Petroleum Production Operations Multiple Choice Questions on “Hydraulic Fracturing – Frac Fluids”.
1. Which of the following is correct regarding frac fluids?
a) Fluid injected into a well for simulation purpose
b) Fluid produced from a well for stimulation purpose
c) Fluid produced from a well for simulation purpose
d) Fluid injected into a well for stimulation purpose
Answer: d
Clarification: The correct statement regarding frac fluids from the above statements is that in Hydraulic fracturing fluid injected into a well for stimulation purpose. The objective of hydraulic fracturing is to increase the well productivity.
2. Which of the following is correct regarding slickwater?
a) A type of frac fluid
b) A type of packer fluid
c) A type of perforation fluid
d) A type of kill fluid
Answer: a
Clarification: Slick water is a mixture of sand, water, and several chemicals. Slickwater is injected into a well to reduce friction pressure and then to create fractures. During hydraulic fracturing fluid is injected at a high rate into a well to create a fracture.
3. Significant reductions in the conductivity of proppants occur as the closure.
a) True
b) False
Answer: a
Clarification: The statement is true. Significant reductions in the conductivity of proppants occur as the closure or horizontal stress increases. During hydraulic fracturing fluid is injected at a high speed into a well to reduce friction pressure and create a fracture.
4. Slick water frac reduces friction.
a) True
b) False
Answer: a
Clarification: The statement is true. Slick water frac reduces friction and creates a fracture. Different types of chemicals, some special type of sand along with some amount of water are mixed together to form the slick water.
5. What is the most common purpose for fracking in the U.S?
a) Mineral ores
b) Petroleum
c) Natural gas
d) Geothermal energy
Answer: c
Clarification: The most common purpose for fracking in the U.S was Natural gas. The first hydraulic fracturing job was done in the year of 1947 an that too; on a gas well for the improvement of the wells productivity.