Nodal analysis is performed for natural flow and artificial lift wells. State of the art tools are used to perform nodal analysis. Current performance analysis is performed by using any well and reservoir information. An extensive industry experience is used to establish range of missing input parameters. Sensitivity analysis are also performed to understand opportunities of well optimization and changing field operating conditions. A detailed report out including necessary plots and annotations are also provided at end of analysis. Vertical lift performance curves are also generated to be used in other tools like simulation studies.