FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION EXAM

What are reasons a well screen might be pulled

Removal of encrusting of materials on the screen that cannot be removed from chemical treatment

Corrosion of the screen allowing sand to enter water

Abandonment of the well and retrieval of parts

All of the above

When grout has to be placed on casing greater than 20 feet below land surface one of the following two methods must be used:

Gravity flow

Pumping

Pressure

B & C

Thermoplastic casing shall not be driven by impact, but may be pushed

True

False

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

After chlorination, how long should the well be pumped before placing the well back into use:

Chlorine tested at 50ppm in water

Until water changes color

When water changes temperature

No detectable chlorine is found

WELL CONTRACTORS CERTIFICATION CONSTRUCTION EXAM