This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Acid Additives”.
1. Surfactants should be used on all acid jobs to reduce surface tension.
a) True
b) False
View Answer
Explanation: The statement is true. Surfactants should be used on all acid jobs to reduce the surface or interfacial tension. Acid stimulation is the treatment of a reservoir formation with fluid containing acid.
2. What are suspending agents?
a) Used to eliminate acid sludge
b) A solid substance can be held in suspension
c) A chemical additive used to protect iron and steel
d) A chemical additive used to protect plastic pipes
View Answer
Explanation: Suspending agents are used in the oil and gas industry are the substances using which the solid substances can be held in suspension. It is widely used in carbonate formations which can reduce the cleanup time after acidizing.
3. What are the anti-sludge agents?
a) Used to eliminate acid sludge
b) A solid substance can be held in suspension
c) A chemical additive used to protect iron and steel
d) A chemical additive used to protect plastic pipes
View Answer
Explanation: Anti sludge agents are highly used as acid additives for the well treatments in the petroleum industry. It is extensively used in oil and gas wells in the presence of Hydrochloric or hydrofluoric acid to eliminate any type of acid sludge.
4. What are corrosion inhibitors?
a) Used to eliminate acid sludge
b) A solid substance can be held in suspension
c) A chemical additive used to protect iron and steel
d) A chemical additive used to protect plastic pipes
View Answer
Explanation: Corrosion inhibitors are Chemical additive used to protect iron and steel from being corroded. Corrosion inhibitors are generally mixed with the treating fluid used in the well treatment.
5. Methyl alcohol may be added to the acid during acidizing to reduce the surface tension.
a) True
b) False
View Answer
Explanation: The statement is true. Methyl alcohol in concentrations in the percentage of 5 to 30 can be mixed with acids to lower the surface tension. Isopropyl alcohol can also be used for this purpose.
Sanfoundry Global Education & Learning Series – Petroleum Production Operations.
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