Petroleum Production Operations Questions and Answers – Workover to Increase Production in Wells

This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Workover to Increase Production in Wells”.

1. Personnel observes that the annulus pressure on a producing well increases from 0 psi to 300 psi. The well has the packer set to isolate annuls. What does this indicator tell you?
a) The packer is leaking
b) Temperature in the annulus increases.
c) The temperature in the annulus decreases
d) The packer is leaking and there is a rise in temperature in the annulus
View Answer

Answer: d
Explanation: If there is a drastic rise in the pressure and at the same time there is a packer then the possibilities of leakage of the packer and there is a rise in the temperature of the annulus.

2. With gas migration in a shut-in well, which one does not increase?
a) Gas bubble pressure
b) Surface pressure
c) Bottom hole pressure
d) Shut-in drill pipe pressure
View Answer

Answer: a
Explanation: Gas bubble pressure is not going to increase when the gas migrates in a well when it is shut-in. Gases have very little density at the same time they are more mobile, so they move upward.

3. Which of the following method can be used as remedial measures for plugged perforation?
a) Breaking the perforation with ball sealer
b) Use of viscous gel
c) Reaming
d) Chemical treatment
View Answer

Answer: a
Explanation: The perforation can be broken with the help of ball sealers. Ball sealers are used to plug the perforation. It is added with the treatment fluid to be used for any particular well treatment in the oil and gas industry.
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4. As long as the fluid weight is more than formation pressure, you can use solid free brine to control the well which has high permeable zones.
a) True
b) False
View Answer

Answer: b
Explanation: The statement is false. The weight is not a sole parameter to judge the well operation but at the same time, solids are also important to prevent any type of losses and to suspend the cuttings.

5. A normal annular preventer will seal pressure on the dual string completion when closed.
a) True
b) False
View Answer

Answer: b
Explanation: The statement is false. An annular preventer cannot seal the pressures coming out of dual string. There exist rubber seals on the annular preventer which will not able to seal the space between the two strings i.e. partial sealing will be there.
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Manish Bhojasia - Founder & CTO at Sanfoundry
Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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