Changes

===Single-rate flow tests===

===Single-rate flow tests===

A single-rate flow test is run using the following procedure. Start with the reservoir at a uniform, stabilized pressure. Then place the pressure measuring device as near the perforations as possible. Flow the well at a strictly constant rate (control with a variable choke or other control device). An alternative method for gas wells is to measure surface pressures and calculate bottomhole pressures from surface measurements. The rate at which pressure changes with time reflects the formation properties. An example of this type of test is a single-point deliverability test in a gas well (see “[[Production testing]]”).

A single-rate flow test is run using the following procedure. Start with the reservoir at a uniform, stabilized pressure. Then place the pressure measuring device as near the perforations as possible. Flow the well at a strictly constant rate (control with a variable choke or other control device). An alternative method for gas wells is to measure surface pressures and calculate bottomhole pressures from surface measurements. The rate at which pressure changes with time reflects the formation properties. An example of this type of test is a single-point deliverability test in a gas well (see [[Production testing]]).

===Pressure buildup tests===

===Pressure buildup tests===