Patents by Inventor Rong Xu
Rong Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20100186967Abstract: An assembly for delivery of treatment fluid at a target location downhole. The assembly is configured to avoid any substantial loss of treatment fluid in advance of reaching the target location in spite of low well pressure or a potentially excessive depth of the location. The assembly also allows for loading with treatment fluid from a downhole end thereof so as to avoid driving treatment fluid through the entirety of a tubular accommodating the assembly. The assembly may employ a spot valve to enhance filling with treatment fluid along with a backpressure valve coupled to the spot valve on-site so as to avoid premature loss of treatment fluid during a delivery application.Type: ApplicationFiled: November 30, 2009Publication date: July 29, 2010Inventors: Zheng Rong Xu, Jorge A. Lozada Pazzi, Kevin Odom
-
Publication number: 20100186949Abstract: An assembly for delivery of treatment fluid at a target location downhole. The assembly is configured to avoid any substantial loss of treatment fluid in advance of reaching the target location in spite of low well pressure or a potentially excessive depth of the location. The assembly also allows for loading with treatment fluid from a downhole end thereof so as to avoid driving treatment fluid through the entirety of a tubular accommodating the assembly. The assembly may employ a spot valve to enhance filling with treatment fluid along with a backpressure valve coupled to the spot valve on-site so as to avoid premature loss of treatment fluid during a delivery application.Type: ApplicationFiled: June 18, 2009Publication date: July 29, 2010Inventors: Zheng Rong Xu, Jorge A. Lozada Pazzi, Kevin Odom
-
Patent number: 7762172Abstract: A loading tube for installation in the body of a perforating gun is disclosed. The loading tube holds a plurality of shaped charges whose detonation is electrically initiated, and the loading tube, when installed in the body, comprises at least a portion of the electrical circuit used to initiate detonation the shaped charge. In one embodiment, the loading tube comprises the hot portion of the electrical circuit, the body comprises the ground portion of the electrical circuit and the loading tube and the body are insulated from one another. Alternatively, the loading tube may comprise two distinct portions of conductive material which are electrically isolated from one another where the two portions of conductive material comprise the hot and ground portions of the electrical circuit. Additionally, a loading tube according to the present invention may comprise a conductor which is disposed in the loading tube near the outer surface of the loading tube and which is insulated from the loading tube.Type: GrantFiled: August 23, 2006Date of Patent: July 27, 2010Assignee: Schlumberger Technology CorporationInventors: Haoming Li, Zheng Rong Xu, Chantal Smitheman, Cesar Gama, Alfredo Fayard
-
Patent number: 7735568Abstract: The present invention provides a packer cup system for use inside a wellbore comprising a packer cup and a backup component coupled thereto. In one configuration, the backup component further comprises an angled support member and a rubber ring disposed between the angled support member and the packer cup. The support member is configured to facilitate uniform expansion of the rubber ring.Type: GrantFiled: February 28, 2007Date of Patent: June 15, 2010Assignee: Schlumberger Technology CorporationInventors: Zheng Rong Xu, Chad Lucas, Richard Morrison
-
Patent number: 7735552Abstract: A packer cup for use inside a wellbore. In one embodiment, the packer cup includes a body, a support member disposed inside the body and one or more support layers disposed against an inside diameter of the support member.Type: GrantFiled: November 30, 2005Date of Patent: June 15, 2010Assignee: Schlumberger Technology CorporationInventor: Zheng Rong Xu
-
Publication number: 20100112630Abstract: A process for measuring total microbiological content in an aqueous medium includes adding a fluorescent dye to the aqueous medium, measuring the fluorescent signal in the aqueous medium to obtain a baseline fluorescent signal, releasing intracellular content of the microbiological matter into the aqueous medium by lysing the microbiological matter, measuring the fluorescent signal in the aqueous medium with the released intracellular content of the microbiological matter to obtain a second fluorescent signal, subtracting the baseline signal from the second fluorescent signal to obtain a net fluorescent signal and equating the net fluorescent signal with a microbiological content. Methods for measuring biofilm and adjusting for background noise are also provided.Type: ApplicationFiled: November 3, 2008Publication date: May 6, 2010Inventors: Scott Martell BOYETTE, Hong Cai, Paul Ronald Hirst, Yan Jin, Juan Jiang, Jie Li, Rong Xu, Kechao Yang
-
Publication number: 20100112682Abstract: A system for measuring total microbiological content in an aqueous medium by adding a fluorescent dye to the aqueous medium, measuring the fluorescent signal in the aqueous medium to obtain a baseline fluorescent signal, releasing intracellular content of the microbiological matter into the aqueous medium by lysing the microbiological matter. The system then measures the fluorescent signal in the aqueous medium with the released intracellular content of the microbiological matter to obtain a second fluorescent signal. Next, the system subtracts the baseline signal from the second fluorescent signal to obtain a net fluorescent signal and equates the net fluorescent signal with a microbiological content.Type: ApplicationFiled: May 26, 2009Publication date: May 6, 2010Applicant: GENERAL ELECTRIC COMPANYInventors: Scott M. Boyette, Hong Cai, Yan Jin, Jie Li, Kechao Yang, Rong Xu, Yu Wang
-
Publication number: 20090326211Abstract: A method of treating a liquid sample having microbiological target species therein to concentrate the species and collect lysate is disclosed. The liquid sample comprises non-target microbiological particles, inorganic particles, and microbiological target species. The liquid is passed through a prefilter medium to allow the target species to pass through as filtrate and retain non-target microbiological products and inorganic particles thereon. The filtrate is contacted with a main filtration medium adapted to retain the target species thereon as retentate. The retentate is lysed to form a lysate containing target material that was enveloped within the microbiological target species. The microbiological species may comprise cell containing or viral material. Target materials comprise intracellular nucleic acids, or in the case of viral sampling, nucleic acids encased within the protein sheath or coating of the virus.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Applicant: General Electric CompanyInventors: Scott Boyette, Rong Xu, Jing Luo, Weiqing Xu, Jing Chen, Weimin Xiao, Tong Chen
-
Publication number: 20090301713Abstract: A backpressure valve. The backpressure valve may be configured to maintain a substantially controlled pressure in coiled tubing uphole thereof while simultaneously being compatible with a pressure pulse tool downhole thereof. The backpressure valve includes pressure generating capacity below its internal valve assembly so as to avoid the tendency of the assembly to throttle open and closed. Furthermore, the pressure generation is achieved in a manner avoiding cavitation. As a result, once the backpressure valve is opened, the pressure pulse tool is able to reliably communicate with surface equipment at the oilfield.Type: ApplicationFiled: June 9, 2008Publication date: December 10, 2009Inventors: Zheng Rong Xu, Gokturk Tunc
-
Publication number: 20090301734Abstract: A backpressure valve. The backpressure valve may be configured to maintain a substantially controlled pressure in bottom hole assembly while simultaneously being compatible with a pressure pulse tool downhole thereof. The backpressure valve includes pressure generating capacity below its internal valve assembly so as to avoid the tendency of the assembly to throttle open and closed. Furthermore, the pressure generation is achieved in a manner avoiding cavitation. As a result, once the backpressure valve is opened, the pressure pulse tool is able to reliably communicate with surface equipment at the oilfield.Type: ApplicationFiled: October 17, 2008Publication date: December 10, 2009Inventors: Gokturk Tunc, Zheng Rong Xu, Patrick Schorn, Lawrence J. Leising
-
Publication number: 20090092635Abstract: The present invention is directed to a method for generating an antigen-specific immune response in a subject in general and in particular to administering a priming dose of an immunogenic composition of a recombinant mumps virus (rMuV) that encodes an antigen followed by administering a boosting dose of recombinant vesicular stomatitis virus (rVSV) encoding an antigen.Type: ApplicationFiled: August 15, 2008Publication date: April 9, 2009Applicant: WYETHInventors: David Kirkwood Clarke, Farooq Nasar, Rong Xu, Shakuntala Devi Megati, Michael Albin Egan, Amara Gbellu Luckay
-
Publication number: 20080318026Abstract: A polymer-carbon nanomaterial composite. The composite includes a polymer matrix; and plasma-modified carbon nanomaterials having surface functional groups attached thereto, wherein the carbon nanomaterial is selected from carbon nanotubes, carbon nanofibers, carbon nanoparticles, carbon black, nanodiamond, fullerenes, or combinations thereof. The invention also involves a method of making a polymer-carbon nanomaterial composite, and a method of modifying carbon nanomaterials.Type: ApplicationFiled: June 25, 2007Publication date: December 25, 2008Applicant: UNIVERSITY OF DAYTONInventors: Liming Dai, Wei Chen, Zheng Rong Xu, Frank Espinosa
-
Publication number: 20080047456Abstract: A loading tube for installation in the body of a perforating gun is disclosed. The loading tube holds a plurality of shaped charges whose detonation is electrically initiated, and the loading tube, when installed in the body, comprises at least a portion of the electrical circuit used to initiate detonation the shaped charge. In one embodiment, the loading tube comprises the hot portion of the electrical circuit, the body comprises the ground portion of the electrical circuit and the loading tube and the body are insulated from one another. Alternatively, the loading tube may comprise two distinct portions of conductive material which are electrically isolated from one another where the two portions of conductive material comprise the hot and ground portions of the electrical circuit. Additionally, a loading tube according to the present invention may comprise a conductor which is disposed in the loading tube near the outer surface of the loading tube and which is insulated from the loading tube.Type: ApplicationFiled: August 23, 2006Publication date: February 28, 2008Applicant: Schlumberger Technology CorporationInventors: Haoming Li, Zheng Rong Xu, Chantal Smitheman, Cesar Gama, Alfredo Fayard
-
Patent number: 7331581Abstract: Improved inflatable packers are provided. A packer may be constructed from hybrid structures including slat structures and weave structures. A packer may include a bladder and a cover, with a plurality of slats disposed therebetween, and/or a weave structure or anti-extrusion layer disposed therebetween. The slats may vary in width and thickness, and be provided with a plurality of reinforcement members. The reinforcement members may be longitudinally and/or transversely disposed in the slats. One or more of the various components of the packer preferably include a fiber, a wire, a cable, a nanofiber, a nanotube, and/or a nanoparticle modified elastomer. Anchors may be attached to or embedded in the outer cover. The packer may include a carcass having an end coupling including a plurality of slats. Improved packer cups are also disclosed, and preferably include a body member reinforced with a nanotube or similar material.Type: GrantFiled: March 30, 2005Date of Patent: February 19, 2008Assignee: Schlumberger Technology CorporationInventors: Zheng Rong Xu, Frank Espinosa
-
Publication number: 20070227746Abstract: The present invention provides a packer cup system for use inside a wellbore comprising a packer cup and a backup component coupled thereto. In one configuration, the backup component further comprises an angled support member and a rubber ring disposed between the angled support member and the packer cup. The support member is configured to facilitate uniform expansion of the rubber ring.Type: ApplicationFiled: February 28, 2007Publication date: October 4, 2007Inventors: Zheng Rong Xu, Chad Lucas, Richard Morrison
-
Publication number: 20070227951Abstract: A process for removing sulfur-containing compounds from fuel, said process comprising contacting the fuel in liquid phase with air to oxidise the sulfur containing compounds, said contacting being carried out in the presence of at least one transition metal oxide catalyst.Type: ApplicationFiled: May 31, 2004Publication date: October 4, 2007Inventors: Jeyagorwy Thirugnanasampanthar, Rong Xu, Frits Dautzenberg
-
Publication number: 20060248592Abstract: A tool for enforcing limited disclosure rules in a software application, typically an unmodified database. The invention enables individual queries to respect data subjects' preferences and choices by storing privacy semantics, classifying data items into categories, rewriting incoming queries to reflect stored privacy semantics, and masking prohibited values. Privacy semantics include individual data subject choices and privacy policies comprise rules describing authorized data recipients and authorized data access purposes. Privacy policies may require specific consent from data subjects. The invention assigns each (purpose, recipient) pair a view over each database table, so entire tuples and individual cells can have particular privacy semantics. Purposes and recipients are inferred based on the application issuing the query. Masking is performed at the individual cell level, and may employ NULL or other predetermined indicia for prohibited values.Type: ApplicationFiled: April 28, 2005Publication date: November 2, 2006Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: RAKESH AGRAWAL, GERALD KIERNAN, KRISTEN LEFEVRE, RAMAKRISHNAN SRIKANT, YI RONG XU
-
Patent number: 6915848Abstract: A method and apparatus for internal data conveyance within a well from the surface to a downhole tool or apparatus and for returning downhole tool data to the surface, without necessitating the provision of control cables and other conventional conductors within the well. One embodiment involves sending telemetry elements such as tagged drop balls or a fluid having specific chemical characteristics from surface to a downhole tool as a form of telemetry. The telemetry element or elements are provided with identification and instruction data, which may be in the form of data tags, such as RF tags or a detectable chemical constituent. The downhole tool or apparatus is provided with a detector and microcomputer and is capable of recognizing the telemetry element and communicating with it or carrying out instructions that are provided in the telemetry data thereof.Type: GrantFiled: July 30, 2002Date of Patent: July 12, 2005Assignee: Schlumberger Technology CorporationInventors: Hubertus V. Thomeer, Zheng Rong Xu, Sarmad Adnan, Michael H. Kenison
-
Publication number: 20040194970Abstract: An apparatus, system, and method useful for providing a seal with a surface includes a seal assembly having a seal body constructed at least partially of elastomeric material and at least one shape memory alloy (SMA) wire. The SMA wire is capable of encouraging at least part of the seal body into engagement with the surface.Type: ApplicationFiled: April 7, 2003Publication date: October 7, 2004Inventors: William Donald Eatwell, Zheng Rong Xu
-
Publication number: 20040020643Abstract: A method and apparatus for internal data conveyance within a well from the surface to a downhole tool or apparatus and for returning downhole tool data to the surface, without necessitating the provision of control cables and other conventional conductors within the well. One embodiment involves sending telemetry elements such as tagged drop balls or a fluid having specific chemical characteristics from surface to a downhole tool as a form of telemetry. The telemetry element or elements are provided with identification and instruction data, which may be in the form of data tags, such as RF tags or a detectable chemical constituent. The downhole tool or apparatus is provided with a detector and microcomputer and is capable of recognizing the telemetry element and communicating with it or carrying out instructions that are provided in the telemetry data thereof.Type: ApplicationFiled: July 30, 2002Publication date: February 5, 2004Inventors: Hubertus V. Thomeer, Zheng Rong Xu, Sarmad Adnan, Michael H. Kenison