Petroleum Production Operations Practice Test 9

1. Which of the following is correct regarding the Thickeners?

Known as gelation chemicals

Prevent a build-up of minerals in the inner wall

Used to limit the growth of microbes

Used to lower the surface tension

2. Which of the following is correct regarding Potassium Carbonate?

Prevent a build-up of minerals in the inner wall

Used to lower the surface tension

Adjusts the pH of the fluid

Used to limit the growth of microbes

3. Which of the following is correct regarding the fracture gradient?

It is the ratio of Fracture closure pressure to a depth

Pressure gradient in the fracture in excess of the fracture propagation pressure gradient

The pressure required to hold the fracture open

Pressure gradient in the fracture in less of the fracture propagation pressure gradient

4. In which of the following case, foamed acidizing is not preferred?

High permeability formation

Carbonate formation

Liquid sensitive Carbonate formation

Liquid sensitive rock

5. What is the main advantage of fracking?

Lack of environmental impact compared to other methods

Potential for economic revitalization

Provision of an alternative energy source

Cost-effectiveness as compared to other methods

6. What is the most common purpose for fracking in the U.S?

Mineral ores

Geothermal energy

Petroleum

Natural gas

7. What will be the vertical stress (without considering the pore pressures) if the average rock density if 100 lb/ft³ and depth is 5000 ft?

4000

3254

3500

5454

8. The easiest method of physically detecting any type of scale in the wellbore is to run the caliper down the wellbore.

False

True

9. Hydrogen sulfide should be generated while the reaction between the acid and the formation takes place.

True

False

10. Which of the following is correct regarding the oilfield scale Gypsum?

Form of calcium sulfate precipitate or scale

To protect casing and equipment from corroding

Used to lower the surface tension

Used to limit the growth of microbes