This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Reasons for Workover”.
1. What are the numbers of the minimum recommended barriers in the workover operation?
a) 5
b) 2
c) 3
d) 4
View Answer
Explanation: Two mechanical barriers are recommended in the workover operation of a well in the oil and gas industry. Workover is the process of well intervention for any kind of servicing or maintain the well to maintain or increase its productivity.
2. Bullheading used in the oil and gas industry is one of the well control methods.
a) True
b) False
View Answer
Explanation: The statement is true. Bullheading used in the oil and gas industry is one of the well control methods. In the event of H2S, fluids are pumped down forcibly into the well to prevent the toxic gases to reach to the surface.
3. What is the volume of kill fluid pumped into the well for a normal bullheading performed on a producing well?
a) The volume of the tubing +the volume from packer to the target depth
b) The volume of tubing
c) The volume of tubing + the volume below the tubing to the top of perforations
d) The volume of tubing + 50% excess
View Answer
Explanation: The volume of kill fluid can be calculated by using the formula volume of kill fluid = The volume of tubing + the volume below the tubing to the top of perforations, for the bullheading operation performed in a producing well.
4. What is the well control method generally used in the oil and gas industry?
a) Volumetric and lube and bleed
b) Diverting the well
c) Driller’s wait and weight method
d) Reverse circulation and bullhead
View Answer
Explanation: Reverse circulation and bullhead are generally used in the oil and gas industry. It is the most common well control method. In the event of H2S, fluids are pumped down forcibly into the well to prevent the toxic gases to reach to the surface.
5. To gain higher ECD, which of the following will be fruitful?
a) No circulation
b) Reverse circulation
c) Normal circulation
d) Component-based circulation
View Answer
Explanation: Reverse circulation will certainly do a favor in increasing the ECD i.e. Effective Circulating Density. The process of pumping fluids down the annulus and back up through the pipe is called the reverse circulation.
Sanfoundry Global Education & Learning Series – Petroleum Production Operations.
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