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...on-of-water-resistivity_fig1.png|{{figure number|1}}Example of a normal SP deflection. Copyright: Schlumberger Educational Services, 1987. ...n-of-water-resistivity_fig2.png|{{figure number|2}}Example of a reverse SP deflection.<ref name=pt04r3>Dewan, J. T., 1983, Essentials of modern open-hole log int

...sadvantage of steerable systems is that they are more expensive than other deflection systems.

...in more of the negative values. Another factor is the choice of the trace deflection or excursion. A 2.5 excursion allows the maximum amplitude of the trace to

...e change and a resulting concentration of gas. The current is displayed by deflection on a milliammeter or may be used to scale the meter or recorder in terms of

...s less competent ) and plans anisotropy generated in the shales facilitate deflection of the levees that are rising from lower levels (Fig 6).

...te and formation waters approach a common resistivity. The direction of SP deflection reverses as the ratio of the resistivity of the mud filtrate (''R''<sub>mf<

...ttening. The user selects points on the raw SP curve, which represent zero deflection (that is, baseline = 100% shale). By projecting the baseline between two co

...e Hawaiian Islands chain of volcanic edifices has sufficient mass to cause deflection in the lithosphere.

...es around a sand-shale contact deflect the SP from the shale baseline. The deflection is negative for a normal salinity contrast (borehole fresher than formation