This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Formation Damage Related to Solids”.
1. What is the maximum allowable size of solids contained in the fluid in contact with the formation?
a) 20 micron
b) 10 micron
c) 5 micron
d) 2 micron
View Answer
Explanation: The maximum allowable size of solids contained in the fluid in contact with the formation is 2 micron. So, the complete solids removal process is used for the mitigation or preventive measures for the formation damage.
2. Which of the following parameters has no effect on the IPR of a reservoir?
a) Perforation skin
b) Formation permeability
c) Production tubing diameter
d) Reservoir boundary condition
View Answer
Explanation: Production tubing diameter has no effect on the Inflow Performance Relationships of a reservoir. Tubing Performance Relationship has the effect of Production tubing diameter. The term workover is used to refer to any kind of oil well intervention involving invasive techniques, such as wireline, coiled tubing or snubbing. Specifically, it will refer to the expensive process of pulling and replacing a completion.
3. Which of the following is not a cause of sand production?
a) Running casing
b) Lowered reservoir pressure
c) Drag from produced fluids
d) Poor consolidation
View Answer
Explanation: Running Casing is not a cause of sand production. If sand is produced then it may cause severe damage to the equipment. If the formation is unconsolidated then sand may get produced.
4. Which of the following is most likely to produce sand?
a) High rate oil production in unconsolidated oil-wet sand
b) High water cut production in an oil-wet carbonate
c) High rate gas production in tight gas sand
d) During Packer Setting
View Answer
Explanation: High rate oil production in unconsolidated oil-wet sand is most likely to produce sand. unconsolidated Formation. The sediment that is loosely arranged is called Unconsolidated formation. The formation’s particles are not cemented together.
5. Which of the following requires a well intervention (workover)?
a) Determining a well’s total production flow rate
b) Shutting off flow from a high water cut interval
c) Measuring a well’s percentage of oil, gas and water production
d) The breaking emulsion formed between a well’s produced oil and water
View Answer
Explanation: Shutting off flow from a high water cut interval requires Well Intervention and need immediate measures. Workover is a well intervention process due to some problems faced. Basically, it is major maintenance or remedial treatments on an oil or gas well.
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