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STANDARD HANDBOOK OF PETROLEUM & NATURAL GAS ...

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Hoisting System 603<br />

WEIGHT <strong>OF</strong> FLUID, LB PER CU. FT.<br />

0 I5 30 45 60 75 90 I05 120 135 150 165 35<br />

30<br />

JOINT. THE APP<br />

CORRECTION FO<br />

+OPERCENT FOR RANGE IAN0<br />

25<br />

20<br />

I5<br />

IO<br />

5<br />

OR<br />

<strong>GAS</strong><br />

WEIGHT <strong>OF</strong> FLUID, LB PER GAL.<br />

Figure 4-78. Effective weight of pipe-in drilling fluid [ll].<br />

0<br />

1. Core ahead length of core barrel.<br />

2. Pull up length of kelly.<br />

3. Put kelly in rat hole.<br />

4. Pick up single.<br />

5. Lower drill stem in hole.<br />

6. Pick up kelly.

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