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18. The driller gradually releases the drawworks brake, and the rotating bit touches
… and begins making hole.
a) rotary table;

b) casing;
c) bottom;
d) no correct answer.

19. The sequence with a top drive is much … as with a rotary table and kelly.
a) similar;
b) the same;
c) easier;

d) no correct answer.

20. With both a top drive and a rotary table system, using an instrument called the
"… ," the driller monitors the amount of weight put on the bit by the drill
collars.
a) weight indicator;

b) balance;
c) drilling indicator;
d) no correct answer.

21. After the bit drills about … metres, which is about the length of a joint of drill
pipe, crew members must add a new joint of pipe to drill deeper.

a) 100;
b) 54;
c) 9;

d) no correct answer.

22. Once the joint is … , the driller engages a kelly spinner, which is a special air
motor mounted near the top of the kelly.

a) loosened;
b) tightened;
c) torn off;

d) nocorrect answer.

23. They stab the kelly into the joint in the … , and the driller spins up the kelly

into the joint using the kelly spinner.
a) rotary table
b) mousehole;

c) casing;

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