Volumetric Well Control Quiz
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Volumetric and Lubricate & Bleed are special well control methods which will be used when the circulation is not possible. It is very important to understand the concept because without right knowledge, you may unintentionally bring more influx. This quiz will focus on Volumetric and Lubricate & Bleed and there are a total of 20 questions which cover both concept and calculations. Therefore you need to use a calculator to solve the problem. We wish you would enjoy doing the quiz and please feel free to leave any questions/comments.
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Question 1 of 20
1. Question
Boyle’s Law states that gas pressure directly relates to its volume. If a volume of a gas is compressed, the pressure in the gas will increase. On the other hand, if a gas expands, the pressure in the gas will decrease.
How do you state it mathematically?
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Question 2 of 20
2. Question
Which of the following situations would require the use of volumetric well control?
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Question 3 of 20
3. Question
What is the annulus capacity factor (bbl/ft) between 18 inch hole and 13 3/8” casing?
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Annular capacity = (182 – 13.3752) ÷ 1029.4 = 0.141 bbl/ft
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Annular capacity = (182 – 13.3752) ÷ 1029.4 = 0.141 bbl/ft
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Question 4 of 20
4. Question
Is volumetric control method a well kill method?
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Question 5 of 20
5. Question
Before executing the volumetric well control method, which parameters need to be determined?
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Question 6 of 20
6. Question
What is the typical recommended safety factor for volumetric well control?
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Question 7 of 20
7. Question
What is the Mud Increment based on the following information?
Pressure Increment = 100 psi
Current mud weight = 9.0 ppg
Annulus capacity factor = 0.055 bbl/ft
Correct
Mud Increment = (100 x 0.055) ÷ ( 0.052 x 9) = 11.75 bbl
Incorrect
Mud Increment = (100 x 0.055) ÷ ( 0.052 x 9) = 11.75 bbl
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Question 8 of 20
8. Question
While gas bubble migrates, does bottomhole pressure goes up or down or stay same?
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Question 9 of 20
9. Question
While bleeding mud from the annulus, does hydrostatic pressure goes up or down or stay same?
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Question 10 of 20
10. Question
According to Boyle’s law, as the gas bubble expands, the pressure in the bubble _____.
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Question 11 of 20
11. Question
What is the correct procedure for Volumetric well control?
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Question 12 of 20
12. Question
Before performing the volumetric method, what are surface equipment requirements that you need to consider?
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Question 13 of 20
13. Question
When the gas migrates to surface using the volumetric method, what is the best way to remove gas from the well?
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Question 14 of 20
14. Question
What is the correct statement for lubricate and bleed?
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Question 15 of 20
15. Question
Please fill in the blank.
Lubricate: Pumping mud into the well will add hydrostatic pressure and compress gas therefore the bottom hole pressure will _____.
Bleed: Releasing gas from the well with controlled manner will ____ decrease the bottom hole pressure.
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Question 16 of 20
16. Question
Why does bottom hole pressure increase every lubrication step?
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Question 17 of 20
17. Question
Why does surface pressure decrease with each step of lubricate and bleed?
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Question 18 of 20
18. Question
The annulus capacity factor is used to determine ________.
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Question 19 of 20
19. Question
One of operational concerns regarding lubricate and bleed is surface pressure. When you compress gas on the surface, the surface pressure can exceed _____.
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Question 20 of 20
20. Question
Why volumetric is quite tricky to perform in oil based mud?
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