Patents by Inventor Kais Gzara
Kais Gzara 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: 10571600Abstract: A method for estimation of water properties and hydrocarbon properties in a subsurface formation include acquiring a plurality of well log measurements from the subsurface formation. The water properties and the formation properties are parameterized with respect to a selected set of well log measurements. The parameterized water properties, the parameterized formation properties and the well log measurements are graphically displayed to estimate the water properties.Type: GrantFiled: September 29, 2014Date of Patent: February 25, 2020Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Chanh Cao Minh, Kais Gzara, Roger Griffiths
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Patent number: 10422221Abstract: A method for determining a volume of a constituent(s) in a geological formation may include generating an equation of state based upon log measurements for the geological formation, with the equation of state providing a correlation between the log measurements, determining a quality factor for the equation of state, and for each of a plurality of different constituents expected to be in the formation, determining a constituent compliance factor for each of the constituents. The method may further include determining an uncertainty for each constituent compliance factor, determining a likelihood that each constituent is present in the formation based upon the quality factor, the constituent compliance factor for the constituent, and the uncertainty for the constituent compliance factor, generating a volumetric model based upon the log measurements and the determined likelihoods of the constituents in the formation, and determining the volume of the constituent(s) based upon the volumetric model.Type: GrantFiled: September 16, 2014Date of Patent: September 24, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Kais Gzara, Vikas Jain, Chanh Cao Minh, Roger Griffiths
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Patent number: 10400594Abstract: A method for generating a model of a formation property includes acquiring a formation property measurement. A petrophysical quantity is inverted from the formation property measurement. A model is generated based on the inverted petrophysical quantity.Type: GrantFiled: December 16, 2015Date of Patent: September 3, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Vikas Jain, Kais Gzara, Chanh Cao Minh, Roger Griffiths
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Patent number: 10385677Abstract: A method for determining volumetric data for fluid within a geological formation is provided. The method includes collecting first and second dataset snapshots of the geological formation based upon measurements from the borehole at respective different first and second times and generating a differential dataset based upon the first and second dataset snapshots. Multiple points are determined within the differential dataset, including a first point representing a first displaced fluid, a second point representing a second displaced fluid, and an injected fluid point that corresponds to properties of the injected fluid. A further third point is determined based on at least one other property of the displaced fluid, and a volumetric composition of the displaced fluids is determined based upon the differential dataset, the first point, and second point, and third point.Type: GrantFiled: March 15, 2013Date of Patent: August 20, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Kais Gzara, Vikas Jain, Alan Patrick Hibler
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Patent number: 10359532Abstract: A method for analyzing at least one characteristic of a geological formation may include obtaining measured data for the geological formation based upon a logging tool. Measured data may come from multiple passes or multiple depths of investigation. The method may further include generating a kernel describing a known linear mapping between the measured data and unknown data points representing at least one characteristic of the geological formation, and a redundant dictionary including a plurality of different basis functions expected to span the solution space of the unknown data points. The unknown data points representing the at least one characteristic of the geological formation may be determined from the measured data, the kernel and the redundant dictionary based upon an L1 minimization.Type: GrantFiled: December 2, 2015Date of Patent: July 23, 2019Assignee: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Vikas Jain, Kais Gzara
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Publication number: 20160230548Abstract: A method for determining a volume of a constituent(s) in a geological formation may include generating an equation of state based upon log measurements for the geological formation, with the equation of state providing a correlation between the log measurements, determining a quality factor for the equation of state, and for each of a plurality of different constituents expected to be in the formation, determining a constituent compliance factor for each of the constituents. The method may further include determining an uncertainty for each constituent compliance factor, determining a likelihood that each constituent is present in the formation based upon the quality factor, the constituent compliance factor for the constituent, and the uncertainty for the constituent compliance factor, generating a volumetric model based upon the log measurements and the determined likelihoods of the constituents in the formation, and determining the volume of the constituent(s) based upon the volumetric model.Type: ApplicationFiled: September 16, 2014Publication date: August 11, 2016Inventors: Kais Gzara, Vikas Jain, Chanh Cao Minh, Roger Griffiths
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Publication number: 20160178546Abstract: A method for generating a model of a formation property includes acquiring a formation property measurement. A petrophysical quantity is inverted from the formation property measurement. A model is generated based on the inverted petrophysical quantity.Type: ApplicationFiled: December 16, 2015Publication date: June 23, 2016Inventors: Vikas Jain, Kais Gzara, Chanh Cao Minh, Roger Griffiths
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Publication number: 20160170065Abstract: A method for analyzing at least one characteristic of a geological formation may include obtaining measured data for the geological formation based upon a logging tool. Measured data may come from multiple passes or multiple depths of investigation. The method may further include generating a kernel describing a known linear mapping between the measured data and unknown data points representing at least one characteristic of the geological formation, and a redundant dictionary including a plurality of different basis functions expected to span the solution space of the unknown data points. The unknown data points representing the at least one characteristic of the geological formation may be determined from the measured data, the kernel and the redundant dictionary based upon an L1 minimization.Type: ApplicationFiled: December 2, 2015Publication date: June 16, 2016Inventors: Vikas Jain, Kais Gzara
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Patent number: 9223055Abstract: A method of interpreting petrophysical measurement data include arranging measurements of at least one physical property of formations into a matrix representing the measurements and selecting a range of number of unobserved factors or latent variables for factor analysis. Factor analysis is performed on the measurement matrix and comprises performing factorization of measurements matrix into a number of factorsand performing rotation of the factorization results. Whether the factor loadings for each factor have achieved a “simple structure” is determined and either each of the selected number of factors is associated with a physical parameter of the formations, or one is added to the number of factors and factor analysis and rotation are repeated until factor loadings of all factors have achieved “simple structure” such that the each of the number of factors is associated with a physical property of the formations.Type: GrantFiled: October 23, 2012Date of Patent: December 29, 2015Assignee: Schlumberger Technology CorporationInventors: Vikas Jain, Chanh Cao Minh, Denis Heliot, Nicholas Heaton, Kais Gzara
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Patent number: 8711655Abstract: An apparatus and a method for characterizing parts of a reservoir surrounding a borehole are provided including using at least one transmitter to emit a probing signal into the borehole and at least one receiver to receive a signal representing a response of the formation to the probing signal, with the distance separating the transmitter and the receiver being variable while suspended in the borehole using for example an apparatus which can be decoupled in the borehole into a stationary and a mobile section, carrying transmitter and receiver.Type: GrantFiled: March 17, 2009Date of Patent: April 29, 2014Assignee: Schlumberger Technology CorporationInventors: Kais Gzara, Kamal Babour, Michael Wilt, Ahmed El-Banbi
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Publication number: 20140114576Abstract: A method of interpreting petrophysical measurement data include arranging measurements of at least one physical property of formations into a matrix representing the measurements and selecting a range of number of unobserved factors or latent variables for factor analysis. Factor analysis is performed on the measurement matrix and comprises performing factorization of measurements matrix into a number of factors and performing rotation of the factorization results. Whether the factor loadings for each factor have achieved a “simple structure” is determined and either each of the selected number of factors is associated with a physical parameter of the formations, or one is added to the number of factors and factor analysis and rotation are repeated until factor loadings of all factors have achieved “simple structure” such that the each of the number of factors is associated with a physical property of the formations.Type: ApplicationFiled: October 23, 2012Publication date: April 24, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Vikas Jain, Chanh Cao Minh, Denis Heliot, Nicholas Heaton, Kais Gzara
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Publication number: 20130338926Abstract: A method for determining volumetric data for fluid within a geological formation is provided. The method includes collecting first and second dataset snapshots of the geological formation based upon measurements from the borehole at respective different first and second times and generating a differential dataset based upon the first and second dataset snapshots. Multiple points are determined within the differential dataset, including a first point representing a first displaced fluid, a second point representing a second displaced fluid, and an injected fluid point that corresponds to properties of the injected fluid. A further third point is determined based on at least one other property of the displaced fluid, and a volumetric composition of the displaced fluids is determined based upon the differential dataset, the first point, and second point, and third point.Type: ApplicationFiled: March 15, 2013Publication date: December 19, 2013Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Kais Gzara, Vikas Jain, Alan Patrick Hibler
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Publication number: 20130268201Abstract: A method for determining compositional data for fluids within a geological formation having a borehole therein may include collecting first and second dataset snapshots of the geological formation based upon measurements from the borehole at respective different first and second times, and with the borehole subject to fluid injection between the first and second times to displace fluids in the geological formation adjacent the borehole. The method may further include generating a differential dataset based upon the first and second dataset snapshots, normalizing the differential dataset to generate a normalized differential dataset, determining vertices defining a geometric shape and corresponding to respective different displaced fluid signatures based upon the normalized differential dataset, and determining displaced compositional data with respect to the different displaced fluid signatures based upon a position of a datapoint from the normalized differential dataset on the geometric shape.Type: ApplicationFiled: March 15, 2013Publication date: October 10, 2013Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Kais Gzara, Vikas Jain, Alan Patrick Hibler
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Patent number: 8005618Abstract: A logging-while-drilling system for efficiently providing a reliable measurement of various petrophysical properties of subsurface earth formations.Type: GrantFiled: January 9, 2008Date of Patent: August 23, 2011Assignee: Schlumberger Technology CorporationInventor: Kaïs Gzara
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Publication number: 20100238763Abstract: An apparatus and a method for characterizing parts of a reservoir surrounding a borehole are provided including using at least one transmitter to emit a probing signal into the borehole and at least one receiver to receive a signal representing a response of the formation to the probing signal, with the distance separating the transmitter and the receiver being variable while suspended in the borehole using for example an apparatus which can be decoupled in the borehole into a stationary and a mobile section, carrying transmitter and receiver.Type: ApplicationFiled: March 17, 2009Publication date: September 23, 2010Applicant: Schlumberger Technology CorporationInventors: Kais Gzara, Kamal Babour, Michael Wilt, Ahmed El-Banbi
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Publication number: 20090177403Abstract: A logging-while-drilling system for efficiently providing a reliable measurement of various petrophysical properties of subsurface earth formations.Type: ApplicationFiled: January 9, 2008Publication date: July 9, 2009Inventor: Kais Gzara
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Patent number: 7134492Abstract: Hydraulic fracture dimensions and, optionally, fracture closure pressure and time are determined by adding particulate matter that discharges to create an acoustic signal to the proppant, allowing the particulate matter to discharge, and detecting the acoustic signal with geophones or accelerometers. The particulate matter may be spheres or fibers. The discharge may be explosion, implosion, detonation, or rapid combustion or ignition. The discharge may be triggered by fracture closure or by chemical reaction.Type: GrantFiled: April 14, 2004Date of Patent: November 14, 2006Assignee: Schlumberger Technology CorporationInventors: Dean Willberg, Jean Desroches, Kamal Babour, Kais Gzara, Christian Besson
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Publication number: 20040226715Abstract: Hydraulic fracture dimensions and, optionally, fracture closure pressure and time are determined by adding particulate matter that discharges to create an acoustic signal to the proppant, allowing the particulate matter to discharge, and detecting the acoustic signal with geophones or accelerometers. The particulate matter may be spheres or fibers. The discharge may be explosion, implosion, detonation, or rapid combustion or ignition. The discharge may be triggered by fracture closure or by chemical reaction.Type: ApplicationFiled: April 14, 2004Publication date: November 18, 2004Inventors: Dean Willberg, Jean Desroches, Kamal Babour, Kais Gzara, Christian Besson
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Patent number: 6768106Abstract: A method comprising determining a characteristic of a mud mixture surrounding a drilling tool within an inclined borehole in which a drilling tool is conveyed. The method includes defining a cross-section of the tool which is orthogonal to a longitudinal axis of the tool. A bottom contact point of the cross-section of the tool is determined, which contacts the inclined borehole as the tool rotates in the borehole. The cross-section is separated into at least two segments, where one of the segments is called a bottom segment of the borehole which includes the bottom contact point of the cross-section of the tool with the inclined borehole. The tool is turned in the borehole. Energy is applied into the borehole from an energy source disposed in the tool, as the tool is turning in the borehole.Type: GrantFiled: September 21, 2001Date of Patent: July 27, 2004Assignee: Schlumberger Technology CorporationInventors: Kais Gzara, Iain M. Cooper
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Publication number: 20030057366Abstract: A method comprising determining a characteristic of a mud mixture surrounding a drilling tool within an inclined borehole in which a drilling tool is conveyed. The method includes defining a cross-section of the tool which is orthogonal to a longitudinal axis of the tool. A bottom contact point of the cross-section of the tool is determined, which contacts the inclined borehole as the tool rotates in the borehole. The cross-section is separated into at least two segments, where one of the segments is called a bottom segment of the borehole which includes the bottom contact point of the cross-section of the tool with the inclined borehole. The tool is turned in the borehole. Energy is applied into the borehole from an energy source disposed in the tool, as the tool is turning in the borehole.Type: ApplicationFiled: September 21, 2001Publication date: March 27, 2003Inventors: Kais Gzara, Iain Cooper