Quick View Links:

• Geomechanical Model
• Sand Production Prediction
• Pore Pressure Prediction
• Fractured Reservoirs

• Wellbore Stability
• Petrophysical Log Analysis
• Fault Seal Analysis

Geomechanical Model

• 2008 - Barton, C.A. and D. Moos, Geomechanical Wellbore Imaging: Key to Managing the Asset Life Cycle, in Dipmeter and Borehole Image Log Technology, AAPG Memoir, Kraaijveld, Pöppelreiter, Garcia-Carballido, Epping, Xu editors, in press.
• 2006 - Barton, C, Wellbore Imaging: A Key to Managing the Asset Life Cycle, Abstract # 919598, AAPG International Conference (Perth, Australia, 11/5-8/2006) Technical Program 2006
• 2006 Brehm, Andy and Chris Ward, Understanding Leads to Stability, Hart's E&P, November 2006, pg. 89.
• 2005 Brehm, Andy and Chris Ward, Pre-Drill Planning Saves Money, Hart's E&P , May 2005, page 81.
• 2003 - Seeber, L., T. Lupo, D. Goldberg, M. Caputi, C. Barton, Stress Regimes in The Newark Basin Rift: Evidence From Core and Downhole Data. Abstract # 910729, The Great Rift Valleys Of Pangea In Eastern North America: Tectonics, Structure, and Volcanism: Vol.1 PP.104-117; Columbia University Press, 2003
• 2003 - Zoback, M.D., Barton, C.A., Brudy, M.O., Castillo, D.A., Grollimund, B.R., Finkbeiner, T., Moos, D.B., Peska, P., Ward, C.D., and Wiprut, D.J., Determination of Stress Orientation and Magnitude in Deep Wells. Intl. J. Rock Mechs, 40, 1049-1076.
• 2002 - Barton, C. A., Discrimination of Natural Fractures from Drilling-Induced Wellbore Failures in Wellbore Image Data – Implications for Reservoir Permeability, 2000 SPE International Petroleum Conference & Exhibition, Villahermosa, February 2000.
• 2002 Castillo, D. A., P. Ryles, and K. John, The Legendre Field Development and Geomechanical Program: From Exploration to Drilling to Production, in proceedings IADC/SPE Asia Pacific Drilling Technology Conference, Sept. 9-11, 77255.
• 2002 - Barton, C. A., and M. D. Zoback, Discrimination of Natural Fractures from Drilling-Induced Wellbore Failures in Wellbore Image Data – Implications for Reservoir Permeability, SPE 78599, SPE Reservoir Evaluation and Engineering, June, pp 249-254.
• 2002 - Barton, C. A., and M. D. Zoback, Wellbore Imaging Technologies Applied to Reservoir Geomechanics and Environmental Engineering in Geological Applications of Well Logs, M. Lovell and N. Parkinson (eds.), AAPG Methods in Exploration, No. 13, 229-239.
• 2001 Raaen, A.M., and M. Brudy, Pump-in/Flowback Tests Reduce the Estimate of Horizontal In Situ Stress Significantly, SPE 71367.
• 2001 Brudy, M. and H. Kjørholt, Stress orientation on the Norwegian continental shelf derived from borehole failures observed in high-resolution borehole imaging logs, Tectonophysics, v.337, pp.65-84.
• 2001 Finkbeiner, T., M.D. Zoback, P. Flemings, and B. Stump, Stress, pore pressure and dynamically constrained hydrocarbon columns in the South Eugene Island 330 Field, northern Gulf of Mexico, AAPG Bulletin, v.85, no.6, pp. 1007-1031.
• 2001 Grollimund, B., M.D. Zoback, D. Wiprut, and L. Arnesen, Stress orientation, pore pressure, and least principal stress in the Norwegian sector of the North Sea, Petroleum Geoscience, v.7, pp.173-180.
• 2001 Zoback, M.D., and J. Zinke, Production-induced normal faulting in the Valhall and Ekofisk oil fields, Pure and Applied Geophysics, in press.
• 2000 - Barton C.A. and D. Ritter. Software to Teamware: Leveraging Knowledge in Real Time Through the Internet. JPT Emerging Technology, April 2000.
• 2000 Wolhart, S.L., S. Berumen, C.L. Cipolla, C.A. Barton, and P.T. Branagan, Use of Hydraulic Fracture Diagnostics to Optimize Fracturing Jobs in the Arcabuz-Culebra Field, 2000 SPE Rocky Mountain Regional/Low Permeability Reservoirs Symposium, Denver, CO, March.
• 2000 Castillo, D.A., and D. Moos, Reservoir Geomechanics Applied to Drilling and Completion Programs in Challenging Formations: Northwest Shelf, Timor Sea, North Sea and Colombia, APPEA Journal, February 16, pp. 509-521.
• 2000 Townend, J., and M.D. Zoback, How faulting keeps the crust strong, Geology, v.28, no.5, pp. 399-402.
• 2000 Wolhart, S.L., S. Berumen, C.L. Cipolla, C.A. Barton, and P.T. Branagan, Use of Hydraulic Fracture Diagnostics to Optimize Fracturing Jobs in the Arcabuz-Culebra Field, 2000 SPE Rocky Mountain Regional/Low Permeability Reservoirs Symposium, Denver, CO, March.
• Barton, C.A., D. A. Castillo, d. Moos, P. Peska, M.D. Zoback. Characterizing the full stress tensor based on observations of drilling-induced wellbore failures in vertical and inclined boreholes leading to improved wellbore stability and permeability prediction, APPEA Journal 1998, 29-53.
• 1998 - Barton, C. A., and M. D. Zoback. Earth stress, rock fracture and wellbore failure—Wellbore imaging technologies applied to reservoir geomechanics and environmental engineering, 4th SEGJ International Symposium, Tokyo, Japan, December 1998, pp. 49–56.
• 1998 Finkbeiner, T. and M.D. Zoback, In-situ stress and pore pressure in the South Eugene Island field, Gulf of Mexico, SPE/ISRM Eurock '98, Trondheim, Norway, July 8-10.
• 1997 - Barton, C.A. , D. Moos, P. Peska, M.D. Zoback. Utilizing wellbore image data to determine the compete stess tensor: Application to permeability anisotropy and wellbore stability. The Log Analyst, November-December 1997, 21-33.
• 1997 Brudy, M., M. D. Zoback, K. Fuchs, F. Rummel, and J. Baumgärtner, Estimation of the complete stress tensor to 8 km depth in the KTB scientific drill holes: implications for crustal strength, J. Geophys. Res., v.102, no.8, pp.18,453-18,475.
• 1994 - Barton, C. A., and M. D. Zoback. Stress perturbations associated with active faults penetrated by boreholes: Possible evidence for near-complete stress drop and a new technique for stress magnitude measurement, J. Geophys. Res., 99(B5), pp. 9373–9390.
• 1990 Moos, D. and M.D. Zoback, Utilization of observations of well bore failure to constrain the orientation and magnitude of crustal stresses: Application to continental, Deep Sea Drilling Project and ocean drilling program boreholes, J. Geophys. Res., v.95, pp. 9305-9325.

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Sand Production Prediction

• 2004 Martin Brudy, Wouter van der Zee and Christian Buckner , Prediction of Optimal Perforation Orientation and Maximum Sand-Free Drawdown using a Finite Element Approach.
• 2000 Wiprut, D., and M.D. Zoback, Constraining the full stress tensor in the Visund field, Norwegian North Sea: Application to wellbore stability and sand production, Intl. J. Rock Mech. & Min. Sci., v.37, pp. 317-336.

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Pore Pressure Prediction

• 2000 Grollimund, B., and M.D. Zoback, Post Glacial Lithospheric Flexure and Induced Stresses and Pore Pressure Changes in the Northern North Sea, Tectonophysics, v.327, no.1-2, pp. 61-81.
• 2000 Ward, C.D., and M. Beique, Pore and Fracture Pressure Information from PWD data, AADE Drilling Technology Forum, Best Available Practical Drilling Technology-The Search Continues, Houston, TX, February.
• 1998 Ward, C.D., and Clark, R., Anatomy of a Ballooning Borehole using PWD tool, presented at the Workshop on Overpressure, Pao, France, April.
• 1997 Mazzoni, T., T. Wahdan, A. Bassem, and C.D. Ward, Real-time pore and fracture pressure prediction with FEWD in the Nile Delta, presented at the SPE/IADC Conference, SPE 37669, Amsterdam, March.
• 1997 Ward, C.D., and Andreassen, E., Pressure while drilling data improve reservoir drilling performance, presented at the SPE/IADC Drilling Conference, SPE 37588, Amsterdam, March.
• 1997 Ward, C.D., and E. Andreassen, Pressure-While-Drilling Data Improve Drilling Performance, Journal of Petroleum Technology, February, pp. 158-159.
• 1996 Ward, C. D., Pressure while drilling, The Pulser (International MWD Society) Magazine, pp. 1-3.
• 1995 Ward, C.D., Evidence for sediment unloading caused by fluid expansion over pressure generating mechanisms, presented at the Workshop on Stess in the North Sea, Norwegian Technical Institute, Tronheim, Norway.
• 1995 Ward, C.D., K. Coghill, M.D. Broussard, Pore- and Fracture-Pressure Determinations: Effective-Stress Approach, Journal of Petroleum Technology, pp. 1123-1124, September.
• 1994 Ward, C.D., K. Coghill, M,D. Broussard, The application of petrophysical data to improve pore and fracture pressure determination in North Sea Central Graben HPHT wells, presented at the 69th SPE Annual Technical Conference and Exhibition, SPE 28297, New Orleans, LA, September.

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Fractured Reservoirs

• 2008 - Moos, D. and C.A. Barton, Modelling uncertainty in the permeability of stress-sensitive fractures, ARMA 2008, San Francisco, CA, July 1-3, 2008.
• 2007, Dwi Hudya F., Sandra Natalia, and David Castillo, The Effect of Pressure Depletion on Geomechanical Stress and Fracture Behavior in Gunung Kembang Field, in proceedings of Indonesian Petroleum Association, Thirty-first Annual Convention and Exhibition, May 2007.
• 2002 - Tezuka, K. T. Namikawa, T. Tamagawa, A. Day-Lewis, C. Barton, GMI Inc. Roles of the Fracture System and State of Stress for Gas Production from the Basement Reservoir in Hokkaido, Japan, SPE No. 75704, SPE Gas Technology Symposium, 30 April-2 May 2002, Calgary, Alberta, Canada, pp 1-11.
• 2002 Barton, C. A., and M. D. Zoback: Discrimination of Natural Fractures From Drilling-Induced Wellbore Failures in Wellbore Image Data--Implications for Reservoir Permeability" SPE 78599, in "SPE Reservoir Evaluation and Engineering", June. (in press).
• 2000 - Hickman, S.H., M.D. Zoback, C.A. Barton, R. Benoit, J. Svitek, and R. Summers, Stress and permeability heterogeneity within the Dixie Valley geothermal reservoir: recent results from well 82-5, in Proceedings, Twenty-fifth workshop on Geothermal Reservoir Engineering, Stanford University, Jan. 24–26, SGP-TR-165.
• 1998 - Barton, C. A., S. Hickman, R. Morin, M. D. Zoback, and D. Benoit. Reservoir-scale fracture permeability in the Dixie Valley, Nevada, Geothermal Field, In: Proceedings, SPE/ISRM 47371, Eurock 98’, Trondheim, Norway, July 8-10.
• 1997 - Barton, C. A., D. Moos, and M. D. Zoback. In situ stress measurements can help define local variations in fracture hydraulic conductivity at shallow depth, The Leading Edge, November 1997, pp. 1653–1656.
• 1997 - Barton, C. A., S. Hickman, R. Morin, M. D. Zoback, T. Finkbeiner, J. Sass, and D. Benoit. In-situ stress and fracture permeability along the Stillwater Fault Zone, Dixie Valley, Nevada, In: Proceedings, Twenty-Second Workshop on Geothermal Reservoir Engineering, SGP-TR-156, Stanford University, Stanford, CA, January 27–29, 1997, pp. 147–152.
• 1997 - Hickman, S., C. A. Barton, R. Morin, M. D. Zoback, T. Finkbeiner, J. Sass, and D. Benoit. Fracture permeability and its relationship to in-situ stress in the Dixie Valley, Nevada, Geothermal Reservoir, Int’l. J. Rock Mech. & Min. Sci. 34:3-4, Paper no.126.
• 1997 Finkbeiner, T., C.A. Barton, and M.D. Zoback, Relationships among in-situ stress, fractures and faults, and fluid flow: Monterey Formation, Santa Maria Basin, California, AAPG Bulletin, v.81, no.12, pp. 1975-1999.
• 1996 - Barton, C. A., S. Hickman, M. D. Zoback, R. Morin, T. Finkbeiner, J. Sass, and D. Benoit. Fracture permeability and in-situ stress in the Dixie Valley, Nevada, Geothermal Reservoir, In: Proceedings of the 8th International Symposium on the Continental Crust through Drilling, Tsukuba, Japan, February 1996, pp. 210–215.
• 1996 - Barton, C. A., and K. Nasser. Fractures, fluid flow and in-situ stress in shallow sedimentary rocks at a proposed low level nuclear waste disposal site, North Carolina, In: Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems, April 28–May 2, 1996, Keystone, Colorado, pp. 419–428.
• 1995 Barton, C.A., M.D. Zoback and D. Moos, Fluid flow along potentially active faults in crystalline rock, Geology, v.23, no.8, pp. 683-686.
• 1995 Barton, C.A., M.D. Zoback and D. Moos, Fluid flow along potentially active faults in crystalline rock, Geology, v.23, In-situ stress and fracture permeability in the Long Valley Calderano.8, pp. 683-686.
• 1995 - Barton, C. A., M. D. Zoback, D. Moos, and J. Sass. In-situ stress and fracture permeability in the Long Valley Caldera, in Proceedings of the 35th Symposium on Rock Mechanics, Daemen, J. K., and Schultz, R. A. (eds), Reno, Nevada, A. A. Balkema, Rotterdam, pp. 225–230.
• 1995 - Barton, C. A., M. D. Zoback, and D. Moos. In-situ stress and permeability in fractured and faulted crystalline rock, in Proceedings of the Second International Conference on the Mechanics of Jointed and Faulted Rock, H. P. Rossmanith (ed), Vienna, Austria, A. A. Balkema, Rotterdam, pp. 381–386.
• 1993 - Barton, C. A., M. D. Zoback, and D. Moos. Identification of hydraulically conductive fractures from the analysis of localized stress perturbations and thermal anomalies, EOS Trans., 74, 43, p. 568.
• 1992 - Barton, C. A., and M. D. Zoback. Self-similar distribution and properties of macroscopic fractures at depth in crystalline rock in the Cajon Pass scientific drillhole, J. Geophys. Res., 97(B4), pp. 5181–5200.
• 1990 - Barton, M.D. Zoback. Self-similar distribution of macroscopic fractures at depth in crystalline rock in the Cajon Pass scientific drillhole. In: Rock Joints, Barton & Stephansson, eds. 1990 Balkema, Rotterdam ISBN 90 6191 109 5, 163-170.
• 1988 - Barton, C.A. and D. Moos. Analysis of macroscopic fractures in the Cajon Pass scientific drillhole over the interval 1829 - 2115 meters. Geophysical Research Letters, Vol. 15, No. 9, 1013-1016

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Wellbore Stability

• 2002 Chang, C., and M.D. Zoback, Viscous Creep in Dry Unconsolidated Gulf of Mexico Shale, EOS Trans., AGU, Fall.
• 2002 Grollimund, B., C. Ward, A. Medina, and C. Cobos, Application of Geomechanics in Well Design in the Plataforma Deltana Area Offshore Venezuela, in Proceedings of the XI Congresso Venezelano de Geoffsica, November.
• 2002 Moos, D., P. Peska, T. Finkbeiner, and M.D. Zoback, Comprehensive Wellbore Stability Analysis Utilizing Quantitative Risk Assessment, in Journal of Petroleum Science and Engineering, Special issue on Wellbore Stability, in press.
• 2002 Ritter, D.G., B. Grollimund, and S. L. Zoller, Wellbore Stability in the Deepwater Bijupira-Salema Fields, Offshore Brazil - A Probabilistic Approach. SPE/ISRM #78217, Irving, Texas, Oct. 20-23.
• 2002 Salamy, Salam P., and Thomas Finkbeiner, A poroelastic analysis to address the impact of depletion rate on wellbore stability in openhole horizontal completions, in Proceedings of the 10th Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, United Arab Emirates, October 13-16, pp. 1-11.
• 2001 Moos, D., Wellbore stability in deep water - Handling geomechanical uncertainty, AADE#01-NC-HO-43, AADE 2001 National Drilling Conference, "Drilling Technology-The Next 100 Years", Houston, TX.
• 2001 Zoback, M. D., and J. C. Zinke, Production-induced normal faulting in the Valhall and Ekofisk oil fields, Pure and Applied Geophysics, 159, pp. 403-420.
• 2000 Wiprut, D., and M.D. Zoback, Constraining the full stress tensor in the Visund field, Norwegian North Sea: Application to wellbore stability and sand production, Intl. J. Rock Mech. & Min. Sci., v.37, pp. 317-336.
• 1998 Barton, C.A., D.A. Castillo, D. Moos, P. Peska, and M.D. Zoback, Characterising the Full Stress Tensor Based on Observations of Drilling-Induced Wellbore Failures in Vertical and Inclined Boreholes Leading to Improved Wellbore Stability and Permeability Prediction, APPEA Journal, pp. 466-488.
• 1998 Ward, C. D., The race to the reservoir: Maximizing penetration rates, presented at the SPE Asia Pacific Drilling Forum, Bali, Indonesia, October.
• 1997 Barton, C.A., D. Moos, P. Peska, and M.D. Zoback, Utilizing wellbore image data to determine the complete stress tensor: Application to permeability anisotropy and wellbore stability, The Log Analyst, pp. 21-33.

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Petrophysical Log Analysis

• 2001 Qobi, Latifa, X.M. Tang, Andre De Kuijper, and Jonathan Strauss, Permeability determination from Stoneley waves in the Ara Group, Oman, GeoArabia Journal, v.6, n.4.
• 2000 Khaksar, A., et al., calibrating Core, log & seismic data to assess effective stress & hydrobarbon saturation, Cooper basin, South Australia, presented at APPEA 2000.
• 1999 Khaksar, A. and C.M. Griffiths, Influence of effective stress on the acoustic velocity and log derived porosity, SPE Reservoir Evaluation & Engineering, 2(1), 69-72.
• 1991 - Barton, C. A., L. G. Tesler, and M. D. Zoback. Interactive image analysis of borehole televiewer data, in Automated Pattern Recognition in Exploration Geophysics, I. Palaz and S. K. Sengupta (eds.), Springer-Verlag, New York, Chapter 12, pp. 223–248.
• 1990 - Barton, C. A., and L. G. Tesler. BHTV image software package for analysis of wellbore image data. Stanford Rock Physics and Borehole Geophysics Project
• 1990 - Borehole Imaging, F. Paillet, C. A. Barton, S. Luthi, F. Rambo, and J. Zemanek (eds). S.P.W.L.A. Reprint Series, SPWLA, Houston.
• 1989 - Barton, C.A., D. Moos, J.P. Blangy, Analysis of full waveform acoustic loggng data at ODP site 642 - Outer Voring plateau, in Eldholm, O., Thiewe, J., Taylor, et. Al., Proceedings of the Ocean Drilling Program, Scientific Results, Vol. 104, 953-964.
• 1988 - Barton, C.A. and M.D. Zoback. Determination of in situ stress orientation from borehole guided waves. Journal of Geophysical Research, Vol. 93, No. B7, 7834-7844.

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Fault Seal Analysis

• 2003 - Chanchani, S.K., M.D. Zoback and C. Barton, A case study of hydrocarbon transport along active faults and production-related stress changes in the Monterey formation, California, in Fracture and In-situ stress characterization of hydrocarbon reservoirs, Spec. Pub. Geol. Soc. London, ed. M. Ameen, 209, 17-26.
• 2003 Grollimund, B. et al., Impact of glacially induced stress changes on fault-seal integrity offshore Norway, AAPG Bulletin.
• 2002 Wiprut, D., and M. D. Zoback, Fault reactivation, leakage potential, and hydrocarbon column heights in the northern North Sea, Hydrocarbon Seal Quantification (NPF Special Publication), v. 11, pp. 203-219.
• 2000 Wiprut, D., and M.D. Zoback, Fault reactivation and fluid flow along a previously dormant normal fault in the northern North Sea, Geology, v.28, no.7, pp. 595-598.