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Z-System®


Ziebel’s proven DFO intervention system delivers quality data by deploying the Z-Rod®, a 15mm diameter composite carbon rod safely into a producing or injecting well


Benefits

  • Access to horizontal well sections without the need for a well tractor
  • Horizontal reach of up to 6000ft can be achieved
  • Minimized deferred production
  • Minimal choking effect on the well – see how the well actually behaves
  • Access to restricted ID wells/ difficult geometry
  • No grease injection required for pressure control
  • No logging passes – stationary acquisition
  • High pull available from light, strong composite carbon rod

Offshore or Land Version

The Z-System® can be configured both as an offshore modular unit or as a trailer mounted land version.  These versions are essentially similar and differ only in details such as their drive system (electric versus hydraulic), the diameter of the main reel, and the regulatory standards they are built to.

 

Main Components

The main components of the system are the Z-Rod®, the Rod Reeler, the Rod Injector Unit with gooseneck, the Pressure Control Stack (PCE), the winch/reeler controls, and the Sensing Cabin.

The Z-Rod® carries 2 multi-mode strands and 4 single mode strands enclosed in a stainless steel tube.  The composite is made of longitudinal carbon fibers bound together in a polymer matrix.  It is light and extremely strong (10 tons in tension) while being chemically stable and compatible for service in all normally found well fluids. 

The Rod Injector

In a manner very similar to coil tubing unit, the rod injector unit grips and snubs (pushes) the Z-Rod® into the well through the PCE, which provides the dynamic pressure seal via a 15 mm side-door stripper unit.  

 

DTS & DAS

Distributed Temperature and Distributed Acoustic measurements are obtained by firing pulsed lasers down separate optic fibers introduced into the well by Ziebel’s Z-Rod® or Z-Line®

The opto-electronics required to fire the lasers and capture the back-scattered (reflected) signals from the fiber in the well are contained at surface in optical interrogator devices supplied by specialist DFO manufacturers. 

To find out more about the physics involved in these measurements please click here

Composite Carbon Rod

At the heart of Ziebel’s proprietary technology is Z-Rod®, the 15mm diameter composite carbon rod which deploys the fiber optic strands or cables securely into the hostile downhole environment. 

Z-Rod® carries 2 multi-mode strands and 4 single mode strands enclosed in a stainless steel tube.  The composite is made of longitudinal carbon fibers bound together in a polymer matrix.  It is light and extremely strong (10 tons in tension) while being chemically stable and compatible for service in all normally found well fluids. 

For further details and a specifications sheet please click here.
© Copyright 2014 Ziebel AS