FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ1

When a well is used for dewatering, what is the required time frame the well must be permanently abandoned once dewatering has finished

5 days or less

10 days or less

30 days or less

60 days or less

The well screen length is optimum when:

Chosen with relation to the thickness of the aquifer

Chosen with respect to available drawdown

Chosen based on stratifications of the aquifer

All of the above

None of the above

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

Grout may be introduced by a pump through a pipe that may be introduced into the _______ outside the casing

Mud

Borehole

Top space

Annular space

Drilling fluid essential functions include all of the following EXCEPT:

Seal wall of the borehole to reduce fluid loss

Cool and clean the drill bit

Support the wall of the borehole to prevent caving

Pushes cuttings to t he bottom of the drilling hole

All of the above