Changes

  | isbn    = 0-89181-602-X

  | isbn    = 0-89181-602-X

}}

}}

Flow of an [http://www.merriam-webster.com/dictionary/immiscible|immiscible] phase through a series of beds does not proceed uniformly but occurs preferentially through beds of higher [[permeability]] when possible. It is dependent on the capillary properties of individual beds, the proportion of higher- to lower-permeability beds, and spatial relationships of beds to the principal flow directions (bed parallel and bed perpendicular). These factors are similar to the factors reservoir engineers use to characterize reservoir heterogeneity. They are, however, more difficult to assess because of the uncertainty of the characteristics of low-permeability rocks. The knowledge base is currently undergoing rapid change.

Flow of an [http://www.merriam-webster.com/dictionary/immiscible immiscible] phase through a series of beds does not proceed uniformly but occurs preferentially through beds of higher [[permeability]] when possible. It is dependent on the capillary properties of individual beds, the proportion of higher- to lower-permeability beds, and spatial relationships of beds to the principal flow directions (bed parallel and bed perpendicular). These factors are similar to the factors reservoir engineers use to characterize reservoir heterogeneity. They are, however, more difficult to assess because of the uncertainty of the characteristics of low-permeability rocks. The knowledge base is currently undergoing rapid change.

==Bed orientation control of flow==

==Bed orientation control of flow==

| Perpendicular to the flow direction || principally controlled by the least permeable units

| Perpendicular to the flow direction || principally controlled by the least permeable units

|-

|-

| Random alignment to the flow direction || not preferentially focused

| Randomly aligned to the flow direction || not preferentially focused

|}

|}