1981results about "Treatment using complexing/solubilising chemicals" patented technology

According to one embodiment, a system comprises one or more counters; comparison logic; and one or more hardware processors communicatively coupled to the one or more counters and the comparison logic. The one or more hardware processors are configured to instantiate one or more virtual machines that are adapted to analyze received content, where the one or more virtual machines are configured to monitor a delay caused by one or more events conducted during processing of the content and identify the content as including malware if the delay exceed a first time period.

Improved methods and compositions for consolidating proppant in fractures formed in subterranean zones are provided. An improvement of this invention comprises using proppant particles having a coating of hardenable resin including a gel breaker. The gel breaker facilitates removal of gelled carrier fluid from the surface of the proppant particles.

According to one embodiment, a system comprises one or more counters; comparison logic; and one or more hardware processors communicatively coupled to the one or more counters and the comparison logic. The one or more hardware processors are configured to instantiate one or more virtual machines that are adapted to analyze received content, where the one or more virtual machines are configured to monitor a delay caused by one or more events conducted during processing of the content and identify the content as including malware if the delay exceed a first time period.

A sub picture element electrode directly connected to a thin film transistor is disposed between a floating sub picture element electrode capacitively coupled to a control electrode and a gate bus line in order to prevent injection of electric charges from the gate bus line to the floating sub picture element electrode. Moreover, a shield pattern electrically connected to an auxiliary capacitance bus line is formed between the floating sub picture element electrode and a data bus line. This shield pattern avoids injection of electric charges from the data bus line to the floating sub picture element electrode.

The present invention relates to increasing the permeability of a subterranean formation by forming a resinous mass having conductive channels through which fluids can be produced in the formation. Some embodiments of the present invention provide methods of creating a permeable resinous mass comprising the steps of selecting an interval along a well bore; providing a resin slurry comprising an acid curable resin, filler, and degradable material; placing the resin slurry into the selected interval; and, activating the acid curable resin using an activator wherein the activation causes the acid curable resin to substantially cure, the degradable material to substantially degrade, and forms the permeable resinous mass.

Modified polysaccharide polymers for use as anti-scalant and dispersant. The polymers are useful in compositions used in aqueous systems. The modified polysaccharides are also useful in detergent formulations, water treatment, dispersants and oilfield applications and as fiberglass binders. Such applications include a modified polysaccharide having up to about 70 mole % carboxyl groups per mole of polysaccharide ASU and up to about 20 mole % aldehyde groups per mole of polysaccharide ASU. The applications can also include a blend of modified polysaccharides and other synthetic polymers.

The present invention discloses a desalination plant that operates with a sea water or brackish water feed and produces a concentrated and selectively improved salt reject stream and a pure water permeate stream from a first treatment section that is arranged to produce primarily water at high recovery using membrane desalination processes. The reject stream from the first treatment line has a component distribution that is substantially reduced in native di- and polyvalent scaling ions, essentially depleted of sulfate, has substantially higher total dissolved solids than a traditional sea water reverse osmosis reject, yet is suitable for thermal treatment processes. The system may be enhanced by monovalent salt components. The unit may be integrated with a second treatment section, in which the first reject stream is further concentrated, purified, and processed to produce a high purity salt product.

A method for treating a recirculating water system which comprises introducing into said water system a multifunctional, multilayer tablet, wherein the multilayer tablet comprises a fast dissolving layer and a slow dissolving layer, wherein said fast dissolving layer releases a combination of active ingredients including a member selected from the group consisting of lithium hypochlorite, calcium hypochlorite, trichloroisocyanuric acid (TCCA), anhydrous sodium dichloroisocyanurate, sodium persulfate, potassium persulfate, potassium monopersulfate, sodium monopersulfate, and mixtures thereof, and at least one of a clarifier, chelating agent, sequesterant, algaestat, water softener, algaecide, corrosion inhibitor, scale inhibitor, flocculent, disintegrant, dispersant, colorant, dissolution control agent, fragrance, or surfactant and, wherein said slow dissolving layer includes a member selected from the group consisting of trichloroisocyanuric acid (TCCA), calcium hypochlorite, 1,3-dichloro-5,5-dimethylhydantoin (DCDMH), 1,3-dibromo-5,5-dimethylhydantoin (DBDMH), 1-bromo-3-chloro-5,5-dimethylhydantoin (BCDMH), 1,3-dichloro-5-ethyl-5-methylhydantoin (DCEMH), 1,3-dibromo-5-ethyl-5-methylhydantoin (DBEMH), 1-bromo-3-chloro-5-methyl-5-ethylhydantoin (BCEMH), and mixtures thereof, and at least one of a clarifier, chelating agent, sequesterant, algaestat, water softener, algaecide, corrosion inhibitor, scale inhibitor, flocculent, disintegrant, dispersant, colorant, dissolution control agent or surfactant.

An aqueous slurry composition for use in industries such as the petroleum and pipeline industries includes a particulate, an aqueous liquid and a chemical compound that renders the particulate surface extremely hydrophobic. The slurry is produced by rendering the surface of the particulate extremely hydrophobic during or before making the slurry.

The present invention provides methods for fracturing and for reducing the production of both water and particulates from subterranean formations. The methods are particularly useful in conjunction with subterranean formations surrounding wellbores and fractures. The methods comprise the steps of applying to a subterranean formation gelled fluid that contains a gelling agent and a water resistant polymer, applying aqueous surfactant fluid, applying a low-viscosity consolidating fluid, and applying an after-flush fluid, and (in some embodiments) a crosslinked gel fluid.

A desalination plant for treating a sea water or brackish water feed is provided. The desalination plant includes a first treatment section to effectively remove scaling species, the first treatment section including nanofiltration section, the nanofiltration section including at least two stages and at least two passes; and a reverse osmosis section that operates at high recovery to produce a purified permeate stream and a selectively NaCl salt-enriched reject stream as a saline output.

The present invention relates to improved methods for completing well bores along producing zones while controlling formation sands and increasing surface area available for production. Some embodiments of the methods of the present invention provide methods of controlling the migration of formation sand in a well bore and increasing surface area for well production comprising the steps of hydrajetting at least one slot into a zone along a well bore; and, placing a consolidation material comprising particulates into the slot.

The present invention provides methods for fracturing and for reducing the production of both water and particulates from subterranean formations. The methods are particularly useful in conjunction with subterranean formations surrounding wellbores and fractures. The methods comprise the steps of applying to a subterranean formation gelled fluid that contains a gelling agent and a water resistant polymer, applying aqueous surfactant fluid, applying a low-viscosity consolidating fluid, and applying an after-flush fluid, and (in some embodiments) a crosslinked gel fluid.

Methods of creating a stable slurry of coated particulates wherein the slurry is capable of being stored for at least 2 hours before use comprising the steps of: providing resin coated particulates wherein the resin comprises a resin that does not completely cure unless it is at least one of exposed to a temperature above about 175° F. or exposed to an external catalyst; and, substantially suspending the resin coated particulates in a servicing fluid to create a stable resin coated particulate slurry. Methods of creating a stable slurry of coated particulates wherein the slurry is capable of being stored for at least 2 hours before use comprising the steps of: providing tackifier coated particulates; and, substantially suspending the tackifier coated particulates in a servicing fluid to create a tackifier coated particulate slurry.

A well treatment additive includes a siloxane surfactant, a solvent and an aqueous phase. The solvent is preferably a terpene hydrocarbon. Also disclosed is a method for using the well treatment additive to form and enhance the properties of terpene solvent based additives useful for the treatment of oil and gas wells. Methods of using the novel well treatment additives include using the additives in a variety of well treatment processes including, but not limited to, acidizing operations, hydraulic fracturing operations, well remediation operations and water removal operations.

Improved methods and compositions for consolidating proppant in fractures formed in subterranean zones are provided. An improvement of this invention comprises using proppant particles having a coating of hardenable resin including a gel breaker. The gel breaker facilitates removal of gelled carrier fluid from the surface of the proppant particles.

A cleaning and biocidal composition in liquid form comprising a solvent, a polymeric biguanide, a single quaternary ammonium salt, a sequestrant, and at least one surfactant. The composition comprising the solvent including water, the polymeric biguanide including a polyhexamethylene biguanide hydrochloride, the quaternary ammonium salt including a didecyldimethyl ammonium chloride, the sequestrant including an amino acid chelating agent selected from the group consisting of: ethylenediaminetetraacetic acid, nitrilotriacetic acid, tetrasodium ethylenediaminetetraacetic acid, or mixtures thereof, the surfactant including a non-ionic surfactant and an amphoteric surfactant.

Compositions, methods and kits for purifying and clarifying and / or nutrifying contaminated drinking water and which comprise a primary coagulant material and a bridging flocculent material, the levels and ratios of coagulant to flocculent preferably falling within certain ranges. Highly preferred compositions also contain one or more of a cationic coagulant aid, especially chitosan, a microbiocidal disinfectant, a water-soluble alkali, a water-insoluble silicate, and a food additive or nutrient source.

Compositions, methods and kits for purifying, clarifying nutrifying and any combination thereof, contaminated drinking water, which contain a primary coagulant material and a bridging flocculent material. The levels and ratios of coagulant to flocculent preferably fall within certain ranges. Highly preferred compositions also contain one or more of a cationic coagulant aid, especially chitosan, a microbiocidal disinfectant, a water-soluble alkali, a water-insoluble silicate, and a food additive or nutrient source.

The present invention discloses a method for preparing heteroatom doped carbon quantum dot, and application thereof in fields of biomedicine, catalysts, photoelectric devices, etc. The various kinds of heteroatom doped carbon quantum dots are obtained by using a conjugated polymer as a precursor and through a process of high temperature carbonization. These carbon quantum dots contain one or more heteroatoms selected from the group consisting of N, S, Si, Se, P, As, Ge, Gd, B, Sb and Te, the absorption spectrum of which ranges from 300 to 850 nm, and the fluorescence emission wavelength of which is within a range of 350 to 1000 nm. The carbon quantum dot has a broad application prospect in serving as a new type photosensitizer, preparing drugs for photodynamic therapy of cancer and sterilization, photocatalytic degradation of organic pollutants, photocatalytic water-splitting for hydrogen generation, organic polymer solar cell and quantum dot-sensitized solar cell.

The present invention includes a method of treating a hydrocarbon-bearing clastic formation having non-connate water, the method includes contacting the hydrocarbon-bearing clastic formation with a composition that includes a solvent and a surfactant wherein the solvent at least partially displaces or solubilizes the water in the formation.

Methods comprising: providing a treatment fluid that comprises a base fluid and a least a plurality of coated particulates, the coated particulates having been treated with a surface modification agent and coated with a hydrolysable coating; placing the treatment fluid into a subterranean formation via a well bore. Also provided are methods comprising: treating a particulate with a surface modification agent; coating the particulate with a hydrolysable coating that has an initial degradation rate to produce a coated particulate; placing the particulate in a subterranean formation; and allowing the hydrolysable coating to degrade at a second degradation rate that is slower than its initial degradation rate.

The disclosure encompasses composition, method and apparatus that provide improved and convenient removal of biofilm from surfaces. Surfaces cleaned according to the invention comprise the inner wall of conduits such as those employed in dental clinics, food and pharmaceutical manufacturing.

A portable water treatment system and apparatus is disclosed that can effectively and efficiently treat aqueous fluids by quickly and reliably adjusting and controlling the free residual level of disinfectants, contaminants or additives through the addition of one or more treating agents such as oxidizing chemicals and / or other special-purpose additives, and that can continuously store, log, retrieve and report the related fluid composition data and other operating parameters on a real-time basis at either the use site or a remote location. A preferred use for the subject system and apparatus is managing the chemistry of disinfectant, contaminant and / or additive levels in aqueous fluids used in hydraulic fracturing operations, and controlling the free residual levels of the disinfectant or contaminants within the fluids, including fluids maintained in frac tanks during temporary cessation of a hydraulic fracturing operation.

The invention belongs to the environmental protection field, concretely relating to a green environmental-protection composite corrosion inhibition antifouling agent for water circulating cooling, compounded of antifouling dispersants and corrosion inhibitors: polyepoxy sodium succinate, polymerized sodium aspartate, hydrolyzed polymaleic anhydride, sodium gluconate, zinc salt, in the mass ratio of 1-6 to 1-4 to 2-6 to 1-2 to 1-2. And it has characters of no phosphorus and biodegradability, an environment-friendly water quality stabilizer, used in a water-circulating cooling system to play the role in corrosion inhibition and antifouling.

A composite having a solid particulate and a surface modifying treatment agent on the solid particulate wherein the surface modifying treatment agent has a hydrophobic tail and an anchor for adhering the hydrophobic tail onto the solid particulate. The anchor may be metal and the hydrophobic tail may be an organo-silicon material, a fluorinated hydrocarbon or both an organo-silicon material and a fluorinated hydrocarbon. The composite may be used as a proppant in a hydraulic fracturing operation as well as a sand control particulate in a gravel packing operation. The presence of the surface modifying treatment agent on the surface of the solid particulate reduces the generation of fines and dust as well as the migration of sand during a hydraulic fracturing operation or a sand control operation. The presence of the surface modifying treatment agent on the surface of the solid particulate further enhances the crush resistance of the solid particulate.

The present invention provides a process for removing arsenic from ground water to be processed and used in remote dwellings. The process includes (a) contacting a clay, a coagulant, and an oxidizer with water containing arsenic to form a coagulated colloidal mixture; (b) adsorbing the arsenic onto the coagulated colloidal mixture; and (c) separating the water from the coagulated colloidal mixture. The invention also provides a composition ready for use in removing arsenic from ground water to be used in remote areas. The composition includes an activated clay, a coagulant, and an oxidizer in predetermined proportions for efficient removal of arsenic from ground water.

A composition for treating a hard surface. The composition has: (a) at least one adhesion promoter; (b) at least one surfactant selected from the group consisting of: anionic, non-ionic, cationic, amphoteric, zwitterionic, and combinations thereof; (c) mineral oil; (d) water; (e) optionally, at least one solvent; and wherein the composition is self-adhering upon application to a surface to be treated, and wherein the composition provides a wet film to said surface when water passes over said composition and surface.