Logging While Drilling (LWD) Formation Evaluation | SLB

Logging-while-drilling services

Acquire high-quality data while drilling

Two Schlumberger technicians configuring an LWD tool on a drilling pad at night
Two Schlumberger technicians configuring an LWD tool on a drilling pad at night

Fast, high-quality data for accurate geosteering and formation evaluation

Increase ROP, improve wellbore stability and hole quality, and optimize well placement and reservoir exposure for maximum production—faster.

As the industry leaders in logging-while-drilling (LWD) technology, SLB creates advanced LWD services that acquire high-quality data for accurate geosteering and more-informed formation evaluation, so you can work proactively as you drill.

Two drilling technicians in the doghouse of a rig during daylight operations

Geosteering and Reservoir Mapping While Drilling

Large-scale mapping of reservoir geometry, quality, and productivity

Reveal multiple formation boundary layers and fluid contacts
Optimize well landing and increase reservoir exposure

  • Screenshot showing a colorful image of the multilayer mapping-while-drilling service trajectory
    PeriScope Edge
    Multilayer mapping-while-drilling service

    Achieve the highest confidence for precision steering decisions in razor-thin reservoirs. View link button arrow

  • Test tubes holding different weights of oil, arranged from darkest to lightest.
    SpectraSphere
    Fluid mapping-while-drilling service

    Map reservoir fluid composition and distribution to maximize reservoir exposure. View link button arrow

  • Petrel rendering that combines well path details and 3D reservoir data as collected by the GeoSphere service
    GeoSphere HD
    High-definition reservoir mapping-while drilling service

    Map a depth of investigation that exceeds 250 ft—the largest in the industry—and covers the widest range of environment. View link button arrow

  • IriSphere service multifrequency transmitters and multireceiver BHA
    IriSphere
    Look-ahead-while-drilling service

    Improve casing-point selection and reduce drilling risks with continuous resistivity ahead of the bit. View link button arrow

Reservoir Engineering While Drilling

Formation pressure and fluids

Measure formation pressure for accurate formation evaluation, geosteering, and pore pressure prediction models
Identify pressure-depleted formations to avoid lost time and help preserve pressure zones

  • Close up of the StethoScope formation pressure-while-drilling service tool
    StethoScope
    Formation pressure-while-drilling service

    Monitor formation pressure while drilling to calibrate pore pressure models. View link button arrow

  • Test tubes holding different weights of oil, arranged from darkest to lightest.
    SpectraSphere
    Fluid mapping-while-drilling service

    Map reservoir fluid composition and distribution to maximize reservoir exposure. View link button arrow

Petrophysics and Geology While Drilling

Lithology, porosity, saturation, permeability, structure, and stratigraphy

Evaluate lithology, porosity, saturation, and permeability
Perform quantitative reservoir evaluation with measurements of petrophysical properties
Gather comprehensive datasets for formation evaluation, drilling optimization, and well placement
Identify dipping beds, faults, and fractures

  • MagniSphere High-Definition NMR Logging-While-Drilling Service
    MagniSphere
    High-definition NMR logging-while-drilling service

    Acquire sourceless, real-time NMR data for accurate and precise reservoir fluid evaluation while slimhole drilling. View link button arrow

  • A land rig in the distance, across a sandy landscape
    OmniSphere
    Slimhole petrophysics evaluation-while-drilling service

    Get real-time insight into the mineral composition of formations and continuous-circulation directional survey service and pumps-off surveying. View link button arrow

  • A Schlumberger technician taking inventory of the various LWD tools available for use at a rigsite
    EcoScope
    Multifunction logging-while-drilling service

    Obtain resistivity, neutron porosity, azimuthal gamma ray, density, elemental capture spectroscopy, and sigma measurements and borehole imaging—all in one collar. View link button arrow

  • A Schlumberger technician uses a connected computer to perform final checks on a NeoScope sourceless formation evaluation-while-drilling-service tool
    NeoScope
    Sourceless formation evaluation-while-drilling service

    Reduce risk and logistical demands by eliminating the need for chemical sources to acquire multifunction LWD data. View link button arrow

  • Technicians in Indonesia make adjustments to an adnVISION Azimuthal Density Neutron Service tool
    adnVISION
    Azimuthal density neutron service

    Characterize formation porosity and lithology while drilling with azimuthal density measurements (ADN). View link button arrow

  • A Schlumberger technician attaching a cover to a sensor on an arcVISION array resistivity compensated service tool
    arcVISION
    Array resistivity compensated service

    Benefit from real-time resistivity, gamma ray, inclination, and annular pressure data. View link button arrow

  • A log from the proVISION Plus Magnetic resonance-while-drilling service showing T2, fluid volumes, facies analysis, and permeability tracks
    proVISION Plus
    Magnetic resonance-while-drilling service

    Achieve accurate lithology-independent porosity and continuous permeability in real time. View link button arrow

  • Composite image of the sonicSCOPE system and sample data logs that it generates
    SonicScope
    Multipole sonic-while-drilling service

    Realize the benefits of real-time multipole sonic data for advanced risk mitigation, cement evaluation, formation evaluation, and completion design. View link button arrow

  • operator working down-hole with TerraShpere
    TerraSphere
    High-definition dual-imaging-while-drilling service

    Provides complete reservoir geological description in oil-based mud environments. View link button arrow

  • MicroScope HD Resistivity and High-Definition Imaging-While-Drilling Service
    MicroScope HD
    Resistivity- and high-definition imaging-while-drilling service

    Get high-resolution LWD imaging for structural analysis, sedimentology, and fracture characterization. View link button arrow

  • Samples of density and caliper logs from the imaging density neutron standoff caliper tool
    Neutron Density Imaging Service
    Azimuthal images of bulk density and caliper

    Get azimuthal images of bulk density and caliper, along with conventional bulk density, neutron porosity, photoelectric index, caliper, and tool standoff. View link button arrow

Geophysics While Drilling

Seismic imaging and correlation

Measure one-way seismic propagation in real time
Calibrate the geophysics velocity model without rig downtime
Adjust trajectory, casing, and coring depth and predict depth of drilling targets

  • Illustration of a BHA using the seismicVISION service moving through layers of data
    seismicVISION
    Seismic-while-drilling service

    Acquire borehole seismic measurements for real-time, time-depth-velocity information without disrupting drilling operations. View link button arrow

Geomechanics While Drilling

Rock mechanics and wellbore stability

Measure geomechanics in exploration, appraisal, and development drilling operations
Mitigate wellbore risk and perform quantitative cement and formation evaluation
Place casing points, understand mud-weight management, and identify the top of cement

  • Composite image of the sonicSCOPE system and sample data logs that it generates
    SonicScope
    Multipole sonic-while-drilling service

    Realize the benefits of real-time multipole sonic data for advanced risk mitigation, cement evaluation, formation evaluation, and completion design. View link button arrow