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William E. Preeg
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Journal Article

Joint petrophysical interpretation of multidetector nuclear measurements in the presence of invasion, shoulder-bed, and well-deviation effects

Edwin Ortega, Mathilde Luycx, Carlos Torres-Verdín, William E. Preeg
Published: 07 November 2016
Geophysics (2017) 82 (1): D13–D30.
DOI: https://doi.org/10.1190/geo2016-0037.1
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Inversion-based interpretation of logging-while-drilling gamma-ray spectroscopy measurements

Oyinkansola Ajayi, Carlos Torres-Verdín, William E. Preeg
Published: 16 November 2015
Geophysics (2016) 81 (1): D9–D34.
DOI: https://doi.org/10.1190/geo2015-0293.1
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Fast numerical simulation of logging-while-drilling gamma-ray spectroscopy measurements

Oyinkansola Ajayi, Carlos Torres-Verdín, William E. Preeg
Published: 20 July 2015
Geophysics (2015) 80 (5): D501–D523.
DOI: https://doi.org/10.1190/geo2014-0584.1
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2D inversion-based interpretation of logging-while-drilling thermal-neutron and gamma-ray time decays

Edwin Ortega, Carlos Torres-Verdín, William E. Preeg
Published: 03 April 2015
Geophysics (2015) 80 (3): D247–D263.
DOI: https://doi.org/10.1190/geo2014-0336.1
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1D radial inversion of multidetector logging-while-drilling Sigma measurements

Edwin Ortega, Carlos Torres-Verdín, William E. Preeg, Jeffrey Miles
Published: 17 September 2014
Geophysics (2014) 79 (5): D363–D384.
DOI: https://doi.org/10.1190/geo2014-0128.1
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Rapid forward modeling of multidetector logging-while-drilling Sigma measurements

Edwin Ortega, Carlos Torres-Verdín, William E. Preeg
Published: 04 July 2014
Geophysics (2014) 79 (4): D253–D273.
DOI: https://doi.org/10.1190/geo2014-0031.1
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Field examples of the joint petrophysical inversion of resistivity and nuclear measurements acquired in high-angle and horizontal wells

Olabode Ijasan, Carlos Torres-Verdín, William E. Preeg, John Rasmus, Edward Stockhausen
Published: 28 March 2014
Geophysics (2014) 79 (3): D145–D159.
DOI: https://doi.org/10.1190/geo2013-0355.1
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Inversion-based petrophysical interpretation of logging-while-drilling nuclear and resistivity measurements

Olabode Ijasan, Carlos Torres-Verdín, William E. Preeg
Published: 09 October 2013
Geophysics (2013) 78 (6): D473–D489.
DOI: https://doi.org/10.1190/geo2013-0175.1
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Improved estimation of mineral and fluid volumetric concentrations in thinly bedded carbonate formations

Zoya Heidari, Carlos Torres-Verdín, William E. Preeg
Published: 28 June 2013
Geophysics (2013) 78 (4): D261–D269.
DOI: https://doi.org/10.1190/geo2012-0438.1
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Fast modeling of borehole neutron porosity measurements with a new spatial transport-diffusion approximation

Olabode Ijasan, Carlos Torres-Verdín, William E. Preeg
Published: 02 May 2013
Geophysics (2013) 78 (3): D151–D168.
DOI: https://doi.org/10.1190/geo2012-0433.1
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Inversion-based method for interpretation of logging-while-drilling density measurements acquired in high-angle and horizontal wells

Alberto Mendoza, Olabode Ijasan, Carlos Torres-Verdín, William E. Preeg, John Rasmus, R. J. Radtke, Edward Stockhausen
Published: 20 June 2012
Geophysics (2012) 77 (4): D113–D127.
DOI: https://doi.org/10.1190/geo2012-0002.1
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Improved estimation of mineral and fluid volumetric concentrations from well logs in thinly bedded and invaded formations

Zoya Heidari, Carlos Torres-Verdín, William E. Preeg
Published: 10 May 2012
Geophysics (2012) 77 (3): WA79–WA98.
DOI: https://doi.org/10.1190/geo2011-0454.1
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Quantitative interpretation of pulsed neutron capture logs: Part 1 — Fast numerical simulation

Jordan G. Mimoun, Carlos Torres-Verdín, William E. Preeg
Published: 20 May 2011
Geophysics (2011) 76 (3): E81–E93.
DOI: https://doi.org/10.1190/1.3569600
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Quantitative interpretation of pulsed neutron capture logs: Part 2 — Inversion of measurements in thinly bedded formations

Jordan G. Mimoun, Carlos Torres-Verdín, William E. Preeg
Published: 16 May 2011
Geophysics (2011) 76 (3): E95–E103.
DOI: https://doi.org/10.1190/1.3569111
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