TuffTRAC OH Openhole Evaluation Wireline Tractor | Schlumberger
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TuffTRAC OH

Openhole evaluation wireline tractor

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UltraTRAC all-terrain wireline tractor.
Real-time radial force regulation and dynamic suspension systems continuously optimize TuffTRAC OH tractor performance as it progresses through the well.

High-force extended-reach tractor for both open and cased hole wireline operations

The TuffTRAC OH openhole evaluation wireline tractor readily conveys large payloads in challenging borehole conditions and across high-angle, extended-reach wells. By replacing conventional reliance on coiled tubing and drillpipe carrier conveyance in both open and cased holes, the TuffTRAC OH tractor simplifies and streamlines wireline operations—reducing cost, time, and risk.

Exceptional navigation in challenging well terrains

The robust maneuverability of the TuffTRAC OH tractor results from three exclusive design features:

  • Traction control enables real-time adjustment of the radial force applied by the tractor arms. If slippage is detected, the amount of radial force can be raised to increase the traction. Once the difficult interval is successfully traversed, radial force is decreased to avoid unnecessary wear of wheels and drive components, as well as to conserve energy.
  • Dynamic suspension maintains the constant radial force applied by the arms to the well walls, independent of borehole size. TuffTRAC OH tractor drives achieve the same tractoring force in well IDs from 3.6 to 15 in.
  • Bidirectional capability decreases operational risk by retrieving the tractor in case of stickiness, abnormally high friction, or borehole collapse. In reverse tractoring mode, the full tractor force of the TuffTRAC OH tractor complements the cable head tension to retrieve downhole equipment and effectively prevent fishing operations.
UltraTRAC being installed at the well site.
The tandem configuration of the TuffTRAC OH tractor being installed at well site.

Modular deployment versatility for environment-specific access

Engineered to withstand the impact of perforating gun detonation as well as the vibration generated in rugose boreholes, the modular TuffTRAC OH tractor has low sensitivity to well conditions. The fully integrated system incorporates multiple peripheral systems into the tractor architecture. Consequently, the equipment needs only a single crew for both tractor operation and the conveyed services. The TuffTRAC OH tractor does not require specialized cable and is compatible with all multiconductor cables.

Optimal tractor performance across all terrains is realized by specifying the number and configuration of the drive sections. A tandem sub increases functionality by enabling independent surface control of the drives above and below the sub. Multiple wheel diameters and proprietary designs are available for the well geometry and expected borehole conditions.

TuffTRAC OH

Wireline Powered Intervention

Reinvent your interventions

Set new standards for success in well intervention operations with real-time monitoring, dynamic tool control, and verified downhole actuation.

MaxPull

High-pull wireline conveyance system

Improve safety, efficiency, reliability, and sticking avoidance with a conveyance solution for every well environment.

TuffLINE

Torque-balanced composite wireline cable

Mitigate high-tension risk and improve safety, efficiency, reliability, and sticking avoidance.

TuffTRAC Wireline Tractor

Log while drilling with a short, modular tractor and the only system with reverse tractoring and traction control.
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Case Study Previously Inaccessible Lateral Logged by Cutting Friction with Smooth-Jacketed Wireline

One run on tractor and 2-44 StreamLINE iX polymer-locked wireline cable acquires flowing and shut-in data.

Case Study North Sea Operator Efficiently Perforates Total 900-ft Interval in Six Tractored Wireline Runs, UK North Sea

Significant rig time saved using the XR-Perf system with UltraTRAC tractor and WIReD release device to run longer gun strings without defaulting to alternative conveyance.
Premium

Tech Paper State-of-the-Art Open Hole Tractor Enables Accurate Pressure Measurement in Horizontal Wells, Resulting in Significant Rig Time Saving

In North Kuwait, formation evaluation in horizontal/highly deviated wells typically requires the use of Logging While Drilling (LWD) technology. In this paper, we will discuss how for the first time in Kuwait a state-of-the-art wireline open hole tractor has been successfully used to convey an advanced wireline pressure measurement in a horizontal well.

Case Study Walkabove VSP Recorded by Using UltraTRAC Tractor Conveyance in Well Deviated 86°, Deepwater Angola

Time-depth and waveform data from four aligned VSI versatile seismic imagers place well trajectory on surface seismic survey and reveal faults.

Case Study Logging on UltraTRAC All-Terrain Tractor Saves 1 Day of Rig Time, Onshore UK

Three advanced formation evaluation passes and a total 4,750 ft tractored in a single 30-hour descent.

Industry Article Efficient Openhole Logging of the Horizontal Wells

As horizontal and deviated drilling continues to increase, safe and efficient data acquisition for reservoir characterization and completion design is essential for maximizing production in the open-hole lateral sections.

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