This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Formation Damage – Asphaltene Plugging”.
1. Temperature reduction causes Asphaltene plugging.
a) True
b) False
View Answer
Explanation: The statement is true. Temperature reduction causes Asphaltene plugging. When the crude moves up from down then this experiences a reduction of temperature and hence Asphaltene deposition may take place.
2. How can the asphaltene deposition reduce permeability?
a) Causing the formation to become gas wet
b) Causing the formation to become water wet
c) Causing the formation to become oil wet
d) Causing the formation to become non- wet
View Answer
Explanation: The asphaltene deposition reduces permeability causing the formation to become oil wet. It can also decrease the permeability by plugging the pore spaces making it difficult for the fluid flow.
3. Oil wetting can result from surface active materials used in treating fluid.
a) True
b) False
View Answer
Explanation: The statement is true. Oil wetting can result from surface active materials used in treating fluid. The treating fluid may be drilling fluid or workover fluid or other treating fluids used in oil and gas well.
4. Which of the following is correct in the context Surfactant used in the oil and gas industry?
a) Increases the surface or interfacial tension
b) Reduces the surface or interfacial tension
c) Increases the surface and reduces the interfacial tension
d) Reduces the surface and increases interfacial tension
View Answer
Explanation: The correct statement is Surfactant used in the oil and gas industry reduces the surface or interfacial tension. The Surfactant should be selected on the basis of laboratory experiments.
5. What is Surface Tension?
a) The tendency of the surface of the fluid to expand into the maximum surface area possible
b) The tendency of the surface of the fluid to shrink into the minimum surface area possible
c) The tendency of fluid surfaces to expand
d) The tendency of fluid surfaces to shrink into the maximum surface area possible
View Answer
Explanation: The correct statement among the above-mentioned statements is that the surface tension is the natural phenomenon of a fluid under consideration due to which the free surface of the fluid tends to attain the minimum surface area as far as possible.
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