This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Increasing Effectiveness of Rod Pumping”.
1. The production rate increases when the viscosity of the fluid _____
a) Increases
b) Decreases
c) Remains constant
d) 100 cp
View Answer
Explanation: The production rate increases when the viscosity of the fluid decreases. The unit of viscosity is centipoise (cp) that is used generally in the oil field. It can be reduced to a larger extent e.g from 30000 cp to 5 cp.
2. Viscosity reduction eliminates the problem of rod drop in pumping wells.
a) True
b) False
View Answer
Explanation: The statement is true. Viscosity reduction eliminates the problem of rod drop in pumping wells. The unit of viscosity is centipoise (cp) which is used generally in the oil field. The production rate is inversely proportional to the viscosity.
3. What is the surface tension of 15% HCl?
a) 172 dynes/cm
b) 712 dynes/cm
c) 172 dynes/cm
d) 72 dynes/cm
View Answer
Explanation: The surface tension of 15% HCl is 72 dynes/cm. 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.
4. The surface tension of 15% HCl can be reduced to 22 dynes/cm.
a) True
b) False
View Answer
Explanation: The statement is true. The surface tension of 15% HCl can be reduced to 22 dynes/cm. 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.
5. Which of the following is incorrect regarding surfactant?
a) Clean up time can be reduced by using the surfactants in oil wells
b) Clean up time can be reduced by using the surfactants in oil wells
c) Clean up time can be increased by using the surfactants in service wells
d) Surfactant reduces the surface tension
View Answer
Explanation: The incorrect statement is “clean up time can be increased by using the surfactants in service wells”. The corrected statement is Clean up time can be reduced by using the surfactants in oil and wells and also in service wells.
Sanfoundry Global Education & Learning Series – Petroleum Production Operations.
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