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c) a chisel
d) no correct variant

15. What is part of the system that rotates the bit?
a) casing
b) kelly
c) chisel
d) no correct variant

16. Usually, reserve pits are relatively shallow, maybe no more than … deep
a) 3metres
b) 8 metres
c) 6 metres
d) no correct variant

17. At a land site, the site-preparation contractor may dig ....
a) a rathole
b) a reserve pit
c) a mousehole
d) no correct variant

18. Is that true that today, companies drill wells in frozen wildernesses, remote deserts,
mosquito-ridden marshes, hot and humid jungles?
a) yes
b) no
с) no correct variant

19.What does the term “borehole” mean?
a) a mixture of clays, water, and chemicals pumped down the drill string while an oil well is
being drilled
b) a deep, narrow hole made in the ground, esp. to locate water or oil
c) pieces cut off from something, especially what remains when something is being trimmed or
prepared
d) no correct variant

20.Give the Ukrainian equivalent for the term “bottom-supported drilling rig”:
a) морська бурова основа
b) запасний амбар
c) вічна мерзлота
d) no correct variant

21.Give the English equivalent for the term “вічна мерзлота”:
a) permafrost
b) seismic record
c) rathole
d) no correct variant

22. Explain the meaning of the term “buoy”:
a) an anchored float serving as a navigation mark, to show reefs or other hazards
b) a mixture of clays, water, and chemicals pumped down the drill string while an oil well is
being drilled
c) water held underground in the soil or in pores

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