Page 710 - Air and Gas Drilling Manual

Appendix
E

Direct Circulation Minimum Volumetric Flow rates

This appendix gives the direct circulation minimum volumetric flow rates for
deep air drilled boreholes. For API Mechanical Equipment standard conditions the
figures that follow give the minimum volumetric flow rates as a function of drilling
depth for the drilling rates of 0 ft/hr, 30 ft/hr, 60 ft/hr, 90 ft/hr, and 120 ft/hr. These
figures are developed from the calculations presented in Chapter 8. The calculations
are carried out assuming sedimentary rock formations.
Figure E-1: Borehole 4 1/2 inches, drill pipe 2 3/8 inches.
Figure E-2: Borehole 4 3/4 inches, drill pipe 2 3/8 inches.
Figure E-3: Borehole 6 1/4 inches, drill pipe 2 7/8 inches.
Figure E-4: Borehole 6 3/4 inches, drill pipe 2 7/8 inches.
Figure E-5: Borehole 7 3/8 inches, drill pipe 2 7/8 inches.
Figure E-6: Borehole 6 1/4 inches, drill pipe 3 1/2 inches.
Figure E-7: Borehole 6 3/4 inches, drill pipe 3 1/2 inches.
Figure E-8: Borehole 7 3/8 inches, drill pipe 3 1/2 inches.
Figure E-9: Borehole 7 7/8 inches, drill pipe 3 1/2 inches.
Figure E-10: Borehole 7 3/8 inches, drill pipe 4 inches.
Figure E-11: Borehole 7 7/8 inches, drill pipe 4 inches.
Figure E-12: Borehole 8 3/4 inches, drill pipe 4 inches.
Figure E-13: Borehole 7 7/8 inches, drill pipe 4 1/2 inches.
Figure E-14: Borehole 8 3/4 inches, drill pipe 4 1/2 inches.
Figure E-15: Borehole 9 inches, drill pipe 4 1/2 inches.
Figure E-16: Borehole 8 3/4 inches, drill pipe 5 inches.
Figure E-17: Borehole 9 inches, drill pipe 5 inches.
Figure E-18: Borehole 9 7/8 inches, drill pipe 5 inches.
Figure E-19: Borehole 11 inches, drill pipe 5 inches.
Figure E-20: Borehole 9 7/8 inches, drill pipe 5 1/2 inches.
Figure E-21: Borehole 11 inches, drill pipe 5 1/2 inches.
Figure E-22: Borehole 12 1/4 inches, drill pipe 5 1/2 inches.
Figure E-23: Borehole 11 inches, drill pipe 6 5/8 inches.
Figure E-24: Borehole 12 1/4 inches, drill pipe 6 5/8 inches.
Figure E-25: Borehole 15 inches, drill pipe 6 5/8 inches.
Figure E-26: Borehole 17 1/2 inches, drill pipe 6 5/8 inches.

E-1
Copyright 2001 by The McGraw-Hill Companies, Inc. Click Here for Terms of Use.