The actual pressure distribution differs in most cases from the ideal pressure distribution derived for the ideal model. The following additional pressure drop at the wellbore results from near wellbore phenomena ([[:file:fundamentals-of-fluid-flow_fig5.png|Figure 5]]): | The actual pressure distribution differs in most cases from the ideal pressure distribution derived for the ideal model. The following additional pressure drop at the wellbore results from near wellbore phenomena ([[:file:fundamentals-of-fluid-flow_fig5.png|Figure 5]]): |