What is the discharge capability of ESPs with a 50 foot static head?

The discharge capability of Electric Submersible Pumps (ESPs) varies significantly based on factors such as static head, pump design, and application scenarios. For a static head of 50 feet, the correct discharge capability being indicated is 180 GPM.

This value is consistent with the performance curves and specifications typically associated with ESP systems designed for moderate static heads. At a static head of 50 feet, the ESP is optimized to deliver a higher flow rate, which in this case is represented by the 180 GPM figure. This amount of flow reflects the pump's efficiency and design characteristics aimed at achieving a balance between pressure and volume, essential for typical operations in applications like oil and gas extraction or water well pumping.

The other values presented do not align with the expected performance curves associated with ESPs at this static head; they suggest either a lower capacity than what would be efficient at 50 feet or might pertain to different operational conditions not specified in the question. Thus, the focus on 180 GPM indicates a suitable capability considering the parameters defined.