Patents Examined by John Fitzgerald
  • Patent number: 11519887
    Abstract: An analysis assistance method includes setting pressure in a first BPR to a value higher than a prescribed second set value with pressure in a second BPR set to a second set value, instructing a supercritical fluid chromatograph to supply a mobile phase to a supply flow path at a flow rate of the mobile phase that is to be theoretically supplied to a first flow path when the mobile phase is supplied to the supply flow path at a prescribed total flow rate and a prescribed sample introduction ratio, and gradually decreasing a set value of the pressure in the first BPR, and detecting a set value of the pressure in the first BPR at the time when supply of the mobile phase to a second flow path is stopped due to a decrease in set value of the pressure in the first BPR, as a first set value.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: December 6, 2022
    Assignee: SHIMADZU CORPORATION
    Inventor: Yuka Fujito
  • Patent number: 11519767
    Abstract: A flow measurement assembly that includes a production string and a flow meter fluidically coupled to the production string. The flow meter includes a variable Venturi tube attached to and configured to flow production fluid received from the production string. The variable Venturi tube includes an end fixed to the production string and at least one Venturi throat. The flow meter also includes an actuator configured to move the variable Venturi tube with respect to the fixed end. The flow meter includes a processor communicatively coupled sensors coupled to the variable Venturi tube. The processor determines, based on a first fluid parameter and the second fluid parameter received from the sensors, at least one of a mass flow rate of the production fluid, a density of the production fluid, a viscosity of the production fluid, or a coefficient of discharge of the production fluid.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: December 6, 2022
    Assignee: Saudi Arabian Oil Company
    Inventors: Sakethraman Mahalingam, Muhammad Arsalan
  • Patent number: 11512996
    Abstract: The present application discloses a flow speed detection circuit and a related chip and flow meter. The flow speed detection circuit includes: a transmitter, configured to provide a front signal and a main signal to a first transducer, wherein the first transducer transforms the front signal and the main signal into a transduced signal to a second transducer, the second transducer transforms the transduced signal into a receiving front signal and a receiving main signal to a receiver; and the receiver includes: a front signal detection circuit, configured to enable the main signal processing circuit after the receiving front signal; and the main signal processing circuit, configured to determine the flow speed based on the receiving main signal after being enabled.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: November 29, 2022
    Assignee: SHENZHEN GOODIX TECHNOLOGY CO., LTD.
    Inventor: Jung-Yu Chang
  • Patent number: 11506651
    Abstract: Provided in the present invention a method for evaluating the mixing effect of a CO2 oil-displacing and mixing agent, characterized in measuring the volume expansion of a CO2-oil interface when pressure is gradually increased, drawing a mixed-phase percentage-pressure curve (?-P curve), and evaluating the mixing effect of the CO2 oil-displacing and mixing agent by means of comparing the characteristics of the ?-P curve. Further provided in the present invention is a method for initially screening a CO2 oil-displacing and mixing agent.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: November 22, 2022
    Assignee: Peking University
    Inventors: Jianbin Huang, Cheng Ma, Kaerdun Liu, Yun Yan, Zhiyang Zhu
  • Patent number: 11506640
    Abstract: Obtaining sufficient suppression effect of channel diffusion and stably transferring solution are made possible even in a piping having an extremely small inner diameter used for an analysis apparatus such as an HPLC. A piping device for an analysis apparatus includes a piping equipped with a folded shape that suppresses inner channel diffusion, and a member directly or indirectly in contact with the piping from at least one side to support the piping to suppress deformation of the folded shape.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: November 22, 2022
    Assignee: SHIMADZU CORPORATION
    Inventors: Kengo Aoki, Masahide Gunji
  • Patent number: 11504648
    Abstract: Techniques for monitoring a well clean-up process are disclosed. In one embodiment, a method includes routing a multiphase fluid having oil and water to a separator of a well testing apparatus, separating the multiphase fluid into separate fluids via the separator, and routing the separated fluids away from the separator. The method also includes measuring flow rates of oil and water leaving the separator and determining individual flow rates of oil and water entering the separator as part of the multiphase fluid based on the measured flow rates of oil and water leaving the separator. Additional systems, methods, and devices are also disclosed.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: November 22, 2022
    Assignee: Schlumberger Technology Corporation
    Inventors: Francis Allouche, Elena Borisova
  • Patent number: 11499900
    Abstract: A densitometer in the present disclosure comprises a piston attached to an end of a tube of the densitometer to reduce pressure dependence of density estimates of a sample fluid. The densitometer measures sample fluid density by vibrating the tube containing sample fluid and measuring the resonant frequency of the tube, then estimating the sample fluid density based on this resonant frequency. The piston is designed with a predetermined diameter that converts pressure inside the tube to tension in the tube. This tension produces an opposite effect on the resonant frequency of the tube to that caused by the fluid pressure itself and thereby reduces pressure dependence of the sample fluid density estimates.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: November 15, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Michel Joseph LeBlanc, Christopher Michael Jones
  • Patent number: 11499422
    Abstract: A method for evaluating a gas well productivity with eliminating an influence of liquid loading includes steps of: collecting basic data of a liquid loading gas well; according to a relative density of natural gas, a formation depth, and a casing pressure during a productivity test, determining a pressure generated by a static gas column in an annular space between a casing and a tubing from a well head to a bottomhole of the gas well, and obtaining a bottomhole pressure without liquid loading; according to a pseudo-pressure of a formation pore pressure, pseudo-pressures of the bottomhole pressure respectively under the conditions of liquid loading and no liquid loading, and a production rate under the condition of liquid loading, determining a production rate without liquid loading, and determining an absolute open flow rate with eliminating the influence of liquid loading.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: November 15, 2022
    Assignee: Exploration & Production Research Institute of SINOPEC North-China Oil & Gas Company
    Inventors: Huanquan Sun, Faqi He, Yongyi Zhou, Xiaobo Liu, Yongming He, Linsong Liu, Kui Chen, Tongsheng Cao, Yaonan Yu, Yan Chen
  • Patent number: 11499947
    Abstract: A sample introduction device 10 includes a tube holding section 21 and a sample removing mechanism 40. The sample removing mechanism 40 removes a sample 6 in a sample tube 2 held by the tube holding section 21. Thus, in the sample introduction device 10, the sample 6 in the sample tube 2 held by the tube holding section 21 can be automatically removed. As a result, the operator no longer needs to perform an operation of taking out the sample 6 from the sample tube 2. Thus, a work load on the operator can be reduced.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: November 15, 2022
    Assignee: SHIMADZU CORPORATION
    Inventors: Isao Sawamura, Akira Aono
  • Patent number: 11499902
    Abstract: A force sensing probe (100) for sensing snap-in and/or pull-off force of a liquid droplet (111) brought into and/or separated from contact with a hydrophobic sample surface (151), respectively, comprises: a sensing tip (101); a sensor element (102) connected to the sensing tip, capable of sensing sub-micronewton forces acting on the sensing tip in a measurement direction; and a droplet holding plate (104) having a first main surface (105) and a hydrophilic second main surface (106) connected via a peripheral edge surface (107), and being attached via the first main surface to the sensing tip (101) perpendicularly relative to the measurement direction for receiving and holding a liquid droplet (111) as attached to the second main surface; the droplet holding plate comprising an electrically conductive surface layer (115), the first and the second main surfaces and the peripheral edge surface being defined by the surface layer.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: November 15, 2022
    Assignee: Aalto University Foundation sr
    Inventors: Quan Zhou, Robin Ras, Ville Liimatainen, Maja Vuckovac
  • Patent number: 11492894
    Abstract: A support arm can be positioned in an inner area of a tubular body. The support arm can extend from the inner surface of the tubular body to retain a sensor in flow from a wellbore blowout passing through the tubular body.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 8, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Arash Haghshenas, Andrew John Cuthbert
  • Patent number: 11492897
    Abstract: A method, a system, tools for use by the system, and an interpretation method for injecting and detecting tracers and conducting flow characterizing of a petroleum well are disclosed. The method describes monitoring of travel time and slip velocity between two/three different phases (oil/water and possibly gas) in the well. The travel time and slip velocity are determined using an injection too for injection of an over pressurized injection of the partitioning tracers each of which would follow certain phase. The tracers are detected by an optical detection probe in the pipe. The slip velocity is obtained from the difference of travel time of two tracers which partition to two different phases.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: November 8, 2022
    Assignee: RESMAN AS
    Inventors: Anton Kulyakhtin, Christian Andresen, Thomas Sperle
  • Patent number: 11492901
    Abstract: A shale shaker system. The system includes a fluid transport pipe configured to receive a stream of drill cuttings and fluid returns from a wellbore during a drilling operation; an analysis module configured to receive at least a portion of the stream of drill cuttings and fluid returns at an inlet; a cuttings chute configured to receive at least a portion of the stream of drill cuttings and fluid returns from an outlet of the container, and deliver them to a screen box; and one or more screens for filtering drill cuttings from the fluid returns. The analysis module comprises logging sensors configured to operate while drill cuttings are moving through the system. The logging sensors communicate with a processor to determine characteristics of the drill cuttings in real time. A method for analyzing drill cuttings at a well site is also provided.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: November 8, 2022
    Inventor: Ahmed M. H. ElGamal
  • Patent number: 11493417
    Abstract: A method for determining a measurement error caused by a filling error, in particular the presence of gas bubbles, during measurement of the density of a liquid by means of a densimeter having a flexural resonator containing the liquid to be measured. During a measuring operation, a period duration of an oscillation of the flexural resonator induced by an induction unit is measured by a measuring device and the density of the liquid is determined by an evaluation unit.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: November 8, 2022
    Assignee: ERALYTICS GMBH
    Inventor: Niklas Christensson
  • Patent number: 11493402
    Abstract: A pressure sensor for an evaporated fuel leak detector includes a sensor unit, a case, and a sealing resin. The sensor unit has a pressure receiving portion, a plurality of conduction terminals, and a mold resin portion. The case has a fluid flow path and a housing recess. Each remaining inner wall surface of the housing recess except for an inner wall surface on the conduction terminal side is provided with an inclined surface and a vertical surface, in a cross section along an axial direction perpendicular to a pressure receiving surface of the sensor unit. The inclined surface is inclined inward as toward a pressure receiving side. The vertical surface extends from the end of the inclined surface on the pressure receiving side to define a filling gap in which the sealing resin is filled between the side surface of the mold resin portion and the vertical surface.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: November 8, 2022
    Assignee: DENSO CORPORATION
    Inventors: Ryoyuu Kishi, Yasuo Katoh, Tomohiro Itoh
  • Patent number: 11493485
    Abstract: A sample injection device (100) includes a tubular suction and discharge unit (23) configured to suction a liquid sample (S), contain the sample therein, and discharge the suctioned sample, and at least a portion of an inner wall (23a) of the suction and discharge unit, the portion having the sample contained therewithin, is subjected to a surface treatment (V) to increase an interfacial tension (F) that acts between the inner wall and the sample.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: November 8, 2022
    Assignee: SHIMADZU CORPORATION
    Inventor: Yuki Komori
  • Patent number: 11486853
    Abstract: A gas sensor includes a sensor element, an inner protective cover including a first member and a second member, and an outer protective cover having outer inlets. The inner protective cover has a sensor element chamber inside. The outer protective cover and the inner protective cover form an inlet-side gas flow channel from an outside to the sensor element chamber. The inlet-side gas flow channel has a first flow channel extending in an upward direction from the outer inlets and a second flow channel extending in a downward direction. A ratio W2/W1 between a flow channel width W1 of the first flow channel and a flow channel width W2 of the second flow channel is less than one. A tip end portion of the outer protective cover has a tapered portion that reduces in diameter toward a bottom portion of the tip end portion.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: November 1, 2022
    Assignee: NGK INSULATORS, LTD.
    Inventors: Fumiya Takahashi, Takeshi Omori
  • Patent number: 11486871
    Abstract: A method includes determining reservoir rock and fluid characteristics of a reservoir rock and, based on the reservoir rock and fluid characteristics of the reservoir rock, selecting a core. The method also includes selecting a first surfactant and selecting a second surfactant. In addition, the method includes performing a water block mitigation test using the selected core, the first surfactant and the second surfactant and performing a proppant phase trapping mitigation test using the selected core, the first surfactant and the second surfactant.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: November 1, 2022
    Assignee: ALCHEMY SCIENCES, INC.
    Inventors: Luchao Jin, Shashidhar Rajagopalan, James Russum
  • Patent number: 11486691
    Abstract: A method, system, and computer-readable medium related to control of mud motors in drilling systems, of which the method includes measuring an eccentricity of rotation of a rotor in a stator of a mud motor using a rotor-position sensor, determining a torque of the mud motor based in part on the eccentricity, and selecting a fluid flow rate, a pressure, or both of fluid delivered downhole, through the mud motor, based in part on the determined torque.
    Type: Grant
    Filed: April 12, 2019
    Date of Patent: November 1, 2022
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Samba Ba, Maxim Pushkarev, Anton Kolyshkin
  • Patent number: 11480053
    Abstract: A method for analyzing a drilling fluid receiving a drilling fluid sample from a flow of the drilling fluid at a surface of a borehole being drilled in a subterranean formation and extracting, using a gas extraction and sampling system, a dissolved gas from the drilling fluid sample. The method includes determining, using a gas chromatograph, a concentration over time of at least one chemical species of a dissolved gas from the drilling fluid sample and generating an area per concentration curve based on the concentration over time. The method includes determining, using a gas extraction and sampling system, at least one concentration value of the at least one chemical species of the dissolved gas from the drilling fluid sample and correcting bias caused by the gas extraction and sampling system, wherein correcting the bias comprises modifying the at least one concentration value based on the area per concentration curve.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: October 25, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Mathew Dennis Rowe