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a) a lot of time
b) less time
c) more time
d) several minutes
16. After the crew runs the tubing string, the operator has a crew
install___________.
a) Service rig
b) Casing
c) Christmas tree
d) No correct answer
17.Valves on the Christmas tree allow the operator__________
a) to control the amount of production.
b) to shut in the well completely to stop it from producing.
c) to direct the flow of production through various surface lines as required.
d) All variants are possible.
18. Usually, once the crew installs the Christmas tree, the well is_________
a) complete.
b) killed.
c) perforated.
d) All variants are possible.
19. If the formation reacts favorably to acid, _________ may improve flow.
a) perforating
b) flowing
c) pumping hot oil
d) acidizing
20.Hydrocarbons sometimes exist in a formation but cannot flow readily into the
well because the formation has very low ______
a) permeability.
b) porosity.
c) capillarity.
d) all variants are possible
21. The flow may be improved by____________.
a) fracturing
b) acidizing
c) both
d) no correct variant
22. The fracturing crew adds _______________ to the fracturing fluid.
a) a drilling mud
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