During a DST, pressure is continuously recorded against time. The record begins as the DST tool is lowered down the borehole and ends when the tool returns to the surface. [[:file:formation-fluid-pressure-and-its-application_fig5-14.png|Figure 2]] is a DST plot, showing the various pressures recorded during the different DST periods. | During a DST, pressure is continuously recorded against time. The record begins as the DST tool is lowered down the borehole and ends when the tool returns to the surface. [[:file:formation-fluid-pressure-and-its-application_fig5-14.png|Figure 2]] is a DST plot, showing the various pressures recorded during the different DST periods. |