Which of the following best describes a formation with constant permeability and no high or low streaks?

Which of the following best describes a formation with constant permeability and no high or low streaks?

• A. Isotropic
• B. Heterogeneous
• C. Homogeneous
• D. Anisotropic

Answer: (C)

A formation with constant permeability everywhere and no streaks shows uniform properties across the space, which is the essence of being homogeneous. When permeability doesn’t change from place to place, you don’t have zones with different flow characteristics, so the material behaves as a single, uniform entity. Isotropy would mean the same property in all directions, which could be true in this case, but the description’s emphasis on uniformity in space makes homogeneous the best descriptor. Heterogeneous would imply variation from place to place, and anisotropic would mean properties differ by direction, neither of which fits the scenario.

A formation with constant permeability everywhere and no streaks shows uniform properties across the space, which is the essence of being homogeneous. When permeability doesn’t change from place to place, you don’t have zones with different flow characteristics, so the material behaves as a single, uniform entity. Isotropy would mean the same property in all directions, which could be true in this case, but the description’s emphasis on uniformity in space makes homogeneous the best descriptor. Heterogeneous would imply variation from place to place, and anisotropic would mean properties differ by direction, neither of which fits the scenario.