Constant rate 

Constant Rate Production (CRP) valves are a fundamental inflow control technology designed to maintain a consistent flow rate from the reservoir, regardless of changing pressure conditions. These valves operate by introducing a calibrated restriction, ensuring uniform production along the wellbore and mitigating the dominance of high-permeability zones. By balancing inflow, CRP valves help delay water and gas breakthrough, enhancing overall recovery and extending the productive life of the well. Their passive design requires no external power or control systems, making them a reliable and cost-effective solution for a wide range of reservoir conditions. This simplicity and effectiveness have made CRP valves a key tool in optimizing production in horizontal and multilateral wells.