Patents by Inventor Martin Hurlimann

Martin Hurlimann 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).

  • Publication number: 20200301039
    Abstract: Small-sized flowlines are provided for use in NMR apparatus. The small-sized flowlines can have a channel with an inner diameter or maximum width of less than 0.2 inch and can be made of sapphire, yttria-stabilized zirconia (YSZ), or extruded polyether ether ketone (PEEK), which are useful in high temperature, high pressure environments such as downhole in a geological formation.
    Type: Application
    Filed: March 20, 2020
    Publication date: September 24, 2020
    Applicant: Schlumberger Technology Corporation
    Inventors: Yiqiao Tang, Yi-Qiao Song, Martin Hurlimann, Christopher Harrison, Marcus Hofheins Donaldson, Mark Flaum
  • Patent number: 10684236
    Abstract: Apparatus and methods are provided for finding indications of at least one of a water fraction, a hydrocarbon fraction, water conductivity, and water salinity of a fluid. The fluid is within a flow line that extends through a resonator. The flow line is subjected to microwaves at multiple microwave frequencies injected into the resonator, with electric field lines parallel to the fluid flow line. A power detector is used at an output of the resonator, and a peak power and associated resonance frequency are used to find the indication(s) which may be plotted and displayed. In one embodiment, the resonator is a dual loop-gap resonator, and the microwave frequencies are generated by a microwave sweeper source at approximately 1 GHz.
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: June 16, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Martin Hurlimann, Joseph P. Tomanic
  • Publication number: 20200174153
    Abstract: Downhole properties of a geological formation may be determined using nuclear magnetic resonance (NMR) measurements obtained by a moving tool. To do so, an interpretation of the NMR data obtained by the moving data may take into account a moving model, characterization, or calibration of the downhole NMR tool. Additionally or alternatively, a partial interpretation mask may exclude interpretation of certain areas of data (e.g., T1-T2 data points or diffusion-T2 data points) that are expected to be less likely to describe downhole materials of interest.
    Type: Application
    Filed: May 23, 2018
    Publication date: June 4, 2020
    Inventors: Yi-Qiao Song, Ravinath Kausik Kadayam Viswanathan, Martin Hurlimann, Vivek Anand, Albina Mutina
  • Patent number: 10444397
    Abstract: An apparatus for measuring nuclear magnetic resonance (NMR) properties of subsurface formations includes a magnet for pre-polarizing nuclear spins in the formations. A plurality of transmitter antennas is spaced apart along a length of the apparatus. The apparatus includes at least one of a receiver circuit selectively coupled to at least one of the plurality of transmitter antennas and a separate receiver antenna. The apparatus includes circuitry for applying radio frequency current pulses selectively to each of the plurality of transmitter antennas such that during a NMR measurement sequence while the apparatus is moving substantially only those of the plurality of transmitter antennas having radio frequency current pulses applied thereto are disposed longitudinally along a same region of interest in the subsurface formations.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 15, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Martin Hurlimann, Irfan Bulu, Yi-Qiao Song
  • Publication number: 20190271224
    Abstract: A method for making NMR measurements includes, in one embodiment, using an NMR tool to acquire NMR measurements that are effected by relative motion of the NMR tool and/or the specimen under investigation. The NMR tool may include a plurality of permanent magnets and a plurality of radio frequency (RF) coils. The relative motion is estimated and used to modify an NMR inversion kernel which is in turn used to transform the NMR measurements into motion-corrected NMR measurements. Corresponding systems, devices, and apparatuses are also disclosed herein.
    Type: Application
    Filed: May 21, 2019
    Publication date: September 5, 2019
    Inventors: Shin Utsuzawa, Martin Hurlimann, Lukasz Zielinski, Haitao Zhang
  • Patent number: 10301924
    Abstract: A method for correcting motion-effects from a downhole measurement includes, in one embodiment, determining relative motion of a downhole logging tool for a given logging operation in a borehole formed in an earth formation, determining a motion induced signal decay (MID) based upon the determined relative motion, determining a motion-effect inversion kernel (MEK) based upon the determined MID, using the downhole logging tool to acquire measurements that are affected by motion of the downhole logging tool during the logging operation, and using the MEK to process the acquired motion-affected measurements to obtain motion-corrected data. Corresponding systems, devices, and apparatuses are also disclosed herein.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: May 28, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Shin Utsuzawa, Martin Hurlimann, Lukasz Zielinski, Haitao Zhang
  • Patent number: 10114142
    Abstract: Systems and methods are provided for investigating a downhole formation using a nuclear magnetic resonance (NMR) tool having two or more radio frequency receiving coils. While the tool is moving through the borehole, the formation is magnetized and resulting signals are obtained. In accordance with the present approach, the acquired signals can be resolved azimuthally and can be reconstructed to obtain an indication of a parameter of the formation at multiple locations along the length of the borehole.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: October 30, 2018
    Inventors: Lalitha Venkataramanan, Robert Callan, Lukasz Zielinski, Martin Hurlimann, Timothy Andrew John Hopper
  • Patent number: 10061048
    Abstract: Methods for analyzing a formation samples using nuclear magnetic resonance (NMR) are described herein. One method includes performing an NMR measurement of the formation sample to obtain NMR data. The NMR measurement detects NMR signals with echo times of less than or equal to 100 microseconds. The NMR data is analyzed to determine a measure of organic hydrogen content of the formation sample, such as (i) total organic hydrogen content, (ii) kerogen content, (iii) bitumen content, and/or (iv) oil content.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: August 28, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Yi-Qiao Song, Albina Rishatovna Mutina, Ravinath Kausik Kadayam Viswanathan, Martin Hurlimann
  • Patent number: 10041893
    Abstract: Methods are provided for identifying one or more transition characteristics in a hydrocarbon fluid such as asphaltene onset pressure (AOP), bubble point or dew point. A transition characteristic is determined by subjecting the fluid to different pressures or temperatures, conducting NMR tests at the different pressures or temperatures to obtain signals, processing the signals to obtain values of a function of an NMR parameter as a function of pressure or temperature, and analyzing the values to find a discontinuity that identifies the transition characteristic. In embodiments, the NMR parameters may include at least one of a relaxation parameter such as T2 or a T1-T2 ratio, a diffusion parameter and an initial magnetization parameter. In embodiments, dual linear fitting, Bayesian change point detection algorithms, and instantaneous slope analysis may be utilized to analyze the values in order to find a discontinuity.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: August 7, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Marcus Hofheins Donaldson, Denise Freed, Martin Hurlimann, Yi-Qiao Song, Lalitha Venkataramanan
  • Publication number: 20180149765
    Abstract: An apparatus for measuring nuclear magnetic resonance (NMR) properties of subsurface formations includes a magnet for pre-polarizing nuclear spins in the formations. A plurality of transmitter antennas is spaced apart along a length of the apparatus. The apparatus includes at least one of a receiver circuit selectively coupled to at least one of the plurality of transmitter antennas and a separate receiver antenna. The apparatus includes circuitry for applying radio frequency current pulses selectively to each of the plurality of transmitter antennas such that during a NMR measurement sequence while the apparatus is moving substantially only those of the plurality of transmitter antennas having radio frequency current pulses applied thereto are disposed longitudinally along a same region of interest in the subsurface formations.
    Type: Application
    Filed: November 29, 2016
    Publication date: May 31, 2018
    Inventors: Martin Hurlimann, Irfan Bulu, Yi-Qiao Song
  • Publication number: 20170176627
    Abstract: Systems and methods are provided for investigating a downhole formation using a nuclear magnetic resonance (NMR) tool having two or more radio frequency receiving coils. While the tool is moving through the borehole, the formation is magnetized and resulting signals are obtained. In accordance with the present approach, the acquired signals can be resolved azimuthally and can be reconstructed to obtain an indication of a parameter of the formation at multiple locations along the length of the borehole.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 22, 2017
    Inventors: Lalitha Venkataramanan, Robert Callan, Lukasz Zielinski, Martin Hurlimann, Timothy Andrew John Hopper
  • Publication number: 20160334343
    Abstract: Apparatus and methods are provided for finding indications of at least one of a water fraction, a hydrocarbon fraction, water conductivity, and water salinity of a fluid. The fluid is within a flow line that extends through a resonator. The flow line is subjected to microwaves at multiple microwave frequencies injected into the resonator, with electric field lines parallel to the fluid flow line. A power detector is used at an output of the resonator, and a peak power and associated resonance frequency are used to find the indication(s) which may be plotted and displayed. In one embodiment, the resonator is a dual loop-gap resonator, and the microwave frequencies are generated by a microwave sweeper source at approximately 1 GHz.
    Type: Application
    Filed: January 22, 2015
    Publication date: November 17, 2016
    Inventors: Martin HURLIMANN, Joseph P. TOMANIC
  • Publication number: 20160202384
    Abstract: A method for correcting motion-effects from a downhole measurement includes, in one embodiment, determining relative motion of a downhole logging tool for a given logging operation in a borehole formed in an earth formation, determining a motion induced signal decay (MID) based upon the determined relative motion, determining a motion-effect inversion kernel (MEK) based upon the determined MID, using the downhole logging tool to acquire measurements that are affected by motion of the downhole logging tool during the logging operation, and using the MEK to process the acquired motion-affected measurements to obtain motion-corrected data. Corresponding systems, devices, and apparatuses are also disclosed herein.
    Type: Application
    Filed: August 21, 2014
    Publication date: July 14, 2016
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Shin Utsuzawa, Martin Hurlimann, Lukasz Zielinski, Haitao Zhang
  • Publication number: 20160178545
    Abstract: Methods are provided for identifying one or more transition characteristics in a hydrocarbon fluid such as asphaltene onset pressure (AOP), bubble point or dew point. A transition characteristic is determined by subjecting the fluid to different pressures or temperatures, conducting NMR tests at the different pressures or temperatures to obtain signals, processing the signals to obtain values of a function of an NMR parameter as a function of pressure or temperature, and analyzing the values to find a discontinuity that identifies the transition characteristic. In embodiments, the NMR parameters may include at least one of a relaxation parameter such as T2 or a T1-T2 ratio, a diffusion parameter and an initial magnetization parameter. In embodiments, dual linear fitting, Bayesian change point detection algorithms, and instantaneous slope analysis may be utilized to analyze the values in order to find a discontinuity.
    Type: Application
    Filed: December 23, 2014
    Publication date: June 23, 2016
    Inventors: Marcus Hofheins DONALDSON, Denise FREED, Martin HURLIMANN, Yi-Qiao SONG, Lalitha VENKATARAMANAN
  • Publication number: 20150022202
    Abstract: Methods for analyzing a formation samples using nuclear magnetic resonance (NMR) are described herein. One method includes performing an NMR measurement of the formation sample to obtain NMR data. The NMR measurement detects NMR signals with echo times of less than or equal to 100 microseconds. The NMR data is analyzed to determine a measure of organic hydrogen content of the formation sample, such as (i) total organic hydrogen content, (ii) kerogen content, (iii) bitumen content, and/or (iv) oil content.
    Type: Application
    Filed: July 17, 2014
    Publication date: January 22, 2015
    Inventors: Yi-Qiao Song, Albina Rishatovna Mutina, Ravinath Kausik Kadayam Viswanathan, Martin Hurlimann
  • Patent number: 8773125
    Abstract: Methods and related apparatuses of a downhole micro nuclear magnetic resonance (NMR) device having a resonant tuning (LC) circuit for use in a formation for collecting NMR signals from a fluid in the formation while under downhole pressures and temperatures. The downhole micro NMR device includes: a micro tube for the flowing fluid to flow therethrough; at least one magnet disposed about the micro tube; and at least one micro RF coil structured and arranged approximate to the micro tube and tuned to a Larmor frequency corresponding to a applied magnetic field from the at least one magnet.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: July 8, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Timothy Hopper, Martin Hurlimann, Yi-Qiao Song
  • Publication number: 20120169334
    Abstract: Methods and related apparatuses of a downhole micro nuclear magnetic resonance (NMR) device having a resonant tuning (LC) circuit for use in a formation for collecting NMR signals from a fluid in the formation while under downhole pressures and temperatures. The downhole micro NMR device includes: a micro tube for the flowing fluid to flow therethrough; at least one magnet disposed about the micro tube; and at least one micro RF coil structured and arranged approximate to the micro tube and tuned to a Larmor frequency corresponding to a applied magnetic field from the at least one magnet.
    Type: Application
    Filed: December 29, 2010
    Publication date: July 5, 2012
    Applicant: Schlumberger Technology Corporation
    Inventors: Timothy Hopper, Martin Hurlimann, Yi-Qiao Song
  • Patent number: 7852077
    Abstract: Methods and pulse sequences for facilitating nuclear magnetic resonance (NMR) measurements in grossly inhomogeneous fields. Methods and pulse sequences according to the invention may be used to accurately measure variables such as transverse relaxation time, longitudinal relaxation time, and diffusion, without the need for data at long recovery time, thereby allowing for faster measurements. In addition, methods and pulse sequences according to embodiment of the invention may allow simultaneous encoding of information in both the amplitude and the shape of echoes, so as to allow a single-shot measurement of multiple variables, e.g., both transverse relaxation time (from the decay of echo amplitudes) and longitudinal relaxation time (from the echo shape). CPMG detection may be used to overcome the often limited signal-to-noise ratio in grossly inhomogeneous fields.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: December 14, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Yi-Qiao Song, Nicolas Caudal, Martin Hürlimann, Eric E. Sigmund
  • Patent number: D620457
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: July 27, 2010
    Assignee: Inventio AG
    Inventors: Philipp Maurer, Martin Hürlimann
  • Patent number: D622673
    Type: Grant
    Filed: October 22, 2009
    Date of Patent: August 31, 2010
    Assignee: Inventio AG
    Inventors: Philipp Maurer, Martin Hürlimann