Page 81 - 6200

8.What is a bailer?
a) a hollow tube used to retrieve groundwater samples from monitoring wells
b) a machine for moving loads by means of a flexible element
c) the machine used to drill a wellbore
d) no correct variant

9. What is a winch?
a) a metal pipe or tube used as a lining for a water, oil, or gas well.
b) the machine used to drill a wellbore
c) a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust
the "tension" of a rope or wire rope (also called "cable" or "wire cable")
d) no correct variant

10. To understand the principle of cable-tool drilling, one should picture a …
a) an electric device
b) a digital technique
c) a child's seesaw
d) no correct variant

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 …

57