Using Well Logging Device Patents (Class 324/303)
  • Patent number: 11175430
    Abstract: Systems and methods of the present disclosure relate to processing nuclear magnetic resonance (NMR) data. An NMR downhole tool may include a housing, magnets disposed within the housing, an antenna extending along a circumference of the housing, and an information handling system configured to receive NMR signals via the antenna, wherein the NMR signals are based on an operating frequency, a static magnetic field B0, and a radio frequency (RF) field B1, which are defined by the antenna and the magnets. The information handling system may be further configured to project the NMR signals to a forward modeling space, and transmit vectors resulting from projecting the NMR signals to the forward modeling space.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: November 16, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Wei Shao, Songhua Chen
  • Patent number: 11143781
    Abstract: An electromagnet model or models are created to generate the static and radio frequency magnetic fields of an NMR downhole logging tool. The magnetic field distributions are then used in spin dynamics (SD) simulations to model the impacts of various effects on NMR logging data, effects that cannot be accurately describe by theoretical formulation alone. The accuracy of the electromagnetic model and the SD simulation may be verified against experimental observations or trial logging runs. Simulation of electronic circuit, molecular diffusion, tool motion can all be incorporated in the SD simulation. The NMR data inversion process can be modified according to echoes obtained from SD simulation to obtain more accurate petrophysical parameters.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: October 12, 2021
    Inventors: Lilong Li, Songhua Chen, Mark Cheiron Butler
  • Patent number: 11143782
    Abstract: An apparatus for performing a downhole nuclear magnetic resonance (NMR) experiment on a subsurface material in a volume of interest includes: a carrier configured to be conveyed through a borehole penetrating the subsurface material; an NMR sensor assembly disposed on the carrier and comprising a static magnetic field source configured to polarize nuclei of the subsurface material in the volume of interest and an antenna configured to receive NMR signals; and a receiver circuit disposed on the NMR sensor assembly and configured to process received NMR signals to perform the downhole NMR experiment; wherein (i) the receiver circuit is disposed in a pressure-excluding enclosure and (ii) the antenna, the static magnetic field source, and the pressure-excluding enclosure are disposed in a pressure-balancing fluid that is at least partially enclosed by an enclosure of non-metallic material.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: October 12, 2021
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Quming Zhou, Marc Stephen Ramirez
  • Patent number: 11131186
    Abstract: A method for rapid wettability evaluation during exploratory drilling of a hydrocarbon. The method include pre-saturation of the sample by a brine, measuring the bulk brine's T2 NMR relaxation parameter, expelling the brine by oil in the sample, measuring the oil's bulk and pore T2 NMR relaxation parameter, measuring the brine's non-reducible content and T2 NMR relaxation parameter of water in the presence of dominant oil content, expelling the oil by the brine and measuring the T2 NMR relaxation parameter of the irreducible oil content in the dominant brine. The measurements are combined in the index: I=[(T2WB?T2WIOIRR)/T2WB]?[(T2OB?T2OIWIRR)/T2OB], where WB is water bulk, OB is oil bulk, WIOIRR—injected pore water at the irreducible oil content, OIWIRR—injected pore oil at the irreducible water content.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: September 28, 2021
    Assignee: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS
    Inventors: Karem Al-Garadi, Ammar El-Husseiny, Mohamed Mahmoud, Mahmoud Elsayed
  • Patent number: 11125903
    Abstract: A method and system for nuclear magnetic resonance (NMR) sequence for partially polarized echo trains is provided. An NMR pulse sequence is applied into a wellbore penetrating a subterranean formation using a NMR tool. The NMR pulse sequence includes a first cycle and a second cycle. The first cycle includes a first sequence of radio frequency (RF) pulses of a first duration and a first trainlet sequence of a second duration different from the first duration. The second cycle includes a second sequence of RF pulses of the first duration and a second trainlet sequence of the second duration. The second sequence of RF pulses forms a phase alternated pair with the first sequence of RF pulses. Echo signals corresponding to a substance in the subterranean formation are measured based on the NMR pulse sequence. A distribution of a characteristic of the substance is determined based on the echo signals.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: September 21, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Lilong Li
  • Patent number: 11112525
    Abstract: Nuclear magnetic resonance (NMR) well logs are obtained from a well in the reservoir measures of the total fluid, including both water and hydrocarbon, in the shale of the reservoir. NMR measurement at the surface of shale subsurface samples obtained in the form of drill cuttings or core samples from the same well provide measures of total water content of the shale. At the surface, pressure on the subsurface sample becomes that of atmospheric pressure, and hydrocarbon gas contained in the shale cuttings bleeds off. The remaining fluid within the shale cuttings is then only water, which can be measured using NMR techniques. Compensation for the effect of drilling fluids (drilling mud) on the NMR measures from the fluid cuttings is also performed. The hydrocarbon gas content of the formation shale can be determined from the difference between formation NMR well log readings and NMR measurements from subsurface sample.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: September 7, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Jinhong Chen, Stacey M Althaus, Daniel T Georgi, Hui-Hai Liu
  • Patent number: 11086044
    Abstract: A shale oil analysis method and apparatus for continuously characterizing saturation of adsorbed oil and free oil, comprising: obtain NMR T2 spectrum, NMR porosity, oil saturation and wettability indexes of a core samples, determine a lower limit value for the saturation calculation of the absorbed oil based on the NMR T2 spectrum, the NMR porosity, the oil saturation and wettability indices; determining a lower limit value for the saturation calculation of the free oil according to the bulk relaxation T2 spectrum of the crude oil of the well interval or an adjacent well interval and the NMR T2 spectrum of the core samples; calculating the saturation of the absorbed oil and the free oil, and analyzing the shale oil in the well interval to be analyzed. The solution realizes the quantitative and continuous characterization of the adsorbed oil and the free oil of the shale oil via well logs.
    Type: Grant
    Filed: December 30, 2019
    Date of Patent: August 10, 2021
    Assignee: PETROCHINA COMPANY LIMITED
    Inventors: Dongming Zhi, Lichun Kuang, Xiaojun Wang, Zhongchun Sun, Zhijun Qin, Wei Wang, Ni Zhang, Xinjun Mao, Min Ouyang, Qiusheng Chang
  • Patent number: 11073633
    Abstract: An NMR system includes a radio frequency (RF) NMR application-specific integrated circuit (ASIC) chip configured to generate an RF output signal and a rectifier configured to receive the RF output signal and convert the RF output signal to (a) a direct current (DC) pulsed field gradient (PFG) signal or (b) a DC trigger signal for at least one of (i) activating at least one component of an NMR system external to the NMR RF ASIC chip and (ii) synchronizing at least one component of an NMR system external to the NMR RF ASIC chip.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: July 27, 2021
    Assignee: Schlumberger Technology Corporation
    Inventors: Yi-Qiao Song, Soumyajit Mandal, Yiqiao Tang, David McCowan
  • Patent number: 11073634
    Abstract: A material for constructing a drill collar is selected based on a cost and a minimum thickness for a cross-sectional area of material that satisfies a structural constraint. An interior volume of the drill collar houses one or more downhole nuclear magnetic resonance (NMR) components based on its minimum thickness. A central magnet coupled to a booster magnetic element disposed in the interior volume. A first end magnet and a second end magnet are positioned in the interior volume proximate respective axial sides of the booster magnetic element, and an antenna assembly is positioned proximate to the interior volume, between the respective axial sides of the magnetic assembly and about at least a portion of the central magnet.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: July 27, 2021
    Assignee: HALLIBURTON ENERGY SERVICES, INC.
    Inventor: Arcady Reiderman
  • Patent number: 11069063
    Abstract: The disclosure provides a system for noise analysis. The system may acquire a plurality of signals of a subject, and determine a signal representation of the subject based on the plurality of signals. The system may determine an updated signal representation of the subject by adding a signal disturbance into the plurality of signals. The system may further determine a value of a noise parameter indicative of a signal level of the plurality of signals relative to noise of the plurality of signals based on the signal representation and the updated signal representation of the subject.
    Type: Grant
    Filed: December 26, 2019
    Date of Patent: July 20, 2021
    Assignee: UIH AMERICA, INC.
    Inventor: Yongquan Ye
  • Patent number: 11060398
    Abstract: A method may comprise disposing a nuclear magnetic resonance logging tool into a wellbore, identifying an upper limit of an amplitude for tool motion, identifying a frequency range based at least in part on the upper limit of the amplitude for tool motion, measuring the one or more frequencies from the echo train, and performing a frequency-domain processing of the one or more frequencies to suppress distortions in an echo train. A system may comprise a nuclear magnetic resonance logging tool and an information handling system. The nuclear magnetic resonance logging tool may further comprise an electromagnetic transmitter configured to emit a magnetic field, a radio frequency transmitter configured to transmit a pulse and one or more refocusing pulses, and a receiver configured to detect one or more frequencies from an echo train.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: July 13, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Mark C. Butler, Rebecca Corina Jachmann
  • Patent number: 11054540
    Abstract: Nuclear magnetic resonance (NMR) well logs are obtained from a well in the reservoir measures of the total fluid, including both water and hydrocarbon, in the shale of the reservoir. NMR measurement at the surface of shale subsurface samples obtained in the form of drill cuttings or core samples from the same well provide measures of total water content of the shale. At the surface, pressure on the subsurface sample becomes that of atmospheric pressure, and hydrocarbon gas contained in the shale cuttings bleeds off. The remaining fluid within the shale cuttings is then only water, which can be measured using NMR techniques. Compensation for the effect of drilling fluids (drilling mud) on the NMR measures from the fluid cuttings is also performed. The hydrocarbon gas content of the formation shale can be determined from the difference between formation NMR well log readings and NMR measurements from subsurface sample.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: July 6, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Jinhong Chen, Stacey M Althaus, Daniel T Georgi, Hui-Hai Liu
  • Patent number: 11048014
    Abstract: A nuclear magnetic resonance (NMR) logging tool configured to be positioned in a borehole created in a subsurface formation. The NMR logging tool includes a magnet to induce a magnetic field in the subsurface formation, a transmission line, and a first shield positioned between the magnet and the transmission line. The NMR logging tool includes a transmitter and an antenna coupled to the transmitter by the transmission line. The antenna is to transmit a radio frequency (RF) magnetic field into the subsurface formation in response to the transmitter supplying power by the transmission line.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: June 29, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jie Yang, Lilong Li
  • Patent number: 11035977
    Abstract: Nuclear magnetic resonance (NMR) well logs are obtained from a well in the reservoir measures of the total fluid, including both water and hydrocarbon, in the shale of the reservoir. NMR measurement at the surface of shale subsurface samples obtained in the form of drill cuttings or core samples from the same well provide measures of total water content of the shale. At the surface, pressure on the subsurface sample becomes that of atmospheric pressure, and hydrocarbon gas contained in the shale cuttings bleeds off. The remaining fluid within the shale cuttings is then only water, which can be measured using NMR techniques. Compensation for the effect of drilling fluids (drilling mud) on the NMR measures from the fluid cuttings is also performed. The hydrocarbon gas content of the formation shale can be determined from the difference between formation NMR well log readings and NMR measurements from subsurface sample.
    Type: Grant
    Filed: December 17, 2019
    Date of Patent: June 15, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Jinhong Chen, Stacey M Althaus, Daniel T Georgi, Hui-Hai Liu
  • Patent number: 11009621
    Abstract: A wireline or logging while drilling device includes: a first coil configured to vary the intensity of a main magnetic field so as to produce phase modulation of signals emitted by spins in a sensitive volume; and a second coil configured to excite the spins in the sensitive volume in an inverse ratio of gyromagnetic constants of the spins; and receive signals from the spins displaced in frequency from the Larmor frequency of the spins by the phase modulation produced by the first coil.
    Type: Grant
    Filed: September 18, 2019
    Date of Patent: May 18, 2021
    Assignee: WOLLIN VENTURES, INC.
    Inventor: Ernest Wollin
  • Patent number: 10997705
    Abstract: A method is described for ways to generate a Fraction of Sand (Fsand) estimate and net-to-gross (NTG) estimate of sand in a formation using a machine-learning algorithm such as a neural network based on borehole image logs. The method may use the Fsand and other information to estimate hydrocarbons in place in a subsurface formation. The method may be executed by a computer system.
    Type: Grant
    Filed: October 15, 2019
    Date of Patent: May 4, 2021
    Assignee: Chevron U.S.A. Inc.
    Inventors: Bo Gong, Dustin J. Keele, Emmanuel Toumelin, Simon Clinch
  • Patent number: 10983077
    Abstract: A method for monitoring the oleophilic fluid to aqueous fluid ratio of a drilling fluid includes selecting a sample of the drilling fluid that has been recirculated, measuring the NMR response of the sample of the drilling fluid and determining the oleophilic fluid to aqueous fluid ratio of the drilling fluid based at least in part on the NMR response.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: April 20, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Songhua Chen, Magdalena Traico Sandor, Cato Russell McDaniel, Jason Glen Bell, William W. Shumway
  • Patent number: 10969353
    Abstract: The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for determining a permeability of a rock sample. One method includes measuring a first set of Nuclear Magnetic Resonance (NMR) relaxation times for the rock sample saturated with regular water (H2O); injecting heavy water (D2O) into the rock sample; measuring a second set of NMR relaxation times for the rock sample after injecting D2O; calculating a pore connectivity factor based on the first set of NMR relaxation times and the second set of NMR relaxation times; and calculating the permeability of the rock sample based on the pore connectivity factor.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: April 6, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Hyung Tae Kwak, Ahmad Mubarak Al-Harbi
  • Patent number: 10969352
    Abstract: The present disclosure describes methods and systems, including computer-implemented methods, computer program products, and computer systems, for determining a permeability of a rock sample. One method includes measuring a first set of Nuclear Magnetic Resonance (NMR) relaxation times for the rock sample saturated with regular water (H2O); injecting heavy water (D2O) into the rock sample; measuring a second set of NMR relaxation times for the rock sample after injecting D2O; calculating a pore connectivity factor based on the first set of NMR relaxation times and the second set of NMR relaxation times; and calculating the permeability of the rock sample based on the pore connectivity factor.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: April 6, 2021
    Assignee: Saudi Arabian Oil Company
    Inventors: Hyung Tae Kwak, Ahmad Mubarak Al-Harbi
  • Patent number: 10962675
    Abstract: Exemplary implementations may: obtain subsurface relaxation time data specifying subsurface relaxation time values corresponding to a well in the subsurface volume of interest; generating a subsurface relaxation time distribution using the subsurface relaxation time data; generating a subsurface porosity distribution using the subsurface relaxation time distribution; generating a representation of the subsurface porosity distribution in the subsurface volume of interest using visual effects to depict at least one of the one or more subsurface relaxation time values; and display the representation.
    Type: Grant
    Filed: October 30, 2018
    Date of Patent: March 30, 2021
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Boqin Sun, Simon Clinch, Dustin J. Keele, Byron Dean Gulick
  • Patent number: 10962674
    Abstract: Illustrative embodiments are directed to applying a nuclear magnetic resonance sequence to a substance within an inhomogeneous static magnetic field. Various embodiments include applying a series of refocusing pulses to the substance, each refocusing pulse in the series of refocusing pulses having at least two segments, and a total pulse duration less than or equal to approximately 1.414 times T180. Various embodiments can further include applying an excitation pulse to the substance in the inhomogeneous static magnetic field, where the excitation pulse generates an initial magnetization that is aligned with a refocusing axis produced by a refocusing cycle that is performed after the excitation pulse.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: March 30, 2021
    Assignee: Schlumberger Technology Corporation
    Inventors: Martin D. Hürlimann, Soumyajit Mandal, Van Mai Do, Yi-Qiao Song
  • Patent number: 10961848
    Abstract: NMR tools are described having unidirectional magnetization throughout the magnet assembly. An antenna assembly is positioned around the magnet assembly in order to excite a volume in the surrounding subterranean formation. A layer of soft magnetic core material is positioned under the antenna assembly in order to shield all or most of the RF field generated by the RF antenna away from the conductive components inside the NMR tool. The conductive components may be conductive structural members or a conductive magnet assembly. The soft magnetic core material also shapes the static magnetic field by smoothing out the longitudinal magnetic field variation.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: March 30, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Lilong Li, Songhua Chen, Arcady Reiderman
  • Patent number: 10955581
    Abstract: A method of evaluating a subterranean formation includes conveying a tool along a borehole. The tool includes a transmitter that transmits a drive pulse and a receiver that receives at least one formation response to the drive pulse. The method further includes calculating a signal-to-noise ratio of the at least one formation response and comparing the signal-to-noise ratio to a programmable threshold. The method further includes determining, based on the comparing, an adjusted drive pulse to transmit and transmitting the adjusted drive pulse. The method further includes and receiving at least one formation response to the adjusted drive pulse and deriving formation data from the at least one formation response to the adjusted drive pulse. The method further includes displaying a representation of the formation based on the formation data.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: March 23, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Jason D. Dykstra, Yiming Zhao, Xingyong Song
  • Patent number: 10942289
    Abstract: A method of fabricating a ferrite for use in a resistivity logging tool includes mixing a ferrite powder with a binder to provide a mixture, and pressing the mixture into a mold to form the ferrite. The mold exhibits a specific geometry corresponding to a channel defined on an inner surface of a bobbin associated with the resistivity logging tool, and the channel is arcuate and extends at an angle offset from a central axis of the bobbin. At least one of a length, a width, and a thickness of the ferrite is then adjusted to manipulate a magnetic permeability of the ferrite in a direction of a magnetic field passing through the ferrite.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: March 9, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Matthew Chase Griffing
  • Patent number: 10921480
    Abstract: The application provides a downhole three-dimensional scanning nuclear magnetic resonance imaging logging instrument and a probe, an antenna thereof, wherein the antenna comprises: an radio frequency antenna, an orienting device and a rotating device; the radio frequency antenna is fixed on an outer surface of the orienting device, and the orienting device is arranged on a magnet, the rotating device is fixed on the magnet; the rotating device is movably connected to the orienting device; and the rotating device is configured to drive the orienting device to rotate relative to the magnet, such that the radio frequency antenna on the orienting device can be drived to rotate, and echo signals in different directions can be acquired by the radio frequency antenna. The purpose of multi-directional measurement can be achieved, and the overall properties of an undisturbed stratum can be reflected by the applicant.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: February 16, 2021
    Assignee: CHINA UNIVERSITY OF PETROLEUM-BEIJING
    Inventors: Lizhi Xiao, Guangzhi Liao, Zhe Sun, Xin Li, Sihui Luo
  • Patent number: 10907472
    Abstract: A method and system are described for imaging core samples associated with a subsurface region. The imaging results may be used to create or update a subsurface model and using the subsurface model and/or imaging results in hydrocarbon operations. The imaging techniques may include NMR imaging and CT imaging. Further, the imaging techniques may also include exposing the core sample to the imaging gas.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: February 2, 2021
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Hubert E. King, Jr., Shawn Fullmer, Antonio S. Buono, Michael Sansone, Pavel Kortunov, John H. Dunsmuir, Bo Gao, James G. Kralik, Ye Xu
  • Patent number: 10900916
    Abstract: A method for transforming an earth formation and/or a completion component for the earth formation based on estimating a parameter of the earth formation includes: performing a nuclear magnetic resonance (NMR) experiment on the earth formation, the NMR experiment includes transmitting an initial radio-frequency (RF) pulse and a series of refocusing RF pulses; detecting a truncated free induction decay (FID) signal following the initial RF pulse and a spin echo following at least one refocusing RF pulse, the truncated FID signal missing an initial part of a total FID signal; reconstructing the total FID signal using the truncated FID signal, the detected spin echo, and a calculated or measured time between end of transmitting the initial RF pulse and beginning of receiving the truncated FID signal; estimating the parameter using the total FID signal; and transforming the earth formation and/or the completion component based on the estimated property using transformation-equipment.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: January 26, 2021
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Marc Stephen Ramirez, Quming Zhou
  • Patent number: 10895659
    Abstract: Methods, devices, and systems for tracking lateral motion of a nuclear magnetic resonance (NMR) tool are disclosed. In some embodiments, a phase shift for one or more spin-echo signals received by the NMR tool is detected during a velocity measurement sequence that corresponds to at least one formation measurement sequence. A lateral velocity of the NMR tool is determined based, at least in part, on the detected phase shift.
    Type: Grant
    Filed: April 18, 2019
    Date of Patent: January 19, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Arcady Reiderman, Songhua Chen, Mark Cheiron Butler
  • Patent number: 10890686
    Abstract: A method for making a log of material properties in a plurality of beds from an instrument utilizes steps such as estimating material properties for said plurality of beds and/or estimating positions for a plurality of bed boundaries and/or estimating orientations for said plurality of bed boundaries wherein the bed boundary orientations are individually variable. The estimated positions, orientations, and/or material properties can be utilized to compute the log.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: January 12, 2021
    Inventor: Richard H. Hardman
  • Patent number: 10884082
    Abstract: A magnetic resonance imaging apparatus according to an embodiment includes a receiver array coil structured with a plurality of receiver coils. Each of the receiver coils included in the receiver array coil includes a coil element, a first tuning element configured to tune a tunable frequency of the receiver coil to a desired frequency, and a series circuit including a switching element and a second tuning element and being connected in parallel with the first tuning element. The switching element is configured to disconnect the first tuning element and the second tuning element from each other at the time of transmitting and is configured to arrange the first tuning element and the second tuning element to be electrically conductive with each other at the time of receiving. At least two receiver coils positioned adjacent to each other among the plurality of receiver coils are decoupled from each other.
    Type: Grant
    Filed: June 25, 2019
    Date of Patent: January 5, 2021
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Kazuya Okamoto
  • Patent number: 10877332
    Abstract: An electronic device may be provided with a display having a thin-film transistor layer. One or more holes in the thin-film transistor layer may be used to form pathways from display circuitry to other circuitry underneath the display. One or more conductive bridges may pass through holes in the thin-film transistor layer and may have one end that couples to the display circuitry and a second end that couples to a printed circuit underneath the display. These conductive bridges may be formed from wire bonding. Wire bond connections may be encapsulated with potting material to improve the reliability of the wire bond and increase the resiliency of the display. Display signal lines may be routed through holes in a thin-film transistor layer to run along a backside of the display thereby reducing the need for space in the border region for display circuitry.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: December 29, 2020
    Assignee: Apple Inc.
    Inventors: Paul S. Drzaic, Jeremy C. Franklin, Stephen Brian Lynch, Scott A. Myers, Benjamin M. Rappoport, Fletcher R. Rothkopf, John P. Ternus
  • Patent number: 10852260
    Abstract: The present disclosure describes methods and systems for determining source rock potential in a subterranean region of a hydrocarbon reservoir. One method includes receiving, an electron spin resonance (ESR) image from an in-situ ESR scanner that is attached to a wellbore at a first subterranean location, wherein the wellbore extends into the subterranean region of the hydrocarbon reservoir; determining, a spin concentration level of a source rock in the first subterranean location based on the ESR image; and determining, the source rock potential at the first subterranean location based on the determined spin concentration level.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: December 1, 2020
    Assignee: Saudi Arabian Oil Company
    Inventor: Sebastian Csutak
  • Patent number: 10830027
    Abstract: A system and method for evaluating kerogen-rich shale (KRS) including measuring, via scanning microscopy, electrical conductivity of a KRS sample and a mechanical property of the KRS sample.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: November 10, 2020
    Assignee: Saudi Arabian Oil Company
    Inventors: Katherine Leigh Hull, Younane N. Abousleiman, Shannon L. Eichmann, David Jacobi
  • Patent number: 10830230
    Abstract: A method for operating a linear compressor includes establishing a set of predictors, and establishing a model for an estimated head clearance of the linear compressor with the set of predictors. Coefficients of the model for the estimated head clearance of the linear compressor may also be established. The model for the estimated head clearance of the linear compressor may be used to calculate an estimated head clearance during operation of the linear compressor.
    Type: Grant
    Filed: January 4, 2017
    Date of Patent: November 10, 2020
    Assignees: Haier US Appliance Solutions, Inc., University of Louisville Research Foundation, Inc.
    Inventors: Gregory William Hahn, Srujan Kusumba, Michael Lee McIntyre, Joseph W Latham
  • Patent number: 10823809
    Abstract: A phase difference caused by eddy currents is determined for an MR system. First MR data is acquired with a first sequence by irradiating at least one RF pulse having an RF excitation pulse, importing a first test gradient during or after the RF excitation pulse, applying a read-out gradient, and acquiring the first MR data while the read-out gradient is switched, so the first MR data is acquired for at least one K-space line. Second MR data is acquired with a second sequence by importing a second test gradient during or after the RF excitation pulse, and applying the read-out gradient. The second MR data is acquired while the read-out gradient is switched, so the second MR data is acquired for the at least one K-space line. The phase difference per voxel is determined using the first MR data and the second MR data.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: November 3, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Michael Köhler, Gudrun Ruyters
  • Patent number: 10816690
    Abstract: Provided is a radio frequency antenna receiving method and device for a downhole three-dimensional scanning nuclear magnetic resonance imager. The device comprises: an array antenna for receiving an echo signal, an antenna interface circuit, a receiving and amplifying circuit for amplifying the echo signal, an analog-to-digital conversion circuit, a signal collecting circuit and a control circuit, which are sequentially connected; the array antenna comprises N antenna units, where N?4; four ports of the control circuit are respectively connected to the antenna interface circuit, the receiving and amplifying circuit, the analog-to-digital conversion circuit and the signal collecting circuit so as to control them, and the control circuit is connected to a logging ground acquisition system; the antenna interface circuit selects one antenna unit in the array antenna. The method and device of the present invention can perform signal detection in a circumferentially multi-directional sensitive region.
    Type: Grant
    Filed: January 2, 2019
    Date of Patent: October 27, 2020
    Assignee: CHINA UNIVERSITY OF PETROLEUM-BEIJING
    Inventors: Lizhi Xiao, Guangzhi Liao, Wei Liu
  • Patent number: 10802097
    Abstract: A method of magnetic resonance imaging an object utilizing a plurality of flip angles is provided. The method includes transmitting a first preparation pulse corresponding to a first flip angle of the plurality into the object, and receiving a first MR signal from the object based at least in part on the first preparation pulse. The method further includes transmitting a second preparation pulse corresponding to a second flip angle of the plurality into the object, receiving a second MR signal from the object based at least in part on the second preparation pulse, and generating a T1 mapping of the object based at least in part on the first MR signal and the second MR signal. The second flip angle is different than the first flip angle.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: October 13, 2020
    Assignee: GE Precision Healthcare LLC
    Inventors: Glenn Scott Slavin, Anne Menini
  • Patent number: 10782257
    Abstract: An apparatus, method and computer program for characterising samples using NMR. The apparatus includes a pulse sequence generator; and a response detector. The apparatus is configured to generate transverse and refocusing pulses and to record the decay response of a sample following a transverse pulse and echo response at least once after at least one refocusing pulse in order to enable determination of at least one relaxation time of the sample. In this way, sample or sample components with short relaxation times may be characterized.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: September 22, 2020
    Assignee: PERM Instruments Inc.
    Inventors: Apostolos Kantzas, Serguei I. Krioutchkov, Zheng Yin Wang
  • Patent number: 10768335
    Abstract: The present disclosure relates to generating multiple depths of investigation (DOI) measurements with a saddle point design nuclear magnetic resonance sensor. In general, an NMR sensor in accordance with the present disclosure includes a first magnet at a first radial distance from a radial center, and a second magnet at a second radial distance from the radial center. The first magnet at least partially cancels out a magnetic field gradient produced by the second magnet. Further, the NMR sensor may include an antenna that generates a first set of NMR data from a first DOI by operating at a first frequency and, generates a second set of NMR data from a second DOI by operating a second frequency. Additional frequencies are possible and envisioned.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: September 8, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Anatoly Dementyev, Henry Bachman
  • Patent number: 10732314
    Abstract: Apparatus and method of characterizing a subterranean formation including observing a formation using nuclear magnetic resonance measurements, calculating an answer product by computing an integral transform on the indications in measurement-domain, and using answer products to estimate a property of the formation. Apparatus and a method for characterizing a subterranean formation including collecting NMR data of a formation, calculating an answer product comprising the data, wherein the calculating comprises a formula K ? ( x ) ? ? 0 ? ? k ? ( t ) ? e - t / x ? dt . and estimating a property of the formation using the answer product.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: August 4, 2020
    Assignee: Schlumberger Technology Corporation
    Inventors: Lalitha Venkataramanan, Tarek M. Habashy, Fred K. Gruber, Denise E. Freed
  • Patent number: 10732238
    Abstract: A circuit, system and method for measuring the optimal frequency of transmission and reception for achieving the best possible signal-to-noise ratio (SNR) in low impedance receive systems are provided. In one embodiment, the circuit includes: (1) an antenna that transmits and receives radio-frequency (RF) signals, (2) a receive circuit that is connected to the antenna during a receive mode and a calibration mode, wherein the receive circuit includes an amplifier having a low input impedance, and (3) an impedance switching circuit that places the amplifier in a high input impedance state during the calibration mode.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: August 4, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Lakshmi Sri Jyothi Chimakurthy
  • Patent number: 10724367
    Abstract: A method for estimation of water properties and hydrocarbon properties in a subsurface formation includes acquiring a plurality of well log measurements from the subsurface formation. The water properties and the hydrocarbon properties are parameterized with respect to a selected set of well log measurements. A simultaneous or sequential inversion is performed to estimate the water properties and the hydrocarbon properties.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: July 28, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventor: Chanh Cao Minh
  • Patent number: 10726586
    Abstract: The invention relates to a method for reconstructing magnetic resonance images, to a magnetic resonance apparatus and to a computer program product. According to the method, measurement data is acquired in an acquisition period. The measurement data is used to determine a motion curve over the acquisition period. In addition, at least one magnetic resonance image is reconstructed. In this process, the acquisition period is separated into a plurality of sub-periods by one or more separating periods and/or separating times in which the motion curve satisfies a defined motion condition, and each magnetic resonance image is reconstructed using the measurement data from at least one sub-period.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: July 28, 2020
    Assignee: Siemens Healthcare GmbH
    Inventors: Simon Bauer, Ralf Kartäusch
  • Patent number: 10718701
    Abstract: A method for determining a wettability of a subterranean formation (or formation core) includes either deploying a nuclear magnetic resonance (NMR) logging tool in a subterranean wellbore or deploying a formation core sample in a laboratory based NMR tool. NMR measurements of the formation (or formation core) are obtained and used to compute the wettability. The NMR measurements are processed to generate a two dimensional diffusion relaxation map (a D/T2 map) which is in turn processed to compute the wettability.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: July 21, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Chanh Cao Minh, Steve Crary, Philip M. Singer, Andrea Valori, Henry N. Bachman
  • Patent number: 10697911
    Abstract: There is described a method for determining the relative quantities of the expected components in a multi-component mixture of solids. The proposed quantification method makes use of a time domain nuclear magnetic resonance (TD-NMR) spectrometer and requires that, for each of the expected components in the mixture, a T1 saturation recovery curve (SRCi) is measured and recorded. The saturation recovery curve for the mixture sample (SRCmix) is determined from a measurement of the sample with the spectrometer. The relative amounts of the expected components present in the mixture sample are determined by fitting a linear combination of the component SRCs (SRCi) to the SRCmix. The resulting value of each weighting coefficient in the fit provides the relative proportion of the corresponding component in the overall sample.
    Type: Grant
    Filed: February 10, 2017
    Date of Patent: June 30, 2020
    Inventors: Dirk Stueber, Stefan Jehle
  • Patent number: 10697295
    Abstract: A method and system are described for imaging core samples associated with a subsurface region. The imaging results may be used to create or update a subsurface model and using the subsurface model and/or imaging results in hydrocarbon operations. The imaging techniques may include NMR imaging and CT imaging. Further, the imaging techniques may also include exposing the core sample to the imaging gas.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: June 30, 2020
    Assignee: ExxonMobil Upstream Research Company
    Inventors: Antonio S. Buono, Shawn Fullmer, Hubert E. King, Jr., Michael Sansone, Pavel Kortunov, John H. Dunsmuir, Bo Gao, James G. Kralik, Ye Xu
  • Patent number: 10697286
    Abstract: A method of identifying a material and/or condition of a material in a borehole is described, together with related apparatus. The material may either be between first and second tubulars or between a first tubular and a wall of the borehole. The method may include providing a reference quality factor (Qreference) for one or more known materials in one or more known conditions and measuring a downhole quality factor (Qmeasured) of the material and/or material condition to be identified. A spectral ratio ?=(Qmeasured/Qreference) may then be computed for one or more known materials under one or more known conditions followed by an analysis of the spectral ratios to identify the material and/or condition of the material in the borehole.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: June 30, 2020
    Assignee: STATOIL PETROLEUM AS
    Inventor: Ioan-Alexandru Merciu
  • Patent number: 10684342
    Abstract: In one embodiment, an MRI apparatus includes: an MRI scanner configured to acquire N+1 or more diffusion-weighted images by differently setting parameter values among the diffusion-weighted images, with regard to N types of parameters, wherein N is a natural number equal to or more than two; and processing circuitry configured to generate a computed diffusion-weighted image having an arbitrary value for at least one of the N types of parameters, based on relationship between signal values of the acquired diffusion-weighted images and the parameter values differently set among the acquired diffusion-weighted images.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: June 16, 2020
    Assignee: Canon Medical Systems Corporation
    Inventor: Tokunori Kimura
  • Patent number: 10677957
    Abstract: The instant invention relates to a method for noise reduction from a magnetic resonance sounding (MRS) oscillating signal, and more particularly, to a data processing method for reducing random noise contained in MRS oscillating signal based on joint algorithm principles of EMD and TFPF. A MRS oscillating signal is decomposed into different eigen-mode components by using decomposition characteristic of EMD algorithm; then a signal-dominated eigen-mode component is encoded as an instantaneous frequency of an analytical signal of unit amplitude using TFPF algorithm; and random noise is suppressed with the characteristics that the time-frequency distribution of the analytical signal is concentrated along with the instantaneous frequency. The method requires fewer filtering constraints and is simple to operate without need of designing a filtering interval in the time-frequency domain, and has good adaptability to the MRS oscillating signal with a low signal-noise-ratio.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: June 9, 2020
    Assignee: Jilin University
    Inventors: Tingting Lin, Yang Zhang, Yue Li, Ling Wan, Jun Lin
  • Patent number: 10663615
    Abstract: Nuclear magnetic resonance (NMR) tools, logging systems, and methods for measuring NMR properties of earth formations in a region of interest are provided. The NMR tool includes an antenna assembly, a magnet assembly, a compensating assembly, and a motion sensor. The antenna assembly is operable to generate a radio-frequency magnetic field and the magnet assembly is operable to generate a static magnetic field. The motion sensor is operable to generate readings for lateral motion of the antenna and magnet assemblies. The compensating assembly contains at least one electromagnet and is operable to reduce variation of the static magnetic field in the region of interest due to the lateral motion during NMR measurements based on the readings for the lateral motion.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: May 26, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventor: Arcady Reiderman