| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 507219000 |
Organic component is solid synthetic resin
| 234 |
| 507209000 |
Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons
| 177 |
| 507239000 |
Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding
| 134 |
| 507235000 |
Organic component contains phosphorus attached directly or indirectly to carbon by nonionic bonding
| 36 |
| 507252000 |
Organic component contains sulfur attached directly or indirectly to carbon by nonionic bonding
| 31 |
| 507205000 |
Organic component contains fluorine bonded directly to carbon
| 25 |
| 507261000 |
Organic component contains ether linkage (e.g., PEG ether, etc.)
| 21 |
| 507260000 |
Organic component is polycarboxylic acid, ester, or salt thereof
| 19 |
| 507204000 |
Organic component is cellular or fibrous material derived from plant or animal source (e.g., wood, nutshell, paper, leather, cotton, etc.)
| 19 |
| 507206000 |
Organic component is lignin or humate or derivative thereof (e.g., tannin, quebracho extract, etc.)
| 11 |
| 507265000 |
Organic component is a fat, fatty alcohol, fatty oil, ester-type wax, fatty still residue, or higher fatty acid or salt thereof
| 10 |
| 507233000 |
Organic component contains silicon attached directly or indirectly to carbon by nonionic bonding
| 7 |
| 507266000 |
Organic component contains an alcohol group
| 7 |
| 507267000 |
Organic component contains carboxylic acid, ester, or salt thereof
| 6 |
| 507263000 |
Organic component contains a carbocyclic group (e.g., cycloaliphatic, aromatic ring, tall oil, etc.) | 4 |
| 20080261837 | Low-Density Ceramic Proppant and Its Production Method - A low-density ceramic proppant is formed from a light aggregate of a natural mineral and a ceramic binding material in the form of a proppant granule. The light aggregate expands in volume when burnt so that the density of the aggregate is changed. A method of preparing a proppant material is carried out by pre-crushing and pre-mixing of raw components. This is followed by their granulation into proppant granules, drying and screening of the granules to a selected size. The raw components include at least a ceramic binding material and a light aggregate of a natural mineral that, when burnt, expands in volume so that the specific volume of the aggregate is changed. The burning of the light aggregate may be accomplished before or after the aggregate is mixed with the binding material. | 10-23-2008 |
| 20150065402 | COMPOUND OF BIODEGRADABLE SURFACTANTS FOR SEPARATING IMPURITIES IN A HYDROCARBON - Compounds of biodegradable surfactants useful for optimizing the separation of impurities typical of hydrocarbons, and designed to intervene and stabilize the molecular structure of crude oil, with no significant alterations of the crude's intrinsec composition are disclosed. The biodegradable surfactants compounds coexist with a non-ionic surfactant and an organic mix in emulsion form with the purpose of isolating crude from the pipeline, reduce friction to improve crude flow and to enter the crude macromolecule to modify the hydrocarbon chain to reduce its density and thus its viscosity; including compounds of biodegradable surfactants that comprise sodium hydroxide | 03-05-2015 |
| 20150094241 | CORROSION INHIBITOR FOR ACID STIMULATION SYSTEMS - An oil well being subjected to an acid stimulation may be treated with a corrosion inhibitor including an Ammonium Iodide Ion Source, a first carbonyl containing compound having a general formula: | 04-02-2015 |
| 20220135869 | SOLVENT BLENDS FOR ENHANCED HYDROCARBON RECOVERY PROCESS METHODS - A solvent blend for breaking down and reducing the viscosity of petroleum substance consists essentially of one or more methyl esters of C14-C18 fatty acids, one or more C9-C20 low aromatic hydrocarbon solvents, and one or more C4-C8 high aromatic hydrocarbon solvents, with the high aromatic solvent fraction being dispersed within the solvent blend in droplet form. The solvent blend may be produced by mixing the high aromatic solvent fraction into an intermediate or base blend consisting essentially of the methyl ester fraction and the low aromatic solvent fraction, with the base blend being produced by mixing the lower aromatic solvent fraction into the methyl ester fraction such that the lower aromatic solvent fraction is dispersed within the methyl ester fraction in droplet form. | 05-05-2022 |
| 507268000 |
Organic component contains a carbonyl group (e.g., aldehyde, ketone, etc.) | 2 |
| 20110065614 | CORROSION INHIBITOR FOR ACID STIMULATION SYSTEMS - An oil well being subjected to an acid stimulation may be treated with a corrosion inhibitor including an Ammonium Iodide Ion Source, a first carbonyl containing compound having a general formula: | 03-17-2011 |
| 20130090271 | INHIBITING CORROSION CAUSED BY AQUEOUS ALDEHYDE SOLUTIONS - Aldehydes useful as H | 04-11-2013 |
| 507232000 |
Organic component is asphalt or a component or derivative thereof | 1 |
| 20110152136 | SOLVENT ASSISTED OIL RECOVERY - The recovery of oil from a reservoir is assisted by injecting a diluent into the reservoir formation to reduce the viscosity of the crude oil. This diluent is a mixture of a material which is an asphaltene precipitant, especially supercritical carbon dioxide, and a more polar material which comprises at least one aliphatic compound which includes at least one of a cycloaliphatic ring, an olefinic unsaturation, an ester or ether group. The inclusion of such an aliphatic compound which is more polar than the asphaltene precipitant reduces asphaltene precipitation and can enhance the efficiency of oil recovery when the precipitant is by supercritical carbon dioxide. | 06-23-2011 |
| Entries |
| Document | Title | Date |
|---|
| 20080220991 | CONTACTING SURFACES USING SWELLABLE ELEMENTS - The present disclosure includes a system and method contacting surfaces using swellable elements. In some implementations, an apparatus includes a tubing and a polymer compound. The tubing includes surface and is configured to longitudinally conduit fluid. The polymer compound is adjacent at least a portion the surface of the tubing and operable to expand at least in a radial direction in response to at least an activating agent. The polymer compound comprises nano particles with an aspect ratio at least 2.5. | 09-11-2008 |
| 20080227666 | RECONDITIONING PROCESS FOR USED HYDROCARBON BASED STIMULATION FLUID - A process treats a fluid stream of used fracturing fluid containing contaminants and forms a reconditioned fluid stream. Contaminants are removed by the combination of distillation, electrostatic agglomeration, decanting, and filtration or by distillation and optional filtering. Optionally, in each case, the filtered fluid stream is treated in a clay tower to remove residual contaminants. | 09-18-2008 |
| 20080234146 | Proppant and Production Method Thereof - The invention relates to the oil-and-gas production industry and can be used for enhancement of the production of oilfield wells as it prevents the fracture from closing by pumping of propping granules (proppant) during the hydraulic fracturing of oil-producing formations. Higher stimulation of a reservoir through using hydraulic fracturing is provided with the proppant as particulate with spherical or elliptic form, made of ceramic, polymer, metal, or glass and having higher roughness than regular proppant, wherein the surface roughness is nonuniform and described by two criteria A and B, varying in the intervals: A=0.0085−0.85; B=0.001−1.0. The proppant manufacturing method comprising the preparation of raw material, mixing, granulation, drying, firing, wherein an additional stage of creation of surface roughness is added at the granulation stage and/or the firing stage. | 09-25-2008 |
| 20090042748 | Method of Acidizing Sandstone Formations - An acidizing fluid for sandstone formations is provided, along with methods of acidizing a sandstone formation penetrated by a wellbore. The aqueous acid treatment is a mixture of an aqueous liquid, a fluoride source, and an effective amount of at least one homopolymer or copolymer of a polycarboxylic acid, salt thereof or derivative thereof, which is introduced into the wellbore, and allowed to acidize the formation and concurrently inhibit calcium fluoride formation and impart calcium tolerance to the fluid. | 02-12-2009 |
| 20090062154 | PROPPANTS AND ANTI-FLOWBACK ADDITIVES MADE FROM SILLIMANITE MINERALS, METHODS OF MANUFACTURE, AND METHODS OF USE - Spherical and rod-shaped proppants and anti-flowback agents made from sillimanite minerals possess high strength and high conductivity. The sillimanite minerals may be selected from the group consisting of kyanite, sillimanite, and andalusite and may be used alone or in combination with other materials, such as bauxite, kaolin, meta-kaolin, pure or technical grade alumina (about 98%-99.9% alumina by weight), alumina-containing slag, zirconia, silica, iron, alkali elements (such as calcium, magnesium, and sodium), and virtually any other mineral containing alumina. The starting material may optionally be milled to achieve better compacity and crush resistance in the final proppant or anti-flowback agent. A fracturing fluid may comprise the rods or spheres alone, or in combination with each other or other proppants or anti-flowback agents of different shapes. | 03-05-2009 |
| 20090118144 | Methods for Manipulation of Air Flow into Aquifers - A method of treating a subterranean formation penetrated by a wellbore to mitigate the production of unwanted air from the wellbore is carried out by forming a treatment fluid containing a water-wetting surfactant and a carrier fluid. The treatment fluid is then introduced into the wellbore. The treatment or treatments may be performed remedially or prophylacticaly. The treatment may include the completion and production of zones containing the undesirable air and the deliberate formation of cones therein. | 05-07-2009 |
| 20090137430 | Method for simultaneous removal of asphaltene, and/or paraffin and scale from producing oil wells - A method for cleaning oil wells to increase the flow of oil thereof by use of a unique aqueous cleaning emulsion comprising of water, hydrocarbon solvent, and detergent. This one step method provides for the simultaneously cleaning/removal of asphaltene and/or paraffin and scale. This method can be used alone or with the assistance of a wash tool which is a combination pressure and surge wash tool having a nipple assembly. A by-pass port is coupled to the nipple assembly and a diverter cup is coupled to the by-pass port. A plurality of pressure wash cups are positioned on the tool. A pressure wash port is located between the plurality of pressure wash cups and a pump shoe assembly is coupled to a bottom pressure wash cup. | 05-28-2009 |
| 20100056400 | Use of Mineral Oils to Reduce Fluid Loss for Viscoelastic Surfactant Gelled Fluids - Fluids viscosified with viscoelastic surfactants (VESS) may have their fluid loss properties improved with at least one mineral oil which has a viscosity greater than 20 cps at ambient temperature. The mineral oil may initially be dispersed oil droplets in an internal, discontinuous phase of the fluid. In one non-limiting embodiment, the mineral oil is added to the fluid after it has been substantially gelled in an amount between about 0.2 to about 10% by volume. | 03-04-2010 |
| 20100105579 | PROPPANT, PROPPANT PRODUCTION METHOD AND USE OF PROPPANT - The invention relates to the area of oil and gas production (especially, to the production in which the propping technique is used for the stimulation of a well) and can be used in the development of a composition and a method of production of propping agents (proppant), as well as a method of application of these propping agents. A new type of proppant, proppant production method and use of the proppant are based on allowing the production of proppant having an apparent density of 2.5 to 4.0 g/cm | 04-29-2010 |
| 20110224110 | Particles in Oil for Viscoelastic Surfactant Gelled Fluids - Fluids viscosified with viscoelastic surfactants (VESs) may have their fluid loss properties improved with the presence of at least one mineral oil in combination with at least one particulate fluid loss control agent that may be an alkaline earth metal oxides, alkaline earth metal hydroxides, transition metal oxides, transition metal hydroxides, and mixtures thereof. The mineral oil may initially be dispersed oil droplets in an internal, discontinuous phase of the fluid. In one non-limiting embodiment, the mineral oil is added to the fluid after it has been substantially gelled. The particulate fluid loss control agent may be added in any order relative to the VES and the mineral oil fluid loss control agent. The mineral oil may enhance the ability of a particulate fluid loss control agent to reduce fluid loss. The presence of the mineral oil may also eventually reduce the viscosity of the VES-gelled aqueous fluid. | 09-15-2011 |
| 20120149605 | Composition and Method For Using Waxy Oil-External Emulsions To Modify Reservoir Permeability Profiles - A waxy oil-external emulsion is provided for injection into a selected zone of a subsurface formation. The selected zone is typically a high permeability zone. The emulsion generally comprises oil, added wax, and water. The emulsion may also include an emulsifying agent and a solvent. The emulsion is formulated to be a liquid at a temperature greater than a targeted temperature in the subsurface formation, but a solid at the targeted temperature. The targeted temperature is typically the maximum operating temperature for the formation. A method of formulating the emulsion is also provided. Further, a method of plugging a high permeability zone using the emulsion is disclosed. | 06-14-2012 |
| 20120264660 | Method of Tracking Fluids Produced from Various Zones in Subterranean Well - A traceable treatment composition for treating a subterranean formation having multiple zones penetrated by a well bore comprising a homogenous blend of a tracking composition and a resin composition. The tracking composition comprises a substantially non-radioactive tracking material selected from the group consisting of a metal salt. The metal portion of the metal salt may be selected from the group consisting of gold, silver, lithium, molybdenum, and vanadium. The metal salt may also be selected from the group consisting of: barium bromide, barium iodide, beryllium fluoride, beryllium bromide, beryllium chloride, cadmium bromide, cadmium iodide, chromium bromide, chromium chloride, chromium iodide, cesium bromide, cesium chloride, sodium bromide, sodium iodide, sodium nitrate, sodium nitrite, potassium iodide, potassium nitrate, manganese bromide, zinc bromide, zinc iodide, sodium monofluoroacetate, sodium trifluoroacetate, sodium 3-fluoropropionate, potassium monofluoroacetate, potassium trifluoroacetate, and potassium 3-fluoropropionate. | 10-18-2012 |
| 20120322696 | PROPPANTS FOR REMOVAL OF CONTAMINANTS FROM FLUID STREAMS AND METHODS OF USING SAME - The invention relates to the proppants and proppant substrates treated with active compounds that reduce the presence of contaminants in fluids, methods of using those materials, as well as methods of making those materials. The invention further provides that the contaminated fluids are associated with wells, including oil and gas wells. | 12-20-2012 |
| 20130130946 | STABILIZATION OF EMULSIONS CONTAINING RESINOUS MATERIAL FOR USE IN THE FIELD OF OIL OR GAS WELL TREATMENTS - Emulsions for use in a well including: (a) a water-insoluble resinous material; (b) water; and (c) an emulsifier, wherein the emulsifier comprises a non-ionic, a cationic, or a zwitterionic emulsifier; wherein the continuous phase of the emulsion comprises the water; wherein a dispersed phase of the emulsion comprises the resinous material; wherein the dispersed phase is in the form of droplets having a size distribution range such that at least 50% of the droplets have a size of 0.5 micrometers-500 micrometers; wherein the resinous material of the droplets is in a concentration of at least 5% by weight of the water; and wherein the composition of the droplets has a viscosity of less than 2,000 Poise measured at 20° F. Methods include the steps of: (a) forming an emulsion described above; and (b) introducing the emulsion into a portion of a subterranean formation. | 05-23-2013 |
| 20130143776 | USE OF WAX-COATED SAND GRAINS FOR ELIMINATION OF OIL CONTAMINATION OR FOR SEALING OF WELLS - The present invention provides for the use of discrete or agglomerated sand grains provided completely or partially with a coating consisting of wax as an oil binder for elimination of oil contamination. | 06-06-2013 |
| 20130196884 | Downhole Chemical Delivery For Oil And Gas Wells - A method of reducing the cost and environmental impact of chemicals used in hydraulic fracturing is to use a proppant that is coated with at least two chemicals, where each of those chemicals are useful in treating a well. By coating at least two chemicals onto the proppant the amounts of chemicals required to treat a well are reduced by delivering the chemicals to only the areas that require treatment. Additionally mixing issues are avoided as only a single proppant or substrate is used in the well. | 08-01-2013 |
| 20140155303 | ZERO-LEAKOFF GEL - A silicate gel composition that is useful for sealing the face of a fracture of a formation. A method of sealing a face of a fracture of a formation with the silicate gel composition and diverting an acid treatment fluid. | 06-05-2014 |
| 20160122630 | PROPPANTS - Embodiments of proppants are described herein. In one embodiment, a proppant for hydraulic fracturing includes a proppant body. The proppant body has a length (L) and an outside diameter (D), and the proppant body length (L) to the proppant body outside diameter (D) ratio (L/D) is about 0.3 to about 5.0. The proppant body includes a space frame, and the space frame includes a plurality of rigid members creating a plurality of openings allowing fluid to flow through the proppant thereby increasing permeability. In another embodiment, a proppant for hydraulic fracturing includes a substantially cylindrical proppant body with a substantially circular cross-sectional area and an internal flow path with a substantially circular cross-sectional. | 05-05-2016 |
| 20160168453 | Additive Fabrication of Proppants | 06-16-2016 |
