Patents by Inventor Baichun Sun
Baichun Sun 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).
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Patent number: 11927711Abstract: Apparatus, methods, and systems for determining body wave slowness values for a target formation zone. A method includes selecting a target axial resolution based on the size of a receiver array, obtaining a plurality of waveform data sets corresponding to a target formation zone and each acquired at a different shot position, reconstructing the plurality of waveform data sets to generate a plurality of subarray data sets corresponding to the target formation zone, determining a slowness value for each subarray data set and determining a slowness versus offset value for each subarray data set. The method may also include generating a borehole model having at least one alteration formation zone and a virgin formation zone and generating a slowness versus offset model based at least in part on the borehole model. The method may also include determining a radial depth of the alteration formation zone.Type: GrantFiled: May 21, 2019Date of Patent: March 12, 2024Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ruijia Wang, Baichun Sun
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Patent number: 11768306Abstract: A method may comprise: disposing an acoustic logging tool in a wellbore, wherein the acoustic logging tool comprises a transmitter and a receiver; emitting a flexural wave from the transmitter; recording a four component dipole waveform with the receiver, wherein the four component dipole waveform comprises XX, XY, YX, and YY components; rotating the four component dipole waveform using Alford rotation to produce rotated waveform components, wherein the rotated waveform components comprise XX?, XY?, YX?, and YY? components; comparing a travel time of XX? and YY? components to identify a fast wave and a slow wave from the rotated waveform components; processing the fast wave and the slow wave using high-resolution data-driven processing to obtain a fast wave flexural dispersion curve and a slow wave flexural dispersion curve; determining a frequency dependent anisotropy curve using the fast wave flexural dispersion curve and the slow wave flexural dispersion curve; and determining a low-resolution shear anisotType: GrantFiled: November 21, 2018Date of Patent: September 26, 2023Assignee: Halliburton Energy Services, Inc.Inventors: Ruijia Wang, Baichun Sun
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Publication number: 20220179118Abstract: Apparatus, methods, and systems for determining body wave slowness values for a target formation zone. A method includes selecting a target axial resolution based on the size of a receiver array, obtaining a plurality of waveform data sets corresponding to a target formation zone and each acquired at a different shot position, reconstructing the plurality of waveform data sets to generate a plurality of subarray data sets corresponding to the target formation zone, determining a slowness value for each subarray data set and determining a slowness versus offset value for each subarray data set. The method may also include generating a borehole model having at least one alteration formation zone and a virgin formation zone and generating a slowness versus offset model based at least in part on the borehole model. The method may also include determining a radial depth of the alteration formation zone.Type: ApplicationFiled: May 21, 2019Publication date: June 9, 2022Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ruijia WANG, Baichun SUN
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Patent number: 11237288Abstract: A portion of an anisotropy formation through which a wellbore is formed can be identified. An estimate of an elastic anisotropy parameter for the portion can be adjusted based on a first quality control analysis using the elastic anisotropy parameter for the portion. The first signal representing the elastic anisotropy parameter for the portion. The estimate of the elastic anisotropy parameter for the portion can be adjusted based on a second quality control analysis using estimates for the elastic anisotropy parameters for two or more portions of the anisotropy formation.Type: GrantFiled: March 16, 2017Date of Patent: February 1, 2022Assignee: Halliburton Energy Services, Inc.Inventors: Brian E. Hornby, Ruijia Wang, Kristoffer Walker, Mark Collins, Joonshik Kim, Baichun Sun
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Patent number: 11209565Abstract: Disclosed are systems and methods for high precision acoustic logging processing for compressional and shear slowness. The method comprises measuring, by a sonic logging tool, sonic data associated with a formation within a borehole, attempting a detection of a first arrival within the sonic data determining whether the attempted detection of the first arrival is accurate, and in response to an accurate detection of the first arrival determining a travel time of the first arrival, generating a coherence map including the first arrival, and determining, based on the coherence map, a characteristic of the formation.Type: GrantFiled: March 28, 2017Date of Patent: December 28, 2021Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ruijia Wang, Chung Chang, Kristoffer Thomas Walker, Baichun Sun
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Patent number: 11112519Abstract: Disclosed are systems and methods for selecting modes and frequencies of interest in a slowness-frequency map of sonic logging information. These include measuring, by a sonic logging tool, sonic data within a borehole, determining a frequency range for a selected mode of the sonic data, determining a slowness range for the selected mode of the sonic data, applying the frequency range and the slowness range to the sonic data to select a subset of data from the sonic data, processing the selected subset of data.Type: GrantFiled: March 28, 2017Date of Patent: September 7, 2021Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ruijia Wang, Chung Chang, John Philip Granville, Baichun Sun
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Publication number: 20210048546Abstract: A method may comprise: disposing an acoustic logging tool in a wellbore, wherein the acoustic logging tool comprises a transmitter and a receiver; emitting a flexural wave from the transmitter; recording a four component dipole waveform with the receiver, wherein the four component dipole waveform comprises XX, XY, YX, and YY components; rotating the four component dipole waveform using Alford rotation to produce rotated waveform components, wherein the rotated waveform components comprise XX?, XY?, YX?, and YY? components; comparing a travel time of XX? and YY? components to identify a fast wave and a slow wave from the rotated waveform components; processing the fast wave and the slow wave using high-resolution data-driven processing to obtain a fast wave flexural dispersion curve and a slow wave flexural dispersion curve; determining a frequency dependent anisotropy curve using the fast wave flexural dispersion curve and the slow wave flexural dispersion curve; and determining a low-resolution shear anisotType: ApplicationFiled: November 21, 2018Publication date: February 18, 2021Applicant: Halliburton Energy Services, Inc.Inventors: Ruijia Wang, Baichun Sun
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Patent number: 10670761Abstract: A method and system for producing a Quasi-Static Stoneley Slowness log. The method for producing a Quasi-Static Stoneley Slowness log may comprise recording a pressure wave at a receiver; determining a slowness-frequency range with an information handling system from the pressure wave, processing a frequency-domain semblance, extracting a Stoneley Dispersion, minimizing a misfit between theoretical and the Stoneley Dispersion, and identifying Quasi-Static Stoneley slowness from the Stoneley Dispersion. The well measurement system for producing an Quasi-Static Stoneley Slowness log and shear slowness anisotropy may comprise a downhole tool, a vehicle, and an information handling system.Type: GrantFiled: December 27, 2016Date of Patent: June 2, 2020Assignee: Halliburton Energy Services, Inc.Inventors: Ruijia Wang, Chung Chang, Baichun Sun
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Patent number: 10663612Abstract: An acoustic logging system identifies hydrocarbon formation types by a real-time model-constrained mud wave slowness determination method using borehole guided waves. The system also combines data processing from different acoustic waveform processing techniques using an information sharing procedure, for example, using monopole source data and dipole source data, to further improve the processing results and to achieve more stable and reliable real-time shear slowness answers.Type: GrantFiled: November 3, 2016Date of Patent: May 26, 2020Assignee: Halliburton Energy Services, Inc.Inventors: Ruijia Wang, Chung Chang, Baichun Sun
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Publication number: 20190317238Abstract: A method and system for producing a Quasi-Static Stoneley Slowness log. The method for producing a Quasi-Static Stoneley Slowness log may comprise recording a pressure wave at a receiver; determining a slowness-frequency range with an information handling system from the pressure wave, processing a frequency-domain semblance, extracting a Stoneley Dispersion, minimizing a misfit between theoretical and the Stoneley Dispersion, and identifying Quasi-Static Stoneley slowness from the Stoneley Dispersion. The well measurement system for producing an Quasi-Static Stoneley Slowness log and shear slowness anisotropy may comprise a downhole tool, a vehicle, and an information handling system.Type: ApplicationFiled: December 27, 2016Publication date: October 17, 2019Applicant: Halliburton Energy Services, Inc.Inventors: Ruijia Wang, Chung Chang, Baichun Sun
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Publication number: 20190293823Abstract: An acoustic logging system determines slowness picks using acoustic waveform phase and amplitude data. An amplitude-based first-arrival-picking (“FAP”) technique is applied to acquired waveforms to derive a first set of slowness picks, and a waveform phase coherence technique is also applied to derive a second set of slowness picks. The first and second slowness pick sets are then compared in a variety of ways to determine a final set of slowness picks.Type: ApplicationFiled: December 14, 2016Publication date: September 26, 2019Inventors: BAICHUN SUN, Ruijia Wang, Chung Chang
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Publication number: 20190257971Abstract: An acoustic logging system identifies hydrocarbon formation types by a real-time model-constrained mud wave slowness determination method using borehole guided waves. The system also combines data processing from different acoustic waveform processing techniques using an information sharing procedure, for example, using monopole source data and dipole source data, to further improve the processing results and to achieve more stable and reliable real-time shear slowness answers.Type: ApplicationFiled: November 3, 2016Publication date: August 22, 2019Applicant: Halliburton Energy Services , Inc.Inventors: Ruijia WANG, Chung CHANG, Baichun SUN
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Publication number: 20190018161Abstract: Disclosed are systems and methods for high precision acoustic logging processing for compressional and shear slowness. The method comprises measuring, by a sonic logging tool, sonic data associated with a formation within a borehole, attempting a detection of a first arrival within the sonic data determining whether the attempted detection of the first arrival is accurate, and in response to an accurate detection of the first arrival determining a travel time of the first arrival, generating a coherence map including the first arrival, and determining, based on the coherence map, a characteristic of the formation.Type: ApplicationFiled: March 28, 2017Publication date: January 17, 2019Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ruijia WANG, Chung CHANG, Kristoffer Thomas WALKER, Baichun SUN
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Publication number: 20190018162Abstract: Disclosed are systems and methods for selecting modes and frequencies of interest in a slowness-frequency map of sonic logging information. These include measuring, by a sonic logging tool, sonic data within a borehole, determining a frequency range for a selected mode of the sonic data, determining a slowness range for the selected mode of the sonic data, applying the frequency range and the slowness range to the sonic data to select a subset of data from the sonic data, processing the selected subset of data.Type: ApplicationFiled: March 28, 2017Publication date: January 17, 2019Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Ruijia WANG, Chung CHANG, Kristoffer Thomas WALKER, Baichun SUN
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Publication number: 20180164463Abstract: A portion of an anisotropy formation through which a wellbore is formed can be identified. An estimate of an elastic anisotropy parameter for the portion can be adjusted based on a first quality control analysis using the elastic anisotropy parameter for the portion. The first signal representing the elastic anisotropy parameter for the portion. The estimate of the elastic anisotropy parameter for the portion can be adjusted based on a second quality control analysis using estimates for the elastic anisotropy parameters for two or more portions of the anisotropy formation.Type: ApplicationFiled: March 16, 2017Publication date: June 14, 2018Inventors: Brian E. Hornby, Ruijia Wang, Kristoffer Walker, Mark Collins, JoonShik Kim, Baichun Sun
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Publication number: 20170212274Abstract: A method and system of performing quality control for a downhole tool. An acoustic source is employed to generate a Stoneley wave, and acoustic receivers generate signals indicative of the Stoneley wave. A reference value is calculated from the signals to assess the quality of the receivers. The reference value may be for a selected receiver or a selected receiver ring. The reference value is compared to a threshold deviation to determine if the reference value is outside the threshold deviation. If the reference value is outside of the threshold deviation, the deviation for one of the selected receiver or the selected receiver ring is corrected.Type: ApplicationFiled: August 18, 2016Publication date: July 27, 2017Applicant: Halliburton Energy Services, Inc.Inventors: Baichun Sun, Kristoffer T. Walker, Philip W. Tracadas, Wei Li, Ruijia Wang, Gary Kainer, Chung Chang