This set of Petroleum Production Operations Multiple Choice Questions & Answers (MCQs) focuses on “Production Increase from Hydraulic Fracturing”.
1. What is Net fracture pressure?
a) Fracture propagation pressure
b) Fracture closure pressure
c) Pressure in the fracture less the fracture closure pressure
d) Pressure in the fracture in excess of the fracture closure pressure
View Answer
Explanation: Net fracture pressure is the pressure in the fracture in excess of the fracture closure pressure. The objective of hydraulic fracturing is to increase the well productivity by creating a flow path for the fluids.
2. What is fracture propagation pressure?
a) Fracture closure pressure
b) As the fracture extended the pressure in the fracture
c) Pressure in the fracture less the fracture closure pressure
d) Pressure in the fracture in excess of the fracture closure pressure
View Answer
Explanation: The fracture propagation pressure is the pressure in the fracture at the wellbore as the fracture extends. And fracture propagation pressure increases due to the fluid friction as the fracture grows towards the tip.
3. What is the main advantage of fracking?
a) Potential for economic revitalization
b) Cost-effectiveness as compared to other methods
c) Provision of an alternative energy source
d) Lack of environmental impact compared to other methods
View Answer
Explanation: The main advantage of fracking is the provision of an alternative energy source. The Hydraulic fracturing job was invented in the year 1947. Then after this technology is used significantly.
4. What is fracture closure pressure?
a) Net fracture pressure
b) Pressure required to hold the fracture open
c) Pressure in the fracture less the fracture propagation pressure
d) Pressure in the fracture in excess of the fracture propagation pressure
View Answer
Explanation: Fracture closure pressure is the pressure required to hold the fracture open. The objective of hydraulic fracturing is to increase the well productivity. In horizontal wells, the vertical fractures are created and proppants are placed there to remain the frac opened.
5. Which of the following is correct regarding the fracture gradient?
a) It is the ratio of Fracture closure pressure to a depth
b) Pressure gradient in the fracture in excess of the fracture propagation pressure gradient
c) Pressure gradient in the fracture in less of the fracture propagation pressure gradient
d) The pressure required to hold the fracture open
View Answer
Explanation: The correct statement regarding the fracture gradient is that it is the ratio of Fracture closure pressure to depth. Fracture closure pressure is the pressure required to hold the fracture open.
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