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161277565.xls.ms_office MITCHELL ENGINEERING PROGRAMS

COPYRIGHT 1990 MITCHELL ENGINEERING, PO BOX 1492. GOLDEN, CO, 80402, USA (303) 273 3744

POWER LAW PRESSURE LOSSin PIPE & ANNULUS

725 CIRCULATION RATE (gpm): 10,000 LENGTH PIPE (ft):

12.25 HOLE SIZE (inch): 5 PIPE OD (inch):

10.5 MUD WT (ppg): 4.276 PIPE ID (inch):

PIPE 1271 Pressure loss inside pipe (psi)

TURBUL'T FLOW REGIME

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161277565.xls.ms_office MITCHELL ENGINEERING PROGRAMS

SLOPE OF THE LN-LN FLOW CURVE IS ITS DERIVATIVE: dLN(R)/dLN(RPM) = B + 2 * C *LN(RPM)

FANN RPM SLOPE READING FANN RPM SLOPE READING

600 0.7381 42.548 40 0.4694 8.295

pipe flow annular flow.738 n: .469 n:

.003 kv: .012 kv:1.023 x: 1.075 x:

1.047 Fp: 1.123 Fa:

.003 kp: .014 ka:

16.184 Vp: 2.366 Va:

142 Annular Velocity ft/min

23112 Np: 1965 Na:

2459 Laminar: Np< 2827 Laminar: Na 3627 Turbulent: Na>

2459 Transitional: Np between 2827 Transitional: Na between

TURBULENT FLOW REGIME IS: LAMINAR FLOW REGIME IS:

.0760 a: .0720 a:

.2688 b: .2969 b:

.0614 f transitional: .0108 f transitional:

.0007 f laminar .0122 f laminar

.0051 f turbulent: .0076 f turbulent:

.0051 f: .0122 f:

0.000

0.500

1.000

1.500

2.000

2.500

3.000

3.500

4.000

0.000 1.000 2.000 3.000 4.000 5.000 6.000 7.000

LN

OFFANN

READ

INGS

LN OF FANN SPEED

FLOW CURVE FOR THE MUD

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