CWD Technology & Digital Tools 2

Question 1

Which type of downhole camera system is best suited for inspecting casing integrity in a turbid, water-filled well?

Accepted Answer

Sonar/acoustic imaging camera

Answer

Sonar/acoustic imaging cameras use sound waves to image well interiors in murky or turbid water where optical cameras cannot see clearly.

Question 2

A driller uses a data logger during a pump test. What primary advantage does electronic data logging provide over manual reading?

Accepted Answer

It captures continuous high-frequency water level measurements

Answer

Electronic data loggers record water levels at programmable intervals (e.g., every second), capturing transient data that manual readings would miss.

Question 3

What does the term 'mud weight' refer to when using electronic drilling instrumentation?

Accepted Answer

The density of drilling fluid measured in pounds per gallon

Answer

Mud weight refers to the density of drilling fluid, typically measured in pounds per gallon (ppg), which is monitored to maintain proper borehole pressure.

Question 4

A GPS/GNSS survey unit on a drill rig is most commonly used to:

Accepted Answer

Record precise borehole location coordinates for regulatory submittals

Answer

GPS/GNSS units are used to record accurate latitude/longitude coordinates of the well location, which are required on most state well completion reports.

Question 5

Which software feature in modern well-design programs helps drillers ensure casing strings do not exceed tensile yield limits?

Accepted Answer

Load case analysis and casing stress modeling

Answer

Casing stress modeling within well-design software calculates axial, burst, and collapse loads to ensure casing selection meets safety factors.

(CWD) Certified Well Driller Practice Test

(CWD) Certified Well Driller Practice Test

CWD Technology & Digital Tools 2