Resistivity Logging

Resistivity tools for any environment

The quest to measure true formation resistivity (Rt) has challenged petrophysicts for decades. Our portfolio of array resistivity logging services takes the guesswork out of your interpretations. They provide a value of Rt that is closer than ever to the true Rt of the formation. Array resistivity tools offer answers at multiple depths of investigation, removing undesired effects and aiding in understanding, visualizing, and even quantifying the invasion process.

Resistivity Logging

A technology for every environment

We offer two complementary array type technologies: induction and laterolog. Array induction tools are very accurate when formation resistivity is medium to low, and borehole salinity is not too high. Array laterolog tools are more accurate in conditions where accuracy of the array induction tool starts to degrade. We offer multiple services to cover both technology types with varying environmental specifications. Temperatures up to 500°F and hydrostatic pressures up to 30,000 psi aren’t limiting factors for our portfolio.

Resistivity measurements are a regular part of nearly every openhole logging evaluation:


  • Evaluate the producibility of a formation
  • Indicate the presence of movable hydrocarbons
  • Determine the true resistivity of the formation and depth of invasion
  • Indicate permeability
  • Determine hydrocarbon saturation
ACRt™ Array Compensated Resistivity Tool Family
The ACRt™ array compensated resistivity tool system represents the latest thinking in conventional array induction technology
High-Frequency Dielectric Tool (HFDT™) Tool
The HFDT-I (High Frequency Dielectric tool) is a pad type tool intended to provide the porosity filled with water in the near borehole region of the formation as well as its salinity.
Hostile Array Compensated True Resistivity (H-ACRt™) Tool
Rated to 500°F and 30,000 PSI. Wireline induction tool that consists of a single transmitter operating at three frequencies and six receiver antennas with spacing from 6 to 80 inches. It gives resistivity values at 5 different depths of investigation and with the same vertical resolution (either 1, 2, 4 ft).
Xaminer® Multicomponent Induction (MCI) Tool
Our Xaminer® Multicomponent Induction (MCI) tool evaluates anisotropic formations by measuring the formation resistivity both vertically and horizontally at different depths of investigation. When run with a directional instrument, the tool provides structural dip and azimuth.
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