IADC WellSharp Workover & Completion
Driller Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1.
What is the primary purpose of well control procedures during
workover operations?
A. Increase drilling speed
B. Prevent formation damage only
C. Maintain safe pressure control and prevent uncontrolled flow
D. Maximize production rates
Answer: C
Rationale: Well control procedures are designed to maintain safe
hydrostatic and mechanical control of formation pressures. In
workover operations, the risk of encountering abnormal pressure
zones or inducing a kick is significant, so preventing uncontrolled flow
(blowouts or kicks) is the primary objective.
,2.
Which fluid property is most directly responsible for providing
hydrostatic pressure?
A. Viscosity
B. Density
C. pH
D. Surface tension
Answer: B
Rationale: Hydrostatic pressure is a function of fluid density and true
vertical depth. Higher density fluids exert greater pressure at depth,
helping balance formation pressures.
3.
A kick is best defined as:
A. Loss of circulation to the formation
B. Uncontrolled influx of formation fluids into the wellbore
C. Increase in pump pressure
D. Decrease in mud weight
Answer: B
,Rationale: A kick occurs when formation pressure exceeds wellbore
pressure, allowing fluids such as gas, oil, or water to enter the
wellbore unintentionally.
4.
Which device is primarily used to seal the wellbore around tubulars
during a well control event?
A. Choke manifold
B. Blowout preventer (BOP)
C. Mud pump
D. Standpipe
Answer: B
Rationale: The BOP is designed to close and seal the wellbore, either
fully or around pipe, to control pressure during well control situations.
5.
What is the first action upon detecting a kick while drilling or working
over a well?
A. Increase pump rate
B. Shut in the well
, C. Continue circulation
D. Reduce mud weight immediately
Answer: B
Rationale: The first priority is to shut in the well to stop further influx
of formation fluids and stabilize the situation for pressure evaluation.
6.
Which indicator is most likely to suggest an influx during circulation?
A. Decrease in pit volume
B. Increase in pump pressure
C. Gain in pit volume
D. Decrease in flow rate at constant pump speed
Answer: C
Rationale: A pit gain indicates that additional fluid is entering the
system, often a sign of a kick.
7.
What is the function of a choke in well control operations?
A. Increase mud density
Driller Exam Questions With Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1.
What is the primary purpose of well control procedures during
workover operations?
A. Increase drilling speed
B. Prevent formation damage only
C. Maintain safe pressure control and prevent uncontrolled flow
D. Maximize production rates
Answer: C
Rationale: Well control procedures are designed to maintain safe
hydrostatic and mechanical control of formation pressures. In
workover operations, the risk of encountering abnormal pressure
zones or inducing a kick is significant, so preventing uncontrolled flow
(blowouts or kicks) is the primary objective.
,2.
Which fluid property is most directly responsible for providing
hydrostatic pressure?
A. Viscosity
B. Density
C. pH
D. Surface tension
Answer: B
Rationale: Hydrostatic pressure is a function of fluid density and true
vertical depth. Higher density fluids exert greater pressure at depth,
helping balance formation pressures.
3.
A kick is best defined as:
A. Loss of circulation to the formation
B. Uncontrolled influx of formation fluids into the wellbore
C. Increase in pump pressure
D. Decrease in mud weight
Answer: B
,Rationale: A kick occurs when formation pressure exceeds wellbore
pressure, allowing fluids such as gas, oil, or water to enter the
wellbore unintentionally.
4.
Which device is primarily used to seal the wellbore around tubulars
during a well control event?
A. Choke manifold
B. Blowout preventer (BOP)
C. Mud pump
D. Standpipe
Answer: B
Rationale: The BOP is designed to close and seal the wellbore, either
fully or around pipe, to control pressure during well control situations.
5.
What is the first action upon detecting a kick while drilling or working
over a well?
A. Increase pump rate
B. Shut in the well
, C. Continue circulation
D. Reduce mud weight immediately
Answer: B
Rationale: The first priority is to shut in the well to stop further influx
of formation fluids and stabilize the situation for pressure evaluation.
6.
Which indicator is most likely to suggest an influx during circulation?
A. Decrease in pit volume
B. Increase in pump pressure
C. Gain in pit volume
D. Decrease in flow rate at constant pump speed
Answer: C
Rationale: A pit gain indicates that additional fluid is entering the
system, often a sign of a kick.
7.
What is the function of a choke in well control operations?
A. Increase mud density
