With at least two time-lapse surveys in hand, the differences in the successive images ([[:file:cross-borehole-tomography-in-development-geology_fig3.png|Figure 3]]) should relate to changes induced in the reservoir by the process, all other factors being constant. | With at least two time-lapse surveys in hand, the differences in the successive images ([[:file:cross-borehole-tomography-in-development-geology_fig3.png|Figure 3]]) should relate to changes induced in the reservoir by the process, all other factors being constant. |