The following are some of the publications authored or co-authored by Digital Formation. An up-to-date list of publications available for download is also available on our web site.

• Mixed Reservoir Wetting in Unconventional Reservoirs and Interpretation Of Porosity/Resistivity Cross Plots, Derived From Triple-Combo Log Data, Holmes, M., Holmes, A., and Holmes, D., URTeC, July 2017

• A Petrophysical Model to Distinguish Water-Wet and Oil-Wet Fractions of Unconventional Reservoir Systems Using Triple-Combo Log Suites, Holmes, M., Holmes, A., and Holmes, D., AAPG Pacific and Rocky Mountain Joint Symposium, October 2016
• Fracture Analysis from Standard Triple-Combo Log Suites, Holmes, M., Holmes, A., and Holmes, D., AAPG Annual Convention and Exhibition, June 2015
• Review of Existing Shaly-Sand Models and Introduction of a New Method Based on Dry-Clay Parameters, Peeters, M. and Holmes, A., Petrophysics Magazine, December 2014
• A New Petrophysical Model to Define Porosity Components of Unconventional Reservoirs, Using Standard Open-hole Triple Combo Logs, Holmes, M., Holmes, D., and Holmes, A., SPE Western North American and Rocky Mountain Joint Regional Meeting, April 2014
• Examples To Show The Importance of Using Upscaled Core Data When Comparing With Petrophysical Data, Holmes, M., Holmes, A., and Holmes, D., SPWLA Annual Symposium, June 2013
• A Petrophysical Model to Quantify Pyrite Volumes and to Adjust Resistivity Response to Account for Pyrite Conductivity, Holmes, M., Holmes, A., and Holmes, D., AAPG Annual Convention and Exhibition, May 2013
• A Petrophysical Model To Estimate Relative and Effective Permeabilities in Hydrocarbon Systems and To Predict Ratios of Water to Hydrocarbon Productivity, Holmes, M., Holmes, A., and Holmes, D., SPE Annual Technical Conference and Exhibition, October 2012
• A Petrophysical Model To Estimate Free Gas in Organic Shales, Holmes, M., Holmes, D., and Holmes, A., AAPG Annual Convention and Exhibition, April 2011
• Generating Continuous Logs of Matrix and Shale Acoustic Properties for Improved Formation Evaluation, Holmes, M., and Holmes, A., SEG Annual Meeting, October 2010
• A Petrophysical Method to Evaluate Irregularly Gas Saturated Tight Sands Which Have Variable Matrix Properties and Uncertain Water Salinities, Holmes, M., Holmes, A., and Holmes, D., AAPG International Convention and Exhibition, September 2010
• Integration of Core Capillary Pressure Measurements with Petrophysics to Define Saturation/Height Relations and Reservoir Quality Variations, Holmes, M., Holmes, A., and Holmes, Denver Well Logging Society, October 2009
• Relationship Between Porosity and Water Saturation: Methodology to Distinguish Mobile from Capillary Bound Water, Holmes, M., Holmes, A., and Holmes, D., AAPG Annual Convention and Exhibition, June 2009
• A Method to Quantify Gas Saturation in Gas/Water Systems, Using Density and Neutron Logs - Interpretation of Reservoir Properties When Compared With Gas Saturations From Resistivity Analysis, Holmes, M., Holmes, A., and Holmes, D., AAPG-RMS, October 2007
• Pressure Effects on Porosity-Log Responses Using Rock Physics Modeling: Implications on Geophysical and Engineering Models as Reservoir Pressure Decreases, Holmes, M., Holmes, A., and Holmes, D., SPE 96112, SPE Annual Technical Conference and Exhibition, October 2005
• Petrophysical Rock Physics Modeling: A Comparison of the Krief and Gassmann Equations, and Applications to Verifying and Estimating Compressional and Shear Velocities, Holmes, M., and Holmes, A., SPWLA Annual Symposium, June 2005
• Petrophysical Analysis of Piceance Basin Tight Gas Sandstones, NW Colorado, to Distinguish Wet Sands from Gas-Bearing Sands, and to Categorize Rock Quality Variation by Incorporating Capillary Pressure Interpretations, Holmes, M., Holmes, A., and Holmes, D., RMAG Guidebook, 2005
• Permeability Modeling from Petrophysical Measurements in Tight Gas Sands: Empirical Relations Including Analyses of Saturation Profiles From Individual Porosity Log Responses, Holmes, M., Holmes, A., and Holmes, D., Hedberg Conference, 2005
• Reservoir Categorization of Tight Gas Sandstones by Correlating Petrophysics with Core-Measured Capillary Pressure, Holmes, M., Holmes, A., and Holmes, D., AAPG-RMS, August 2004
• Modification of the Wyllie Time Series Acoustic Equation, to Give a Rigorous Solution in the Presence of Gas, Holmes, M., Holmes, A., and Holmes, D., SPWLA Annual Symposium, June 2004
• Application of Neural Networks To Correlate Core Descriptions of Depositional Environments with Log Responses, and To Extrapolate Over Intervals and Wells Where Cores Do Not Exist, Holmes, M., Holmes, D., and Holmes, A., AAPG Annual Convention and Exhibition, June 2001
• Oil, Gas and Water Saturations Calculated as Separate Entities from Density, Neutron and Resistivity Logs, Holmes, M. and Holloway, J.W. (ResTech Houston, Inc.), SPWLA Annual Symposium, June 1990

See Also