FlexiQuiz - WELL CONTRACTORS CERTIFICATION CONSTRUCTION STANDARDS QUIZ1

What size well screens are better pulled using a pipe of smaller diameter locked inside the screen by means of a sand joint

2 inches

4 inches

6 inches

Both B & C

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

Haw is sacking used when removing a wells screen

Strips are fastened to the pulling pipe

Wired just above a coupling at the lower end of the pulling pipe

Wired just above a ring welded on the pipe

All 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

Well point systems are typically used under the following conditions

Water table is within a few feet of the ground surface

Pumping from wells is with suction lift

Water bearing sand must exist at depths of 20-50 ft

All of the above