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→Resistivity
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| Microresistivity || colspan=2 | (See below)
| Microresistivity || colspan=2 | (See below)
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| ARI* || 8 in. || 4 ft || Estimate ''R''<sub>t</sub>, ''R''<sub>xo</sub>, and ''D''<sub>''i''</sub> in relatively salty mud, locate fractures || Resistivity range 0.2 to 100,000 Ω-m
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| Micro SFL || 2-3 in. || 1–4 in.
| Micro SFL || 2-3 in. || 1–4 in.
<sup>a</sup><sub>Shallow measurements do not work in oil-based muds.</sub><br>
<sup>a</sup><sub>Shallow measurements do not work in oil-based muds.</sub><br>
<sup>b</sup><sub>The ohm-meter (Ω-m) is a unit of measurement of resistance.</sub><br>
<sup>b</sup><sub>The ohm-meter (Ω-m) is a unit of measurement of resistance.</sub><br>
<sup>*</sup><sub>Mark of Schlumberger</sub><br>
===Induction===
===Induction===