Flow rate alone is not indicative of a well reaching maximum production or injection rate. In other words, high rate wells may be higher, while low rate wells may be at its maximum.  Key to reaching each wells maximum rate is to understand the mechanism dominating or influencing the flow rate.  Three properties strongly influence flow rates:  permeability, reservoir pressure, and skin factor. Permeability can be directly from core taken from the formation, a reliable porosity-permeability correlation, or a pressure transient test (e.g buildup or falloff).  Pressure can be ascertained by simply shutting in a well and measuring static fluid levels.  Skin factors are from pressure transient tests, but can be inferred from production data and fluid levels.  Work flow for testing and diagnosing wells can lead to effective investments into well stimulations, well workovers, injection pattern alignments with production wells.

I can diagnose well performance problems so that you can focus your investment on remedy to increase rate.

Permian Basin waterflood pattern example

Comparison of pattern recovery curves shows behavior that is responsive to geology and not necessarily the performance of an individual well.