Continuous Variable Tractoring (CVT)
The ultimate conveyance solution from our pioneering Well Tractor® range. The CVT system automatically maximizes speed and power at all times, optimizing every conveyance run, making operations faster and more efficient than ever before.
Speed, power, evolution
In true Welltec spirit, the new CVT design revolutionizes what’s possible in terms of downhole conveyance.
- First wireline tractor
- First slickline battery tractor
- First coiled tubing tractor
- First CVT design – Continuous Variable Tractoring
Well Tractor CVT represents the next phase in the evolution of our conveyance technology. Now, more than 30 years of conveyance knowledge and experience manifests itself in a new and adaptive system, one which continually utilizes maximum power to deliver optimal speed and force at all times.
CVT is enabled by a whole host of upgrades and new tool features. An integrated system of sensors provides multiple diagnostics and feedback, providing Surface Readout (SRO) data based on measures from each section of the tool, from which the speed/force algorithm can control and respond to downhole requirements.
The new hydraulics and new motor are more powerful than any featured in previous Well Tractor iterations, meaning the toolstring is conveyed to target depth with unparalleled speeds of up to 131 ft/min. Combined with continuous analysis across a broad power band, CVT automatically optimizes every run to eliminate the need for conservative power use, or stopping to change gears or modes.
Each wheel section has its own power unit, creating the effect of multiple downhole tractors in one powerful solution. In the event that one section meets a downhole restriction, the others remain unaffected.
This is the most robust Well Tractor ever made, with the entire solution designed to withstand higher temperatures and pressures than ever before, including enhanced electronics architecture throughout.
Adding to an intervention portfolio already renowned for its ability to help operators save time and cost, while simultaneously reducing operational footprint, Well Tractor CVT maximizes these benefits with industry-leading conveyance.
Applications |
Clean-out solutions |
Milling / Mechanical solutions |
Seismic measurements |
Fluid sampling |
Fishing / Pipe recovery |
SAGD ranging |
Depth determination |
Features |
Passive fail-safe system |
Modular |
Configurable |
Logging while tractoring |
NACE compliant |
OH or CH applications |
Benefits |
Prevents stuck tools |
Maximized speed and force |
Full surface read-out (SRO) |
Streamline operation |
Optimal data acquisition |
Versatility actoss applications |
Specifications* | |
Running OD nominal | 2 1/2” |
Length | 17.2 ft |
Weight in air | 254 lbs |
Max speed | 75 ft/min |
Max pull force | 1000 lbs* |
Maximum well pressure | 20,000 psi |
Maximum well temperature | 365 °F |
Tensile strength | 60,000 lbs |
Compressive strength | 42,000 lbs |
* | For single WT. Tandem configuration offers higher pull force |
Talk to your local expert
At Welltec, our team of specialists is experienced in resolving the unique challenges of well drilling and operations across diverse terrain. Whatever your need, we can help you find a solution.