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| Number | Title | Issue Date |
| 7427350 | Silicone defoamer to better control hydrocarbon foam and reduce silicon content of liquid hydrocarbon products It has been discovered that crosslinked polydimethylsiloxane (PDMS) resins are useful defoamers and antifoamers for hydrocarbon-containing liquids, such as delayed coker feedstocks and feedstocks to preflash and atmospheric towers. These PDMS resins are crosslinked ... | 09/23/2008 |
| 7422064 | High performance foams for unloading gas wells Mixtures of at least one nonionic surfactants and at least one ionic surfactant together with a gas create foams to aid the removal of produced hydrocarbon fluids from gas wells and pipelines. ... | 09/09/2008 |
| 7416670 | Dual-cell mechanical flotation system with intermittent skimming It has been discovered that a mechanical flotation system (10) having only two cells (18, 20) can be nearly as efficient as one having more cells, yet provide an apparatus with a considerably smaller footprint, significantly reduced capital and operati... | 08/26/2008 |
| 7407915 | Polymer hydration method using microemulsions Long-chained polymer compounds are useful to viscosify aqueous brine fluids so that they can function as drilling fluids, completion/workover fluids, fracturing fluids, agricultural products, cleaning compounds, etc. These polymers may be hydrated with a microemulsi... | 08/05/2008 |
| 7313052 | System and methods of communicating over noisy communication channels A system and methods of transmitting information between a first location and a second location comprise transmitting a data signal and a known signal from one of the first location and the second location over a signal channel having a first noise component. A seco... | 12/25/2007 |
| 7283910 | Incremental depth measurement for real-time calculation of dip and azimuth The present invention provides a method and apparatus for logging an earth formation and acquiring subsurface information wherein a logging tool is conveyed in borehole to obtain parameters of interest. The parameters of interest obtained may be density, acoustic, m... | 10/16/2007 |
| 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 |
| 7271131 | Fluid loss control and sealing agent for drilling depleted sand formations An oil-based drilling fluid having a polymer latex capable of providing a deformable latex film on at least a portion of a subterranean sand formation has been discovered to inhibit or control fluid loss and act as a sealing agent when used to drill in sand formatio... | 09/18/2007 |
| 7185715 | Apparatus and method of controlling motion and vibration of an NMR sensor in a drilling bha A system for controlling sensor motion during a time-dependent measurement, comprising a drilling assembly having a drill bit at one end and engaged with a drill string extending to a surface location at an opposite end thereof. A sensor is disposed in the drilling ... | 03/06/2007 |
| 7161722 | Holographic printer A holographic printer is disclosed which produces an intermediate hologram H3 and uses the intermediate hologram H3 to produce a white light viewable hologram H2. ... | 01/09/2007 |
| 7145472 | Method and apparatus for high speed data dumping and communication for a down hole tool The present invention provides a high-speed communication and data link between a downhole tool and a surface computer. The present invention provides a plurality of busses inside of the downhole tool for providing multiple data paths between a down hole tool memory... | 12/05/2006 |
| 7114366 | Sensor A system for acquiring environmental information measurements. The 5 system (100) utilize a sensor, (205) a front-end circuit, (310) a loop filter (315), a switch controller (206), and a reduced-order loop control circuit to provid... | 10/03/2006 |
| 7111677 | Sand control for blanking plug and method of use A blanking plug device, system and method of use, wherein the plug device has an anchoring portion for securing the blanking plug device within a tubing string or other well conduit. In preferred embodiments, the anchoring portion comprises a locking device such as ... | 09/26/2006 |
| 7087301 | Bicomponent fibers of syndiotactic polypropylene Bicomponent fibers of syndiotactic polypropylene and ethylene-propylene random copolymer, can be prepared. The bicomponent fibers may exhibit self-crimp properties and high shrinkage characteristics. ... | 08/08/2006 |
| 7078370 | Biodegradable chelant compositions for fracturing fluid It has been discovered that biodegradable and non-toxic chelant compositions can perform multiple beneficial functions in an aqueous fracturing fluid through the chelation of ions. Some of the multiple functions include various combinations of the following: demulsi... | 07/18/2006 |
| 7063152 | Model HCCV hydrostatic closed circulation valve Devices and methods for methods for cleaning of excess cement from a production assembly as well as from the annulus surrounding the production assembly. A hydrostatic closed circulation valve (HCCV) assembly is described that is primarily actuatable between open an... | 06/20/2006 |
| 7052901 | Bacteria-based and enzyme-based mechanisms and products for viscosity reduction breaking of viscoelastic fluids It has been discovered that fluids viscosified with viscoelastic surfactants (VESs) may have their viscosities reduced (gels broken) by the direct or indirect action of a biochemical agent, such as bacteria, fungi, and/or enzymes. The biochemical agent may directly ... | 05/30/2006 |
| 7045101 | 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... | 05/16/2006 |
| 7025146 | Alternative packer setting method Fluid setting pressure is delivered to a hydraulically set well packer through an external conduit strapped to the exterior of a well workstring above the packer assembly. The continuity of the external conduit is continued past the packer assembly by following a fl... | 04/11/2006 |
| 7011219 | Erosion-resistant hydrocyclone liner Erosion-resistant liquid/liquid hydrocyclone liners, wherein the weight and cost of the liners are kept within acceptable parameters through the construction of a composite hydrocyclone liner, comprised of two or more different materials. The hydrocyclone liner incl... | 03/14/2006 |
| 6994166 | Composition and method for diversion agents for acid stimulation of subterranean formations It has been discovered that solid, particulate dicarboxylic acids are useful as diverting agents in methods for acidizing subterranean formations to improve the uniformity of the acid treatments (acid displacement) by diverting acid to intervals of relatively less p... | 02/07/2006 |
| 6978210 | Method for automated management of hydrocarbon gathering systems The invention is a method for automated management of hydrocarbon gathering systems. Measurement data is automatically collected from automated measurement and control devices that are located in a hydrocarbon production system The data that is collected is compared... | 12/20/2005 |
| 6957698 | Downhole activatable annular seal assembly Devices and methods are described for establishing an effective annular seal about between an active pressure differential device and a surrounding wellbore sidewall. In other aspects, the invention provides a means of selectively activating such a seal during drill... | 10/25/2005 |
| 6955763 | Dual-cell mechanical flotation system It has been discovered that a mechanical flotation system having only two cells can be nearly as efficient as one having more cells, yet provide an apparatus with a considerably smaller footprint, significantly reduced capital and operating costs, as well as be resi... | 10/18/2005 |
| 6923260 | Mitigation of proppant sticking in removing downhole tools It has been discovered that sticking caused by proppants used in a frac pack or gravel pack operation during hydrocarbon recovery efforts can be mitigated by placing a proppant anti-sticking fluid in a downhole space, such as an annulus adjacent a tool system or ser... | 08/02/2005 |
| 6918494 | Hydrocyclone separator packaging An arrangement of hydrocyclones, resulting in a greater density of hydrocyclones packaged in a given volume. One or more overflow extensions is secured to the overflow portions of one or more hydrocyclones to permit individual hydrocyclones to be placed into an axia... | 07/19/2005 |
| 6913081 | Combined scale inhibitor and water control treatments A combined scale inhibitor treatment and water control treatment requires fewer steps than the sum of each treatment procedure practiced separately. The control of water production simultaneously further reduces the amount of scale formed. Conventional water control... | 07/05/2005 |
| 6906150 | Heat exchanger polymerization reactors for manufacturing drag reducing agents Temperature control and efficient heat transfer are important to producing high quality polymer drag reducing agents from alpha-olefin and/or other monomers. Many polymerization reactions are exothermic, and controlling or minimizing the exotherm combined with low r... | 06/14/2005 |
| 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 |
| 6894008 | Method of increasing pH of high-density brines It has been discovered that carbonate powders and bicarbonate powders are useful to increase the pH and corrosion resistance of high-density brines, such as zinc bromide brines, without significantly reducing their densities. The carbonates and/or bicarbonates shoul... | 05/17/2005 |
| 6881793 | Polyproplylene materials and method of preparing polypropylene materials A polypropylene material is prepared from a blend of heterophasic propylene copolymers and propylene homopolymers. The material is prepared by blending the polymers while they are in a molten state, and forming a film or sheet from the polymer blend. The material ha... | 04/19/2005 |
| 6854532 | Subsea wellbore drilling system for reducing bottom hole pressure The present invention provides drilling systems for drilling subsea wellbores. The drilling system includes a tubing that passes through a sea bottom wellhead and carries a drill bit. A drilling fluid system continuously supplies drilling fluid into the tubing, whic... | 02/15/2005 |
| 6846561 | Bicomponent fibers of isotactic and syndiotactic polypropylene Bicomponent fibers of isotactic polypropylene and syndiotactic polypropylene, methods of making such fibers and products made thereof are disclosed. Embodiments of the bicomponent fibers can exhibit self-crimp properties and high shrinkage characteristics. ... | 01/25/2005 |
| 6844381 | Modification of syndiotactic polypropylene with mineral oil Syndiotactic polypropylene blends having a unique set of mechanical properties may be prepared by blending syndiotactic polypropylene with a high molecular weight mineral oil, an ultra low density polyethylene, or both. The syndiotactic polypropylene blends of the p... | 01/18/2005 |
| 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 |
| 6841089 | Detoxification of onium compounds A method for reducing the toxicity of onium compounds, such as ammonium compounds and phosphonium compounds, by the use of certain additives is described. Suitable additives include, but are not necessarily limited to, carboxylic acids (e.g. naphthenic acids), sulfo... | 01/11/2005 |
| 6841592 | Waterfastness additives for aqueous jet inks Cationic mordants are described that will not significantly interact with anionic dyes in aqueous jet inks, but will form strong complexes with the dyes on the substrate as the water is absorbed and dissipated. The mordants are cationic amide salts of maleated hydro... | 01/11/2005 |
| 6787758 | Wellbores utilizing fiber optic-based sensors and operating devices This invention provides a method for controlling production operations using fiber optic devices. An optical fiber carrying fiber-optic sensors is deployed downhole to provide information about downhole conditions. Parameters related to the chemicals being used for ... | 09/07/2004 |
| 6774094 | Drag reduction using fatty acids Non-polymeric fatty acid drag reducing agents are described herein. These additives are useful to reduce drag in hydrocarbon fluids and multiphase fluids of hydrocarbon(s) and water. No injection probes or other special equipment is expected to be required to introd... | 08/10/2004 |
| 6536532 | Lock ring for pipe slip pick-up ring A selectively released well packer is set between a pair of anchor shoe assemblies. Each assembly comprises a tubular setting sleeve having finger projections meshed with an anchor shoe cage. Wicker shoes are confined by the shoe cage. The packer seal and... | 03/25/2003 |
