT EMULSION WELLBORE FLUID - An invert emulsion wellbore fluid comprising an oleaginous continuous phase, an aqueous discontinuous phase, and an emulsifying fluid, wherein the emulsifying fluid comprises an aliphatic alcohol and a glycoside, is disclosed. | 07-07-2011 |
| 20110237465 | Release of Chemical Systems for Oilfield Applications by Stress Activation - The invention provides a system comprising a encapsulating material (B) and a component (A), wherein said component (A) is trapped within said encapsulating material (B) and said encapsulating material (B) being able to break and release said component (A) under pressure drop higher than 10 bars. | 09-29-2011 |
| 20110275545 | Drilling fluid additive system - A drilling fluid additive system is provided and the system comprises: syrup solids which are heated and/or hydrolyzed and then admixed with a liquid medium, and the syrup solids are derived from a group consisting essentially of agave syrup, barley syrup, sugar syrup, beets syrup, birch syrup, rice syrup, cane syrup, chocolate syrup, coconut syrup, corn syrup, date syrup, fruit syrup, golden syrup, high fructose corn syrup, karo syrup, citrus fruit syrup, maple syrup, molasses, Muscavado syrup, palm syrup, rice syrup, sorghum syrup, Turbinado syrup, vanilla syrup and mixtures and blends thereof. | 11-10-2011 |
| 20110281777 | DRILLING FLUID AND METHODS - A drilling fluid comprising: a non-ionic surfactant including at least one of a branched alcohol ethoxylate and a capped alcohol ethoxylate, a detergent builder and a viscosifier. | 11-17-2011 |
| 20120028853 | DRILLING FLUID, DRILLING FLUID ADDITIVE, METHODS OF MAKING AND USING, SUCH FLUID AND ADDITIVE, METHODS OF OPERATING A WELL - Well fluids and well fluid additives comprising a blend of guar gums of various viscosities, methods of making and using such fluids and additives, and methods of operating a well using such fluids and/or additives. | 02-02-2012 |
| 20120245058 | Graphene-Containing Fluids for Oil and Gas Exploration and Production - A base fluid may contain graphene nanoparticles where the base fluid may include an oil-based fluid, a water-based fluid, and combinations thereof. The oil-based fluid may be a brine-in-oil emulsion, or a water-in-oil emulsion, and the water-based fluid may be an oil-in-water emulsion, or an oil-in-brine emulsion; and combinations thereof. The addition of graphene nanoparticles to the base fluid may improve one or more properties of the fluid, which may include the flow assurance properties of the fluid, the fluid loss control properties of the fluid, the rheological properties of the fluid, the stability of the fluid, the lubricity of the fluid, the electrical properties of the fluid, the viscosity of the fluid, the thermal properties of the fluid, and combinations thereof. The fluid may be a drilling fluid, a completion fluid, a production fluid, and/or a servicing fluid. | 09-27-2012 |
| 20120289435 | Drilling fluid additive with low freezing point - A drilling fluid additive, is provided, and the additive comprises: syrup solids and a liquid medium; and the sugar content of the additive is directly proportionate to the freezing point of the additive. | 11-15-2012 |
| 20120302468 | FORMULATIONS AND USES OF DRILLING FLUIDS CONTAINING VISCOSIFIED PHOSPHATE BRINE - Viscosified phosphate brine base fluids are disclosed, where the fluids include a hydratable polymer, have a density at or above about 10 lb/gal and a viscosity of at least 5 cP. Method for making and using the viscosified phosphate brine base fluids are also disclosed, including using the fluid in drilling, completing, and/or fracturing of oil and/or gas wells. | 11-29-2012 |
| 20120309653 | Method of Fluid Slug Consolidation within a Fluid System in Downhole Applications - A fluid slug consolidation is maintained in a fluid system for use in downhole applications. The fluid system has an interfacing fluid of a different character adjacent to the fluid slug. The method is carried out by admixing a particulate material with at least one of the fluid slug and adjacent interfacing fluid in an amount wherein discrete interfacing fluid margins are formed between the slug and the adjacent interfacing fluid under laminar flow conditions. The fluid system is introduced into a well bore of a well formed in a subterranean formation. In certain applications at least a portion of the particulate material is provided with adhesive properties to facilitate aggregation of the particulate material within the at least one of the fluid slug and adjacent interfacing fluid. | 12-06-2012 |
| 20130178398 | Oxygen Scavenger Compositions for Completion Brines - An oxygen scavenger for completion brines effective and stable in high temperature subterranean formations. In one embodiment, the scavenger contains erythorbate and alkylhydroxlyamine. | 07-11-2013 |
| 20130310282 | Wellbore Servicing Fluids and Methods of Making and Using Same - A method of servicing a wellbore comprising placing an invert emulsion drilling fluid having an oleaginous continuous phase, a non-oleaginous discontinuous phase, and a fluid loss additive into a wellbore wherein the fluid loss additive comprises a quaternary ammonium compound containing at least one ester linkage. A method of servicing a wellbore comprising introducing a clay-free invert emulsion drilling fluid comprising distearoylethyl dimonium chloride to the wellbore. A wellbore servicing fluid comprising an invert emulsion drilling fluid having an oleaginous continuous phase, a non-oleaginous discontinuous phase, and a fluid loss additive into a wellbore wherein the fluid loss additive comprises an esterquat characterized by Structure A: | 11-21-2013 |
| 20130310283 | CURABLE CROSS-LINKABLE COMPOSITIONS FOR USE AS LOST CIRCULATION MATERIAL - The present invention relates to compositions and methods for reducing or preventing the loss of drilling fluids and other well servicing fluids into a subterranean formation during drilling or construction of boreholes in said formation. Specifically, this invention comprises a curable cross-linkable composition capable of free radical polymerization for creating lost circulation material. The curable cross-linkable composition comprises a mixture of (i) an organic compound capable of free radical (co)polymerization comprising a moiety derived from an diisocyanate and a moiety derived from an organic polyol comprising two or more hydroxyl groups having a molecular weight of from 400 to 4,000 and (ii) a reactive diluent comprising an organic compound with a reactive group and a moiety derived from an organic polyol comprising two or more hydroxyl groups having a molecular weight of from 60 to 500. | 11-21-2013 |
| 20140066339 | AQUEOUS SALT-STABILIZED DRILLING FLUIDS - Various salt crystal and agglomeration settling inhibiting agents may aid the ability to keep salt crystals of a desired particle size undissolved and dissolved in an aqueous drilling fluid, including, whey, wine-making residues, “steepwater solubles” or an organic liquid formed from the residue of wet processing of grains, sugar cane, sugar beets, and similar plants for the food and beverage industries for consumption by human or animals, and combinations thereof. A fluid so treated has more uniform properties and a reduced tendency for the salt therein to settle out as compared to an otherwise identical fluid absent an effective proportion or amount of the salt crystal agglomeration and settling inhibiting agent, even for saturated salt fluids. The salt crystal agglomeration and settling inhibiting agents are also believed to be useful in inhibiting or preventing the formation of gas hydrates under gas hydrate forming conditions of low temperature and high pressure. | 03-06-2014 |
| 20140087974 | Particulate Weighting Agents Comprising Removable Coatings and Methods of Using the Same - Additives used in treatment fluids include particulate weighting agents comprising removable coatings which can be used in methods such as drilling and cementing operations; a method includes providing a treatment fluid for use in a subterranean formation, the treatment fluid including a coated particulate weighting agent including a core weighting agent having a first specific gravity and a removable polymer coating having a second specific gravity, the first specific gravity and the second specific gravity are not the same, introducing the treatment fluid into the subterranean formation, and allowing a portion of the removable polymer coating to be removed to alter the specific gravity of the coated particulate weighting agent down hole. | 03-27-2014 |
| 20140128294 | CORROSION INHIBITOR SYSTEMS FOR LOW, MODERATE AND HIGH TEMPERATURE FLUIDS AND METHODS FOR MAKING AND USING SAME - A corrosion control system is disclosed including an anionic oxygen inhibitor, a cationic acid inhibitor or dispersant, and a noxious species inhibitor or scavenger for use in a fluid in contact with a metallic surface at low temperature, moderate temperature and especially at high temperature. A drilling fluid, a completion fluid, a production fluid and a geothermal fluid including an effective amount of the corrosion control system is also disclosed as well as methods for making and using same. | 05-08-2014 |
| 20140200168 | TREATMENT FLUID CONTAINING A CORROSION INHIBITOR POLYMER OF A CARBOHYDRATE AND QUATERNARY AMINE - A treatment fluid comprises: water; a carboxylate; and a corrosion inhibitor, wherein the corrosion inhibitor is environmentally-friendly, biodegradable, and is a polymer, wherein the polymer comprises a carbohydrate backbone and a quaternary amine functional group; wherein a test fluid consisting essentially of the water, the carboxylate, and the corrosion inhibitor, and in the same proportions as in the treatment fluid, is capable of providing a corrosion weight loss to a metal plate of less than 0.05 pounds per square feet (lb/ft | 07-17-2014 |
| 20140349894 | NANOFLUIDS AND METHODS OF USE FOR DRILLING AND COMPLETION FLUIDS - Nanomaterial compositions are useful for applications in drilling and completion fluids as enhancers of electrical and thermal conductivity, emulsion stabilizers, wellbore strength improvers, drag reduction agents, wettability changers, corrosion coating compositions and the like These nanomaterials may be dispersed in the liquid phase in low volumetric fraction, particularly as compared to corresponding agents of larger size. Nanofluids (fluids containing nano-sized particles) may be used to drill at least part of the wellbore. Nanofluids for drilling and completion applications may be designed including nanoparticles such as carbon nanotubes. These fluids containing nanomaterials, such as carbon nanotubes, meet the required rheological and filtration properties for application in challenging HPHT drilling and completions operations. | 11-27-2014 |
| 20150045260 | Thermal Insulating Fluids - Aqueous and substantially anhydrous fluids having particularly low thermal conductivities and variable densities are disclosed. The fluids include: one or more organic and/or inorganic salts and at least one aprotic polar organic solvent, a mixture of aprotic and protic polar organic solvents, and/or a polar organic solvent having both protic and aprotic polar functional group linkages. The fluids optionally include one or more viscosifying agents and are free of cross-linking agents. Methods for formulating and using the fluids are also disclosed. | 02-12-2015 |
| 20150133346 | FILTRATE CONTROL AGENTS IN SOLID FORM - The present invention relates to a process for preparing control agents for applications in the petroleum field, where a polymer bearing —OH, amine and/or amide functions, which is in the form of a divided solid, is reacted with at least one crosslinking agent bearing at least two —R groups capable of reacting with the —OH, amine or amide groups, under conditions where said polymer remains in solid form and where said crosslinking agent is at least partly in vapour form, The invention also relates to the control agents obtained in solid form according to this process, and also to the mixtures of these solid agents with other additives, which can be used in particular for the preparation of cement grout for oil extraction. | 05-14-2015 |
| 20160002522 | ADDITIVES FOR BOOSTING PERFORMANCE OF WATER-BASED DRILLING FLUIDS, DRILLING FLUIDS INCLUDING SAME, AND METHODS OF MAKING AND USING SAME - An additive composition for boosting performance of water-based drilling fluids. Modified water-based drilling fluids including the additive composition. Methods of making the additive compositions. Methods of using the modified drilling fluids to drill or perform other operations in reactive shale formations. The additive compositions include one or more multi-hydroxyl alcohols, a lubricant mix, a shale inhibitor, a strong base to adjust pH, and optionally water up to about 20 percent by volume, based on total volume of the additive composition. | 01-07-2016 |
| 20160053156 | BIOMIMETIC POLYMER FOR STABILIZING WELLBORE AND METHOD FOR PREPARATION OF THE SAME AND DRILLING FLUID - The present invention provides a biomimetic polymer for stabilizing wellbore, a method for preparation of the biomimetic polymer, and a drilling fluid. The polymer contains carboxymethyl chitosan that serves as a backbone and dopamine-derived groups grafted on the backbone. The polymer provided in the present invention can improve the strength of shale in the wellbore, seal the shale pores and reduce the filter loss of drilling fluid, and thereby attains an effect of stabilizing the wellbore in shale formation in drilling process. | 02-25-2016 |
| 20170233643 | Biopolymer Based Cationic Surfactant for Clay Stabilization and Prevention of Sludging | 08-17-2017 |
| 20180022983 | FLAVONOID AND PLANT PHENOLIC ACID ADDITIVES FOR DOWNHOLE FLUIDS | 01-25-2018 |
| 507111000 | Carbohydrate is starch or derivative thereof | 22 |
| 20080300150 | Methods of using polysaccharide based cement additives - A method of servicing a wellbore comprising introducing to the wellbore a wellbore servicing fluid comprising an additive composition comprising a polysaccharide having carboxylate and sulfonate groups. A method of servicing a wellbore comprising preparing at the well site an additive composition comprising a polysaccharide having carboxylate and sulfonate groups,introducing the additive composition into a wellbore servicing fluid, and placing the wellbore servicing fluid into a subterranean formation. A method of preparing a wellbore servicing fluid comprising contacting a polysaccharide composition with an oxidizing agent to form an oxidized polysaccharide, and contacting the oxidized polysaccharide with a sulfonating agent to form a carboxylated sulfonated polysaccharide, and contacting the carboxylated sulfonated polysaccharide with a wellbore servicing fluid. | 12-04-2008 |
| 20090291862 | DRILLING 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. | 11-26-2009 |
| 20100075871 | Stabilized aqueous polymer compositions and their use - Disclosed are stabilized aqueous polymer compositions containing A) a stabilizing amount of a least a sulfur dye or containing a stabilizing amount of a sulfur dye with a compound comprising a heterocyclic system containing nitrogen and sulphur as ring heteroatoms and B) at least one polymer comprising groups which are capable of complex formation with ions. The aqueous polymer compositions are stabilized against thermal or other degradation processes of the polymer by addition of component A) to allow their use even under harsh conditions. | 03-25-2010 |
| 20100093564 | AQUEOUS FLUID AND METHOD OF MAKING AND USING THE SAME - Aqueous fluids comprising polysaccharide, dissolved salt, and borate anions. The fluids are useful, for example, as a drilling fluid. | 04-15-2010 |
| 20100292107 | Spotting fluids containing syrups - A spotting fluid is provided and the spotting fluid consists essentially of: syrup, syrup solids and a liquid medium, said syrup and syrup solids are derived from a group consisting essentially of agave syrup, barley syrup, sugar syrup, beets syrup, birch syrup, rice syrup, cane syrup, chocolate syrup, coconut syrup, corn syrup, date syrup, fruit syrup, golden syrup, high fructose corn syrup, inverted sugar syrup, karo syrup, citrus fruit syrup, maple syrup, molasses, Muscavado syrup, palm syrup, rice syrup, sorghum syrup, Turbinado syrup, vanilla syrup and mixtures and blends thereof, and the liquid medium is selected from a group consisting of water, purified water, ionized water, salt water and mixtures thereof. | 11-18-2010 |
| 20110136701 | HIGH PERFORMANCE WATER BASED FLUIDS - A water based wellbore fluid that includes an aqueous fluid; a micronized weighting agent; a polysaccharide derivative; and at least one fatty acid ester derivative is disclosed. | 06-09-2011 |
| 20110230376 | EMULSIFIED POLYMER DRILLING FLUID AND METHODS OF PREPARATION - A water-based polymer drilling fluid, containing effective quantities of surfactants having HLB numbers equal to or greater than approximately 7, emulsifies oil and bitumen contained in oil sand cuttings, resulting in the oil and bitumen being dispersed into the mud as an emulsion. This eliminates or significantly reduces the ability of the oil, bitumen, and cuttings to clog the well or stick to drill string components when drilling a well through oil-bearing sands, particularly sands containing highly viscous oil or bitumen. The emulsification process separates the sand particles from the oil and bitumen, such that the sand particles can be removed when the mud is run through a conventional shale shaker or other suitable apparatus. | 09-22-2011 |
| 20120190593 | PERMEABILITY BLOCKING WITH STIMULI-RESPONSIVE MICROCOMPOSITES - Disclosed is a two-component fluid loss control system comprising a core substrate and a polymeric shell cooperating with each other to form a microcomposite, wherein the core substrate and the polymeric shell are formed from different materials. The system can demonstrate switchable behavior. The core substrate and the polymeric shell can be further modified, where modifications cooperate with each other to form the microcomposite. Also disclosed are formulations for fluid loss control and methods for controlling fluid loss in a well. | 07-26-2012 |
| 20120214712 | Methods of Using Polysaccharide Based Cement Additives - A method of servicing a wellbore comprising introducing to the wellbore a wellbore servicing fluid comprising an additive composition comprising a polysaccharide having carboxylate and sulfonate groups. A method of servicing a wellbore comprising preparing at the well site an additive composition comprising a polysaccharide having carboxylate and sulfonate groups, introducing the additive composition into a wellbore servicing fluid, and placing the wellbore servicing fluid into a subterranean formation. A method of preparing a wellbore servicing fluid comprising contacting a polysaccharide composition with an oxidizing agent to form an oxidized polysaccharide, and contacting the oxidized polysaccharide with a sulfonating agent to form a carboxylated sulfonated polysaccharide, and contacting the carboxylated sulfonated polysaccharide with a wellbore servicing fluid. | 08-23-2012 |
| 20120283149 | Compositions and Methods for Treatment of Well Bore Tar - Of the many compositions and methods provided herein, one example composition includes a treatment fluid comprising: an aqueous fluid; and a tar stabilizing polymer comprising at least one polymer selected from the group consisting of a styrene polymer, an acrylate polymer, a styrene-acrylate polymer, and any combination thereof. | 11-08-2012 |
| 20120289436 | METHODS FOR CONTROLLING DEPOLYMERIZATION OF POLYMER COMPOSITIONS - A method of controlling or arresting the rate of depolymerization of a polymer composition during a biocide treatment, and use of such methods in oilfield and industrial applications. Also disclosed are methods of preparing a visco-stable application fluid containing a biocide in an amount effective to reduce bacteria count, as well as additive compositions capable of reducing bacteria count in application fluids while maintaining viscosity in such fluids. Also disclosed are methods of preparing biocide-containing application fluids with improved friction reducing properties, as well as related compositions. | 11-15-2012 |
| 20130045896 | EMULSIFIED POLYMER DRILLING FLUID AND METHODS OF PREPARATION - A water-based polymer drilling fluid, containing effective quantities of surfactants having HLB numbers equal to or greater than approximately 7, emulsifies oil and bitumen contained in oil sand cuttings, resulting in the oil and bitumen being dispersed into the mud as an emulsion. This eliminates or significantly reduces the ability of the oil, bitumen, and cuttings to clog the well or stick to drill string components when drilling a well through oil-bearing sands, particularly sands containing highly viscous oil or bitumen. The emulsification process separates the sand particles from the oil and bitumen, such that the sand particles can be removed when the mud is run through a conventional shale shaker or other suitable apparatus. | 02-21-2013 |
| 20130053283 | ALTERNATIVE LIGAND FORMULATIONS FOR CELLULOSE PRODUCTS - This disclosure provides compositions suitable as drilling fluids, completion fluids, work-over fluids, or stimulation/fracking fluids, which exhibit shale inhibiting, thermostabilizing, viscosifying, and fluid loss reducing effects when used for these purposes. In some embodiments, this disclosure provides compositions that include a cellulose product comprising the contact product of: at least one cellulosic ether; at least one salt of a polyvalent metal ion; and at least one ligand or a salt of the ligand. The resulting cellulose products are useful in drilling of oil, gas, and other wells. | 02-28-2013 |
| 20130225455 | FLUID COMPOSITION COMPRISING GLASS MICROSPHERES AND METHOD OF MAKING AND USING THE SAME - There is provided aqueous fluids comprising a mixture of at least two polysaccharides, water, and glass microspheres having pacified surfaces. There is also provided a method for making a fluid the method comprising (a) selecting a plurality of glass microspheres having alkaline surfaces; (b) coating the surfaces of the plurality of glass microspheres with an acid; and (c) combining the coated glass microspheres with (i) a mixture comprising at least two cross-linkable polysaccharides, and (ii) water. The fluids are useful, for example, as a drilling fluid. | 08-29-2013 |
| 20130296199 | DRILLING LOST CIRCULATION MATERIAL - An engineered composition for reducing lost circulation in a well includes a mixture of coarse, medium and optional fine particles, and a blend of long fibers and short fibers. The long fibers are rigid and the short fibers are flexible. The long fibers form a tridimensional mat or net in the lost-circulation pathway that traps the mixture of particles and short flexible fibers to form a mud cake. The mixture of particles and blend of fibers may be added to water based and oil-based drilling fluids. The composition, size, and concentration of each component of the mixture of particles and blend of fibers may be fine-tuned for each application. | 11-07-2013 |
| 20130324441 | Drilling Fluids Useful For Limiting Tar Sand Accretion - A drilling fluid is provided that comprises a non-ionic or cationic polymer having general formula I or II. The drilling fluid may be used in drilling or other oilfield operations to prevent or limit the accretion of hydrocarbons to metal components when these are in contact with highly viscous hydrocarbons such as those present in formations containing heavy crude oil or tar sand. | 12-05-2013 |
| 20140024560 | DRILLING FLUID USING SURFACTANT PACKAGE - A drilling fluid, comprising an aqueous continuous phase, and a surfactant system comprising a mixture of an ester phosphate and a non-ionic ethoxylated alcohol. The drilling fluid may also contain one or more of at least one salt, an alkaline material, a viscosifying agent, a starch or starch derivative, a bridging agent, a weighting material, and a diesel oil or non-aromatic oil. | 01-23-2014 |
| 20140128295 | WATER-BASED DRILLING FLUID WITH CYCLODEXTRIN SHALE STABILIZER - Well fluids and methods are provided that can be used for stabilizing a shale formation, especially during drilling of a well into or through a shale formation. The well fluids include: (i) a continuous water phase; (ii) a viscosity-increasing agent, wherein the viscosity-increasing agent comprises water-soluble hydrophilic polymer; (iii) a fluid loss control agent; and (iv) a cyclodextrin-based compound. The methods of drilling include the steps of: (A) introducing the well fluid into a zone of a subterranean formation; and (b) drilling the zone. | 05-08-2014 |
| 20140323360 | NOVEL STRONTIUM CARBONATE BRIDGING MATERIALS AND METHODS FOR MAKING AND USING SAME - Drilling fluids were developed including a base fluid, a weighting agent and/or a bridging agent, and a thickening agent, where the weighting agent and/or the bridging agent includes a particulate strontium carbonate having a desired distribution, for weighting agents, the distribution includes particles between 2μ and 5000μ and for bridging agents, the distribution is constructed from particles having specific sizes. Methods making and using the drilling fluids were also discovered. | 10-30-2014 |
| 20160122614 | WEIGHTED WELL FLUIDS - Fluids and methods of making and using the fluids that include, for example, well bore treatment fluids, kill fluids, packer fluids, thermal insulating fluids and the like that contain soluble weighting material. The fluids include: (a) an aqueous solvent such as water, and optionally one or more water-miscible organic liquids; and (b) one or more organic cationic tungstates, molybdates, and/or silicates dissolved in the solvent. In some cases, the fluids are substantially free of lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr) salts and/or ions. The fluid may also be an oil-based emulsion including the aqueous-based fluid. Methods of making and using both the aqueous fluids and oil-based emulsions are also disclosed. | 05-05-2016 |
| 20160122615 | WATER-BASED DRILLING FLUID WITH CYCLODEXTRIN SHALE STABILIZER - Well fluids and methods are provided that can be used for stabilizing a shale formation, especially during drilling of a well into or through a shale formation. The well fluids include: (i) a continuous water phase; (ii) a viscosity-increasing agent, wherein the viscosity-increasing agent comprises water-soluble hydrophilic polymer; (iii) a fluid loss control agent; and (iv) a cyclodextrin-based compound. The methods of drilling include the steps of: (A) introducing the well fluid into a zone of a subterranean formation; and (b) drilling the zone. | 05-05-2016 |
| 20160137905 | COMPOSITION FOR FINES AGGLOMERATION - A method of treating a subterranean formation, the method includes: obtaining or providing a composition comprising a cationic polymer and water; and contacting the composition with a subterranean material downhole. | 05-19-2016 |
| 507112000 | Carbohydrate is cellulose or derivative thereof | 22 |
| 20100197527 | METHODS AND COMPOSITIONS RELATING TO THE HYDROLYSIS OF WATER-HYDROLYSABLE MATERIALS - Treatments fluids relating to the hydrolysis of water-hydrolysable materials are provided. In one embodiment, provided is a treatment fluid that comprises an aqueous liquid, a water-miscible solvent, and a water-hydrolysable material. Also provided is a hydrolysis retarder composition that comprises an aqueous liquid and a water-miscible solvent. | 08-05-2010 |
| 20110105367 | THERMOSET NANOCOMPOSITE PARTICLES, PROCESSING FOR THEIR PRODUCTION, AND THEIR USE IN OIL AND NATURAL GAS DRILLING APPLICATIONS - Thermoset polymer particles are used in many applications requiring lightweight particles possessing high stiffness, strength, temperature resistance, and/or resistance to aggressive environments. The present invention relates to the use of two different methods, either each by itself or in combination, to enhance the stiffness, strength, maximum possible use temperature, and environmental resistance of such particles. One method is the application of post-polymerization process steps (and especially heat treatment) to advance the curing reaction and to thus obtain a more densely crosslinked polymer network. In general, its main benefits are the enhancement of the maximum possible use temperature and the environmental resistance. The other method is the incorporation of nanofillers, resulting in a heterogeneous “nanocomposite” morphology. In general, its main benefits are increased stiffness and strength. Nanofiller incorporation and post-polymerization heat treatment can also be combined to obtain the benefits of both methods simultaneously. The present invention relates to the development of thermoset nanocomposite particles. It also relates to the optional further improvement of the heat resistance and environmental resistance of said particles via post-polymerization heat treatment. Furthermore, it also relates to processes for the manufacture of said particles. Finally, it also relates to the use of said particles in the construction, drilling, completion and/or fracture stimulation of oil and natural gas wells; for example, as a proppant partial monolayer, a proppant pack, an integral component of a gravel pack completion, a ball bearing, a solid lubricant, a drilling mud constituent, and/or a cement additive. | 05-05-2011 |
| 20110312857 | Drilling, Drill-In and Completion Fluids Containing Nanoparticles for Use in Oil and Gas Field Applications and Methods Related Thereto - Drilling, drill-in and completion fluids containing nanoparticles for use in hydrocarbon drilling and recovery processes and methods related thereto are provided. The fluids also include a dual acting shield agent that shields the nanoparticles and also acts as a viscosifier. The fluids can be used in various types of hydrocarbon drilling and recovery processes, such as drilling, drill in, completion, and the like. | 12-22-2011 |
| 20120015852 | Nanofluids and Methods of Use for Drilling and Completion Fluids - Nanomaterial compositions are useful for applications in drilling and completion fluids as enhancers of electrical and thermal conductivity, emulsion stabilizers, wellbore strength improvers, drag reduction agents, wettability changers, corrosion coating compositions and the like. These nanomaterials may be dispersed in the liquid phase in low volumetric fraction, particularly as compared to corresponding agents of larger size. Nanofluids (fluids containing nano-sized particles) may be used to drill at least part of the wellbore. Nanofluids for drilling and completion applications may be designed including nanoparticles such as carbon nanotubes. These fluids containing nanomaterials, such as carbon nanotubes, meet the required rheological and filtration properties for application in challenging HPHT drilling and completions operations. | 01-19-2012 |
| 20120028854 | FLUID FOR DEEP OFFSHORE DRILLING - The disclosure relates to a drilling fluid having a viscosity at 40° C. less than or equal to 2.5 mm | 02-02-2012 |
| 20120108472 | Thermoplastic Cellulosic Fiber Blends as Lost Circulation Materials - A method is disclosed for reducing lost circulation in drilling wells, employing composite materials as lost circulation materials. The composites comprise a thermoplastic polymer and cellulosic fibers. Optionally the composites may include other components such as calcium carbonate, clay, oil and other blending agents. | 05-03-2012 |
| 20120202717 | APPLICATION OF DEGRADABLE FIBERS IN INVERT EMULSION FLUIDS FOR FLUID LOSS CONTROL - A method of treating a subterranean formation including emplacing in a wellbore a fluid, comprising an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one degradable material, and at least one bridging material, and contacting the formation with the fluid. A method and apparatus related to an invert emulsion fluid loss pill including an oleaginous continuous phase, a non-oleaginous discontinuous phase, an emulsifier, at least one degradable material, wherein the degradable material hydrolyzes to release an organic acid, and at least one bridging material. | 08-09-2012 |
| 20120231978 | Permeability-Modifying Drilling Fluids and Methods of Use - Drilling fluids comprising a base fluid and a hydrophobically modified polymer. The hydrophobically modified polymer consisting of alkyl chains having a carbon chain length between about 4 and about 22 carbons bound to a hydrophilic polymer. The hydrophilic polymer (1) consists of a polymer backbone that contains polar heteroatoms, at least one of which is not a nitrogen atom, and at least a portion of the polar heteroatoms are functionalized with the alkyl chains; and, (2) comprises at least one hydrophilic polymer selected from the group consisting of a cellulose, a chitosan, a polyetheramine, a polyhydroxyetheramine, a polylysine, and a polysulfone. | 09-13-2012 |
| 20120264657 | Emulsion Stabilizing Agents for Drilling and Completion Fluids - Stabilized emulsion compositions comprising an oleaginous fluid, a fluid that is at least partially immiscible with the oleaginous fluid, and, an emulsion stabilizing agent. The emulsion stabilizing agent comprises a first ionic compound soluble in the oleaginous fluid or the fluid that is at least partially immiscible with the oleaginous fluid and a second ionic compound with a charge of opposite sign of the first ionic compound and that is at least partially soluble in the opposite fluid as the first ionic compound. The first ionic compound and the second ionic compound are selected from the group consisting of: a cationic ionic surfactant, an anionic surfactant, a cationic polyelectrolyte, an anionic polyelectrolyte, and a combination thereof. | 10-18-2012 |
| 20120316088 | Method to Characterize Fracture Plugging Efficiency for Drilling Fluids - A method for determining a Plug Normal Stress Difference (ΔN | 12-13-2012 |
| 20120316089 | Methods to Characterize Fracture Plugging Efficiency for Drilling Fluids - A drilling fluid may include a base drilling fluid and a plurality of particulates, wherein a concentration of the particulates in the base drilling fluid provides for ΔN | 12-13-2012 |
| 20130035263 | AGENT AND COMPOSITION FOR OILFIELD APPLICATIONS - An agent for oilfield applications capable of being dispersed in water is nanofibrillar cellulose. The nanofibrillar cellulose mixed in water gives shear-thinning behavior to the composition, which is pumped to a subterranean oil-containing formation to aid in oil recovery. | 02-07-2013 |
| 20130196883 | CELLULOSE NANOWHISKERS IN WELL SERVICES - A method is provided for use in various well services, the method including the steps of: (a) forming or providing a well fluid comprising cellulose nanowhiskers; and (b) introducing the well fluid into a well. The method can be used, for example, for increasing the strength of a cement, for increasing the viscosity of a water-based well fluid, such as for a kill pill, a fracturing fluid, a gravel packing fluid. | 08-01-2013 |
| 20130261031 | METHODS FOR PRODUCING AND EMPLOYING OIL AND GAS WELL DRILLING AND COMPLETION FLUIDS AS WELL AS HYDRAULIC FRACTURING FLUIDS EMPLOYING TRIGLYCERIDE PROCESSING BY PRODUCTS AND PROPYLENE GLYCOL RECOVERED FROM AIRCRAFT DEICING OPERATIONS - The present invention relates to processes employing industrial streams, including glycerol-containing by-products of triglyceride processing as well as waste glycol streams recovered from several sources, to produce oil well drilling, completion and hydrofracturing fluids. | 10-03-2013 |
| 20130274149 | FLUIDS AND METHODS INCLUDING NANOCELLULOSE - Treatment fluids and methods for treating a subterranean formation are disclosed that include introducing a treatment fluid into a subterranean formation, the treatment fluid containing a nanocrystalline cellulose. | 10-17-2013 |
| 20130288932 | METHODS OF CRYODESICCATING A BROTH COMPRISING A BIOPOLYMER OF AN EXOPOLYSACCHARIDE - According to an embodiment, a method of providing a biopolymer comprises: cryodesiccating a broth, wherein the broth comprises: (A) a biopolymer, wherein the biopolymer is an exopolysaccharide; and (B) a liquid growth medium. According to certain embodiments, the biopolymer is produced by the fermentation of at least one carbohydrate via a microbe. According to an embodiment, the microbe is a bacterium. According to another embodiment, the microbe is a fungus. | 10-31-2013 |
| 20140121134 | Drilling Fluid Compositions and Methods for Use Thereof in Subterranean Formations - A method comprising drilling a wellbore into a subterranean formation; providing a drilling fluid comprising an aqueous base fluid and a property control package, the property control package comprising: a stabilizing agent; a filtration control agent; and a suspension enhancer; introducing the drilling fluid into the wellbore in the subterranean formation; and continuously circulating the drilling fluid during the drilling of the wellbore. | 05-01-2014 |
| 20150072902 | Fluids and Methods Including Nanocellulose - Treatment fluids and methods for treating a subterranean formation include introducing a treatment fluid into a subterranean formation, the treatment fluid containing a nanocrystalline cellulose. The treatment fluid may be a fracturing fluid, well control fluid, well kill fluid, well cementing fluid, acid fracturing fluid, acid diverting fluid, a stimulation fluid, a sand control fluid, a completion fluid, a wellbore consolidation fluid, a remediation treatment fluid, a spacer fluid, a drilling fluid, a frac-packing fluid, water conformance fluid or a gravel packing fluid. | 03-12-2015 |
| 20160168443 | NANOCELLULOSE MATERIALS FOR OILFIELD APPLICATIONS | 06-16-2016 |
| 507113000 | Carboxyalkylcellulose (e.g., CMC, CMHEC, etc.) | 1 |
| 20160032168 | VISCOSIFIER FOR OIL WELL FLUIDS - The present invention comprises a viscosifier for oil well fluids, said viscosifier comprising a cross-linked micro- or nano-fibrillated cellulose (MFC). | 02-04-2016 |
| 507114000 | Hydroxyalkylcellulose (e.g., HEC, etc.) | 2 |
| 20090054270 | HYDROCOLLOID GUM COMPOSITIONS, METHODS OF FORMING THE SAME, AND PRODUCTS FORMED THEREFROM - Hydrocolloid gum compositions, methods of forming the same, and products formed therefrom. The composition may comprise a hydrocolloid gum, such as xanthan gum, a cellulose thickener, and a solvent component. The solvent component may comprise a lactate ester and, optionally, an alkylene glycol alkyl ether. | 02-26-2009 |
| 20140066340 | Low Toxicity Viscosifier and Methods of Using the Same - Viscosifying compositions having reduced toxicity are used in treatment fluids in subterranean operations; methods include providing such treatment fluids including a viscosifying composition and an aqueous base fluid, the viscosifying composition including hydroxyethyl cellulose, about 10% to about 60% by weight of 2-pyrrolidone, and about 10% to about 60% by weight of a water soluble monoalkyl ether of propylene glycol having substantially no swelling effect on the hydroxyethyl cellulose, wherein a weight ratio of hydroxyethyl cellulose to 2-pyrrolidone is in a range from about 1:2 to about 2.6:1 and the method including placing the treatment fluid in a subterranean formation. | 03-06-2014 |
| 507115000 | Carbohydrate is hydroxyalkyl ether derivative (e.g., HPG, etc.) | 3 |
| 20110053807 | METHODS TO CONTROL FLUID LOSS IN A WELL BORE - The invention discloses a method of controlling fluid loss from a subterranean formation of a well bore. In a first aspect, the method is done by providing a treatment fluid made of an aqueous fluid and a hydrophobic polymer; and introducing the treatment fluid into the wellbore. In a second aspect, the method is done by providing a treatment fluid made of water and a water soluble polymer; providing in the treatment fluid a fluid loss additive having a hydrophobic polymer; using the treatment fluid in a well bore of a subterranean formation; allowing the treatment fluid to establish a permeable filter cake with the water soluble polymer in at least a portion of the well bore; and allowing hydrophobic polymer to enter into the filter cake to reduce permeability of the filter cake. | 03-03-2011 |
| 20140315763 | OIL BASED CONCENTRATED SLURRIES AND METHODS FOR MAKING AND USING SAME - New hydrocarbon based slurry compositions and drilling, fracturing, completion and production fluids including the hydrocarbon based slurry composition are disclosed, where the composition includes a hydrocarbon soluble polymer adapted to decrease particle settling rates of particulate materials present in the fluids and in the case of fluids that include hydratable materials to increase hydration properties of such materials. | 10-23-2014 |
| 20150344764 | VISCOUS SETTABLE FLUID FOR LOST CIRCULATION IN SUBTERRANEAN FORMATIONS - A method of treating a well the method including the steps of: (A) forming a fluid including: (i) a shear-thinning aqueous liquid phase; and (ii) an inorganic setting material; wherein the fluid is shear-thinning, pumpable, and settable; and (B) introducing the fluid into the well. | 12-03-2015 |
| 507116000 | Ester is higher fatty or carboxylic acid ester (e.g., sorbitan oleate, etc.) | 5 |
| 20080274918 | IN SITU MICROEMULSIONS USED AS SPACER FLUIDS - Nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor III) or single phase microemulsions (Winsor IV) may be formed in situ during hydrocarbon recovery operations after drilling with OBM or SBM using one or more fluid pills. The nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both or single phase microemulsions remove oil and solids from the well and wellbore surfaces. In one non-limiting embodiment, a single phase microemulsion (SPME) or other in situ-formed fluid may be created from a polar phase, a nonpolar phase, at least one viscosifier, and at least one surfactant. | 11-06-2008 |
| 20130130942 | Dissipative Surfactant Aqueous-Based Drilling System for Use in Hydrocarbon Recovery Operations from Heavy Oil and Tar Sands - A water-based drilling fluid which includes an aqueous fluid and a water-soluble dissipative surfactant composition is described, wherein the dissipative surfactant composition includes at least one fatty acid or ester derivative of a plant or vegetable oil. Also described are methods of using such aqueous-based drilling fluids including the dissipative surfactant composition as described in hydrocarbon recovery operations associated with oil/tar sand, where such fluids act to increase the dispersant qualities of hydrocarbons within the oil/tar sand, and where such fluid exhibit a reduced coefficient of friction. | 05-23-2013 |
| 20130324442 | Compositions and Method for Treating Out Hydrogen Sulfide and Preventing Settling of Precipitate in an Environmentally Responsible Drilling and Packer Fluid - An environmentally responsible iron chelating additive and method for removing hydrogen sulfide or sulfide ions from drilling and packer fluids and preventing settling of precipitates. Iron chelating agents selected from the group consisting of ferrous lactate, ferrous gluconate, ferrous bis glycinate, ferrous citrate, ferrous acetate, ferrous fumarate, ferrous succinate, ferrous sacchrate, ferrous tartarate, ferrous glycine sulfate, ferrous glutamate, ferrous ascorbate, ferrous polymaltose, or a combination thereof, may be used. When the fluids are oil based, the iron chelating agents are added to the water phase of an emulsion, and the emulsion is added to the fluid. Viscosifiers may also be added to the drilling fluid with the emulsion. | 12-05-2013 |
| 20140162909 | PRECIPITATED WEIGHTING AGENTS FOR USE IN WELLBORE FLUIDS - A method of formulating a wellbore fluid that includes precipitating a weighting agent from a solution; and adding the precipitated weighting agent to a base fluid to form a wellbore fluid is disclosed. Fluids and methods of formulating wellbore fluids that contain dispersant coated precipitated weighting agents are also disclosed. | 06-12-2014 |
| 20150031588 | IN SITU MICROEMULSIONS USED AS SPACER FLUIDS - Nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both (Winsor III) or single phase microemulsions (Winsor IV) may be formed in situ during hydrocarbon recovery operations after drilling with OBM or SBM using one or more fluid pills. The nanoemulsions, miniemulsions, microemulsion systems with excess oil or water or both or single phase microemulsions remove oil and solids from the well and wellbore surfaces. In one non-limiting embodiment, a single phase microemulsion (SPME) or other in situ-formed fluid may be created from a polar phase, a nonpolar phase, at least one viscosifier, and at least one surfactant. | 01-29-2015 |
