tech schlumberger charts 10 rxo 5 9-5-11.p3
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Electromagnetic Propagation and MicroresistivitySchlumberger
5-11
Rxo
MicroSFL* Mudcake CorrectionRxo-3
Example: RMLL = 9.0 ohm-mRmc = 0.15 ohm-m at formation temperaturehmc = 9.5 mm
giving RMLL/Rmc = 9.0/0.15 = 60Therefore, RMLLcor/RMLL = 2and RMLLcor = 2(9.0) = 18 ohm-m
RMSFL/Rmc
RM
SFLc
or/R
MSF
L
Standard MicroSFLMSFL version III mudcake correction, 8-in. borehole
1 2 5 10 20 50 100
3.0
2.5
2.0
1.5
1.00.90.80.70.6
1 in. [25.4 mm]
34 in. [19 mm]
14 in. [6.4 mm]
18 in. [3.2 mm]
12 in. [12.7 mm]
hmc
0 in.
RM
SFLc
or/R
MSF
L
RMSFL/Rmc
Slimhole MicroSFLSlim MSFL mudcake correction, 8-in. borehole
1 2 5 10 20 50 100
3.0
2.5
2.0
1.5
1.00.90.80.70.6
1 in. [25.4 mm] 34 in. [19 mm]
12 in. [12.7 mm]14 in. [6.4 mm]
0 18 in. [0 3.2 mm]
hmc
*Mark of Schlumberger Schlumberger