Question

Within these reservoirs, fluids will typically organize themselves like a three-layer cake. What is this layering?

a) Water, oil, and gas
b) Tar, asphalt, and natural gas
c) Crude oil, kerogen, and shale
d) Salt, brine, and petroleum

Answer 1

Fluids in oil and gas reservoirs typically arrange themselves in layers of water, oil, and natural gas due to differences in density, forming a 'three-layer cake' which is important for extraction.

Step-by-step explanation:

When we discuss the organization of fluids in oil and gas reservoirs, they tend to separate into different layers due to their densities, forming a sort of 'three-layer cake'. These layers are typically water, oil, and gas. This layering is critical in the extraction of these resources. As companies drill down through various geological layers such as sand, silt, and rock, they aim to reach rock formations containing oil and gas deposits. The separation occurs naturally due to the fact that oil is a non-polar liquid and does not mix with water, while natural gas, which is less dense than both oil and water, forms the uppermost layer.