银娱优越会

Principle of Measurement: 

A low-frequency bi-directional electric current from a source electrode on the probe returns through the formation to the cable armour above an insulated bridle. Potentials due to this current flow are measured on various sense electrodes on the probe with respect to a voltage reference ‘fish’ normally located at the surface. These measurements are converted to apparent formation resistivities within the probe and transmitted to the surface.

Features:

Digital down-hole measurement avoids errors due to cable effects 

Constant-power down-hole current source

For detailed specifications, please contact EPC!