IADC WellSharp Driller Surface Stack
Examination QUESTIONS AND
VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.pdf
IADC WellSharp Driller Surface Stack Examination QUESTIONS |
Comprehensive Examination
IADC WellSharp Driller Surface Stack Examination
QUESTIONS AND VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.pdf actual exam
INTRODUCTION
This document is an important and very helpful preparation
resource for IADC WellSharp Driller Surface Stack
Examination QUESTIONS AND VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.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 surface stack well, the Driller's Method is selected over the
Wait and Weight method primarily because:
A. It requires less circulating pressure and reduces the risk of formation
fracture.
B. It allows immediate initiation of circulation to remove the influx
before weighting up the mud.
C. It results in lower final kill mud weight and reduced barite usage.
D. It eliminates the need for a kill line and choke manifold adjustments.
Correct Answer: B - It allows immediate initiation of circulation
to remove the influx before weighting up the mud.
RATIONALE
The Driller's Method is chosen when immediate circulation is
necessary to remove the kick before weighting up the mud, often due
to limited pit volume or surface equipment constraints. It does not
inherently reduce pressures or eliminate equipment needs; those are
misconceptions. The Wait and Weight method is preferred when
sufficient mud weight can be prepared quickly.
Question 2
Which of the following is the correct action if the choke line pressure increases
while the casing pressure remains constant during a kill operation?
A. Increase pump rate to compensate for the pressure increase.
B. Check for a plugged choke or downstream flowline restriction.
C. Reduce casing pressure by opening the choke further.
D. Shut in the well and wait for pressure to stabilize.
Correct Answer: B - Check for a plugged choke or downstream
flowline restriction.
Page 2
, RATIONALE
A rise in choke line pressure with constant casing pressure indicates a
restriction downstream, such as a plugged choke or flowline.
Increasing pump rate or adjusting the choke would not address the
root cause. Shutting in is unnecessary and could complicate the
situation.
Question 3
In a surface stack well control operation, the primary function of the annular
preventer is to:
A. Seal around any shape of pipe or the open hole and allow stripping
operations.
B. Provide a backup seal if the pipe rams fail during a kick.
C. Allow circulation through the choke line while drilling ahead.
D. Prevent upward movement of the drill string during a kick.
Correct Answer: A - Seal around any shape of pipe or the open
hole and allow stripping operations.
RATIONALE
The annular preventer is designed to seal around irregular shapes,
including the open hole, and permits stripping pipe under pressure. It
is not primarily a backup for pipe rams, nor does it allow circulation
through the choke line while drilling; that is a function of the choke
manifold. It does not prevent pipe movement.
Question 4
When performing a slow pump rate test, the pump pressure is recorded at 30
strokes per minute. If the pump rate is increased to 60 strokes per minute, the
pump pressure will approximately:
A. Double, assuming turbulent flow.
B. Quadruple, assuming laminar flow.
C. Remain the same, as pressure is independent of rate.
Page 3
, D. Increase by a factor of 1.5, assuming transitional flow.
Correct Answer: B - Quadruple, assuming laminar flow.
RATIONALE
In laminar flow, pump pressure is directly proportional to the square
of the pump rate. Doubling the rate from 30 to 60 spm would
quadruple the pressure. Turbulent flow would show a different
relationship, and pressure is not independent of rate.
Question 5
Which of the following best describes the purpose of a choke manifold in well
control operations?
A. To control the rate of fluid flow from the well while maintaining back
pressure.
B. To separate gas from drilling fluid before it reaches the pits.
C. To provide a means to pump kill fluid into the annulus.
D. To measure the volume of influx entering the wellbore.
Correct Answer: A - To control the rate of fluid flow from the
well while maintaining back pressure.
RATIONALE
The choke manifold is used to regulate flow from the well and apply
back pressure to control the kick. It does not separate gas (that is the
gas buster's role), nor is it used for pumping kill fluid (that is the kill
line). It does not measure influx volume; pit level indicators do that.
Question 6
During a kick, the shut-in casing pressure is 600 psi and shut-in drill pipe
pressure is 300 psi. If the kill mud weight required is 12.5 ppg and the current
mud weight is 10.0 ppg, what is the initial circulating pressure?
A. 300 psi
B. 600 psi
Page 4
Examination QUESTIONS AND
VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.pdf
IADC WellSharp Driller Surface Stack Examination QUESTIONS |
Comprehensive Examination
IADC WellSharp Driller Surface Stack Examination
QUESTIONS AND VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.pdf actual exam
INTRODUCTION
This document is an important and very helpful preparation
resource for IADC WellSharp Driller Surface Stack
Examination QUESTIONS AND VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.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 surface stack well, the Driller's Method is selected over the
Wait and Weight method primarily because:
A. It requires less circulating pressure and reduces the risk of formation
fracture.
B. It allows immediate initiation of circulation to remove the influx
before weighting up the mud.
C. It results in lower final kill mud weight and reduced barite usage.
D. It eliminates the need for a kill line and choke manifold adjustments.
Correct Answer: B - It allows immediate initiation of circulation
to remove the influx before weighting up the mud.
RATIONALE
The Driller's Method is chosen when immediate circulation is
necessary to remove the kick before weighting up the mud, often due
to limited pit volume or surface equipment constraints. It does not
inherently reduce pressures or eliminate equipment needs; those are
misconceptions. The Wait and Weight method is preferred when
sufficient mud weight can be prepared quickly.
Question 2
Which of the following is the correct action if the choke line pressure increases
while the casing pressure remains constant during a kill operation?
A. Increase pump rate to compensate for the pressure increase.
B. Check for a plugged choke or downstream flowline restriction.
C. Reduce casing pressure by opening the choke further.
D. Shut in the well and wait for pressure to stabilize.
Correct Answer: B - Check for a plugged choke or downstream
flowline restriction.
Page 2
, RATIONALE
A rise in choke line pressure with constant casing pressure indicates a
restriction downstream, such as a plugged choke or flowline.
Increasing pump rate or adjusting the choke would not address the
root cause. Shutting in is unnecessary and could complicate the
situation.
Question 3
In a surface stack well control operation, the primary function of the annular
preventer is to:
A. Seal around any shape of pipe or the open hole and allow stripping
operations.
B. Provide a backup seal if the pipe rams fail during a kick.
C. Allow circulation through the choke line while drilling ahead.
D. Prevent upward movement of the drill string during a kick.
Correct Answer: A - Seal around any shape of pipe or the open
hole and allow stripping operations.
RATIONALE
The annular preventer is designed to seal around irregular shapes,
including the open hole, and permits stripping pipe under pressure. It
is not primarily a backup for pipe rams, nor does it allow circulation
through the choke line while drilling; that is a function of the choke
manifold. It does not prevent pipe movement.
Question 4
When performing a slow pump rate test, the pump pressure is recorded at 30
strokes per minute. If the pump rate is increased to 60 strokes per minute, the
pump pressure will approximately:
A. Double, assuming turbulent flow.
B. Quadruple, assuming laminar flow.
C. Remain the same, as pressure is independent of rate.
Page 3
, D. Increase by a factor of 1.5, assuming transitional flow.
Correct Answer: B - Quadruple, assuming laminar flow.
RATIONALE
In laminar flow, pump pressure is directly proportional to the square
of the pump rate. Doubling the rate from 30 to 60 spm would
quadruple the pressure. Turbulent flow would show a different
relationship, and pressure is not independent of rate.
Question 5
Which of the following best describes the purpose of a choke manifold in well
control operations?
A. To control the rate of fluid flow from the well while maintaining back
pressure.
B. To separate gas from drilling fluid before it reaches the pits.
C. To provide a means to pump kill fluid into the annulus.
D. To measure the volume of influx entering the wellbore.
Correct Answer: A - To control the rate of fluid flow from the
well while maintaining back pressure.
RATIONALE
The choke manifold is used to regulate flow from the well and apply
back pressure to control the kick. It does not separate gas (that is the
gas buster's role), nor is it used for pumping kill fluid (that is the kill
line). It does not measure influx volume; pit level indicators do that.
Question 6
During a kick, the shut-in casing pressure is 600 psi and shut-in drill pipe
pressure is 300 psi. If the kill mud weight required is 12.5 ppg and the current
mud weight is 10.0 ppg, what is the initial circulating pressure?
A. 300 psi
B. 600 psi
Page 4
