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4. What is the walking beam?
5. What makes the bit drill?
6. What is a bailer?
7. What problem led to cable-tool drilling’s demise?
8. How do the rotary crew members put the bit on the bottom of the hole?
9. What is a rotary table?
10. Why does not a rotary rig crew have to bail cuttings?

Choose the correct answer.
1. The first drilling technique is cable-tool drilling. What is the second one?
a) slant drilling
b) rotary drilling
c) direction drilling
d) no correct variant

2. When did the Chinese drill wells with primitive yet efficient cable-tool rigs?
a) 2,000 years ago
b) 3,000 years ago
c) 4,000 years ago
d) no correct variant

3. To quarry rocks for the pyramids, the ancient Egyptians drilled holes using.
a) direction drilling
b) slant drilling
c) hand-powered rotating bits
d) no correct variant

4. The fluid is usually a special liquid called …
a) “drilling mud”
b) “rotary mud”
c) “sland mud”
d) no correct variant

5. A fluid can be a liquid, a gas, or …
a) a combination of two
b) a flame
c) a mud
d) no correct variant

6. With the bit on bottom, the rig can rotate it in one of … ways.
a) two
b) three
c) four
d) no correct variant

7. What does a rotary bit have in comparison with a chisel?
a) bar
b) rows of teeth
c) bit
d) no correct variant

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