Patents by Inventor Larry A. Jacobson
Larry A. Jacobson 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: 10145978Abstract: Determining a value indicative of hydrogen index. At least some of the example embodiments are methods including obtaining an inelastic count rate and a capture count rate of a first gamma detector for a particular borehole depth, obtaining an inelastic count rate and a capture count rate of a second gamma detector for the particular borehole depth, calculating a ratio of an inelastic count rate to a capture count rate for the first gamma detector, thereby creating a first value, calculating a ratio of an inelastic count rate to a capture count rate for the second gamma detector, thereby creating a second value, calculating a ratio of the first and second values, and determining a value indicative of hydrogen index based on the ratio of the first and second values.Type: GrantFiled: April 10, 2013Date of Patent: December 4, 2018Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: Weijun Guo, Larry A. Jacobson
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Patent number: 9840912Abstract: A method, in some embodiments, comprises lowering a neutron wireline tool into a cased borehole containing casing fluid, determining a ratio of inelastic count rate to capture count rate using gammas passing through the casing fluid, and calculating a capture cross section of the casing fluid using the ratio.Type: GrantFiled: October 28, 2014Date of Patent: December 12, 2017Assignee: HALLIBURTON ENERGY SERVICES, INC.Inventors: Larry A. Jacobson, Weijun Guo
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Publication number: 20170211382Abstract: A method, in some embodiments, comprises lowering a neutron wireline tool into a cased borehole containing casing fluid, determining a ratio of inelastic count rate to capture count rate using gammas passing through the casing fluid, and calculating a capture cross section of the casing fluid using the ratio.Type: ApplicationFiled: October 28, 2014Publication date: July 27, 2017Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Larry A. Jacobson, Weijun Guo
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Patent number: 9389335Abstract: Methods for determining a value indicative of liquid density of a formation include obtaining an inelastic count rate and a capture count rate of a gamma detector for a particular borehole depth, calculating a ratio of an inelastic count rate to a capture count rate for the particular borehole depth, determining a value indicative of liquid density based on the ratio of the inelastic count rate to the capture count rate for the particular borehole depth, repeating the obtaining, calculating and determining for a plurality of borehole depths, and producing a plot of the value indicative of liquid density of the formation as a function of borehole depth.Type: GrantFiled: May 17, 2013Date of Patent: July 12, 2016Assignee: Halliburton Energy Services, Inc.Inventors: Larry Jacobson, Weijun Guo
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Patent number: 8996315Abstract: Determining a value indicative of gas saturation of a formation. At least some of the illustrative embodiments are methods including: obtaining an inelastic count rate and a capture count rate of a gamma detector for a particular borehole depth; removing at least a portion of the chlorine response from the capture count rate, thereby creating a modified capture count rate; calculating a ratio of an inelastic count rate to the modified capture count rate for the particular borehole depth; determining a value indicative of gas saturation based on the ratio; and producing a plot of the value indicative of gas saturation as a function of borehole depth for a formation that the borehole at least partially penetrates.Type: GrantFiled: June 18, 2012Date of Patent: March 31, 2015Assignee: Halliburton Energy Services, Inc.Inventors: Weijun Guo, Larry A. Jacobson, Daniel F. Dorffer
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Publication number: 20150083905Abstract: Methods for determining a value indicative of liquid density of a formation include obtaining an inelastic count rate and a capture count rate of a gamma detector for a particular borehole depth, calculating a ratio of an inelastic count rate to a capture count rate for the particular borehole depth, determining a value indicative of liquid density based on the ratio of the inelastic count rate to the capture count rate for the particular borehole depth, repeating the obtaining, calculating and determining for a plurality of borehole depths, and producing a plot of the value indicative of liquid density of the formation as a function of borehole depth.Type: ApplicationFiled: May 17, 2013Publication date: March 26, 2015Inventors: Larry Jacobson, Weijun Guo
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Publication number: 20150046091Abstract: Determining a value indicative of hydrogen index. At least some of the example embodiments are methods including obtaining an inelastic count rate and a capture count rate of a first gamma detector for a particular borehole depth, obtaining an inelastic count rate and a capture count rate of a second gamma detector for the particular borehole depth, calculating a ratio of an inelastic count rate to a capture count rate for the first gamma detector, thereby creating a first value, calculating a ratio of an inelastic count rate to a capture count rate for the second gamma detector, thereby creating a second value, calculating a ratio of the first and second values, and determining a value indicative of hydrogen index based on the ratio of the first and second values.Type: ApplicationFiled: April 10, 2013Publication date: February 12, 2015Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Weijun Guo, Larry A. Jacobson
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Patent number: 8898045Abstract: Predicting gas saturation of a formation using neural networks. At least some of the illustrative embodiments include obtaining a gamma count rate decay curve one each for a plurality of gamma detectors of a nuclear logging tool (the gamma count rate decay curves recorded at a particular borehole depth), applying at least a portion of each gamma count rate decay curve to input nodes of a neural network, predicting a value indicative of gas saturation of a formation (the predicting by the neural network in the absence of a formation porosity value supplied to the neural network), and producing a plot of the value indicative of gas saturation of the formation as a function of borehole depth.Type: GrantFiled: April 21, 2009Date of Patent: November 25, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Dingding Chen, Weijun Guo, Larry A. Jacobson
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Publication number: 20140142856Abstract: Determining a value indicative of gas saturation of a formation. At least some of the illustrative embodiments are methods including: obtaining an inelastic count rate and a capture count rate of a gamma detector for a particular borehole depth; removing at least a portion of the chlorine response from the capture count rate, thereby creating a modified capture count rate; calculating a ratio of an inelastic count rate to the modified capture count rate for the particular borehole depth; determining a value indicative of gas saturation based on the ratio; and producing a plot of the value indicative of gas saturation as a function of borehole depth for a formation that the borehole at least partially penetrates.Type: ApplicationFiled: June 18, 2012Publication date: May 22, 2014Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Weijun Guo, Larry A. Jacobson, Daniel F. Dorffer
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Patent number: 8660796Abstract: Processing gamma count rate decay curves using neural networks. At least some of the illustrative embodiments are methods comprising obtaining a gamma count rate decay curve one each for a plurality of gamma detectors of a nuclear logging tool (the gamma count rate decay curves recorded at a particular borehole depth), applying the gamma count rate decay curves to input nodes of a neural network, predicting by the neural network a geophysical parameter of the formation surrounding the borehole, repeating the obtaining, applying and predicting for a plurality of borehole depths, and producing a plot of the geophysical parameter of the formation as a function of borehole depth.Type: GrantFiled: August 26, 2008Date of Patent: February 25, 2014Assignee: Halliburton Energy Services, Inc.Inventors: Larry A. Jacobson, Dingding Chen, John A. Quirein
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Patent number: 8346481Abstract: Determining a value indicative of gas saturation of a formation. At least some of the illustrative embodiments are methods including obtaining an inelastic count rate and a capture count rate of a gamma detector for a particular borehole depth, calculating a ratio of an inelastic count rate to a capture count rate for the particular borehole depth, determining a value indicative of gas saturation based on the ratio of the inelastic count rate to the capture count rate for the particular borehole depth, repeating the obtaining, calculating and determining for a plurality of borehole depths, and producing a plot of the value indicative of gas saturation of the formation as a function of borehole depth.Type: GrantFiled: December 15, 2008Date of Patent: January 1, 2013Assignee: Halliburton Energy Services, Inc.Inventors: Larry A. Jacobson, Weijun Guo, Jerome A. Truax, Daniel F. Dorffer
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Publication number: 20110282818Abstract: Predicting gas saturation of a formation using neural networks. At least some of the illustrative embodiments include obtaining a gamma count rate decay curve one each for a plurality of gamma detectors of a nuclear logging tool (the gamma count rate decay curves recorded at a particular borehole depth), applying at least a portion of each gamma count rate decay curve to input nodes of a neural network, predicting a value indicative of gas saturation of a formation (the predicting by the neural network in the absence of a formation porosity value supplied to the neural network), and producing a plot of the value indicative of gas saturation of the formation as a function of borehole depth.Type: ApplicationFiled: April 21, 2009Publication date: November 17, 2011Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Dingding Chen, Weijun Guo, Larry A. Jacobson
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Patent number: 8050866Abstract: A method and related system of determining formation density by compensating actual inelastic gamma rays detected from a pulsed-neutron tool for the effects of neutron transport. The method and systems may model response of the tool and use the modeled response as an indication of an amount to compensate detected inelastic gamma rays.Type: GrantFiled: August 28, 2006Date of Patent: November 1, 2011Assignee: Halliburton Energy Services, Inc.Inventor: Larry A Jacobson
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Patent number: 8044342Abstract: A method and system for calculating extent of a formation treatment material in a formation. At least some of the illustrative embodiments are methods comprising releasing neutrons into a formation from a neutron source of a logging tool within a borehole having an axis, sensing energies of gammas produced by materials in the formation, the sensing by a gamma detector on the logging tool, generating a measured spectrum of the energies of the gammas sensed by the gamma detector, determining elemental concentrations of materials in the formation based on a basis spectrum, and calculating axial extent of a formation treatment material in the formation in relation to the axis of the borehole based on the elemental concentrations of at least some materials in the formation.Type: GrantFiled: March 4, 2009Date of Patent: October 25, 2011Assignee: Halliburton Energy Services, Inc.Inventors: James E. Galford, Larry A. Jacobson, Jerome A. Truax
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Publication number: 20110137566Abstract: Processing gamma count rate decay curves using neural networks. At least some of the illustrative embodiments are methods comprising obtaining a gamma count rate decay curve one each for a plurality of gamma detectors of a nuclear logging tool (the gamma count rate decay curves recorded at a particular borehole depth), applying the gamma count rate decay curves to input nodes of a neural network, predicting by the neural network a geophysical parameter of the formation surrounding the borehole, repeating the obtaining, applying and predicting for a plurality of borehole depths, and producing a plot of the geophysical parameter of the formation as a function of borehole depth.Type: ApplicationFiled: August 26, 2008Publication date: June 9, 2011Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Larry A. Jacobson, Dingding Chen, John A. Quirein
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Publication number: 20100292927Abstract: Determining a value indicative of gas saturation of a formation. At least some of the illustrative embodiments are methods including obtaining an inelastic count rate and a capture count rate of a gamma detector for a particular borehole depth, calculating a ratio of an inelastic count rate to a capture count rate for the particular borehole depth, determining a value indicative of gas saturation based on the ratio of the inelastic count rate to the capture count rate for the particular borehole depth, repeating the obtaining, calculating and determining for a plurality of borehole depths, and producing a plot of the value indicative of gas saturation of the formation as a function of borehole depth.Type: ApplicationFiled: December 15, 2008Publication date: November 18, 2010Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: Larry A. Jacobson, Weijun Guo, Jerome A. Truax, Daniel F. Dorffer
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Publication number: 20100224773Abstract: A method and system for calculating extent of a formation treatment material in a formation. At least some of the illustrative embodiments are methods comprising releasing neutrons into a formation from a neutron source of a logging tool within a borehole having an axis, sensing energies of gammas produced by materials in the formation, the sensing by a gamma detector on the logging tool, generating a measured spectrum of the energies of the gammas sensed by the gamma detector, determining elemental concentrations of materials in the formation based on a basis spectrum, and calculating axial extent of a formation treatment material in the formation in relation to the axis of the borehole based on the elemental concentrations of at least some materials in the formation.Type: ApplicationFiled: March 4, 2009Publication date: September 9, 2010Applicant: HALLIBURTON ENERGY SERVICES, INC.Inventors: James E. Galford, Larry A. Jacobson, Jerome A. Truax
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Publication number: 20060284066Abstract: A method and related system of determining formation density by compensating actual inelastic gamma rays detected from a pulsed-neutron tool for the effects of neutron transport. The method and systems may model response of the tool and use the modeled response as an indication of an amount to compensate detected inelastic gamma rays.Type: ApplicationFiled: August 28, 2006Publication date: December 21, 2006Applicant: Halliburton Energy Services, Inc.Inventor: Larry Jacobson
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Patent number: 7117092Abstract: A method and related system of determining formation density by compensating actual inelastic gamma rays detected from a pulsed-neutron tool for the effects of neutron transport. The method and systems may model response of the tool and use the modeled response as an indication of an amount to compensate detected inelastic gamma rays.Type: GrantFiled: September 25, 2003Date of Patent: October 3, 2006Assignee: Halliburton Energy Services, Inc.Inventor: Larry A. Jacobson
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Publication number: 20050067160Abstract: A method and related system of determining formation density by compensating actual inelastic gamma rays detected from a pulsed-neutron tool for the effects of neutron transport. The method and systems may model response of the tool and use the modeled response as an indication of an amount to compensate detected inelastic gamma rays.Type: ApplicationFiled: September 25, 2003Publication date: March 31, 2005Applicant: Halliburton Energy Services, Inc.Inventor: Larry Jacobson