This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Clear Water Fluids – Practical Applications”.
1. Which of the following is a common workover fluid?
a) Diesel Oil
b) Formation salt water
c) Oil Fluid
d) Formation Hydrocarbon
View Answer
Explanation: Formation salt water is a common workover fluid. It is one of a type of Clear Water Fluids. The cost of this type of workover fluid is less. Formation salt water has a good application for the compatibility of the formation and minimizes the formation damage.
2. Gun Barrel salt water is considered as the natural water from formation.
a) True
b) False
View Answer
Explanation: The statement is true. Gun Barrel salt water is considered as the natural water from formation. But this fluid contains treating chemicals, fine particles of oil, clay, kinds of paraffin, asphaltenes or scales and therefore it may cause formation damage.
3. Seawater or Bay water is often used as workover fluids in coastal areas.
a) True
b) False
View Answer
Explanation: The statement is true. But it is not recommended. Because the Sea water or Bay water may contain fines and clays and may cause plugging and hence it may cause severe damage to the formation.
4. Which of the following parameter does not need to be considered when designing a matrix acidizing treatment?
a) Formation mineralogy
b) Formation closure stress
c) Reservoir thickness
d) Extent of damage
View Answer
Explanation: The Formation closure stress doesn’t need to be considered when designing a matrix acidizing treatment. Formation closure stress has to be considered in any type of fracturing jobs in oil and gas wells.
5. Which of the following parameters has the largest impact on pressure drop inside tubing for a high producing gas reservoir in the oil and gas upstream industry?
a) Flow rate
b) Depth of formation
c) The thickness of the reservoir
d) Temperature
View Answer
Explanation: Flow rate has the largest impact on pressure drop inside tubing for a high producing gas reservoir in the oil and gas upstream industry. If the flow rate is very high then the pressure drop inside a tubing will be huge if it is producing from a gas reservoir.
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