Petroleum Production Operations Questions and Answers – Paraffins & Asphaltenes – Design of Wax Control

This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Paraffins & Asphaltenes – Design of Wax Control”.

1. Plastic coated pipes are not advisable if down-hole paraffin deposition is predicted.
a) True
b) False
View Answer

Answer: b
Explanation: The statement is False. The corrected statement is that plastic coated pipes are advisable if down-hole paraffin deposition is predicted. Plastic coated pipes or plastic pipes are used in the petroleum industry to prevent wax or paraffin deposition and at the same to prevent corrosion. The deposition of wax in plastic or plastic coated pipes is much slower.

2. What are Wax crystal modifiers?
a) Assist in Gas production
b) Assist in the agglomeration of Wax
c) Chemicals used for paraffin treatment
d) Minimizes the water influx
View Answer

Answer: c
Explanation: Wax crystal modifiers are chemicals used for paraffin treatment. Wax crystal modifiers act at the molecular level. They reduce the oil viscosity and also lower the wax gel strength. They are effective in concentrations of parts per million which is not the case for hot oil circulations or solvent treatments.

3. The crystallization of waxes in crude oils leads to Newtonian flow characteristics.
a) True
b) False
View Answer

Answer: b
Explanation: The statement is false. The corrected statement is the crystallization of waxes in crude oils leads to non-Newtonian flow characteristics. A non-Newtonian fluid doesn’t follow the laws of a Newtonian fluid. For that particular fluid, a finite force is required to initiate the flow.
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4. What is coiled tubing used in the petroleum industry?
a) Very long metal pipe
b) Type of packer
c) Type of casing
d) A truck
View Answer

Answer: a
Explanation: Coiled tubing is used in a large scale in the current petroleum industry. It is very use full for sand washing, production, pumping or injecting any type of chemicals, gases etc down the well for production improvement purpose.

5. What is Pour point?
a) It is the pressure below which the liquid loses its flow characteristics
b) It is the temperature below which the liquid loses its flow characteristics
c) It is the temperature above which the liquid loses its flow characteristics
d) It is the pressure above which the liquid loses its flow characteristics
View Answer

Answer: b
Explanation: Pour point is the temperature used to describe the flow properties or characteristics of the fluid. Below the pour point, the fluid under consideration losses its flow characteristics. So, pour point determination calculation plays an important role.
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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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