PUBLICATIONS:

Schubarth, Stephen and Milton-Tayler, David: "Investigating How Proppant Packs Change Under Stress," paper SPE 90562 presented at the SPE Annual Technical Conference and Exhibition, Houston, Texas, September 27 - 29, 2004

Lolon, E.P., McVay, D.A. and Schubarth, S.K.: "Effect of Fracture Conductivity on Effective Fracture Half Length," paper SPE 84311 presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, U.S.A., 5 ­ 8 October 2003.

Schubarth, S.K., Byrd, A.C. and Wickham, J.F.: "U.S. Natural Gas Market: Recent Dynamics and Future Concerns," paper SPE 80949 presented at the 2003 SPE Production and Operations Symposium, Oklahoma City, Oklahoma, March 23 ­ 25, 2003.

Schubarth, S.K., Bazan, L.W., Becnel, J.L., Wagner, A.L. and Manrique, J.E.: "Increasing Well Productivity in the Wilcox Lobo Trend," paper SPE 75677 presented at the 2002 SPE Gas Technology Symposium, Calgary, Alberta Canada, April 30 ­ May 2, 2002.

Barden, Dick, Smith, Chuck and Schubarth, Stephen: "Coupling Reservoir Simulation Technology with the Internet to Provide Realtime Reservoir Management," paper SPE 66392 presented at 2001 SPE Reservoir Simulation Symposium, Houston, Texas, February 11 ­ 14, 2001.

Schubarth, Stephen and O'Shea, Peter: "NMR-derived permeability aids frac design," Oil & Gas Journal, February 1, 1999, pp. 52-53

Schubarth, S.: "Increasing Marginal Play Profitability," Hart's Oil & Gas World, August 1998, pp. 29-31

Schubarth, S., Mullen, M. and Kessler, C.: "Successful Prediction of Well Productivity from Openhole Logs Improves Profitability in Several Rocky Mountain Formations: Case Histories," paper 1998AA presented at the SPWLA Annual meeting, Keystone, CO, May 22-25, 1998

Schubarth, S.K., Mullen, M.J., Seal, C.A., Woodall, S.: "Reservoir Description Techniques Improves Completion Economics in Piceance Basin Mesa Verde Project," paper SPE 39918 presented at 1998 Rocky Mountain Regional Meeting/Low-Permeability Symposium, Denver, CO, April 5-8, 1998

Schubarth, S.K., Yeager, R.E., Murphy, D.W.: "Advanced Fracturing and Reservoir Description Techniques Improves Economics in Utah, Green River Formation Oil Project," paper SPE 39777 presented at 1998 Permian Basin Oil and Gas Recovery Conference, Midland, TX, March 25-27, 1998

Schubarth, S.K., Chabaud, R.E.: "Reservoir Description Techniques Improves Completion Economics in Moxa Arch Frontier Development Project," paper SPE 40037 presented at 1998 SPE Gas Technology Symposium, Calgary, CN, March 15-18, 1998

Schubarth, S.K., Cobb, S.L. and Jeffery, R.B.: "Understanding Proppant Closure Stress," paper SPE 37489 presented at 1997 Production/Operations Symposium, Oklahoma City, Oklahoma, March 9-12, 1997

Dusterhoft, R., Parker, M., McCabe, M., Schubarth, S.: "Controlled Viscosity Reduction and Increased Fracture Conductivity Using a High-Temperature Breaker System," paper SPE 39896 presented at 1998 International Petroleum Conference and Exhibition of Mexico, Mexico City, Mexico, March 3-5, 1998

Hopkins, C.W., Voneiff, G.W., Schubarth, S.K. and Chabaud, R.E.: "Advanced Stimulation Technology Deployment Program, Bannon Energy, Inc., Frontier Sand, Moxa Arch Area, Western Wyoming," Gas Research Institute Topical Report GRI-96/0112 published January 1996

Schubarth, S.K., Chabaud, R.E. and Penny, G.S.: "Moxa Arch Frontier Formation Development Success Through Increased Fracture Conductivity - Part 2," paper SPE 30717 presented at 1995 SPE Annual Meeting, Dallas, Texas, October 23-25, 1995

Schubarth, S.K., Chabaud, R.E. and Einhorn, R.B.: "Moxa Arch Frontier Formation Development Success Through Increased Fracture Conductivity," paper SPE 28610 presented at 1994 SPE Annual Meeting, New Orleans, Louisiana, September 26-28, 1994

Ely, J.W., Schubarth, S.K., Wolters, B.C. and Kromer, J.C.: "New Tools Attack Permian Basin Stimulation Problems," Oil & Gas Journal, June 8, 1992, pp. 66-70

Ely, J.W., Wolters, B.C., Schubarth, S.K. and Bethard, D.R.: "New Fracture Design Effectively Place Proppant in Many Permian Basin Formations," paper presented at the 1992 Permian Basin Oil & Gas Conference, Midland, TX March 18-20, 1992

Ely, J.W., Wolters, B.C., Schubarth, S.K., Sommers, G.E., and Jacoby, M.A.: "High Proppant Concentration/Low Volume Fracture Treatment Combined with Forced Closure Yields Success in the Clearfork Formation," paper presented at the 1991 Southwest Petroleum Short Course, Lubbock, Texas.