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11. The Egyptians drilled several holes in a line and stuck … in the holes
a) steel nails
b) dry wooden pegs
c) iron details
d) no correct variant

12. Where did cable-tool drilling work?
a) solid formations
b) liquid
c) hard-rock formations
d) no correct variant

13. The drillers had to run a special basket into the hole to retrieve and remove the
pieces of rock, or cuttings, the bit made. What was it?
a) a bit
b) a bailer
c) a chisel
d) no correct variant

14.The wall cake created by circulating drilling fluid prevented formations from …
a) destroying
b) drilling
c) collapsing
d) no correct variant

15.Give the Ukrainian equivalent for the term “rotary table”:
a) роторний канат
b) роторний пристрій
c) роторний стіл
d) no correct variant

16.Regardless of the system used to rotate the bit, the driller, the person operating
the rig, allows some of the weight of the pipe to press down on the …
a) chisel
b) bit
c) rotary rig
d) no correct variant

17. Where didn't cable-tool technique work?
a) in soft formations
b) in liquid
c) in solid surface
d) no correct variant

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