IWCF Wireline Well Intervention Exam

IWCF Wireline Well Intervention Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary purpose of wireline operations in a well?
• Drilling new wells
• Performing logging and intervention tasks
• Cementing the casing
• Installing the blowout preventer

Rationale: Wireline operations are mainly used for well logging,

perforating, and other downhole interventions.

• Which type of wireline is typically used for electric logging?
• Slickline
• Electric line (e-line)
• Braided line
• Coiled tubing 1 / 4

Rationale: Electric line carries electrical signals to and from downhole

tools for logging and measurements.

• What is the main risk associated with wireline operations in live wells?
• Mechanical failure
• Well control incidents
• Poor cement bonding
• Corrosion of casing

Rationale: Wireline operations in live wells carry a risk of

uncontrolled flow if proper well control procedures are not followed.

• Which component is critical for well control during wireline

operations?

• Swivel
• Wireline sheave
• Lubricator
• Logging tool

Rationale: The lubricator allows tools to be run into and out of the

well under pressure, maintaining well control.

• What does a lubricator allow the operator to do?
• Run tools without measuring depth
• Run tools into a pressurized well safely
• Reduce wireline tension
• Clean the wellbore 2 / 4

Rationale: Lubricators provide a pressure-containing environment for

running tools into the well.

• What is a common type of safety device used to prevent wireline from

dropping?

• Blowout preventer
• Hydraulic jar
• Mechanical stopper or brake
• Logging head

Rationale: Mechanical stoppers or brakes are used to prevent

uncontrolled descent of the tool string.

7. Slickline operations are primarily used for:

• Electric logging
• Mechanical operations such as setting plugs or valves
• Coiled tubing interventions
• Perforation

Rationale: Slickline is a single-strand wire used for mechanical tasks

without electrical signals.

• What is the primary hazard of running electric line in a well under

pressure?

• Tool malfunction
• Wireline fatigue
• Blowout or kick
• Electrical short 3 / 4

Rationale: Pressure in the well can cause uncontrolled flow during

wireline operations if well control measures are not applied.

• Which device is used to safely seal a pressurized well during wireline

operations?

• Swivel
• Wireline drum
• Logging head
• Lubricator with packing and valves

Rationale: Lubricators contain pressure and allow safe entry and

retrieval of tools.

• What is the main purpose of a wireline injector head?
• Measure depth
• Guide and control the wireline into the well
• Record electrical data
• Increase pumping rate

Rationale: The injector head provides tension control and prevents

uncontrolled movement of the line.

• Which type of kick detection is most commonly used during

wireline operations?

• Mud logging
• Gas chromatography
• Pressure monitoring at surface
• Acoustic detection
• / 4