FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ1

When an open borehole has been drilled below the depth to which the casing is to be grouted, what must happen:

Lower part of the hole must be backfilled

A bridge must be set in the hole

Sticks should be placed in frame

Both A & B

Air rotary drilling is when air is circulated through the drill pipe, through ports in the drill bit and upward in the _____ space around the drill pipe

Bore

Annular

Ring

Flat

The well, if constructed to obtain water from an unconsolidated rock formation, shall be equipped with a screen that will prevent the entrance of formation material into the well

True

False

What can speed up the operation of the bail down methods of well screening:

More force

Add extra weight

Drill a pilot hole through the formation

None of the above

What conditions can be found in corrosive water where the pH is lower 7:

Hydrogen sulfide

Carbon dioxide

Chlorides

All of the above

None of the above