Well Control - Quiz - Quiz & Trivia

1. What is the definition of a barrier?

The warning tape around the work site

Anything that prevents the flow of wellbore fluids

An overbalanced fluid

BOP locking stems

Barriers prevent flow from the wellbore.

Explanation

Barriers prevent flow from the wellbore.

2. Which are common fluid barriers (3 answers):

Seawater

Diesel

Brine

Nitrogen

Condensate

Drilling mud

Seawater, Brine and Drilling are the most common

Explanation

Seawater, Brine and Drilling are the most common

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3. Which depth is used to calculate volumes?

TVD

MD

TVD - True Vertical Depth is used to calculate pressure, kill mud weight and Depth. MD - Used for volumes and strokes.

Explanation

TVD - True Vertical Depth is used to calculate pressure, kill mud weight and Depth. MD - Used for volumes and strokes.

4. During an intervention operation it becomes necessary to kill the well. Which is the most important appropriate kill method?

Volumetric

Forward circulation

Wait and Weight

Bullheading

Concurrent

Bullheading is the best method for intervention operation.

Explanation

Bullheading is the best method for intervention operation.

5. A subsea rig has shut in the well on a kick. The choke line is filled with drill water. Well Data: Choke line length 4200 feet Weight of drill water 8.3 ppg Mud weight 12.3 ppg SICP 1430 psi Before starting the kill operation the choke line is displaced to 12.3 ppg mud. What will be the new SICP?

1020 psi

922 psi

556 psi

432 psi

SICP = (12.3 - 8.3) * 0.052 * 4200 = 873 psi # SICP = 1430 - 873.6 = 556.4 psi

Explanation

SICP = (12.3 - 8.3) * 0.052 * 4200 = 873 psi # SICP = 1430 - 873.6 = 556.4 psi

6. Which of the following describes the types of barriers?

Positive and negative

Pump on and pump closed

Mechanical and fluid

Overbalanced and underbalanced

Primary and secondary

Upper and lower

The correct answer is "Mechanical and fluid." This answer describes the types of barriers that can exist. Mechanical barriers refer to physical obstacles that prevent the movement or flow of substances, while fluid barriers involve the use of fluids to block or control the flow of substances. This answer accurately identifies the two different types of barriers.

Explanation

The correct answer is "Mechanical and fluid." This answer describes the types of barriers that can exist. Mechanical barriers refer to physical obstacles that prevent the movement or flow of substances, while fluid barriers involve the use of fluids to block or control the flow of substances. This answer accurately identifies the two different types of barriers.

7. A kick has been swabbed in while tripping. Which of the following is an indication that the influx is below the bit and that stripping to bottom will be required?

The SIDPP is higher than SICP

The SIDPP is lower than SICP

The SIDPP is equal to SICP

None of the above

Same fluid, same Hydrostatic Pressure, same reading

Explanation

Same fluid, same Hydrostatic Pressure, same reading

8. Under which circumstance would the Wait and Weight Method provide lower equivalent pressures at the casing shoe than the Driller's Method?

The pressures at the casing are the same regardless of the kill method used

When the drill string volume is more than annulus open hole volume

When annulus open hole volume is less than the drill string volume

When the drill string volume is less than the open hole volume

Lower volume inside Drill String means lower Equivalent Pressures

Explanation

Lower volume inside Drill String means lower Equivalent Pressures

9. What is a reason for measuring Choke Line Friction (CLF) pressure?

To determine how much to allow casing pressure to increase at the start of a kill operation

To determine how much to allow drill pipe pressure to increase at the start of a kill operation

To determine if the choke and kill lines should be used during the kill operation

To help determine possible pressure increase during the final stages of a well kill

CLF is important to check increase pressure during the final stages of a well kill

Explanation

CLF is important to check increase pressure during the final stages of a well kill

10. Why is it necessary to select the correct kill fluid? (2 answers)

Enable a lower kill pump rate

To minimize Formation Pressure

To enable a higher kill pump rate

To ensure formation fluid compatibility

To reduce annulus losses

The correct answer is to enable a lower kill pump rate and to ensure formation fluid compatibility. Selecting the correct kill fluid allows for a lower kill pump rate, which can be beneficial in controlling the pressure and preventing any damage to the formation. Additionally, using the right kill fluid ensures compatibility with the formation fluid, minimizing any potential reactions or complications that could arise during the killing process.

Explanation

The correct answer is to enable a lower kill pump rate and to ensure formation fluid compatibility. Selecting the correct kill fluid allows for a lower kill pump rate, which can be beneficial in controlling the pressure and preventing any damage to the formation. Additionally, using the right kill fluid ensures compatibility with the formation fluid, minimizing any potential reactions or complications that could arise during the killing process.

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