Petroleum Production Operations Mock Test 7

10%

Question 1 of 10

1. How does reduced relative permeability to oil result in the formation damage mechanism?

Results from plugging of pore channels by induced or inherent particles

Results due to a decrease in gas saturation

Results from an increase in water saturation or oil wetting of the rock

Results due to a decrease in water saturation

Question 1 of 10

Question 2 of 10

2. What is Surface Tension?

The tendency of the surface of the fluid to expand into the maximum surface area possible

The tendency of fluid surfaces to shrink into the maximum surface area possible

The tendency of the surface of the fluid to shrink into the minimum surface area possible

The tendency of fluid surfaces to expand

Question 2 of 10

Question 3 of 10

3. If the uniformity coefficient is greater than 10 then what does it signifies?

Sand is non-uniform and is described by D₄₀ size

Sand is very non- uniform and is described by D₇₀ size

Sand is uniform and is described by D₁₀ size

Sand is uniform and is described by D₄₀ size

Question 3 of 10

Question 4 of 10

4. What is the use of Expandable sand-screen systems in the oil and gas upstream industry?

Packer disintegration

Oil control

Gas control

Sand control

Question 4 of 10

Question 5 of 10

5. Contact with the foreign fluid is the basis cause of formation damage.

False

True

Question 5 of 10

Question 6 of 10

6. What is the pressure range within which gravel pack is generally be used?

3300- 4500 psi

>1000 psi

2500-3300 psi

<1000 psi

Question 6 of 10

Question 7 of 10

7. Viscosity builders have to be used in a huge amount in gravel packing.

False

True

Question 7 of 10

Question 8 of 10

8. What is absolute permeability?

It is the ability to flow fluid through the porous media of permeable rock when only one type of fluid is in the rock pore spaces

It is the ability to flow fluid through the porous media of permeable rock when more than one type of fluid is in the rock pore spaces

It is the ratio of effective permeability over the absolute permeability

It is the ratio of absolute permeability over the effective permeability

Question 8 of 10

Question 9 of 10

9. Which of the following is correct in the context of gravel - sand size ratio when the uniformity coefficient is greater than 5; consider flow velocity is less than 0.05 ft/sec?

D₄₀ gravel = 6 times 40 sand size

D₁₀ gravel = 8 times D₄₀ sand size

D₄₀ gravel = 8 times D₄₀ sand size

D₁₀ gravel = 7 times D₁₀ sand size

Question 9 of 10

Question 10 of 10

10. What is gravel-sand size Ratio according to Maly?

40 percentile gravel/ 40 percentile sand

Smallest gravel size/10 percentile sand size

Largest gravel size/10 percentile sand size

50 percentile gravel/ 50 percentile sand

Question 10 of 10