FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ1

When might spacing between wells in well point systems be greater than 50ft

Depth and thickness of the aquifer allow well screens 10ft or longer

Large pockets of rocks within aquifer

Piping is too large

None of the above

When a repair is performed on a well the following must be adhered to:

Wellhead must remain at least 12 inches above surface

The grout removed must be replaced

All materials used in repair must be approved

All 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

What is the purpose of a seal on a gravel pack

Close the annular space between the top of the extension pipe and the inside of the well casing installed in the upper portion of the well

Prevent upward movement of the gravel when the well is pumped

To allow the flow of gravel into the annular space when well is in use

Both A & B

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