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a) first soil
b) main soil
c) top soil
d) no correct variant

30. Give the Ukrainian equivalent for the term “spudded”:
a) забурена свердловина
b) обвалена свердловина
с) не робоча свердловина
d) no correct variant

Unit 3

Cable-tool and rotary drilling
Answer the following questions.

1. What are the two drilling techniques?
2. Why did the ancient Egyptians drill holes using hand-powered rotating bits?
3. What did Colonel Drake and Uncle Billy use to drill the Oil Creek site?
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

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