IADC WellSharp Supervisor Level 4
Well Control Examination
QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES.pdf |
IADC WellSharp Supervisor Level 4 Well Control | Comprehensive
Examination
IADC WellSharp Supervisor Level 4 Well Control
Examination QUESTIONS AND CORRECT ANSWERS
WITH RATIONALES.pdf actual exam preparation document
INTRODUCTION
This document is an important and very helpful preparation
resource for IADC WellSharp Supervisor Level 4 Well Control
Examination QUESTIONS AND CORRECT ANSWERS
WITH RATIONALES.pdf. Every item uses a focused exam
stem, four response options, a keyed response, and a clear
rationale, making it easier to understand the subject, spot
distractors, and build real exam confidence.
Page 1
, Question 1
During a kick on a deepwater well, the shut-in drillpipe pressure (SIDPP) is
800 psi and shut-in casing pressure (SICP) is 1200 psi. The well is vertical with
a TVD of 15,000 ft and current mud weight is 12.5 ppg. What is the formation
pressure?
A. 9,750 psi
B. 10,550 psi
C. 11,350 psi
D. 12,150 psi
Correct Answer: B - 10,550 psi
RATIONALE
Formation pressure = SIDPP + hydrostatic pressure of mud.
Hydrostatic = 0.052 * 12.5 ppg * 15,000 ft = 9,750 psi. Adding SIDPP
(800 psi) gives 10,550 psi. Distractors incorrectly add SICP or
miscompute hydrostatic.
Question 2
In a horizontal well with a 10,000 ft lateral section, a gas kick is taken while
drilling. Which of the following best explains why the shut-in casing pressure
(SICP) may be significantly higher than in a vertical well?
A. Gas migration is faster in horizontal sections.
B. The horizontal section increases the effective hydrostatic pressure.
C. Gas tends to stratify and occupy a larger volume in the horizontal
annulus, reducing hydrostatic pressure more than in a vertical well.
D. The friction pressure losses are higher in horizontal wells during
shut-in.
Correct Answer: C - Gas tends to stratify and occupy a larger
volume in the horizontal annulus, reducing hydrostatic pressure
more than in a vertical well.
Page 2
, RATIONALE
In horizontal wells, gas can stratify along the top of the annulus,
occupying a larger volume and displacing more mud, thus reducing
hydrostatic pressure significantly and increasing SICP. Vertical wells
have gas rise as a slug. Other options are incorrect mechanisms.
Question 3
A kick is taken while drilling with a 12.0 ppg mud. SIDPP = 600 psi, SICP =
900 psi. The well is 12,000 ft TVD. Kill mud weight required is:
A. 12.5 ppg
B. 13.0 ppg
C. 13.5 ppg
D. 14.0 ppg
Correct Answer: B - 13.0 ppg
RATIONALE
Kill mud weight = current mud weight + (SIDPP / (0.052 * TVD)).
SIDPP/(0.052*12000) = 600/624 = 0.96 ppg. 12.0 + 0.96 = 12.96
13.0 ppg. Distractors result from miscalculation or using SICP.
Question 4
Which of the following is the primary reason for conducting a slow pump rate
test before drilling out casing?
A. To determine the maximum allowable annulus surface pressure
(MAASP).
B. To establish the relationship between pump rate and circulating
pressure for use in kill calculations.
C. To verify the BOP closing times.
D. To calibrate the pit level sensors.
Correct Answer: B - To establish the relationship between pump
rate and circulating pressure for use in kill calculations.
Page 3
, RATIONALE
Slow pump rate test (or slow circulating rate) establishes the pressure
losses in the system at a reduced rate, which is used to calculate the
initial and final circulating pressures for the kill. MAASP is calculated
separately. BOP closing times and pit sensors are tested separately.
Question 5
In the Wait and Weight method, after the kill mud reaches the bit, what should
happen to the casing pressure if the kill is proceeding correctly?
A. It should remain constant at the initial shut-in casing pressure.
B. It should decrease as the kill mud fills the annulus.
C. It should increase due to gas expansion.
D. It should be equal to the drillpipe pressure.
Correct Answer: B - It should decrease as the kill mud fills the
annulus.
RATIONALE
Once kill mud reaches the bit and begins to displace the annulus, the
hydrostatic pressure increases, so casing pressure should decrease if
the bottom hole pressure is held constant. Initially, casing pressure
may increase as gas migrates, but after kill mud reaches bit, it
decreases. Other options are incorrect.
Question 6
A well is being drilled with a 9.0 ppg mud. The casing shoe is at 8,000 ft TVD
with a leak-off test (LOT) result of 15.0 ppg equivalent. What is the maximum
allowable annulus surface pressure (MAASP)?
A. 1,040 psi
B. 1,560 psi
C. 2,080 psi
D. 2,600 psi
Page 4
Well Control Examination
QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES.pdf |
IADC WellSharp Supervisor Level 4 Well Control | Comprehensive
Examination
IADC WellSharp Supervisor Level 4 Well Control
Examination QUESTIONS AND CORRECT ANSWERS
WITH RATIONALES.pdf actual exam preparation document
INTRODUCTION
This document is an important and very helpful preparation
resource for IADC WellSharp Supervisor Level 4 Well Control
Examination QUESTIONS AND CORRECT ANSWERS
WITH RATIONALES.pdf. Every item uses a focused exam
stem, four response options, a keyed response, and a clear
rationale, making it easier to understand the subject, spot
distractors, and build real exam confidence.
Page 1
, Question 1
During a kick on a deepwater well, the shut-in drillpipe pressure (SIDPP) is
800 psi and shut-in casing pressure (SICP) is 1200 psi. The well is vertical with
a TVD of 15,000 ft and current mud weight is 12.5 ppg. What is the formation
pressure?
A. 9,750 psi
B. 10,550 psi
C. 11,350 psi
D. 12,150 psi
Correct Answer: B - 10,550 psi
RATIONALE
Formation pressure = SIDPP + hydrostatic pressure of mud.
Hydrostatic = 0.052 * 12.5 ppg * 15,000 ft = 9,750 psi. Adding SIDPP
(800 psi) gives 10,550 psi. Distractors incorrectly add SICP or
miscompute hydrostatic.
Question 2
In a horizontal well with a 10,000 ft lateral section, a gas kick is taken while
drilling. Which of the following best explains why the shut-in casing pressure
(SICP) may be significantly higher than in a vertical well?
A. Gas migration is faster in horizontal sections.
B. The horizontal section increases the effective hydrostatic pressure.
C. Gas tends to stratify and occupy a larger volume in the horizontal
annulus, reducing hydrostatic pressure more than in a vertical well.
D. The friction pressure losses are higher in horizontal wells during
shut-in.
Correct Answer: C - Gas tends to stratify and occupy a larger
volume in the horizontal annulus, reducing hydrostatic pressure
more than in a vertical well.
Page 2
, RATIONALE
In horizontal wells, gas can stratify along the top of the annulus,
occupying a larger volume and displacing more mud, thus reducing
hydrostatic pressure significantly and increasing SICP. Vertical wells
have gas rise as a slug. Other options are incorrect mechanisms.
Question 3
A kick is taken while drilling with a 12.0 ppg mud. SIDPP = 600 psi, SICP =
900 psi. The well is 12,000 ft TVD. Kill mud weight required is:
A. 12.5 ppg
B. 13.0 ppg
C. 13.5 ppg
D. 14.0 ppg
Correct Answer: B - 13.0 ppg
RATIONALE
Kill mud weight = current mud weight + (SIDPP / (0.052 * TVD)).
SIDPP/(0.052*12000) = 600/624 = 0.96 ppg. 12.0 + 0.96 = 12.96
13.0 ppg. Distractors result from miscalculation or using SICP.
Question 4
Which of the following is the primary reason for conducting a slow pump rate
test before drilling out casing?
A. To determine the maximum allowable annulus surface pressure
(MAASP).
B. To establish the relationship between pump rate and circulating
pressure for use in kill calculations.
C. To verify the BOP closing times.
D. To calibrate the pit level sensors.
Correct Answer: B - To establish the relationship between pump
rate and circulating pressure for use in kill calculations.
Page 3
, RATIONALE
Slow pump rate test (or slow circulating rate) establishes the pressure
losses in the system at a reduced rate, which is used to calculate the
initial and final circulating pressures for the kill. MAASP is calculated
separately. BOP closing times and pit sensors are tested separately.
Question 5
In the Wait and Weight method, after the kill mud reaches the bit, what should
happen to the casing pressure if the kill is proceeding correctly?
A. It should remain constant at the initial shut-in casing pressure.
B. It should decrease as the kill mud fills the annulus.
C. It should increase due to gas expansion.
D. It should be equal to the drillpipe pressure.
Correct Answer: B - It should decrease as the kill mud fills the
annulus.
RATIONALE
Once kill mud reaches the bit and begins to displace the annulus, the
hydrostatic pressure increases, so casing pressure should decrease if
the bottom hole pressure is held constant. Initially, casing pressure
may increase as gas migrates, but after kill mud reaches bit, it
decreases. Other options are incorrect.
Question 6
A well is being drilled with a 9.0 ppg mud. The casing shoe is at 8,000 ft TVD
with a leak-off test (LOT) result of 15.0 ppg equivalent. What is the maximum
allowable annulus surface pressure (MAASP)?
A. 1,040 psi
B. 1,560 psi
C. 2,080 psi
D. 2,600 psi
Page 4
