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Gas Well Stimulation Studies

  • William L. Fourney
Part of the International Centre for Mechanical Sciences book series (CISM, volume 275)

Abstract

The research described here is part of a program funded by Morgantown Energy Technology Center under the Eastern Gas Shale Program to determine if tailored pulse loading (TPL) offers a viable means for stimulating Devonian Shale Wells. This technique (TPL) relies on the detonation so deflagration of a chemical substance to create borehole pressures which are low in magnitude, have a relatively slow rise time, and last for an extended period of time so as to pressurize the created fractures. The pressure loading of the cracks is thought to result in fractures that are driven much farther from the borehole wall than cracks which result from detonation of an ordinary high explosive in the wellbore. Schmidt et al., [1] report that too fast a rise time in the pressure loading results in a plastic deformation in the vicinity of the charge and an ultimate residual compressive stress surrounding that borehole. This compressive stress shuts down not only gas flow into the propagating cracks but gas flow from the shale back into the wellbore.

Keywords

Shock Front Crack Opening Explosive Charge Borehole Wall Stimulation Study 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    Schmidt, R.A., Boade, R.R., and Bass, R.C., “A New Perspective on Well Shooting—The Behavior of Contained Explosions and Deflag-rations”, 54th Annual Conference SPE of AIME, September 1979, Las Vegas, Nevada.Google Scholar
  2. [2]
    Warpinski, N.R., Schmidt, R.A., Cooper, P.W., Walling, H.C., and Northrop, D.A., “High Energy Gas Frac: Multiple Fracturing in a Wellbore”, 20th U.S. Symposium on Rock Mechanics, June 1979, Austin, Texas.Google Scholar
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    Stecher, F.P., “A Numerical Method for Simulating Controlled Blasting Techniques”, Ph.D. Thesis, University of Maryland, December 1978.Google Scholar
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    Gupta, In.N. and Kisslinger, C., “Model Study of Explosion Generated Rayleigh Waves in a Half Space”, Bulletin of the Seismological Society of America, Vol. 54, No. 2, pp. 475–484, 1964Google Scholar
  5. [5]
    Johannson, C.H. and Persson, P.A., Detonics of High Explosives, Academic Press, New York (1970).Google Scholar

Copyright information

© Springer-Verlag Wien 1983

Authors and Affiliations

  • William L. Fourney
    • 1
  1. 1.Mechanical Engineering College of EngineeringUniversity of MarylandCollege ParkUSA

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