Injection / Falloff Test Type

Injection and falloff tests are analogous to drawdown and buildup tests for injection wells. In WellTest, injection rates are denoted as negative rates.

When the test type is Injection / Falloff, imported rates are converted to negative values, and the average reservoir pressure on the Properties tab defaults to the lowest measured pressure. Wells with injection and production, such as gas storage wells, can be analyzed using either Drawdown / Buildup or Injection / Falloff test types provided the rate history is properly specified.