Patents by Inventor John Rasmus

John Rasmus 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: 20210033746
    Abstract: Aspects of the present disclosure relate to a method for determining a wettability of one or more types of solid particles within a geological formation. The method may include receiving a plurality of electromagnetic measurements within a frequency range from an electromagnetic well-logging tool. The method may also include determining a contact angle associated with at least one type of solid particles within the geological formation using the electromagnetic measurements.
    Type: Application
    Filed: July 28, 2020
    Publication date: February 4, 2021
    Inventors: Siddharth Misra, Dean Homan, Yuteng Jin, John Rasmus
  • Patent number: 10809416
    Abstract: Methods and apparatus for characterizing a subterranean formation traversed by a wellbore including collecting data from the formation using a tool wherein the tool collects data to form an azimuthal image, characterizing a section of the formation comprising data and images acquired in a high angle wellbore section or horizontal wellbore section using a parametric model, and performing an inversion using apparent densities and volumetric photoelectric factor images to build a formation model wherein the inversion is tailored for high angle wellbore sections and/or horizontal wellbore sections.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: October 20, 2020
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sushil Shetty, Dzevat Omeragic, Tarek M. Habashy, John Rasmus, Jeffrey Miles
  • Publication number: 20190353819
    Abstract: The highly valuable properties of resistivity and dielectric constant of a geological formation may be determined using an induction measurement, even for a geological formation with bed boundary or dipping effects, using a one-dimensional (1D) formation model. Induction measurements may be obtained in a wellbore through the geological formation using one or more downhole tools. One or more processors may be used to perform an inversion to estimate resistivity and dielectric constant values of the geological formation. The inversion may be performed using the induction measurements and a one-dimensional model that includes a number of geological layers.
    Type: Application
    Filed: April 26, 2019
    Publication date: November 21, 2019
    Inventors: Gong Li Wang, John Rasmus, Dean Homan
  • Patent number: 10466375
    Abstract: A method for automatic interpretation of bulls-eye and sinusoidal features observed in LWD images is disclosed. In some embodiments, the method includes an automatic workflow for extracting smooth contours from images that demarcate boundaries of structural features, followed by projection of the contours to three-dimensional (3D) point clouds in the well coordinate system for structural interpretation. The method may characterize both sinusoidal features and bulls-eye features, taking into account variations of formation dip/azimuth, or well inclination/azimuth, on the topology of a structural feature. The disclosed method may be sufficiently fast for use in real-time analysis and interpretation, or to provide constraints for physics-based data inversion processing.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: November 5, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sushil Shetty, John Rasmus, Christopher Edward Morriss, Koji Ito, Shahzad Asif, Vittorio Picco
  • Publication number: 20190293834
    Abstract: Methods and systems for augmented geological service characterization are described. An embodiment of a method includes generating a geological service characterization process in response to one or more geological service objectives and a geological service experience information set. Such a method may also include augmenting the geological service characterization process by machine learning in response to a training information set. Additionally, the method may include generating an augmented geological service characterization process in response to the determination information.
    Type: Application
    Filed: June 12, 2019
    Publication date: September 26, 2019
    Inventors: Shashi MENON, Aria ABUBAKAR, Vikas JAIN, David Furse ALLEN, John RASMUS, John Paul HORKOWITZ, Valerian GUILLOT, Florent D'HALLUIN, Ridvan AKKURT, Sylvain WLODARCZYK
  • Patent number: 10386529
    Abstract: A method for determining a level of organic maturity of a shale gas formation includes inverting multifrequency complex conductivity data to estimate a volume fraction of graphite, turbostatic carbon nanostructures, and pyrite. The inversion is validated using estimates of the volume fraction of graphite, turbostatic carbon nanostructures, and pyrite. The volume fraction of graphite and turbostatic carbon nanostructures is correlated to a level of organic maturity log of the shale gas formation. The level of organic maturity log is validated using sulfur content obtained from pyrolysis or vitrinite reflectance. A variation of an electromagnetic response due to the volume fraction of graphite, turbostatic carbon nanostructures, and pyrite is quantified. The electromagnetic response is modified by removing the quantified variation to obtain resistivity and permittivity values.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: August 20, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Siddharth Misra, John Rasmus, Dean Homan, Carlos Torres-Verdin
  • Publication number: 20190235122
    Abstract: Methods may include emplacing a resistivity logging tool in a borehole; stimulating an interval of the formation in the borehole; obtaining at least one resistivity log of the interval of the formation, wherein the resistivity log comprises a survey of one or more depths into the formation; determining a radial invasion of the stimulating fluid into the interval of the formation; and inverting the radial invasion to obtain an input and entering the input into an effective medium model; solving the effective medium model and generating an effective wormhole radius profile and thickness for the interval of the formation.
    Type: Application
    Filed: February 1, 2019
    Publication date: August 1, 2019
    Inventors: Dean Homan, John Rasmus, Gallyam Aidagulov, Harold Pfutzner
  • Patent number: 10360282
    Abstract: A method and system for evaluation of a hydrocarbon-bearing shale formation employs a data processing system that defines a response model that relates first data representing measured petrophysical properties of the shale formation at a given location to second data representing volume fractions for a particular set of formation components at the given location. The first data includes hydrogen index at the given location, and the particular set of formation components of the second data include a number of mineral components and a number of hydrocarbon-bearing components. The hydrocarbon-bearing components include at least one kerogen component. A computation solver processes the response model along with the first data to solve for the second data. The solved second data representing the volume fraction of the at least one kerogen component is processed to derive at least one ratio that is indicative of kerogen maturity at the given location.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: July 23, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: John Rasmus, Richard E. Lewis, David Handwerger, Jack LaVigne
  • Publication number: 20190219558
    Abstract: A method can include receiving measurements of a fluid mixture where the measurements are acquired by at least one downhole tool; performing a multiphysics inversion of the measurements to generate nuclear parameter values for the fluid mixture; performing a multivariate interpolation using the generated nuclear parameter values that accounts for intermolecular interactions in the fluid mixture; and determining a composition of the fluid mixture based on the multivariate interpolation.
    Type: Application
    Filed: January 17, 2019
    Publication date: July 18, 2019
    Inventors: Vitor Villar De Andrade E Silva, John Rasmus
  • Patent number: 10330618
    Abstract: A method to estimate water saturation in electromagnetic measurements includes making an electromagnetic measurement and performing at least one of (a) creating an analytical forward model of the EM measurement, (b) creating a numerical finite difference forward model of the EM measurement, and (c) performing an inversion. The method also includes removing at least one petrophysically-adverse alteration of EM measurements in the frequency range from 1 Hz to 100 MHz. A petrophysically-adverse alteration is due to the presence of at least one of the following: pyrite, graphitic-precursors, magnetite, and other conductive minerals.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: June 25, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Siddharth Misra, John Rasmus, Dean Homan
  • Publication number: 20190129056
    Abstract: A formation characterization system can include a processor; memory accessibly by the processor; instructions stored in the memory and executable by the processor to instruct the system to: acquire induction measurements in a borehole in a formation using an induction tool; determine dielectric properties of the formation using the induction measurements; and generate a log that characterizes particles in the formation based on the dielectric properties.
    Type: Application
    Filed: October 29, 2018
    Publication date: May 2, 2019
    Inventors: John Rasmus, Gong Li Wang, Dean M. Homan, Natalie Uschner-Arroyo
  • Patent number: 10190407
    Abstract: A method for evaluating inflow or outflow in a subterranean wellbore includes acquiring first and second axially spaced pressure measurements in the wellbore. The pressure measurements may then be processed to obtain an interval density of drilling fluid between the measurement locations. A tool string including a large number of axially spaced pressure sensors (e.g., four or more or even six or more) electronically coupled with a surface processor via wired drill pipe may be used to obtain a plurality of interval densities corresponding to various wellbore intervals. The interval density may be measured during static conditions or while drilling and may be further processed to compute a density of an inflow constituent in the annulus. Changes in the computed interval density with time may be used as an indicator of either an inflow event or an outflow event.
    Type: Grant
    Filed: June 22, 2016
    Date of Patent: January 29, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: John Rasmus, William Lesso, John James
  • Publication number: 20180372905
    Abstract: An electromagnetic measurement tool for making multi-frequency, full tensor, complex, electromagnetic measurements includes a triaxial transmitter and a triaxial receiver deployed on a tubular member. An electronic module is configured to obtain electromagnetic measurements at four or more distinct frequencies. The measurement tool may be used for various applications including obtaining a resistivity of sand layers in an alternating shale-sand formation; computing a dielectric permittivity, a conductivity anisotropy, and/or a permittivity anisotropy of a formation sample; and/or identifying formation mineralization including discriminating between pyrite and graphite inclusions and/or computing weight percent graphite and/or pyrite in the formation sample.
    Type: Application
    Filed: September 4, 2018
    Publication date: December 27, 2018
    Inventors: Dean M. Homan, John Rasmus, Gerald Minerbo, Siddharth Misra, Aditya Gupta
  • Patent number: 10067257
    Abstract: An electromagnetic measurement tool for making multi-frequency, full tensor, complex, electromagnetic measurements includes a triaxial transmitter and a triaxial receiver deployed on a tubular member. An electronic module is configured to obtain electromagnetic measurements at four or more distinct frequencies. The measurement tool may be used for various applications including obtaining a resistivity of sand layers in an alternating shale-sand formation; computing a dielectric permittivity, a conductivity anisotropy, and/or a permittivity anisotropy of a formation sample; and/or identifying formation mineralization including discriminating between pyrite and graphite inclusions and/or computing weight percent graphite and/or pyrite in the formation sample.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: September 4, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Dean Homan, John Rasmus, Gerald Minerbo, Siddharth Misra, Aditya Gupta
  • Patent number: 10053979
    Abstract: A method of performing a wellbore operation includes: circulating a doped wellbore fluid comprising a non-radioactive doped particulate material in a wellbore; and logging the wellbore with a logging-while-drilling tool to determine at least one characteristic of the doped wellbore fluid. A method of performing a wellbore operation includes: circulating a doped wellbore fluid comprising a non-radioactive doped particulate material in a wellbore; logging the wellbore with a logging tool; and determining a location of at least one fracture by elemental spectroscopy measurements.
    Type: Grant
    Filed: September 23, 2016
    Date of Patent: August 21, 2018
    Assignee: Schlumberger Technology Corporation
    Inventors: John Rasmus, Alex Ahrenst, Ana Peternell, Jeffrey Miles, Martinus Johannes Bernardus Bogaerts
  • Patent number: 10036827
    Abstract: A method for calibrating an electromagnetic core analysis tool is disclosed. The method includes disposing a tilted test loop inside of or outside of a tool having more than one antenna. A uniform test pack, a layered test pack, and an effective media test pack are each disposed in the tool. A signal is induced in a receiver antenna in the tool when a second antenna is energized with a known current of a known frequency. The induced signal is measured and a calibration gain and offset is determined. A corrected signal is produced and compared with the determined signal based on a forward model.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: July 31, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Dean Homan, Siddharth Misra, John Rasmus, Gerald N. Minerbo
  • Publication number: 20180136362
    Abstract: Methods and apparatus for characterizing a subterranean formation traversed by a wellbore including collecting data from the formation using a tool wherein the tool collects data to form an azimuthal image, characterizing a section of the formation comprising data and images acquired in a high angle wellbore section or horizontal wellbore section using a parametric model, and performing an inversion using apparent densities and volumetric photoelectric factor images to build a formation model wherein the inversion is tailored for high angle wellbore sections and/or horizontal wellbore sections.
    Type: Application
    Filed: December 18, 2017
    Publication date: May 17, 2018
    Inventors: Sushil Shetty, Dzevat Omeragic, Tarek M. Habashy, John Rasmus, Jeffrey Miles
  • Publication number: 20180113088
    Abstract: A method to estimate water saturation in electromagnetic measurements includes making an electromagnetic measurement and performing at least one of (a) creating an analytical forward model of the EM measurement, (b) creating a numerical finite difference forward model of the EM measurement, and (c) performing an inversion. The method also includes removing at least one petrophysically-adverse alteration of EM measurements in the frequency range from 1 Hz to 100 MHz. A petrophysically-adverse alteration is due to the presence of at least one of the following: pyrite, graphitic-precursors, magnetite, and other conductive minerals.
    Type: Application
    Filed: April 29, 2016
    Publication date: April 26, 2018
    Inventors: Siddharth Misra, John Rasmus, Dean Homan
  • Publication number: 20180087376
    Abstract: A method of performing a wellbore operation includes: circulating a doped wellbore fluid comprising a non-radioactive doped particulate material in a wellbore; and logging the wellbore with a logging-while-drilling tool to determine at least one characteristic of the doped wellbore fluid. A method of performing a wellbore operation includes: circulating a doped wellbore fluid comprising a non-radioactive doped particulate material in a wellbore; logging the wellbore with a logging tool; and determining a location of at least one fracture by elemental spectroscopy measurements.
    Type: Application
    Filed: September 23, 2016
    Publication date: March 29, 2018
    Inventors: John Rasmus, Alex Ahrenst, Ana Peternell, Jeffrey Miles, Martinus Johannes Bernardus Bogaerts
  • Patent number: 9869792
    Abstract: Methods and apparatus for characterizing a subterranean formation traversed by a wellbore including collecting data from the formation using a tool wherein the tool collects data to form an azimuthal image, characterizing a section of the formation comprising data and images acquired in a high angle wellbore section or horizontal wellbore section using a parametric model, and performing an inversion using apparent densities and volumetric photoelectric factor images to build a formation model wherein the inversion is tailored for high angle wellbore sections and/or horizontal wellbore sections.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: January 16, 2018
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Sushil Shetty, Dzevat Omeragic, Tarek M. Habashy, John Rasmus, Jeffrey Miles