Petroleum Production Operations Multiple Choice Questions on “Sand Control – Reduction of Drag Forces”.
1. Decreasing the flow area is one of the good methods for sand control.
a) True
b) False
Answer: b
Clarification: The statement is false. The corrected statement is increasing the flow area is one of the good methods for sand control. So, careful selection of the perforating charges and perforating conditions is to be done for no sand production.
2. What is the practical limit of sand production in the U.S Gulf coast?
a) 1%
b) 3%
c) 0.1%
d) 4%
Answer: c
Clarification: The practical limit of the sand production in the U.S Gulf coast is 0.1% as measured in a shake-out graduate. In coarse formation sand areas e.g. Nigeria the limits are way lower than this.
3. Out of the different wells, how can we assure which well is producing sand?
a) Flow line probe
b) Packer
c) Tracker
d) Production tubing
Answer: c
Clarification: We can assure from the well from which the sand is being produced by using a flow line probe or erosion tube. A flow line probe or erosion tube is also used to shutting the well before the surface facilities are destroyed.
4. All solids smaller than 90 percentile formation sand are probably interstitial fines.
a) True
b) False
Answer: a
Clarification: The statement is true. All solids smaller than 90 percentile formation sand are probably interstitial fines. In the petroleum industry, we mean controlling of load-bearing solids when we talk about sand control.
5. Which of the following represents load bearing solids?
a) Produced solids between 35 and90 percentile
b) Produced solids between 25 and50 percentile
c) Produced solids between 95 and50 percentile
d) Produced solids between 75 and50 percentile
Answer: d
Clarification: Produced solids between the 75 and50 percentile range certainly represents load bearing solids. All solids smaller than 90 percentile formation sand are probably interstitial fines. Sand control means the controlling of the load bearing solids.