Resistivities of Mud (Rm), Mudcake (Rmc) and Mud Filtrate (Rmf)?

[yasiobasio123]

Hi Friends,

If we don't have the Log Header, how can we find Resistivities of Mud (Rm), Mudcake (Rmc) and Mud Filtrate (Rmf)?

Thanks..

[Land_Mark]

Hi,

See Schlumberger Log Interpretation Charts. You must at least have mud weight in ppg and mud resistivity in ohm-m.

If you don't have Rm, you could probably look at the Rm's for the equivalent log section in surrounding wells.

Markus