...

The Capacitance-Resistance Model (CRM) is a class set of mathematical models relating the production rate history to the offset injection rate history with ability to account for the producers bottom-hole pressure variation.

...

CRM does not pretend to predict pressure and reserves distribution as dynamic model does.

It only provides hints for misperforming wells and sectors which need a further focus.

CRM can only be tuned for injectors with a rich history of rates variations.

CRM only works at long times and only in areas with limited drainage volume.

Technology

...

CRM trains linear correlation between variation of production rates against variation of injection rates with account of bottom-hole pressure history in producers.

...