k j (rock)

Incorrect. This describes porosity, not permeability.

Correct! K J (rock) is the measure of a rock's permeability.

Incorrect. Density is a different rock property.

Incorrect. This describes the mineral composition of a rock.

Incorrect. Millimeters measure length, not permeability.

Incorrect. This measures density, not permeability.

Correct! The unit Darcy is named after Henry Darcy.

Incorrect. Kelvin measures temperature, not permeability.

Incorrect. Larger pores and more interconnected networks mean higher permeability.

Incorrect. Different minerals have varying permeability.

Correct! While temperature can affect fluid viscosity, it doesn't directly influence the rock's inherent permeability.

Incorrect. Fractures significantly increase permeability.

Incorrect. Higher permeability facilitates faster production.

Incorrect. High permeability is desirable for profitable production.

Incorrect. Permeability is a major factor in production.

Correct! Higher permeability means easier fluid extraction and faster production.

Incorrect. Permeameter is a standard method for measuring permeability.

Incorrect. Gas permeability is another common method, especially for low permeability rocks.

Correct! Seismic surveys provide information about rock layers but do not directly measure permeability.

Incorrect. Laboratory analysis is essential for determining K J (rock).

While Rock B has higher permeability, Rock A would be more suitable for oil & gas production. Here's why:

• Porosity: Rock A has significantly higher porosity than Rock B. This means Rock A can hold a larger volume of oil or gas, making it a more promising reservoir. Even though Rock B has higher permeability, its low porosity limits the amount of hydrocarbons it can store.
• Permeability and Production: While high permeability is important for fluid flow, it's not the only factor. A balanced combination of porosity and permeability is crucial for successful production. Rock A's moderate permeability is sufficient for efficient extraction, considering its high storage capacity.
• Other Factors: Other factors such as the presence of fractures, fluid saturation, and geological structure also play a role in reservoir potential. These factors need to be evaluated alongside K J (rock) and porosity.

In conclusion, while high permeability is desirable, it's not the only factor determining reservoir suitability. Rock A's higher porosity, combined with its moderate permeability, makes it a more attractive option for oil & gas production.