Info

Reference Line

FIGURE 2.3 Practical chart for drill collar selection—2-in. ID. (From Drilco, Division of Smith International, Inc.).

63/4

53/4

43/4

Reference Line

FIGURE 2.4 Practical chart for drill collar selection—2-4 -in. ID. (From Drilco, Division of Smith International, Inc.).

5V2 REG

3V2 REG

3V2 E.H

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