Page 22 - 4924

6. Are mobile offshore drilling unit portable or not?
a) yes
b) no
c) some are
d) no correct variant

7. Floaters include semisubmersibles and …
a) winch
b) drill ships
c) windlass
d) barges

8. The first MODU was …
a) not portable
b) a semisubmersible
c) a submersible
d) no correct variant

9. The first MODU drilled its initial well in …
a) 1943
b) 1955
c) 1949
d) no correct variant

10. In their heyday in the early 1960s, the biggest bottle-type submersibles drilled
in … water depths
a) 55-metre
b) 33-metre
c) 45-metre
d) no correct variant

11. A special type of submersible rig is …
a) an ice submersible
b) an arctic submersible
c) a cold submersible
d) no correct variant

12. A jackup's legs can be … columns
a) oval
b) squre
c) cylindrical
d) no correct variant

13. Floating offshore drilling rigs include semisubmersibles and …

20