The Electroproject implementation is different. There is little possibility of the implementation making an impact on existing equipment before commissioning. In a regular Ztorque implementation, the controller is programmed in the VFD during commissioning.The implementation is less intrusive than other solutions as the controller is not programmed in the VFD but on an external IPC. The Electroproject Ztorque controller is a standalone controller, which can be used on all electrical TDs.These insights have led to a unique proposition for the implementation of the Ztorque controller: The key performance indicator used is called the Hummingbird Plot.Įlectroproject’s unique approach to ZtorqueĪs part of the development team for Ztorque, Electroproject has unique insights on the functionality and background of Ztorque technology. The operational performance of such a system can be analyzed using control-system analysis techniques. The ability of the system to perform across the bandwidth is determined by the system design and hardware available on the rig. Wide-band ability to absorb torsional vibration modes for most drilling conditions.The main properties of Ztorque are the following: This is in contrast to Shell’s classic Softtorque Rotary System (STRS), which is focused on absorbing torque waves of the first vibration mode and needs regular (stand by stand) tuning as the well deepens. The technology is based on transmission-line theory with an underlying ambition of absorbing all torque waves arriving at the top drive. Ztorque is a wide-band impedance (Z) matching concept, which requires no tuning. Ztorque is the latest Shell-developed torsional vibration mitigation system.
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