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

In hydraulic rotary drilling, borehole is cut with a rotating bit while cuttings are removed with ____

Air hose

Additional drilling

Drilling fluid

None of the above

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

What are the most important things when choosing material for a screen:

Mineral content of the water

Presence of bacterial slimes

Strength requirements of the screen

All of the above

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