For DST test data without appearance of radial flow, this approach is also able to provide satis factory formation parameters, so it has great value of practical application.
对于未出现径向流的DST测试资料，该方法也能提供较为满意的地层参数，具有较强的实际应用价值。
3
In formation test interpretation, plane radial flow method would result in serious deviation of permeability interpretation.