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Recent Publications
SEG Abstract Integrated Facies Modeling in Unconventional Reservoirs Using a Frequentist Approach: Example from a South Texas Field
Reinaldo J. Michelena, Kevin S. Godbey, and Omar G. Angola (2017). This paper was prepared for presentation at the 2017 SEG 86th Annual International Meeting and published in GEOPHYSICS, Nov-Dec 2017, 82(6), B219-B230.
Available for download from the SEG Library at https://library.seg.org/doi/abs/10.1190/geo2017-0041.1
PDF Download Facies Modeling in Unconventional Reservoirs Using Seismic-Derived Facies Probabilities
Reinaldo Michelena, Omar Angola, Kevin Godbey, iReservoir.com Inc.
This paper was prepared for presentation at the SEG 2016 Conference held in Dallas, Texas, USA, 16-21 Oct 2016.
Available for download from the SEG Library at http://library.seg.org/doi/10.1190/segam2016-13954311.1
SPE 180204
Abstract
Unconventional Reservoir Model Predictions Using Massively-Parallel GPU Flow-Simulation: Bakken/Three Forks Reservoir Development Cases and SRV Testing
M. Shahvali, J. R. Gilman, O. Angola, M. Uland, H. Meng, iReservoir.com Inc.; K. Esler, K. Mukundakrishnan, M. Ghasemi, V. Natoli, Stone Ridge Technology
This paper was prepared for presentation at the SPE Low Perm Symposium held in Denver, Colorado, USA, 5-6 May 2016.
SPE 178562
URTeC 2153938
Abstract
Unconventional Reservoir Model Predictions Using Massively-Parallel GPU Flow-Simulation: Part-1 Bakken Reservoir Characterization Choices and Parameter Testing
J. R. Gilman, M. Uland*, O. Angola, R. Michelena, H. Meng, iReservoir.com Inc.; K. Esler, K. Mukundakrishnan, V. Natoli, Stone Ridge Technology
This paper was prepared for presentation at the Unconventional Resources Technology Conference held in San Antonio, Texas, USA, 20-22 July 2015.
SPE 173246
Abstract
Accelerating Tight Reservoir Workflows With GPUs
Mukundakrishnan, K., Esler, K.., Dembeck, D., Natoli, V., Shumway, J. Zhang, Y., Stone Ridge Technology; Gilman, J., Meng, H., iReservoir.com Inc.
This paper was prepared for presentation at the SPE Reservoir Simulation Symposium held in Houston, Texas, USA, 32-25 February 2015.

SEG PDF

GSHJ PDF

AOGR PDF

Flow simulation models for unconventional reservoirs: the role of seismic data
Michelena, R. J., Meng, H. Z., Godbey, K. S., iReservoir.com: presented at the SEG 2014 Conference held in Denver, Colorado, U.S.A., 26-31 October 2014.

Michelena, R. J., Meng, H. Z., Godbey, K. S., Gilman, J.R., iReservoir.com: Also published in GSH Journal, 5, June 2015, 13-17.

Also published as Seismic Data Key For Flow Simulation, The American Oil & Gas Reporter, July 2015, 65-69.

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Published Books Available from the SPE
ISBN:978-1-61399-292-0
Description

Reservoir Simulation: History Matching and Forecasting
Gilman, J. R., iReservoir.com Inc.; Ozgen, C., Nitec LLC: 2013.

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Published Papers
ISBN:978-1-86239-372-1
Description

Pranter, M. J., A. C. Hewlett, R. D. Cole, H. Wang, and J. R. Gilman, “Fluvial architecture and connectivity of the Williams Fork Formation: use of outcrop analogues for stratigraphic characterization and reservoir modelling”, Geological Society, London, Special Publications Online First, July 29, 2013; doi 10.1144/SP387.1.
(also in Sediment-Body Geometry and Heterogeneity, edited by A. W. Martinius, J. A. Howell and T. R. Good, ISBN 978-1-86239-372-1, July 2014)

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Published Papers Available as PDF Downloads
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Infill well evaluations of Jonah Field tight gas: characterization and simulation of complex architectural elements
Michelena, R. J., Gilman, J. R., Angola, O. G., Uland, M. J., iReservoir.com, Pasternack, I., EnCana Oil & Gas (USA): first break vol. 27, April 2009, 73-81.

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Comparison of shear impedances inverted from stacked PS and SS data: Example from Rulison Field, Colorado
Guliyev, E., Michelena, R. J.: The Leading Edge, Nov. 2009, 1388-1393.

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Constraining 3D facies modeling by seismic-derived facies probabilities: Example from the tight-gas Jonah Field
Michelena, R. J., Godbey, K. S., Angola, O. G.: The Leading Edge, Dec. 2009, 1470-1477.

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Facies probabilities from multidimensional crossplots of seismic attributes
Michelena, R. J., Godbey, K. S., Rodrigues, P. E.: to be presented at the SEG 2010 Conference held in Denver, Colorado, U.S.A, 17-22 October 2010.

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Facies probabilities from multidimensional crossplots of seismic attributes: Application to tight gas Mamm Creek Field, Piceance Basin, Colorado
Michelena, R. J., Godbey, K. S., Rodrigues, P. E.: The Leading Edge, Jan. 2011, 62-69.

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Introduction to this special section: Practical applications of anisotropy
Lynn, H. B., Michelena, R. J.: The Leading Edge, July 2011, 726-730.

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Introduction to this special section: Seismic inversion for reservoir properties
Michelena, R. J., Goodway, W. N., Smith, T.M.: The Leading Edge, May 2012, 526-527.

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URTeC 1581308
Abstract

Estimation of dispersion in orientations of natural fractures from seismic data: Application to DFN modeling and flow simulation
Michelena, R. J., Zahm, C. K., Godbey, K. S., Wang, H., Gilman, J. R.: The Leading Edge, December 2013, 1502-1512.

SEG PDF

GSHJ PDF

AOGR PDF

Flow simulation models for unconventional reservoirs: the role of seismic data
Michelena, R. J., Meng, H. Z., Godbey, K. S., iReservoir.com: presented at the SEG 2014 Conference held in Denver, Colorado, U.S.A., 26-31 October 2014.

Michelena, R. J., Meng, H. Z., Godbey, K. S., Gilman, J.R., iReservoir.com: Also published in GSH Journal, 5, June 2015, 13-17.

Also published as Seismic Data Key For Flow Simulation, The American Oil & Gas Reporter, July 2015, 65-69.

PDF Download Facies Modeling in Unconventional Reservoirs Using Seismic-Derived Facies Probabilities
Reinaldo Michelena, Omar Angola, Kevin Godbey, iReservoir.com Inc.
This paper was prepared for presentation at the SEG 2016 Conference held in Dallas, Texas, USA, 16-21 Oct 2016.
Available for download from the SEG Library at http://library.seg.org/doi/10.1190/segam2016-13954311.1

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SPE Published Papers: (Available for download from the OnePetro Website: Search by Abstract Numbers listed below)
SPE 180204
Abstract
Unconventional Reservoir Model Predictions Using Massively-Parallel GPU Flow-Simulation: Bakken/Three Forks Reservoir Development Cases and SRV Testing
M. Shahvali, J. R. Gilman, O. Angola, M. Uland, H. Meng, iReservoir.com Inc.; K. Esler, K. Mukundakrishnan, M. Ghasemi, V. Natoli, Stone Ridge Technology
This paper was prepared for presentation at the SPE Low Perm Symposium held in Denver, Colorado, USA, 5-6 May 2016.
(Note: this is a pre-publication paper)
SPE 173246
Abstract
Accelerating Tight Reservoir Workflows With GPUs
Mukundakrishnan, K., Esler, K.., Dembeck, D., Natoli, V., Shumway, J. Zhang, Y., Stone Ridge Technology; Gilman, J., Meng, H., iReservoir.com Inc.;
This paper was prepared for presentation at the SPE Reservoir Simulation Symposium held in Houston, Texas, USA, 23-25 February 2015.
SPE 146580
Abstract
A New Classification Plot for Naturally Fractured Reservoirs
James R. Gilman, Huabing Wang, Sepehr Fadaei, Michael J. Uland, iReservoir.com, Inc.
This paper was prepared for presentation at the Canadian Unconventional Resources Conference held in Alberta, Canada, 15-17 November 2011.
SPE 146037
Abstract
Reservoir Simulation of Detailed Object-based Models of a Complex Fluvial System
James R. Gilman, Huabing Wang, iReservoir.com, Inc.
This paper was prepared for presentation at the SPE Annual Technical Conference and Exhibition held in Denver, Colorado, U.S.A., 30 October-2 November 2011.
SPE 91940
Abstract
Dynamic Behavior of Discrete Fracture Network (DFN) Models
Hugo Araujo, Pablo Lacentre, Tomás Zapata, Aldo Del Monte, and Francisco Dzelalija, Repsol-YPF, James Gilman and Hai-Zui Meng, iReservoir.com, Hossein Kazemi and Erdal Ozkan, Colorado School of Mines
This paper was prepared for presentation at the 2004 SPE International Petroleum Conference in Mexico held in Puebla, Mexico, 8-9 November 2004.
SPE 89880
Abstract
Streamline Simulation of Countercurrent Water-Oil and Gas-Oil Flow in Naturally Fractured Dual-Porosity Reservoirs
Jaime Moreno, Schlumberger, H. Kazemi, Colorado School of Mines, J. R. Gilman, iReservoir.com
This paper was prepared for presentation at the SPE Annual Technical Conference and Exhibition held in Houston, Texas, U.S.A., 26-29 September 2004.
SPE 84414
Abstract

Case Study: Merging Modern Reservoir Characterization with Traditional Reservoir Engineering
Rothkopf, B. W., Fredrickson, S. C., Hermann, J. B., SPE 84414 to be presented at the SPE Annual Technical Conference and Exhibition held in Denver, Colorado, U.S.A., 5 – 8 October 2003.

SPE 77673
Abstract
Integrated Reservoir Characterization and Simulation for Reservoir Management Using a Web-Based Collaborative Technical Workflow Manager
Meng, H-Z., Godbey, K. S., Gilman, J. R., and Uland, M. J.: SPE 77673 presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, TX (Sep. 29-Oct. 2, 2002). (Summarized in J. of Petroleum Technology “Reservoir Characterization Using a Web-Based Technical Workflow Manager”, Nov. 2002 p 61-62).
SPE 77671
Abstract
A Case Study: Using Modern Reservoir Characterization to Optimize Future Development of a Mature Asset
Campanella, J. D., Sonnenfeld, M.D., Zahm, L. C., Gilman, J. R., Conrad, L., Seimens, C. and Zaitlin, B. A.: SPE 77671 presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, TX (Sep. 29-Oct. 2, 2002).
SPE 77374
Abstract
Statistical Ranking of Stochastic Geomodels Using Streamline Simulation: A Field Application
Gilman, J. R., Meng, H-Z., Uland, M. J., Dzurman, P. J., and Cosic, S.: SPE 77374 presented at the 2002 SPE Annual Technical Conference and Exhibition, San Antonio, TX (Sep. 29-Oct. 2, 2002).
(Summarized in J. of Petroleum Technology “Statistical Ranking of Stochastic Geomodels Using Streamline Simulation”, Feb. 2003 p 62-63.)
SPE 37699
Abstract
3-D Reservoir Characterization for Improved Reservoir Management
M. J. Uland, SPE, Marathon Oil; S. W. Tinker, SPE, Marathon Oil; D. H. Caldwell, Marathon Oil: SPE 37699 was prepared for presentation at the 1997 SPE 10th Middle East Oil Show & Conference held in Manama Bahrain 15-18 March 1997.

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SPWLA Papers: (Available for download from the SPWLA Website: Search by Abstract Numbers listed below)
SPWLA F 2001 Abstract Condensate Liquid Yield Calculations by Combining Open Hole and Pulsed Neutron Logs
Richard H. Merkel, System Technology Associates; Michael J. Uland, iReservoir.com Inc.: Paper-F, presented at the SPWLA 42nd Annual Logging Symposium, June 17-20, 2001

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URTeC Published Papers: (Available for download from the OnePetro Website: Search by Abstract Numbers listed below)
SPE 178562
URTeC 2153938
Abstract
Unconventional Reservoir Model Predictions Using Massively-Parallel GPU Flow-Simulation: Part-1 Bakken Reservoir Characterization Choices and Parameter Testing
J. R. Gilman, M. Uland*, O. Angola, R. Michelena, H. Meng, iReservoir.com Inc.; K. Esler, K. Mukundakrishnan, V. Natoli, Stone Ridge Technology
This paper was prepared for presentation at the Unconventional Resources Technology Conference held in San Antonio, Texas, USA, 20-22 July 2015.
PDF Download
URTeC 1581308
Abstract

Estimation of dispersion in orientations of natural fractures from seismic data: Application to DFN modeling and flow simulation
Michelena, R. J., Zahm, C. K., Godbey, K. S., Wang, H., Gilman, J. R.: The Leading Edge, December 2013, 1502-1512.

URTeC 1577279
Abstract
Non-Linearity in Decline Behavior of Unconventional Wells
James R. Gilman and Sepehr Fadaei*, iReservoir.com, Inc.: RTeC 1577279 presented at the Unconventional Resources Technology Conference, Denver, Colorado, USA, 12-14 August 2013.

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