ThruBit

Through-the-bit logging services

Overview

Comprehensive logging in complex well environments

ThruBit™ through-the-bit logging services offer a comprehensive wireline suite built for performance in complex and unstable well environments. This unique conveyance platform provides a set of slim-profile (2 1/8-in) formation evaluation tools designed for advanced lateral measurements in all types of difficult-to-access wells.

No longer are operators limited to time-consuming specialty conveyance equipment—or skipping logging altogether. A logging string with any number of ThruBit services measurement tools can be conveyed through the drillstring and the Portal™ pass-through bit to log the open borehole on wireline or as the drillpipe is tripped out of the hole. With ThruBit services, you get a much more complete lateral understanding of drilling challenges, to help eliminate uncertainties during fracturing and stimulation operations and fully optimize your stimulation plan.

ThruBit Logging Services

How can you improve your completions and stimulation design? Lateral measurements with through-the-bit logging.

Applications

Petrophysics

Improved porosity estimation
Saturation evaluation
High-definition lithology and total organic carbon (TOC) measurements
Gas identification
Permeability and mobility

Geology

High-resolution fracture and bedding characterization
Structure and sedimentology interpretation
Formation imaging in both oil- and water-based mud
Net-to-gross estimation

Acoustics and geomechanics

Stress regime, anisotropy, and pore pressure evaluation
Deep 3D fracture characterization
Well placement and stability evaluation
Stimulation design and optimized hydraulic fracturing
Guidance for selective perforating and sand control

Geophysics

Velocity calibration and time-depth conversion
Improved 3D seismic analysis and seismic tie-ins
Synthetic seismograms

Benefits

Minimizes operational risk

Drillers maintain complete drillstring control with easy tool retrievability—even in stuck-pipe situations—to facilitate and derisk fishing and pipe-freeing operations.

Improves lateral insights

A wide range of advanced through-the-bit logging tools provide advanced lateral measurements to help eliminate assumptions during fracturing and stimulation.

Maximizes production

Lateral measurements help improve your understanding of subsurface conditions to get the greatest potential production from your assets.

Increases stimulation efficiency

The ultraslim platform works well in slim holes and extremely rugose, deviated, or horizontal wells to provide the most accurate available inputs to your stimulation plan.

Features

Slim, multiconveyance logging portfolio

ThruBit services formation evaluation tools provide a complete suite of logging measurements for better insights in the most challenging environments. Packaged to fit a slim 2 1/8-in profile, these rugged, through-the-bit tools can deliver measurements ranging from the classic triple-combo suites to advanced offerings such as high-resolution laterolog, spectral gamma ray, dipole sonic, borehole imaging, and multifunction spectroscopy.

ThruBit Services	Description
ThruBit services triple-combo	Neutron, density, and array induction resistivity combined with the telemetry, memory, and gamma ray device available with all ThruBit services tools gives you extensive data for your stimulation plan.
ThruBit HRLA™ high-resolution laterolog array tool	Measurement by focused arrays at multiple depths enables determining and correcting for environment effects, such as shoulder beds, and calculating uninvaded formation resistivity.
ThruBit services spectral gamma ray tool	Measurement of the total gamma ray spectra enables detection of potassium, thorium, and uranium, which are common in sands and shales.
ThruBit Dipole™ through-the-bit acoustic service	Both monopole and cross-dipole waveforms and Stoneley waves help determine whether the formation is isotropic or anisotropic—critical information for designing well paths, completions, and fracturing stages.
ThruBit services imagers	Designed for use with OBM or WBM, imaging and dip data covers 80% of the borehole in 6-in holes with .2-in image resolution for high-resolution structural, stratigraphic, and geomechanical understanding.
ThruBit services multifunction spectroscopy	Multiple detectors paired with a high-output pulsed neutron generator provide cased-hole formation evaluation and reservoir saturation monitoring data—all in a single tool.

How It Works

Logging beyond gravitational descent

Eliminate additional trips and save rig time by deploying the toolstring and logging during hole conditioning.

The Portal bit is used to ream to TD to prepare the borehole for logging.
The driller pulls the bit off bottom to provide room for the logging toolstring, which is pumped through the drillpipe.
The toolstring is pushed through the Portal bit opening into the open borehole, where functionality is verified, and then the wireline is disconnected and removed from the drillpipe.
Logging in memory mode occurs as the pipe is tripped out of the hole.
Once logging is complete, the Portal bit at the end of the drillpipe and toolstring are pulled up into the casing.
A retrieval tool is lowered on wireline to latch onto the toolstring and return it to surface.
With the logging toolstring recovered from the drillpipe, drilling or other operations can resume while the logging data is reviewed.

Geothermal webinar series

Hear directly from our experts how ThruBit services contributed to the Department of Energy's Utah FORGE EGS project.

Explore all webinars

Subsurface Fracture Characterization Case Study from Utah FORGE

Hear from Erik Borchardt, Reservoir Performance business development manager, and Andy Wray, North America borehole geology domain champion, as they discuss how characterizing, initiating, and sustaining interconnected fracture networks is crucial to the success of developing large-scale, economically sustainable enhanced geothermal system (EGS) reservoirs.

Now available on-demand

Watch On-Demand