Patents by Inventor Li Pan

Li Pan 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: 10996368
    Abstract: A system and method for electromagnetic measurements. The system may comprise an electromagnetic transmitter, wherein the electromagnetic transmitter is an antenna and is operable to transmit a low frequency electromagnetic field into a formation or a high frequency electromagnetic field into the formation. The system may further comprise an electromagnetic receiver, wherein the electromagnetic receiver is an antenna and is operable to record the high frequency electromagnetic field or the low frequency electromagnetic field. The method may comprise transmitting a high frequency electromagnetic field, recording a high frequency electromagnetic field, transmitting a low frequency electromagnetic field, recording a low frequency electromagnetic field, performing a shallow inversion on the low frequency electromagnetic field and the high frequency electromagnetic field to form a formation resistivity model, and running the deep inversion with the random initial guesses that have the misfit.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: May 4, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Weixin Dong, Hsu-Hsiang Wu, Li Pan
  • Patent number: 10968735
    Abstract: A telemetry and communication system and method for communication between a well production system and a well assist system. The system may comprise a well production system, which may comprise a telemetry sensor disposed in a production well below a highly conductive layer and a transmitter. The system may further comprise a well assist system comprising a sensor which is operable to receive information from the transmitter. A method for providing telemetry and communication may comprise determining a location of a well assist system for a well production system, deploying the well assist system to the location, disposing a sensor from the well assist system below a highly conductive layer, and receiving information with the sensor, the information being transmitted from a transmitter of the well production system disposed below the highly conductive layer.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: April 6, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yijing Fan, Li Pan, Hsu-Hsiang Wu
  • Publication number: 20210079785
    Abstract: A method and system for determining a position of a second production wellbore. The method may comprise inducing a first current into a first conductive member with a first source, emitting a first magnetic field generated by the first current from the first conductive member into a formation, inducing a second current into a second conductive member with a second source, emitting a second magnetic field generated by the second current from the second conductive member into the formation, disposing an electromagnetic sensor system into the second production wellbore, recording the first magnetic field with the at least one sensor from the formation, and recording the second magnetic field with the at least one sensor from the formation. The system may comprise a first source, an electromagnetic sensor system, at least one sensor and an information handling system configured to determine the position of the second production wellbore.
    Type: Application
    Filed: November 30, 2018
    Publication date: March 18, 2021
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Yijing Fan, Hsu-Hsiang Wu, Li Pan
  • Patent number: 10948621
    Abstract: A dielectric logging tool for use in a borehole that penetrates a subsurface formation, includes: at least one wall-contacting face with one or more embedded microstrip antennas including a transmit antenna; an oscillator that supplies a transmit signal; a coherent receiver that measures the one or more scattering coefficients; and a processor that derives a formation property from the one or more scattering coefficients. The tool may be conveyed along a borehole, with the scattering coefficients and derived formation property values associated with tool position and orientation to provide a permittivity log.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: March 16, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Glenn Andrew Wilson, Luis San Martin, Li Pan, Burkay Donderici
  • Publication number: 20210055447
    Abstract: A system and method for electromagnetic measurements. The system may comprise an electromagnetic transmitter, wherein the electromagnetic transmitter is an antenna and is operable to transmit a low frequency electromagnetic field into a formation or a high frequency electromagnetic field into the formation. The system may further comprise an electromagnetic receiver, wherein the electromagnetic receiver is an antenna and is operable to record the high frequency electromagnetic field or the low frequency electromagnetic field. The method may comprise transmitting a high frequency electromagnetic field, recording a high frequency electromagnetic field, transmitting a low frequency electromagnetic field, recording a low frequency electromagnetic field, performing a shallow inversion on the low frequency electromagnetic field and the high frequency electromagnetic field to form a formation resistivity model, and running the deep inversion with the random initial guesses that have the misfit.
    Type: Application
    Filed: December 28, 2018
    Publication date: February 25, 2021
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Weixin Dong, Hsu-Hsiang Wu, Li Pan
  • Patent number: 10928542
    Abstract: A method may comprise: inserting into a wellbore penetrating a subterranean formation an apparatus comprising: a transmitter sub comprising a transmitter coil; a first receiver sub comprising a first receiver coil; a second receiver sub comprising a second receiver coil; and a third receiver sub comprising a third receiver coil; generating an electromagnetic wave at the transmitter coil; propagating the electromagnetic wave through the subterranean formation; receiving the electromagnetic wave in the first receiver coil, the second receiver coil, and the third receiver coil; generating a plurality of response signals, wherein the plurality of response signals comprises a first response signal in the first receiver coil, a second response signal in the second receiver coil, and a third response signal the third receiver coil; solving a series of linear equations defined by an orientation of the transmitter sub in the wellbore, orientation in the wellbore for each of the first receiver coil, the second receiver
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: February 23, 2021
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Li Pan, Hsu-Hsiang Wu, Yijing Fan
  • Publication number: 20210041594
    Abstract: A transmitter of a downhole tool inserted in a borehole of a geological formation transmits a first signal. A receiver of the downhole tool receives a second signal, where the second signal is induced by the first signal in the geological formation. A simple response matrix is determined based on the second signal, where the simple response matrix includes a plurality of response components. One or more of the response components are combined and a modified response matrix is formed by replacing one or more of the plurality of response components in the simple response matrix with a linear combination of the response components of the simple response matrix. The modified response matrix is inverted and an indication of formation properties in the geological formation is output.
    Type: Application
    Filed: June 29, 2018
    Publication date: February 11, 2021
    Inventors: Li Pan, Hsu-Hsiang Wu, Weixin Dong, YiJing Fan
  • Publication number: 20210017299
    Abstract: Methods of preparing a hemicellulose-product and a holocellulose-product from a carbohydrate-rich material, including spend coffee grounds, are described. Hemicellulose-products and holocellulose-products produced according to these methods are also described.
    Type: Application
    Filed: November 20, 2019
    Publication date: January 21, 2021
    Applicant: Kerry Luxembourg S.à.r.l.
    Inventors: Li PAN, Rajesh POTINENI, Yingshuang LU, Peter LEE, John Kailemia MUCHENA, Celia CHEE
  • Patent number: 10891177
    Abstract: A message management method is performed at a computing device, the method including: storing received messages into a plurality of cache queues according to priorities of the received messages; extracting messages from the plurality of cache queues, and storing the extracted messages into a uniform cache queue, wherein the uniform cache queue includes multiple entries, each entry corresponding to a respective one of the plurality of cache queues; scheduling the stored messages in the uniform cache queue to a plurality of outputting scheduling queues according to their respective priorities; and transmitting the stored messages from the scheduling queues to respective terminals by using a transmit channel corresponding to the scheduling queues.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: January 12, 2021
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Xin Liu, Min Wang, Bo Pang, Dekai Li, Li Pan, Haojie Lin, Yudong Chen, Yikun Huang, Junliang Zeng, Peiyi Chen, Li Li, Jindong Zhang, Rongjian Huang, Bin Li
  • Publication number: 20210003733
    Abstract: Numerical and/or semi-analytical methods are leveraged to decouple a complete set of nonzero electromagnetic field tensor components (118) from detected signal data (119). Nine nonzero components can serve as inputs for a three-dimensional inversion process to determine formation properties. A resistivity tool (100) containing at least one transmitter (111) and at least one receiver (108, 109) at tilted angles receives an electromagnetic signal throughout a rotation. A difference in the azimuthal positions of the transmitter(s) and receiver(s) during rotation of the resistivity tool can result in an azimuthal offset between resistivity tool subs. The components (118) are decoupled from the detected signal data (119) numerically or semi-analytically according to whether the azimuthal offset angle is known. If the azimuthal offset angle is known, the nine components are determined numerically through curve fitting.
    Type: Application
    Filed: March 6, 2019
    Publication date: January 7, 2021
    Inventors: Junsheng Hou, Michael S. Bittar, Yijing Fan, Li Pan, Jin Ma
  • Publication number: 20200408950
    Abstract: A method for calibrating a resistivity-logging tool using air-hang calibration is provided. The method may include performing an air-hang measurement using the resistivity-logging tool and performing a first measurement decoupling operation on the air-hang measurement. The first measurement decoupling operation may include generating correcting factors based on a physical model and calculating an air-hang calibration matrix based on the correcting factors. Additionally, the method may include performing a formation measurement using the resistivity-logging tool and performing a second measurement decoupling operation on the formation measurement to generate a decoupled formation measurement matrix. Further, the method may include calibrating the resistivity-logging tool to generate a calibrated formation measurement matrix by subtracting the air-hang calibration matrix from the decoupled formation measurement matrix.
    Type: Application
    Filed: November 16, 2018
    Publication date: December 31, 2020
    Inventors: Li Pan, Hsu-Hsiang Wu, Yijing Fan
  • Publication number: 20200384664
    Abstract: A power tool includes a function member, a motor, a driving circuit electrically connected to the motor to drive the motor, and a first control module configured to output a first control signal to the driving circuit. The first control module has a first working state and a first failure state. The first control module outputs a first working signal when the first control module is in the first working state, and outputs a first failure signal when the first control module is in the first failure state. A second control module is electrically connected to the first control module to receive the first working signal or the first failure signal from the first control module. The second control module outputs a second control signal to turn off the motor when the second control module receives the first failure signal from the first control module.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 10, 2020
    Inventors: Dezhong Yang, Jifeng Feng, Li Pan
  • Publication number: 20200308957
    Abstract: A method and system for electromagnetic ranging of a target wellbore. A method may comprise disposing an electromagnetic ranging tool in a wellbore, energizing a conductive member disposed in the target wellbore to create an electromagnetic field, measuring at least one component of the electromagnetic field from the target wellbore, performing at least two non-axial magnetic field measurements, performing at least one axial magnetic field measurement, calculating a processed non-axial magnetic field measurement using the at least two non-axial magnetic field measurements, calculating an end-of-pipe ratio with the processed non-axial magnetic field measurement and the at least one axial magnetic field measurement, and altering a course of the electromagnetic ranging tool based at least in part from the end-of-pipe ratio. A well ranging system may comprise a downhole assembly, a sensor comprising a first component and a second component, a drill string, and an information handling system.
    Type: Application
    Filed: December 21, 2017
    Publication date: October 1, 2020
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Yijing Fan, Burkay Donderici, Hsu-Hsiang Wu, Li Pan
  • Publication number: 20200309984
    Abstract: A method may comprise: inserting into a wellbore penetrating a subterranean formation an apparatus comprising: a transmitter sub comprising a transmitter coil; a first receiver sub comprising a first receiver coil; a second receiver sub comprising a second receiver coil; and a third receiver sub comprising a third receiver coil; generating an electromagnetic wave at the transmitter coil; propagating the electromagnetic wave through the subterranean formation; receiving the electromagnetic wave in the first receiver coil, the second receiver coil, and the third receiver coil; generating a plurality of response signals, wherein the plurality of response signals comprises a first response signal in the first receiver coil, a second response signal in the second receiver coil, and a third response signal the third receiver coil; solving a series of linear equations defined by an orientation of the transmitter sub in the wellbore, orientation in the wellbore for each of the first receiver coil, the second receiver
    Type: Application
    Filed: June 7, 2018
    Publication date: October 1, 2020
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Li Pan, Hsu-Hsiang Wu, Yijing Fan
  • Publication number: 20200270982
    Abstract: A method may comprise: inserting into a wellbore penetrating a subterranean formation a tool comprising: a transmitter sub assembly comprising a transmitter; and a receiver sub assembly comprising a receiver; generating an electromagnetic wave at the transmitter; propagating the electromagnetic wave through the subterranean formation; receiving the electromagnetic wave in the receiver; generating a response signal in the receiver; calculating a distance to a bed boundary position in a TVDp direction, wherein the TVDp direction is a direction where an angle between the TVDp direction and a tool axis is equal to a tool inclination from a true vertical direction (TVD), wherein TVD is a direction with respect to gravity; calculating a distance to bed boundary in a TST direction, wherein the TST direction is a true stratigraphic thickness direction in a direction towards a bed boundary; calculating a distance to bed boundary in a TVD direction; generating a formation characterization comprising a visual representa
    Type: Application
    Filed: July 10, 2018
    Publication date: August 27, 2020
    Applicant: Halliburton Energy Services, Inc.
    Inventors: Li Pan, Hsu-Hsiang Wu
  • Publication number: 20200264942
    Abstract: A message management method is performed at a computing device, the method including: storing received messages into a plurality of cache queues according to priorities of the received messages; extracting messages from the plurality of cache queues, and storing the extracted messages into a uniform cache queue, wherein the uniform cache queue includes multiple entries, each entry corresponding to a respective one of the plurality of cache queues; scheduling the stored messages in the uniform cache queue to a plurality of outputting scheduling queues according to their respective priorities ; and transmitting the stored messages from the scheduling queues to respective terminals by using a transmit channel corresponding to the scheduling queues .
    Type: Application
    Filed: May 7, 2020
    Publication date: August 20, 2020
    Inventors: Xin LIU, Min Wang, Bo Pang, Dekai LI, Li Pan, Haojie Lin, Yudong Chen, Yikun Huang, Junliang Zeng, Peiyi Chen, Li Li, Jindong Zhang, Rongjian Huang, Bin Li
  • Patent number: 10748277
    Abstract: Tissue is characterized using machine-learnt classification. The prognosis, diagnosis or evidence in the form of a similar case is found by machine-learnt classification from features extracted from frames of medical scan data. The texture features for tissue characterization may be learned using deep learning. Using the features, therapy response is predicted from magnetic resonance functional measures before and after treatment in one example. Using the machine-learnt classification, the number of measures after treatment may be reduced as compared to RECIST for predicting the outcome of the treatment, allowing earlier termination or alteration of the therapy.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: August 18, 2020
    Assignees: Siemens Healthcare GmbH, The Johns Hopkins University
    Inventors: Shaohua Kevin Zhou, David Liu, Berthold Kiefer, Atilla Peter Kiraly, Benjamin L. Odry, Robert Grimm, Li Pan, Ihab Kamel
  • Publication number: 20200249304
    Abstract: A method for acquiring magnetic resonance imaging data with respiratory motion compensation using one or more motion signals includes acquiring a plurality of gradient-delay-corrected radial readout views of a subject using a free-breathing multi-echo pulse sequence, and sampling a plurality of data points of the gradient-delay-corrected radial readout views to yield a self-gating signal. The self-gating signal is used to determine a plurality of respiratory motion states corresponding to the plurality of gradient-delay-corrected radial readout views. The respiratory motion states are used to correct respiratory motion bias in the gradient-delay-corrected radial readout views, thereby yielding gradient-delay-corrected and motion-compensated multi-echo data. One or more images are reconstructed using the gradient-delay-corrected and motion-compensated multi-echo data.
    Type: Application
    Filed: February 5, 2020
    Publication date: August 6, 2020
    Inventors: Xiaodong Zhong, Holden H. Wu, Vibhas S. Deshpande, Tess Armstrong, Li Pan, Marcel Dominik Nickel, Stephan Kannengiesser
  • Patent number: 10725196
    Abstract: A transmitter/receiver for use in a dielectric logging tool. The transmitter/receiver generally includes a housing, a septum, a first antenna, and a second antenna. When operated as a transmitter, a first and second electromagnetic signal are emitted by the first and second antenna, respectively. The housing and septum are shaped to combine the first and second electromagnetic signals into a combined signal having varying orientations depending on the phase difference between the first and second electromagnetic signals. When operated as a receiver, an incoming electromagnetic signal is divided into a first and second component signal. The first and second component signals are directed to the first and second antennas, respectively, where they are converted into first and second electrical signals.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: July 28, 2020
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Li Pan, Chao-Fu Wang, Rencheng Song, Jin Ma
  • Publication number: 20200230310
    Abstract: A peritoneal dialysis system includes a heater, a fresh dialysis fluid heating chamber located above the heater, a used dialysis fluid chamber located above the fresh dialysis fluid heating chamber, a lid, and a pneumatic actuation unit supporting the heater and configured to seal to the lid so that the lid covers the fresh dialysis fluid heating chamber and the used dialysis fluid chamber, the pneumatic actuation chamber configured to apply a vacuum within the lid to remove used dialysis fluid from a patient into the used dialysis fluid chamber.
    Type: Application
    Filed: March 27, 2020
    Publication date: July 23, 2020
    Inventors: Robert W. Childers, A. Scott Keeling, Li Pan