Wireline and LWD 101

1. What does MWD stand for?

• a. Measurement with direction
• b. Measuring while developing
• c. Measurement while drilling

2. What does LWD stand for?

• a. Logging while drilling
• b. Looking while drilling
• c. Location while drilling

3. What is the difference between RSS and motor?

• a. Motors can only be used in gas environment
• b. RSS can only be used to drill in water environment.
• c. RSS has an electronics section and can receive commands while drilling.

4. How does the MWD send data to surface?

• a. Sound wave through the drill pipes.
• b. Pressure pulses through the mud column.
• c. Electro-magnetic signal.

5. What does the ARC tool measure?

• a. Density
• b. Porosity
• c. Resistivity

6. What does the ADN tool measure?

• a. Magnetic impedance
• b. Depth
• c. Bulk density and neutron porosity

7. What can cause the tools to fail downhole?

• A. Water in the formation
• B. Oil in the formation
• C. Shocks due to drilling conditions

8. What are the different collar sizes (in inches) of the TeleScope tool

• a. 9, 8.5, 6.75
• b. 16,12, 4.75
• c. 12,6.75,4.75

9. Name two measurements done by the MWD (select all that apply)

• a. Azimuth
• b. Inclination
• c. Density
• d. Porosity

10. Why is drilling mud needed? (select all that apply)

• a. Carry the cuttings
• b. It's not needed
• c. Maintain the hydrostatic pressure
• d. Keep the tools clean