Page 173 - Air and gas Drilling Field Guide 3rd Edition

164 CHAPTER 6 Direct Circulation Models

Equations (6-70), (6-71), (6-75), and (6-76) can be used in sequential calculation
steps starting at the bottom of the inside of the drill string and continuing for
each subsequent change in the cross-sectional area in the drill string until the sur-
face injection pressure is determined.

REFERENCES
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2. Brown, K. E., and Beggs, H. D., The Technology of Artificial Lift Methods, Vol. 1, PennWell
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3. Brown, K. E., et al, The Technology of Artificial Lift Methods, Vol. 2a, PennWell Books, 1980.
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versity of Tulsa, January 1999.
5. Lapedes, D. H., McGraw-Hill Encyclopedia of the Geological Sciences, McGraw-Hill, 1978.
6. Kaminski, D. A., and Jensen, M. K., Introduction to Thermal and Fluid Engineering, Wiley
and Sons, 2005.
7. Guo, B., Hareland, G., and Rajtar, J., “Computer Simulation Predicts Unfavorable Mud Rate and
Optimum Air Injection Rate for Aerated Mud Drilling,” SPE Paper 26892, Presented at the SPE
Eastern Regional Conference and Exhibition, Pittsburgh, Pennsylvania, November 2–4, 1993.
8. Gatlin, C., Petroleum Engineering: Drilling and Well Completions, Prentice-Hall, 1960.
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10. Beyer, A. H., Millhone, R. S., and Foote, R. W., “Flow Behavior of Foam as a Well Circulating
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11. Underbalanced Drilling Manual, Gas Research Institute, GRI Reference No. GRI-97/0236,
1997.