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Question 1 of 10

1. Question
Which of the following are purposes of drilling fluid?
- Maintaining wellbore stability
- Controlling formation pressures
- Transporting hydrocarbons to the surface
- Cooling and lubricating the bit
- Chemically eroding the formations
- Transporting cuttings to surface
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Question 2 of 10

2. Question
In the 1920’s the Baroid company pioneered the addition of which common clay to improve viscosity and carrying capacity?
- Bentonite
- Calcium Carbonate
- Nut Plug
- Barite
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Question 3 of 10

3. Question
Which of the following statements about Water-Based Muds [WBM] are true?
- WBMs may not perform well in high-temperature environments due to thermal degradation of certain additives.
- WBMs may have higher fluid loss rates in permeable formations, requiring additional additives to control filtration properties.
- The water base provides high lubricity, reducing torque and drag on the drill string and extending the life of drilling equipment.
- WBMs are typically more expensive than SBMs and can be comparable in cost to OBMs.
- Brine-based drilling fluids are a subset of water-based muds
- WBMs typically have a very low pH (2-3).
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Question 4 of 10

4. Question
Which type of drilling fluid is typically subject to the strictest environmental controls?
- Water based
- Oil based
- Synthetic based
- Brine
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Question 5 of 10

5. Question
Why does the M/LWD Field Engineer need to monitor the Potassium levels in the mud report?
- For input into logging software for gamma corrections
- To anticipate the effects of invasion on the resistivity log
- To counter/ pre-empt the effects of signal attenuation
- For input into logging software for resistivity corrections
- To determine the most suitable type of battery to be used
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Question 6 of 10

6. Question
The mud report states the Sand Content is 1%. How can the M/LWD Field Engineer confirm the value is correct?
- Calculate the percentage based on concentration of low gravity solids
- Ask the Mud Engineer
- Use the Mud Engineer's viscometer
- Use the Sand Content Kit
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Question 7 of 10

7. Question
The primary method of removing Low Gravity Solids from the mud is the use of shale shakers.
- True
- False
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Question 8 of 10

8. Question
What is the name of the Black Diamond downhole screen which can be beneficial in the break up of clumps of LCM which could block an MWD tool?
- Ultra-Screen
- Detritus Destroyer
- Detritus Defender
- Debris Defender
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Question 9 of 10

9. Question
MWD tools have documented maximum acceptable concentrations of various types of LCM. For the limit to be applicable which of the following statements are true?
- The maximum concentration is only applicable in oil-based muds.
- The maximum concentration is the same for all tools.
- The LCM must be thoroughly mixed into the mud before addition to the circulation system.
- The maximum concentration can be exceeded if the mud weight is below 11 ppg.
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Question 10 of 10

10. Question
What information should the M/LWD Field Engineer record when LCM is added to the circulation system?
- LCM concentration/ amount of LCM
- Type and size of LCM
- Potassium concentration
- Mud temperature
- Mud gas analysis
- Time
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