Openhole Formation Evaluation

Gather valuable information to optimize reservoir performance

Our comprehensive portfolio of openhole wireline tools help guide your drilling, completion, stimulation, and production decisions for maximum recovery of reserves.

Detect variations in rock properties

Acoustic Logging Tools

Our acoustic logging tools provide measurements for anisotropy, permeability, fracture identification, depth/time conversion, and rock geomechanics.

Delivers accurate and advanced acoustic reservoir measurements

Compact Cross-Dipole Sonic Tool

The CXD tool combines monopole and cross-dipole sonic technology to gather data that helps improve reservoir characterization and maximize well and reservoir productivity

Compact Cross-Dipole Sonic Tool Log

Delivers accurate acoustic reservoir measurements

Compact Sonic Tool

The MSS tool measures formation compressional slowness (inverse velocity) at five long spacings with 1- and 2-ft (0.30- and 0.61-m) vertical resolution.

Compact Sonic Tool Log

Acquire representative fluid samples and precise PVT data

Fluid Testing and Sampling Tools

An advanced formation testing platform and an innovative, slim PVT sampler enable us to obtain pressures, determine fluid properties, and take samples from 3 to 14-in. hole sizes

Collects pressure, volume, and temperature fluid samples in challenging wellbores and through pipe

Compact Formation Tester Tool

The MFTD tool gathers up to three samples during a single run to determine formation pressure and gradient, permeability, and fluid-contact levels.

Compact Formation Tester Tool Log

Update your geological models with high-resolution logs

Imaging Tools

With a Compact™ microimager and oil-based imager, our geological tools deliver high-resolution data to assess faults, fractures, thin beds, dip angles, rock type, and rock quality.

Delivers high-definition, fullbore images in conductive muds

Compact Microimager Tool

The CMI tool enables enhanced reservoir characterization for more informed reservoir decisions.

Compact Microimager Log

Delivers high-definition, fullbore images in nonconductive muds

Compact Oil-Base Microimager Tool

The COI tool provides excellent borehole coverage and high-resolution imaging for detailed reservoir description and enhance decision making

Compact Oil-Base Microimager Tool Log

Characterize rock and fluid properties

Lithology and Porosity Nuclear Tools

With direct or interpreted petrophysical characterization that includes nuclear density and nuclear porosity data, we can help you to assess formation properties, bed thickness, lithologies, porosity, fluid type, as well as water and hydrocarbon saturation.

Delivers accurate compensated porosity measurements

Compact Dual Neutron Tool

The MDN tool is fully characterized for air- and mud-filled environments in both openhole and cased-hole wells.

Compact Dual Neutron Tool Log

Provides accurate lithology and depth correlation reservoir measurements with industry leading conveyance options

Compact Gamma Ray Tool

The MCG tool combines gamma ray, temperature, and CCL logs with power conversion and surface communications for all other measurements in a Compact tool string.

Compact Gamma Ray Tool Log

Delivers accurate compensated bulk density and lithology measurements

Compact Photodensity Tool

The MPD tool provides bulk density, caliper, and photoelectric (Pe) measurements that determine porosity and lithology in conventional and slim wells.

Compact Photodensity Tool Log

Provides spectral gamma ray service in vertical, high-angle, small-diameter, and horizontal wellbores

Compact Spectral Gamma Ray Tool

The CSG/SGS tools deliver logs to determine stratigraphic location, for correlation, and in the calculation of porosity and any quantity that requires clay volume.

Compact Spectral Gamma Ray Tool Log

Provides accurate porosity, fluid saturation, and pore-size distribution at multiple depths of investigation

Focused Magnetic Resonance Tool

The FMR tool offers unique acquisition sequences that both quantify and characterize rock and fluid types

Focused Magnetic Resonance Tool Log

Enables quantification of mineralogy, lithology, and organic carbon for improved saturations and reservoir characterization

Geochemical Spectroscopy Tool

The GSI tool uses a pulsed-neutron generator to quantify total organic carbon, formation sigma, and evaluation matrix density.

Geochemical Spectroscopy Instrument Log

Distinguish rock and fluid properties

Resistivity Tools

With direct or interpreted petrophysical characterization of resistivity data, our resistivity tools help you to assess formation properties, bed thickness, lithologies, porosity, fluid type, as well as water and hydrocarbon saturation.

Delivers accurate formation resistivity measurements regardless of wellbore geometry

Compact Array Induction Tool

The MAI tool acquires and records data that determines Rt in over a broad range of borehole environments.

Compact Array Induction Tool Log

Delivers accurate formation resistivity measurements regardless of wellbore geometry in conductive-mud environments

Compact Dual Laterolog Tool

The MDL tool provides accurate resistivity measurements in high-contrast conductive-mud environments.

Compact Dual Laterolog Tool Log

Determines flushed-zone resistivity in any wellbore geometry

Compact Microresistivity Tool

The MMR/MML tool provides resistivity measurements with high vertical resolution and shallow penetration.

Compact Microresistivity Tool Log

Measure well geometry

Auxiliary Tools

Our auxiliary logging tools provide measurements for well trajectory and borehole diameter logs.

Delivers precise borehole navigation

Compact Borehole Navigation Tool

The MBN tool measures the earth’s magnetic and gravitational fields along a wellbore to provide continuous inclination and azimuth data.

Compact Borehole Navigation Tool Log

Orients and centralizes tool strings to produce borehole-diameter logs

Compact Two-Arm Caliper Tool

The MTC tool orients and centralizes tool strings to produce borehole-diameter logs. It also provides powered centralization in situations where conventional centralizers cannot be used such as through-drillpipe logging.

Compact Two-Arm Caliper Tool Log

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Weatherford is here to help provide wireline tools to get the job done.