Patents by Inventor John C. Rasmus
John C. 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).
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Patent number: 10451769Abstract: A method for transforming a 2D or 3D earth volume geometry into a 1D earth volume geometry includes performing a measurement using the measurement sensor in a wellbore. A layer boundary in the 2D or 3D earth volume geometry that is nearest to the measurement sensor is identified. A vector from the measurement sensor is generated toward the nearest layer boundary. A first intersection is identified between the vector and the nearest layer boundary, and a second intersection is identified between the vector and another layer boundary. Simulated boundaries that extend through the first and second intersections and are perpendicular to the vector are generated. The 1D earth volume geometry that is bounded by the first and second intersections is identified. A property value is extracted from the 2D or 3D earth volume geometry between the first and second intersections. The property value is assigned to the 1D earth geometry.Type: GrantFiled: January 25, 2016Date of Patent: October 22, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: John C. Rasmus, Christopher E. Morriss, Koji Ito, Hui Xie, Roger Griffiths, Shahzad A. Asif, David Maggs
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Patent number: 9920618Abstract: Systems and methods for identifying formation boundaries without necessarily obtaining an azimuthal borehole image are provided. A downhole tool may be placed in a wellbore in a geological formation that has a formation boundary. First and second measurements may be obtained at a number of depths of the wellbore. The first measurement may have a first effective penetration length into the geological formation and the second measurement may have a second effective penetration length into the geological formation different from the first effective penetration length. Thus, the first measurement may detect the formation boundary at a first depth and the second measurement may detect the formation boundary at a second depth. Using a difference between the first depth and the second depth, an apparent relative angle between the wellbore and the formation boundary or an apparent formation dip, or both, may be obtained.Type: GrantFiled: January 26, 2016Date of Patent: March 20, 2018Assignee: CHEVRON U.S.A. INC.Inventors: Edward Stockhausen, John C. Rasmus
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Publication number: 20160230537Abstract: Systems and methods for identifying formation boundaries without necessarily obtaining an azimuthal borehole image are provided. A downhole tool may be placed in a wellbore in a geological formation that has a formation boundary. First and second measurements may be obtained at a number of depths of the wellbore. The first measurement may have a first effective penetration length into the geological formation and the second measurement may have a second effective penetration length into the geological formation different from the first effective penetration length. Thus, the first measurement may detect the formation boundary at a first depth and the second measurement may detect the formation boundary at a second depth. Using a difference between the first depth and the second depth, an apparent relative angle between the wellbore and the formation boundary or an apparent formation dip, or both, may be obtained.Type: ApplicationFiled: January 26, 2016Publication date: August 11, 2016Inventors: Edward Stockhausen, John C. Rasmus
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Publication number: 20160216405Abstract: A method for transforming a 2D or 3D earth volume geometry into a 1D earth volume geometry includes performing a measurement using the measurement sensor in a wellbore. A layer boundary in the 2D or 3D earth volume geometry that is nearest to the measurement sensor is identified. A vector from the measurement sensor is generated toward the nearest layer boundary. A first intersection is identified between the vector and the nearest layer boundary, and a second intersection is identified between the vector and another layer boundary. Simulated boundaries that extend through the first and second intersections and are perpendicular to the vector are generated. The 1D earth volume geometry that is bounded by the first and second intersections is identified. A property value is extracted from the 2D or 3D earth volume geometry between the first and second intersections. The property value is assigned to the 1D earth geometry.Type: ApplicationFiled: January 25, 2016Publication date: July 28, 2016Inventors: John C. Rasmus, Christopher E. Morriss, Koji Ito, Hui Xie, Roger Griffiths, Shahzad A. Asif, David Maggs
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Patent number: 9175559Abstract: Systems and methods identify and/or detect one or more features of a well casing by utilizing one or more downhole measurements obtainable by a downhole component. The one or more features of the well casing are identifiable and/or detectable from the one or more measurements associated with one or more properties of the one or more features of the well casing. The one or more measurements for indentifying and/or detecting a presence and/or a location of the one or more features of the well casing include sonic measurements, nuclear measurements, gamma ray measurements, photoelectric measurements, resistivity measurements and/or combinations thereof.Type: GrantFiled: October 2, 2009Date of Patent: November 3, 2015Assignee: Schlumberger Technology CorporationInventors: Najmud Dowla, John C. Rasmus, Abhijeet Nayan, Taesoo Kim, Richard J. Radtke, Michael Evans
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Patent number: 9091781Abstract: A method for determining permeability of a subsurface formation includes measuring a parameter related to fluid content of the formation at a first time from within a wellbore penetrating the formation. A rate of entry of fluid from the wellbore into the formation is determined from the measurement of the parameter made at the first time. The permeability is determined from the rate of entry.Type: GrantFiled: June 3, 2009Date of Patent: July 28, 2015Assignee: Schlumberger Technology CorporationInventors: Raphael Altman, John C. Rasmus, Carlos Maeso
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Publication number: 20150176402Abstract: Downhole drilling fluid measurements are made as a function of time or as a function of depth. A change in the downhole drilling fluid measurements is correlated to a feature of a formation penetrated by a drill bit or to a feature of fluids in the formation. The downhole drilling fluid measurements may include density, photoelectric factor, hydrogen index, salinity, thermal neutron capture cross section (Sigma), resistivity, slowness, slowing down time, sound velocity, and elemental composition. The feature may include fluid balance, hole-cleaning, a kick, a shallow water flow, a formation fluid property, formation fluid typing, geosteering, geostopping, or an environmental correction. A downhole system has a measurement-while-drilling tool or a logging-while-drilling tool and a processor capable of obtaining the downhole drilling fluid measurements and correlating the change in the downhole drilling fluid measurements.Type: ApplicationFiled: February 23, 2015Publication date: June 25, 2015Inventors: Ankur Prakash, John C. Rasmus, Richard J. Radtke, Michael L. Evans, Lee Dolman
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Patent number: 9047689Abstract: A method for visualizing parametric logging data includes interpreting logging data sets, each logging data set corresponding to a distinct value of a progression parameter, calculating a geometric image including a representation of data from each of the logging data sets corresponding to a wellbore measured depth, and displaying the geometric image(s) at a position along a well trajectory corresponding to the wellbore measured depth. The progression parameter includes time, a resistivity measurement depth, differing tool modes that are sampling different volumes of investigation, and/or sampling different physical properties. The geometric images include a number of parallel lines having lengths determined according to the logging data and/or an azimuthal projection of the logging data, a number of concentric axial projections, and/or shapelets determined from parallel lines and/or concentric axial projections.Type: GrantFiled: October 15, 2009Date of Patent: June 2, 2015Assignee: Schlumberger Technology CorporationInventors: Christian Stolte, John C. Rasmus, Koji Ito, Shahzad A. Asif, Denis Heliot
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Patent number: 8965703Abstract: Downhole drilling fluid measurements are made as a function of time or as a function of depth. A change in the downhole drilling fluid measurements is correlated to a feature of a formation penetrated by a drill bit or to a feature of fluids in the formation. The downhole drilling fluid measurements may include density, photoelectric factor, hydrogen index, salinity, thermal neutron capture cross section (Sigma), resistivity, slowness, slowing down time, sound velocity, and elemental composition. The feature may include fluid balance, hole-cleaning, a kick, a shallow water flow, a formation fluid property, formation fluid typing, geosteering, geostopping, or an environmental correction. A downhole system has a measurement-while-drilling tool or a logging-while-drilling tool and a processor capable of obtaining the downhole drilling fluid measurements and correlating the change in the downhole drilling fluid measurements.Type: GrantFiled: October 3, 2011Date of Patent: February 24, 2015Assignee: Schlumberger Technology CorporationInventors: Ankur Prakash, John C. Rasmus, Richard J. Radtke, Michael Evans, Lee Dolman
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Patent number: 8899349Abstract: A system and a method may determine formation strength of a well. The system and the method may use pressure measurements and temperature measurements to determine controlled fracture pressures before the uncontrolled fracture pressure is reached. The system and the method may use pressure measurements and temperature measurements to determine closure stresses while drilling and may use the closure stresses with core and log measurements to optimize a hydraulic stimulation program.Type: GrantFiled: July 20, 2012Date of Patent: December 2, 2014Assignee: Schlumberger Technology CorporationInventors: John C. Rasmus, Vladimir Vaynshteyn, Roberto Suarez-Rivera
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Publication number: 20130186688Abstract: A system and a method may determine formation strength of a well. The system and the method may use pressure measurements and temperature measurements to determine controlled fracture pressures before the uncontrolled fracture pressure is reached. The system and the method may use pressure measurements and temperature measurements to determine closure stresses while drilling and may use the closure stresses with core and log measurements to optimize a hydraulic stimulation program.Type: ApplicationFiled: July 20, 2012Publication date: July 25, 2013Inventors: John C. Rasmus, Vladimir Vaynshteyn, Roberto Suarez-Rivera
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Patent number: 8484858Abstract: A drill string caliper includes a mandrel configured to be coupled within a drill string. At least one laterally extensible arm is coupled to an exterior of the mandrel. A biasing device is configured to urge the at least one arm into contact with a wall of a wellbore. A sensor is configured to generate an output signal corresponding to a lateral extent of the at least one arm.Type: GrantFiled: March 7, 2011Date of Patent: July 16, 2013Assignee: Schlumberger Technology CorporationInventors: James C. Brannigan, Raymond V. Nold, III, John C. Rasmus, Fernando Garcia-Osuna, Alexander Zazovsky
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Patent number: 8473212Abstract: A method for processing well logging data includes method dividing the well logging data into a number of constant dimensional effect segments, where each constant dimensional effect segment defines an interval having a similar dimensional effect on the log response. The well logging data is taken from a highly deviated well. The method further includes dividing the constant dimensional effect segments into a number of constant property intervals, each constant dimensional effect segment including at least one corresponding constant property interval, and each constant property interval defining a wellbore distance over which a formation property is substantially constant that results in a log response having a low variance. The method further includes providing the constant property intervals to an output device.Type: GrantFiled: February 25, 2010Date of Patent: June 25, 2013Assignee: Schlumberger Technology CorporationInventors: John C. Rasmus, John P. Horkowitz, Koji Ito, Christian Stolte, Shahzad Asif, Bernadette Tabanou
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Patent number: 8442769Abstract: Various methods are disclosed, comprising obtaining a plurality of raw depth measurements for a wellbore; obtaining survey data about a bottom hole assembly; obtaining depth compensation information; calculating a plurality of compensated depth measurements from the raw depth measurements and the depth compensation information and one or more additional corrections for residual pipe compliance, tide, and rig heave; calculating sag angle and correcting the survey data with the sag angle; determining a high fidelity wellbore trajectory from the compensated depth measurements and the survey data; and then employing the high fidelity wellbore trajectory in various drilling, formation evaluation, and production and reservoir analysis applications. Depth compensation information may comprise at least one of weight on bit, a friction factor, temperature profile, borehole profile, drill string mechanical properties, hookload, and drilling fluid property. The surveys may include both static and continuous surveys.Type: GrantFiled: November 11, 2008Date of Patent: May 14, 2013Assignee: Schlumberger Technology CorporationInventors: Wayne J. Phillips, Georgiy Bordakov, Alexander Kostin, Shyam Mehta, Denis Heliot, John C. Rasmus
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Publication number: 20130085675Abstract: Downhole drilling fluid measurements are made as a function of time or as a function of depth. A change in the downhole drilling fluid measurements is correlated to a feature of a formation penetrated by a drill bit or to a feature of fluids in the formation. The downhole drilling fluid measurements may include density, photoelectric factor, hydrogen index, salinity, thermal neutron capture cross section (Sigma), resistivity, slowness, slowing down time, sound velocity, and elemental composition. The feature may include fluid balance, hole-cleaning, a kick, a shallow water flow, a formation fluid property, formation fluid typing, geosteering, geostopping, or an environmental correction. A downhole system has a measurement-while-drilling tool or a logging-while-drilling tool and a processor capable of obtaining the downhole drilling fluid measurements and correlating the change in the downhole drilling fluid measurements.Type: ApplicationFiled: October 3, 2011Publication date: April 4, 2013Inventors: Ankur Prakash, John C. Rasmus, Richard J. Radtke, Michael Evans, Lee Dolman
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Publication number: 20120201425Abstract: A method for visualizing parametric logging data includes interpreting logging data sets, each logging data set corresponding to a distinct value of a progression parameter, calculating a geometric image including a representation of data from each of the logging data sets corresponding to a wellbore measured depth, and displaying the geometric image(s) at a position along a well trajectory corresponding to the wellbore measured depth. The progression parameter includes time, a resistivity measurement depth, differing tool modes that are sampling different volumes of investigation, and/or sampling different physical properties. The geometric images include a number of parallel lines having lengths determined according to the logging data and/or an azimuthal projection of the logging data, a number of concentric axial projections, and/or shapelets determined from parallel lines and/or concentric axial projections.Type: ApplicationFiled: October 15, 2009Publication date: August 9, 2012Inventors: Christian Stolte, John C. Rasmus, Koji Ito, Shahzad A. Asif, Denis Heliot
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Publication number: 20120188236Abstract: A method includes interpreting first dimensional data such as a caliper log for a wellbore at a first time, and interpreting second dimensional data such as a caliper log for the wellbore at a second time. The method further includes determining a dimensional differential in response to the first dimensional data and the second dimensional data. The dimensional differential includes a volume difference between cross-sectional profiles from the first dimensional data and the second dimensional data. The cross-sectional profiles for comparison may be at a specified axial location or range of axial locations in the wellbore. The method includes graphically displaying the dimensional differential by marking the dimensional differential with a first marker index where the first dimensional data is inside the second dimensional data, and with a second marker index where the first dimensional data is outside the second dimensional data.Type: ApplicationFiled: September 21, 2009Publication date: July 26, 2012Inventors: Fabienne Legendre, Koji Ito, Christian Stolte, John C. Rasmus, Shahzad A. Asif
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Publication number: 20120055711Abstract: A drill string caliper includes a mandrel configured to be coupled within a drill string. At least one laterally extensible arm is coupled to an exterior of the mandrel. A biasing device is configured to urge the at least one arm into contact with a wall of a wellbore. A sensor is configured to generate an output signal corresponding to a lateral extent of the at least one arm.Type: ApplicationFiled: March 7, 2011Publication date: March 8, 2012Inventors: James C. Brannigan, Raymond V. Nold, III, John C. Rasmus, Fernando Garcia-Osuna, Alexander Zazovsky
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Publication number: 20110290011Abstract: Systems and methods identify and/or detect one or more features of a well casing by utilizing one or more downhole measurements obtainable by a downhole component. The one or more features of the well casing are identifiable and/or detectable from the one or more measurements associated with one or more properties of the one or more features of the well casing. The one or more measurements for indentifying and/or detecting a presence and/or a location of the one or more features of the well casing include sonic measurements, nuclear measurements, gamma ray measurements, photoelectric measurements, resistivity measurements and/or combinations thereof.Type: ApplicationFiled: October 2, 2009Publication date: December 1, 2011Inventors: Najmud Dowla, John C. Rasmus, Abhijeet Nayan, Taesoo Kim, Richard J. Radtke, Michael Evans
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Publication number: 20110184711Abstract: A method for determining permeability of a subsurface formation includes measuring a parameter related to fluid content of the formation at a first time from within a wellbore penetrating the formation. A rate of entry of fluid from the wellbore into the formation is determined from the measurement of the parameter made at the first time. The permeability is determined from the rate of entry.Type: ApplicationFiled: June 3, 2009Publication date: July 28, 2011Inventors: Raphael Altman, John C. Rasmus, Carlos Maeso