TuffTRAC OH

Openhole evaluation wireline tractor

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High-force extended-reach tractor

The TuffTRAC OH^TM 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

Traction control

Enables real-time adjustment of the radial force applied by the tractor arms. Once a difficult interval is successfully traversed, radial force is decreased to avoid unnecessary wear of wheels and drive components while conserving 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 complements the cable head tension to retrieve downhole equipment and effectively prevent fishing operations.

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

Versatile, modular deployment for specific environments

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