Alfred Roy Jennings, Jr., P.E.

Enhanced Well Stimulation, Inc.

P.O. Box 1407 • Whitehouse, TX 75791

(903) 871-9853 (Office) • (903) 477-7770 (Cell) •

Professional Summary

An accomplished and recognized world-class expert in well stimulation – Experience involves all aspects of well stimulation applications:

Stays current in technology through active participation in technical meetings, seminars, and forums and through frequent communications with service company research and operating company well stimulation experts.

Areas of Strength

Professional Work Experience

Enhanced Well Stimulation, Inc. – Athens, Texas (Sept. 1995–Present)

Well Stimulation Consultant / President

Mobil E&P Technical Center (MEPTEC) – Dallas, Texas (1992–1995)

Associate Engineering Advisor

Mobil E&P Services, Inc. (MEPSI) – Dallas, Texas (1987–1992)

Associate Operations Engineering Advisor

Mobil R&P Corp., Dallas Research Lab – Dallas, Texas (1982–1987)

Research Associate

Halliburton Services Research Center – Duncan, Oklahoma

Fracturing Section Supervisor (1979–1982)

Field Services Group Leader (1977–1979)

Development Engineer / Sr. Chemist, Field Services Group (1967–1977)

Professional Affiliations

Society of Petroleum Engineers of AIME

Completions Engineering Association (1988–Present)

Gas Research Institute, Nat. Gas Supply Project Advisory Group (1992–1995)


Registered Professional Engineer, State of Texas, No. 64684


B.S. in Chemistry, 1967, University of Oklahoma

M.S. in Petroleum Engineering, 1972, University of Oklahoma


Author and co-author of 90 U.S. Patents and over 40 International Patents. (List of Titles and Patent Numbers can be provided upon request). The patents, assigned to Mobil Corporation, deal with various aspects of well stimulation and well completion techniques and procedures for both vertical and horizontal wells.

Selected Publications

  1. Jennings, A.R. Jr.: The Effects of Surfactant-Bearing Fluids on Permeability Behavior in Oil Producing Formations, SPE 5635, presented at the 50th Annual Fall Meeting of the SPE, Dallas, TX, Sept. 28–Oct. 5, 1975.
  2. Jennings, A.R. Jr.: Fracture Flow Capacity – A Key to Sustained Production After Hydraulic Fracturing, SPE 6127, presented at the 51st Annual Fall Meeting of the SPE, New Orleans, LA, Oct. 3–6, 1976.
  3. Jennings, A.R. Jr., and Sprawls, B.T.: Successful Stimulation in the Cotton Valley Sandstone – A Low Permeability Reservoir, JPT (October, 1977), 1267–1276.
  4. Jennings, A.R. Jr., Darden, W.G., Wenzel, R.W., Shrut, R.S., and Foster, J.: Massive Hydraulic Fracturing in the Eastern United States, SPE 6866, presented at the 52nd Annual Fall Meeting of the SPE, Denver, CO, Oct. 9–12, 1977.
  5. Crowell, R.F., and Jennings, A.R. Jr.: A Diagnostic Technique for Re-Stimulation Candidate Selection, SPE 7556, presented at the 53rd Annual Fall Meeting of the SPE, Houston, TX, Oct. 1–3, 1978.
  6. Jennings, A.R. Jr., and Darden, W.G.: Gas Well Stimulation in the Eastern United States, SPE 7914, presented at the 1979 SPE Symposium on Low Permeability Gas Reservoirs, Denver, CO, May 20–22, 1979.
  7. Jennings, A.R. Jr.: Use of Field Data in the Analysis of the Influence of Proppants on Apparent Fracturing Fluid Viscosity, SPE 20641, presented at the 65th Annual Fall Meeting of the SPE, New Orleans, LA, Sept. 23–26, 1990.
  8. Jennings, A.R. Jr.: Good Wells Make the Best Candidates for Well Stimulation, SPE Prod. Eng. (November, 1991), 371–376.
  9. Cannan, W.L., Jennings, A.R. Jr., Huseini, S., Bordelon, T.P., and Sardjono, S.: Increasing Arun Deliverability Through Effective Acid Fracturing, SPE 22397, presented at the SPE International Meeting on Petroleum Engineering, Bejing, China, Mar. 24–27, 1992.
  10. Van Domelen, M.S., and Jennings, A.R. Jr.: Alternate Acid Blends for HPHT Applications, SPE 30419, presented at the Offshore Europe Conference, Aberdeen, Scotland, Sept. 5–8, 1995.
  11. Jennings, A.R. Jr.: Hydraulic Fracturing Fluids – Then and Now, Technology Today Series Article, JPT (July, 1996), 604–609.
  12. Coulter, G.R., and Jennings, A.R. Jr.: A Contemporary Approach to Matrix Acidizing, SPE 38594, presented at the SPE ATCE, San Antonio, Oct. 5–7, 1997.
  13. Jennings, A.R. Jr.: Laboratory Studies of Fines Movement in Gravel Packs, SPE Drilling and Completions (December, 1997), 275–280.
  14. Mauth, K.D., Ginest, N.H., and Jennings, A.R. Jr.: Analysis of Extreme Fracture Pressure Gradients in a Deep Gas Reservoir, SPE presentation at the 1998 SPE Technical Symposium, Dhahran, Saudi Arabia, Oct. 25–27, 1998.
  15. Jennings, A.R. Jr.: Strategic Well Stimulation: A Key to Reservoir Management, E&P Technology Exchange Article, JPT (March, 2000), p. 62.
  16. Jennings, A.R. Jr.: When Fracturing Doesn’t Work, SPE 71657 presented at the ATCE Meeting in New Orleans, Sept. 30–Oct. 3, 2001.
  17. Jennings, A.R. Jr.; Westerman, C.A.; Tadlock, D.W.; Westerman, R.; and Anderson, M.: A Systematic Approach to Improved Success With Hydraulic Fracturing Applications, SPE 101837 presented at the ATCE Meeting in San Antonio, Sept. 24–27, 2006.