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STANDARD HANDBOOK OF PETROLEUM & NATURAL GAS ...

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Table 4-111<br />

Turbine Motor, 6%-in. Outside Diameter, Three<br />

Motor Sections, 318 Stages, Mud Weight 10 lblgal<br />

Downhole Motors 871<br />

Circulation Optimum Differential Thrust<br />

Rate Torque* Bit Speed Pressure Maximum Load<br />

(9pm) (ft-lbs) (rpm) (Psi) Horsepower" (1000 Ibs)<br />

200 529 403 485 40 8<br />

250 827 504 758 79 12<br />

300 1191 605 1092 1 37 17<br />

350 1622 706 1486 21 8 23<br />

400 2118 807 1941 326 30<br />

450 2681 908 2457 464 38<br />

*At optimum power<br />

Courtesy Eastman-Christensen<br />

5000<br />

Circulation Rate 400 gprn<br />

Mud Weight 10 ppo<br />

500<br />

2500<br />

4000<br />

400<br />

2000<br />

2 3000<br />

P<br />

"<br />

U c<br />

03<br />

P<br />

I- 2000<br />

300<br />

200<br />

0<br />

a<br />

u<br />

1500 f<br />

e<br />

?!<br />

0<br />

lo00<br />

100<br />

500<br />

0<br />

500 lo00 1500 2000<br />

Bit Speed (rprn)<br />

Figure 4-194. Turbine motor, 6%-in. outside diameter, three motor sections, 31 8<br />

stages, 400 gal/min, 1 0-lb/gal mud weight. (Courtesy Eastman-Christensen.)

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