LEDGES and CUTTINGS are the major cause of tool holdup  

  • The GUIDE SKIS over ledges

  • The TOOL TAXI carries the logging tool over and above the wellbore cuttings 



Ledging is the most common cause of tool holdup.  It can occur at relatively low deviations, often immediately below the casing shoe.  The  GUIDE nose is angled upwards to permit the tool-string to SKI seamlessly over a step ledge- without holdup.  The GUIDE nose angle is adjustable to suit hole size and standoff.
Hole cleaning is difficult in deviated wellbores, particularly in over-gauge hole. The logging tool will plough cuttings and impede descent.  The TOOL TAXI carries the logging tool over and  above the wellbore wall, thereby bridging cuttings.


Stephen McCormick | Managing Director | Petromac Limited
Auckland, New Zealand Mob +64(0)210549158 Tel +64(0)95366621 Email steve@petromac.co.nz