Chapter 5 Unusual Well Control Operations

Question 1

If wellbore pressure indicates the influx is below the bit what should you do?

Answer 1

Use Volumetric or Top Kill, Strip or Snub in

Question 2

The drill string is _______ and unable to circulate with gas influx (Kick) in the wellbore. Your only immediate option is the _________ method.

Answer 2

Plugged

Volumetric Method.

Question 3

With the __________ method, you can verify the accuracy of the SIDPP after the first circulation.

Answer 3

Driller’s Method Step #1

Question 4

What is a barite plug?

Answer 4

Barite plug act as a non-permeable barite bridge above the kicking zone by rapid settling in fresh water.

Question 5

What is a gunk plug?

Answer 5

This diesel-bentonite slurry is used to seal the wellbore as it rapidly sets up in the presence of water in the annulus.

Question 6

Several methods for locating the point of lost circulation are available including:

Answer 6

• Spinner survey,
• Temperature Survey,
• Tracer Survey,
• Hot Wire Survey,
• Pressure Transducer Survey,
• Noise/Sound Log

Question 7

The Primary well control method used with diverter operations when no choke is available to create back pressure on the well is the ?

Answer 7

Dynamic Kill Method

Question 8

While running a liner or a lower completion assembly, some of the well control options to consider include?

Answer 8

• Circulate out the kick
• Strip casing in the hole,
• Use the Volumetric method/Top kill,
• Strip out the casing and strip or snub in a kill string,
• Before running a slotted liner, conduct an extended flow check,
• Use of Hydrostatic Pressure in the wellbore is the only well control option available while running a slotted liner.