Patents by Inventor Paul Boonen
Paul Boonen 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: 9115568Abstract: A downhole measurement tool includes at least one regular receiver and at least one reference receiver externally deployed on a tool body. The reference receiver is configured to be acoustically isolated from the borehole, for example, via an isolation structure including a high-impedance cap and a low-impedance gap. The reference receiver may be deployed in a linear array with the regular receiver(s) and may be substantially identical to the regular receiver(s) such that it has substantially the same sensitivity to tool mode signals and internal drilling noise as do the regular receivers. Received waveforms may be processed so as to remove tool mode arrivals and/or drilling noise.Type: GrantFiled: September 29, 2009Date of Patent: August 25, 2015Assignee: Schlumberger Technology CorporationInventors: Wei Han, Jun Zhang, Paul Boonen
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Publication number: 20140205201Abstract: A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed image which is then inverse transformed back into the spatial domain using an inverse 2-D transform to obtain a corrected image. An automated method enables the cyclic peaks to be identified and removed from the borehole image via downhole processing.Type: ApplicationFiled: March 24, 2014Publication date: July 24, 2014Applicant: Schlumberger Technology CorporationInventors: Junichi Sugiura, Jun Zhang, Zhipeng Liu, Paul Boonen
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Patent number: 8682102Abstract: A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed image which is then inverse transformed back into the spatial domain using an inverse 2-D transform to obtain a corrected image. An automated method enables the cyclic peaks to be identified and removed from the borehole image via downhole processing.Type: GrantFiled: October 26, 2010Date of Patent: March 25, 2014Assignee: Schlumberger Technology CorporationInventors: Junichi Sugiura, Jun Zhang, Zhipeng Liu, Paul Boonen
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Patent number: 8655104Abstract: A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) Fourier Transform, removing cyclic noise components from the transformed image, and inverse transforming the image back into the spatial domain using an inverse 2-D Fourier Transform. The cyclic noise component may also be isolated by subtracting the corrected image from the original image or by removing all non-cyclic noise components from the transformed image prior to inverse transforming. Removal of the cyclic noise from a borehole image tends to enable the identification of borehole features and provide for improved accuracy in formation parameter evaluation. Evaluation of the cyclic noise component may also enable the source of the noise to be identified and mitigated.Type: GrantFiled: June 18, 2009Date of Patent: February 18, 2014Assignee: Schlumberger Technology CorporationInventors: Jun Zhang, Zhipeng Liu, Paul Boonen
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Patent number: 8625390Abstract: A method for making acoustic logging measurements includes grouping received acoustic waveforms into one of a plurality of groups, each group being representative of a measured borehole condition (e.g., a range of measured standoff values and/or a range of measured azimuth angles). The waveforms stored in at least one of the groups are stacked so as to obtain an averaged waveform. The averaged waveform may be further processed, for example, via a semblance algorithm to obtain at least one acoustic wave slowness.Type: GrantFiled: August 18, 2010Date of Patent: January 7, 2014Assignee: Schlumberger Technology CorporationInventors: Tsili Wang, Paul Boonen
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Patent number: 8547788Abstract: A method for determining an acoustic anisotropy of a subterranean formation includes measuring acoustic wave slownesses at three or more toolface angles while rotating a logging while drilling tool in a borehole. Compressional, shear, and/or guided wave slownesses may be measured. The measured slownesses are fit to a mathematical model to obtain maximum and minimum slownesses. The maximum and minimum slownesses are processed to determine the acoustic anisotropy of the formation.Type: GrantFiled: May 17, 2010Date of Patent: October 1, 2013Assignee: Schlumberger Technology CorporationInventors: Tsili Wang, Paul Boonen
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Publication number: 20120044783Abstract: A method for making acoustic logging measurements includes grouping received acoustic waveforms into one of a plurality of groups, each group being representative of a measured borehole condition (e.g., a range of measured standoff values and/or a range of measured azimuth angles). The waveforms stored in at least one of the groups are stacked so as to obtain an averaged waveform. The averaged waveform may be further processed, for example, via a semblance algorithm to obtain at least one acoustic wave slowness.Type: ApplicationFiled: August 18, 2010Publication date: February 23, 2012Applicant: SMITH INTERNATIONAL, INC.Inventors: Tsili Wang, Paul Boonen
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Publication number: 20110280102Abstract: A method for determining an acoustic anisotropy of a subterranean formation includes measuring acoustic wave slownesses at three or more toolface angles while rotating a logging while drilling tool in a borehole. Compressional, shear, and/or guided wave slownesses may be measured. The measured slownesses are fit to a mathematical model to obtain maximum and minimum slownesses. The maximum and minimum slownesses are processed to determine the acoustic anisotropy of the formation.Type: ApplicationFiled: May 17, 2010Publication date: November 17, 2011Applicant: SMITH INTERNATIONAL, INC.Inventors: Tsili Wang, Paul Boonen
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Publication number: 20110073368Abstract: A downhole measurement tool includes at least one regular receiver and at least one reference receiver externally deployed on a tool body. The reference receiver is configured to be acoustically isolated from the borehole, for example, via an isolation structure including a high-impedance cap and a low-impedance gap. The reference receiver may be deployed in a linear array with the regular receiver(s) and may be substantially identical to the regular receiver(s) such that it has substantially the same sensitivity to tool mode signals and internal drilling noise as do the regular receivers. Received waveforms may be processed so as to remove tool mode arrivals and/or drilling noise.Type: ApplicationFiled: September 29, 2009Publication date: March 31, 2011Applicant: SMITH INTERNATIONAL, INC.Inventors: Wei Han, Jun Zhang, Paul Boonen
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Publication number: 20110038559Abstract: A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) transform (e.g., using a discrete cosine transform). The cyclic noise components (peaks) are removed from the transformed image which is then inverse transformed back into the spatial domain using an inverse 2-D transform to obtain a corrected image. An automated method enables the cyclic peaks to be identified and removed from the borehole image via downhole processing.Type: ApplicationFiled: October 26, 2010Publication date: February 17, 2011Applicant: SMITH INTERNATIONAL, INC.Inventors: Junichi Sugiura, Jun Zhang, Paul Boonen, Zhipeng Liu
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Publication number: 20100322533Abstract: A method for removing cyclic noise from a borehole image includes transforming the image into the frequency domain using a two-dimensional (2-D) Fourier Transform, removing cyclic noise components from the transformed image, and inverse transforming the image back into the spatial domain using an inverse 2-D Fourier Transform. The cyclic noise component may also be isolated by subtracting the corrected image from the original image or by removing all non-cyclic noise components from the transformed image prior to inverse transforming. Removal of the cyclic noise from a borehole image tends to enable the identification of borehole features and provide for improved accuracy in formation parameter evaluation. Evaluation of the cyclic noise component may also enable the source of the noise to be identified and mitigated.Type: ApplicationFiled: June 18, 2009Publication date: December 23, 2010Applicant: SMITH INTERNATIONAL, INC.Inventors: Jun Zhang, Paul Boonen, Zhipeng Liu