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| Number | Title | Issue Date |
| 8124673 | Low-viscosity drag reducer Low-viscosity drag reducers, systems for delivering low-viscosity drag reducers, and methods of making low-viscosity drag reducers are disclosed. The low-viscosity drag reducers have a viscosity less than 350 cP at a shear rate of 250 sec−1 and a temper... | 02/28/2012 |
| 8106114 | Drag reducing agent and method of use The present invention relates to a drag reducing agent, composition, compound, product, process and method of use for use in petroleum pipelines and the like. A preferred embodiment of the present invention provides a cryogenically-ground polyalphaolefin polymer at ... | 01/31/2012 |
| 8022118 | Drag reduction of asphaltenic crude oils A system for reducing pressure drop associated with the turbulent flow of asphaltenic crude oil through a conduit. The crude oil has a high asphaltene content and/or a low API gravity. Such reduction in pressure drop is achieved by treating the asphaltenic crude oil... | 09/20/2011 |
| 7939584 | Bi-or multi-modal particle size distribution to improve drag reduction polymer dissolution Drag reduction of hydrocarbon fluids flowing through pipelines of various lengths is improved by polyolefin drag reducer dispersions or dispersions using bi- or multi-modal particle size distributions. Drag reducers having larger particle sizes dissolve more slowly ... | 05/10/2011 |
| 7888407 | Disperse non-polyalphaolefin drag reducing polymers A drag reducing composition comprising at least one non-polyalphaolefin polymer having an average particle size in the range of from about 5 to about 800 micrometers. The non-polyalphaolefin polymer can initially be formed via emulsion polymerization. The initial po... | 02/15/2011 |
| 7884144 | Hydrate inhibited latex flow improver A process in which a mixture is agitated in a substantially oxygen-free environment to produce an agitated emulsion. The mixture comprises water, one or more surfactants, a hydrate inhibitor, and a monomer. The monomer is then polymerized in the emulsion using an in... | 02/08/2011 |
| 7842738 | High polymer content hybrid drag reducers A drag reducing composition comprising particles of at least two different drag reducing polymers. The different drag reducing polymers can be formed by different processes, such as bulk polymerization or emulsion polymerization, and the particles of the different d... | 11/30/2010 |
| 7763671 | Modified latex drag reducer and processes therefor and therewith A modified latex drag reducer and methods of making and using the drag reducer in order to reduce friction losses resulting from turbulent fluid flow through a conduit. Particularly, the modified latex drag reducer is formed from an initial latex which is a product ... | 07/27/2010 |
| 7592379 | Oil-based dispersing method of drag reduction polymers An oil-based suspension-dispersion system of drag reduction polymers and the method for preparing same, characterized in adding 0.001-0.1 wt % of ultraviolet absorber and 0.001-0.1 wt % of bactericide into 50-90 wt % of vegetable oil and then mixing the obtained mix... | 09/22/2009 |
| 7468402 | Polymeric nanoemulsion as drag reducer for multiphase flow Polymeric nanoemulsions facilitate flow and reduce drag and friction in multiphase pipelines containing both oil and water (e.g., oil/water, oil/water/gas, oil/water/solids, and oil/water/gas/solids) such as are used for oil or gas production, gathering, and transmi... | 12/23/2008 |
| 7388046 | Self-dispersing waxes as polymer suspension aids Polymer particles of ultrahigh molecular weight poly(alpha-olefins) may be made stable toward agglomeration by suspension within a co-suspension of self-dispersing waxes. This combination prevents polymer agglomeration over time while maintaining good flowability pr... | 06/17/2008 |
| 7323529 | Method of making copolymers containing olefinic type monomers Copolymers containing residues of at least one olefinic monomer and a method of making such copolymers including the steps of: (a) providing a pressurized stirred tank; (b) feeding monomer compositions to one or more stirred tank reactors, ... | 01/29/2008 |
| 7285582 | Modified latex drag reducer and processes therefor and therewith A modified latex drag reducer and methods of making and using the drag reducer in order to reduce friction losses resulting from turbulent fluid flow through a conduit. Particularly, the modified latex drag reducer is formed from an initial latex which is a product ... | 10/23/2007 |
| 7271205 | Non-cryogenic process for granulating polymer drag reducing agents A method for producing a particulate polymer drag reducing agent, comprising granulating a bulk polymer DRA having an average size of greater than about 100 mm in the presence of a liquid wetting agent to form a granulated polymer DRA having an average size of from ... | 09/18/2007 |
| 7258428 | Multiple head concentric encapsulation system A multi-headed ink-jet system adapted to eject encapsulated liquids is provided, which includes a plurality of concentric piezoelectric members. Each concentric piezoelectric member has a chamber configured to carry a liquid therethrough, and each concentric piezoel... | 08/21/2007 |
| 7256224 | Stabilized polymer drag reducing agent slurries A method for producing a stabilized polymer drag reducing agent slurry comprising combining a fatty acid wax and a liquid carrier to form a dispersion; pre-treating the dispersion by heating to partially dissolve the fatty acid wax in the liquid carrier; and adding ... | 08/14/2007 |
| 7205262 | Friction reducing composition and method Water soluble nonionic friction reducers and added to coacervate gels having excellent shear viscosities and other properties. A preferred gel comprises poly diallyl dimethyl ammonium chloride, a lesser amount of sodium lauryl sulfonate, and lauryl alcohol. Excellen... | 04/17/2007 |
| 7134315 | Pulse radar level sensing gauge An improved pulse radar level sensing gauge for insertion into a storage or processing tank includes a housing; a probe cover comprising a sealing flange; and a probe for sensing electrical and mechanical properties, positioned at least partly below the sealing flan... | 11/14/2006 |
| 7135440 | Method 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 |
| 7119132 | Continuous neat polymerization and ambient grinding methods of polyolefin drag reducing agents A process for continuously producing a polymer drag reducing agent (DRA) is described. The process concerns mixing a monomer and a catalyst in at least one continuously stirred tank reactor (CSTR) to form a mixture. The mixture is continuously injected into a volume... | 10/10/2006 |
| 7064079 | Method of removing polymer and apparatus for doing the same A method of removing polymer adhered to a sidewall of an etched metal layer formed on a substrate, includes (a) dissolving the polymer by providing chemicals onto a surface of the substrate, and (b) rinsing the chemicals out of the substrate by providing pure water ... | 06/20/2006 |
| 7026385 | Clay-containing mixture or blend capable of forming a moisture resistant gel, and use of that mixture and blend The invention relates to a clay-containing mixture or blend capable of forming a moisture resistant gel, which comprises a powdered or ground smectite and/or a smectite-containing natural rock and at least 0.8–10% by weight, calculated for the smectite content, of... | 04/11/2006 |
| 7015290 | Method of preparing a polymer under predetermined temperature conditions, and apparatus therefor A method of preparing a polymer under predetermined temperature conditions comprises conducting the polymerization within a closed reaction chamber configured such that most or all of an inner surface has heat exchange capability. The chamber's dimensions are such t... | 03/21/2006 |
| 7012046 | Drag reducing agent slurries having alfol alcohols and processes for forming drag reducing agent slurries having alfol alcohols A composition including a polyalphaolefin and at least one alfol alcohol that function as drag reducing agent slurries and a process for the preparation of the drag reducing agent slurries are disclosed. The process includes contacting alpha olefin monomers with a c... | 03/14/2006 |
| 6972275 | Oil-in-oil emulsion lubricants for enhanced lubrication Novel oil-in-oil emulsions and methods of lubrication using the same are provided. The lubricants are stable emulsions of carrier fluid and high viscosity fluid that display superior properties related to lubricating film thickness and reduced shear strength. ... | 12/06/2005 |
| 6948264 | Non-clogging sole for article of footwear The present invention teaches an article of footwear having a non-clogging for use on natural grass and also artificial turf surfaces. A preferred sole can include protrusions comprising a hydrophobic material having a wettability index equal to or greater than 90 d... | 09/27/2005 |
| 6946500 | Non-cryogenic process for grinding polyolefin drag reducing agents A process for producing fine particulate polymer drag reducing agent (DRA) without cryogenic temperatures, is described. The grinding or pulverizing of polymer, such as poly(alpha-olefin) may be achieved by the use of at least one solid organic grinding aid and at l... | 09/20/2005 |
| 6939902 | Drag-reducing polymer suspensions A hydrocarbon-soluble drag-reducing suspension is described, along with a process for manufacturing the drag-reducing suspension. The drag-reducing suspension is easily transportable, non-hazardous, easily handled, and provides a significant increase in drag-reducin... | 09/06/2005 |
| 6894088 | Process for homogenizing polyolefin drag reducing agents A process for producing polymer drag reducing agent (DRA) slurries without cryogenic temperatures or conventional grinding is described. The homogenizing or size reduction of polymer, such as poly(alpha-olefins), may be achieved by the use of granulated polymer and ... | 05/17/2005 |
| 6841593 | Microencapsulated and macroencapsulated drag reducing agents High concentration drag reducing agents may be prepared by microencapsulating and/or macroencapsulating polymer drag reducing agent. The encapsulation may be performed prior to, during, or after the polymerization of monomer into effective drag reducing polymer. If ... | 01/11/2005 |
| 6649670 | Continuous neat polymerization and ambient grinding methods of polyolefin drag reducing agents A process for continuously producing a polymer drag reducing agent (DRA) is described. The process concerns mixing a monomer and a catalyst in at least one continuously stirred tank reactor (CSTR) to form a mixture. The mixture is continuously injected in... | 11/18/2003 |
| 6596832 | Polymer compositions useful as flow improvers in cold fluids A drag-reducing polymer capable of dissolving even in cold fluids is described, along with a method for manufacturing said drag-reducing polymer. The drag-reducing polymer has at least one alpha-olefin monomer with between a four and nine carbon chain len... | 07/22/2003 |
| 6576732 | Drag-reducing polymers and drag-reducing polymer suspensions and solutions A drag-reducing polymer is described, along with a method for manufacturing the drag-reducing polymer. The drag-reducing polymer is manufactured by bulk polymerizing a vinyl aromatic with an -olefin, wherein the -olefin has a carbon chain le... | 06/10/2003 |
| 6160036 | Microencapsulated drag reducing agents High concentration drag reducing agents may be prepared by microencapsulating polymer drag reducing agent. The microencapsulation may be performed prior to, during, or after the polymerization of monomer into effective drag reducing polymer. If encapsulat... | 12/12/2000 |
| 5853894 | Laboratory vessel having hydrophobic coating and process for manufacturing same Laboratory vessels are coated on an operational surface thereof with a hydrophobic coating polymer or reactive monomer to form a coating having an exposed surface populated with 30% by area or more terminal trifluoromethyl groups. Laboratory vessels coate... | 12/29/1998 |
| 5571314 | Formulation and preparation of a gel system for the promotion of rapid solvation in aqueous systems A thixotropic slurry is used as a drag reducing agent for water borne vess. The slurry comprises a polymer, a carrier, a surfactant and a dispersant. The slurry is buffered against changes in pH which can be the cause of separation of the constituents du... | 11/05/1996 |
| 5554214 | Water ablative coating for vehicle drag reduction A exterior hull coating with drag reducing qualities for use on waterborne vehicles. The coating comprises a water-soluble polymer of high molecular weight in a vehicle, and a diluent, and contains a swelling deferent agent, driers, and pigments. The coat... | 09/10/1996 |
| 5552456 | Drag reducing rapid solvating slurry concentrate and preparation The invention relates to a gel used as a drag reducing slurry. The slurry stored aboard a vessel and is pumped into the region of laminar flow adjacent the vessel to reduce drag. The slurry is a thixotropic media composed of a surfactant coating the indi... | 09/03/1996 |
| 5488076 | Water ablative coating for drag reduction applications A paint for application to the exterior surface of waterborne vehicles indes a high molecular weight water soluble polymer with drag reducing properties which time releases into the fluid boundary layer immediately adjacent the vehicle surface to reduce ... | 01/30/1996 |
| 5480928 | Preparation of stable dispersions of ethylene oxide polymers A process for producing a stable dispersion of ethylene oxide polymer which comprises contacting (a) a slurry of granular ethylene oxide polymer in a first inert normally-liquid hydrocarbon diluent, with (b) a second inert, normally-liquid organic diluent... | 01/02/1996 |
