CWD Project Planning & Execution 3

Question 1

A driller is asked to drill a municipal supply well. Compared to a residential well, what additional planning consideration is MOST important?

Accepted Answer

Conducting a detailed hydrogeological study and yield testing per municipal standards

Answer

Municipal wells require comprehensive hydrogeological studies and rigorous yield testing to ensure adequate and safe public water supply.

Question 2

What does a drilling mud program specify during project planning?

Accepted Answer

The type, weight, and viscosity of drilling fluid to use in each formation

Answer

A drilling mud program specifies fluid properties to maintain borehole stability and control formation pressures during drilling.

Question 3

Which factor is MOST likely to cause a project schedule overrun during well drilling?

Accepted Answer

Encountering unexpected hard rock formations that require bit changes and slower penetration rates

Answer

Unexpected hard rock or difficult geology is the most common cause of drilling schedule delays and cost overruns.

Question 4

When planning casing depth for a new well, which geologic condition would require setting the casing deeper?

Accepted Answer

Shallow zones of contaminated groundwater or unstable unconsolidated sediments

Answer

Contaminated or unstable shallow zones require the casing to be extended through them to protect the well and the water supply.

Question 5

During project execution, a driller encounters a zone of artesian pressure causing water to flow uncontrolled from the borehole. What is the correct immediate action?

Accepted Answer

Install and seal the surface casing to control the flow before proceeding

Answer

Artesian flow must be controlled by installing and sealing casing before drilling continues to prevent resource waste and potential hazards.

(CWD) Certified Well Driller Practice Test

(CWD) Certified Well Driller Practice Test

CWD Project Planning & Execution 3