Figure 2. Graph of a packer injection test taken during Leg 118 showing pressure at the recorder depth vs. time. The chart shows the hydrostatic pressure, the pressure buildup from pumping water into the formation, and the subsequent pressure decay (fall-off) after pumping ceases. The rate of pressure decay indicates the relative permeability of the exposed interval (with adjustments for interval height, viscosity, etc.). The packer was moved to test different intervals in this chart.