Patents by Inventor Weijun Guo

Weijun Guo 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).

  • Patent number: 10753193
    Abstract: Methods and systems including establishing a wellbore heterogeneity profiling factor (HPF), establishing a cement quality curve representing a volumetric void space of a completion profile, and comparing the wellbore HPF and the cement quality curve, thereby determining a cement volumetric void space in a wellbore at a target depth having the completion profile.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: August 25, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yike Hu, Weijun Guo
  • Publication number: 20200237897
    Abstract: The present disclosure relates to a foot-and-mouth disease virus vaccine composition, especially a recombinant bivalent vaccine composition against type O and type A foot-and-mouth disease viruses. The present disclosure further relates to a method for preparing the foot-and-mouth disease virus vaccine composition, and a use of the foot-and-mouth disease virus vaccine composition in preparing medicines for preventing and/or controlling foot-and-mouth disease in animals.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 30, 2020
    Inventors: Haixue ZHENG, Fan YANG, Zixiang ZHU, Weijun CAO, Hong TIAN, Keshan ZHANG, Dan LI, Ye JIN, Jianhong GUO, Jijun HE, Xuepeng CAI, Xiangtao LIU
  • Publication number: 20200199995
    Abstract: A system and method for evaluating integrity of cement in a wellbore with multiple casing strings. The system and method may include at least one source that can emit a field of photons, and at least one photon detector spaced away from the source by a first distance that configures the tool to measure cement integrity in a first annulus, by a portion of the source photons being scattered back to the first detector which can produce photon count rates based on energy levels of received photons. Integrity of cement in the first annulus can be determined by the photon count rates. A second detector spaced a second distance from the source can be included and can measure cement integrity in a second annulus that is radially outside the first annulus by producing photon count rates for photons received from the second annulus.
    Type: Application
    Filed: March 10, 2017
    Publication date: June 25, 2020
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Yike HU, Weijun GUO
  • Publication number: 20200191993
    Abstract: The disclosure provides methods of measuring an intrinsic CO ratio in a geological formation by disposing, proximate the formation, a petrophysical tool including at least one gamma-ray detector, reading a carbon gamma-ray peak for the geological formation and an oxygen gamma-ray peak for the geological formation, determining a measured CO ratio of the geological formation from the carbon gamma-ray peak and the oxygen gamma-ray peak, and correcting the measured CO ratio by applying a corrective algorithm specific for the petrophysical tool or the type of petrophysical tool to obtain an intrinsic CO ratio of the geological formation. The corrective algorithm is derived by a mathematical analysis of measured CO ratios of a sample with a known intrinsic CO ratio using the same petrophysical tool or a petrophysical tool representative of a same type of petrophysical tool. Additional methods and systems using this method are provided.
    Type: Application
    Filed: July 5, 2018
    Publication date: June 18, 2020
    Applicant: Saudi Arabian Oil Company
    Inventors: Shouxiang Mark Ma, Nacer Guergueb, Weijun Guo
  • Patent number: 10677040
    Abstract: A method for material evaluation may include detecting photons from gamma ray interactions with material in an annular region between a geological formation and a casing. An energy spectrum is generated from the detected photons. A difference between materials may then be detected based on a comparison of the generated energy spectrum with a reference spectrum for a known material (e.g., good cement, known fluid).
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: June 9, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yike Hu, Weijun Guo
  • Patent number: 10634811
    Abstract: The disclosed embodiments include downhole neutron generators and methods to utilize downhole neutron generators in a downhole environment. In one embodiment, a downhole neutron generator includes a heating element to dissipate heat to a first transition metal, which heats up the first transition metal and facilitates the first transition metal to absorb deuterium and tritium gases flowing proximate said transition metal. The downhole neutron generator also includes a second transition metal separated from the target foil, where the second transition metal is doped with of deuterium and the tritium ions, and a laser to direct optical pulses onto a surface of the first transition metal to produce deuterium and the tritium ions from the absorbed deuterium and tritium, where said ions traverse through a back surface of the first transition metal to the second transition metal to interact with the doped deuterium and the tritium ions to initiate fusion reaction.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: April 28, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Juan Navarro Sorroche, Weijun Guo
  • Patent number: 10619833
    Abstract: This present invention provides a Curved LED tubular lamp, comprising a Curved lamp tube as mentioned above, wherein the first straight tube has a first inner wall and a first outer wall opposite to the first inner wall along the longitudinal axis of the first straight tube, and the second straight tube has a second inner wall and a second outer wall opposite to the second inner wall along the longitudinal axis of the second straight tube, and the rear supporter has a third inner wall and a third outer wall opposite to the third inner wall along the axis of the rear supporter, whereby the first inner wall, the third inner wall and the second inner wall is defined as an inner area, and the first outer wall, the third outer wall and the second outer wall is defined as an outer area; a LED light board installed on the inner area of the Curved lamp tube; two lamp caps respectively capped on the front ends of the first straight tube and the second straight tube, and connected with each other by a first front suppo
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: April 14, 2020
    Inventors: Wentao Yao, Weijun Zhu, Zhaosong Lin, Zhi Guo
  • Publication number: 20200109626
    Abstract: The disclosure provides a well integrity monitoring tool for a wellbore, a method, using a nuclear tool and an EM tool, for well integrity monitoring of a wellbore having a multi-pipe configuration, and a well integrity monitoring system. In one example, the method includes: operating a nuclear tool in the wellbore to make a nuclear measurement at a depth of the wellbore, operating an EM tool in the wellbore to make an EM measurement at the depth of the wellbore, determining a plurality of piping properties of the multi-pipe configuration at the depth employing the EM measurement, determining, employing the piping properties, a processed nuclear measurement from the nuclear measurement, and employing the processed nuclear measurement to determine an integrity of a well material at the depth and within an annulus defined by the multi-pipe configuration.
    Type: Application
    Filed: May 15, 2018
    Publication date: April 9, 2020
    Inventors: Yike Hu, Weijun Guo, Burkay Donderici
  • Patent number: 10605954
    Abstract: A method may comprise providing a wellbore penetrating a subterranean formation, the wellbore being lined with a pipe and having a cement between the pipe and the wellbore, wherein the cement contains a defect; providing a control spectrum of gamma radiation count rates as a function of energy for a control, wherein the control comprises the cement without the defect; emitting gamma rays into the pipe and the cement having the defect from a source of a nuclear tool disposed in the wellbore; detecting count rates of gamma radiation scattered back from the pipe and the cement having the defect with a detector of the nuclear tool as a function of energy to produce a sample spectrum; and deriving one or more physical attributes related to the defect based on a comparison of the sample spectrum and the control spectrum.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: March 31, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yike Hu, Weijun Guo
  • Patent number: 10551523
    Abstract: Methods including taking a gamma spectrum from a wellbore at a target depth, wherein the wellbore penetrates a subterranean formation and has a completion profile comprising a pipe and an annulus between the pipe and the subterranean formation; determining a cement volumetric void space in the wellbore at the target depth; establishing a cement-void-spatial calibration curve based on obtained gamma spectra representing cement spatial void space locations in the annulus of the completion profile, wherein each cement volumetric void space amount in the wellbore has a characteristic cement-void-spatial calibration curve; comparing the wellbore gamma spectrum and the cement-void-spatial calibration curve; and determining a location of the cement volumetric void space in the wellbore at the target depth.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: February 4, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yike Hu, Weijun Guo
  • Patent number: 10539414
    Abstract: A method for monitoring tubing wall thickness includes conveying a tool through a tubular string in a borehole, the tool including a photon source that directs a photon beam along a radial path toward a wall of the borehole, the tool further including an array of collimated detectors that measure Compton backscattering rates at respective distance bins along the radial path. The method further includes calculating a sequence of ratios between measurements from neighboring detectors. The method further includes identifying one or more local extrema in the sequence, each extremum representing a boundary between different materials. The method further includes determining a wall thickness of the tubular string from absolute or relative positions of the one or more extrema. The method further includes displaying a representation of the wall thickness.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: January 21, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Dongwon Lee, Weijun Guo
  • Patent number: 10502861
    Abstract: A neutron generator includes a gas control interface and a vacuum chamber coupled to the gas control interface. The neutron generator also includes a target rod disposed within the vacuum chamber and having a longitudinal axis aligned with a central axis of the vacuum chamber, and further including a target disposed on a surface of the target rod facing the getter. The neutron generator also includes a planar ion source adjacent to the gas control interface and disposed between the target and the gas control interface. The planar ion source includes an array grid that is offset from the target and generally perpendicular to the longitudinal axis of the target rod.
    Type: Grant
    Filed: March 27, 2019
    Date of Patent: December 10, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Juan Navarro-Sorroche, Weijun Guo
  • Patent number: 10495524
    Abstract: A fiber optic distributed sensing system for installation within a wellbore is provided. The system includes a first set of downhole sensors having one or more nuclear sensors with nuclear field sensitivity. The system additionally includes, a second set of downhole sensors having one or more ElectroMagnetic (EM) sensors with electromagnetic field sensitivity. The fiber optic distributed sensing system also includes a processor system configured to receive data measurements from the first and second sets of sensors and configured to conjointly process the data measurements into representations of physical attributes of the wellbore.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: December 3, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Burkay Donderici, Aixa Maria Rivera-Rios, Weijun Guo
  • Patent number: 10480306
    Abstract: Various embodiments include apparatus and methods to conduct neutron-neutron measurements and to evaluate quality of cement between a casing and a formation. A tool can include a neutron source, a far detector, and a near detector, where the far detector and the near detector detect neutrons in response to activation of the neutron source. Measured counts of the detected neutrons can be compared with respect to expected counts of neutrons. From one or more comparisons, the quality of the cement can be evaluated. Additional apparatus, systems, and methods are disclosed.
    Type: Grant
    Filed: December 30, 2013
    Date of Patent: November 19, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Weijun Guo, Daniel F. Dorffer
  • Patent number: 10459112
    Abstract: A system and method to determine a characteristic of a wellbore based on count rates of scattered photons. The system and method can include determining at least one characteristic of a material surrounding a wellbore by, emitting photons from a photon source at a location in the wellbore, detecting, via one or more detectors, photons scattered by the material, counting the scattered photons based on an energy level, producing count rates of the detected photons for various energy ranges, and calculating a value of the characteristic based on the count rates. The material can be at least one of mud, mud cake, and earth formation.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 29, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yike Hu, Weijun Guo
  • Patent number: 10455684
    Abstract: Described herein are neutron generators that employ direct field ionization of ionizable fusion gases, as well as well-logging tools and methods that utilize such neutron generators. In various embodiments, the neutron generator includes a cylindrical field-ionization structure distributed around the inner surface of a tubular housing, and a cylindrical ion-accelerating grid disposed about the longitudinal axis concentrically to the field-ionization structure. Ions generated by the field-ionization structure may accumulate inside the ion-accelerating grid, from which they can be axially extracted and accelerated towards a fusion target. Additional tools, systems, and methods are disclosed.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: October 22, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Juan Navarro-Sorroche, Weijun Guo
  • Patent number: 10438713
    Abstract: An accelerator neutron source (ANS) including a field ionization (FI) array configured to generate deuterium and tritium ions and a plasma for containing the deuterium and tritium ions produced by the FI array. The ANS also includes a target comprising deuterium and tritium ions and the ANS is configured to accelerate deuterium and tritium ions produced by the FI array toward the target to generate neutrons by applying a voltage to an accelerating electrode.
    Type: Grant
    Filed: November 16, 2015
    Date of Patent: October 8, 2019
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Juan Navarro-Sorroche, Weijun Guo
  • Patent number: 10408968
    Abstract: A well logging tool includes a neutron generator having an ion source cathode comprising a nano-structure field emission (FE) array for producing a charged particle current routed through an ionizable gas, thus generating ions by electron impact ionization of the gas. The nanostructures can be provided by bundles of silicon nanotips grown on a substrate. The FE array can be provided on an axially facing substrate located co-axially in an elongate housing, with the charged particle current directed from the centrally located FE array to a co-axial annular anode and having axial and radial directional components.
    Type: Grant
    Filed: December 31, 2013
    Date of Patent: September 10, 2019
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventors: Juan Navarro-Sorroche, Weijun Guo
  • Patent number: 10408441
    Abstract: A curved LED tubular lamp is disclosed. The curved LED tubular lamp includes a curved lamp tube having two straight segments and a curve segment disposed between the two straight segments; at least one flexible substrate having a plurality of LEDs mounted thereon, and at least one positioning pillar formed on the inner surface of the curve segment of the curved lamp tube, wherein each of the two straight segments and the curve segment have LEDs disposed therein, and wherein the flexible substrate is disposed in at least the curve segment.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: September 10, 2019
    Assignees: Zhejiang Super Lighting Electric, Appliance Co., Ltd.
    Inventors: Wentao Yao, Weijun Zhu, Zhaosong Lin, Zhi Guo
  • Publication number: 20190264900
    Abstract: A curved LED tubular lamp is disclosed. The curved LED tubular lamp includes a curved lamp tube having two straight segments and a curve segment disposed between the two straight segments; at least one flexible substrate having a plurality of LEDs mounted thereon, and at least one positioning pillar formed on the inner surface of the curve segment of the curved lamp tube, wherein each of the two straight segments and the curve segment have LEDs disposed therein, and wherein the flexible substrate is disposed in at least the curve segment.
    Type: Application
    Filed: May 7, 2019
    Publication date: August 29, 2019
    Inventors: WENTAO YAO, WEIJUN ZHU, ZHAOSONG LIN, ZHI GUO