1. n. [Well Completions]

A term used to describe the flow pattern where two or more fluid phases may be present in a relatively even distribution. The flow rate and conduit geometry may cause an apparent mixing of the phases. However, if the flow characteristics are changed through flow rate or conduit geometry, fluid separation may occur. Fine solids also may be entrained in a commingled flow. Commingled flow may also describe the production of fluid from two or more separate zones through a single conduit.

See related terms: well flow rate