Rolling Fiberglass Inner tube (RFI) is a tool which reduces the chance of core jamming problem. This tool is producing to overcome core jamming problems, allowing the operator to stay on bottom and continue coring.
    The RFI is recommended for all conventional coring operations where core jamming problems may be expected. It is actively effective in high fractured formations. The RFI is also ideal to reduce the trips which are unacceptable cost.


  • 15 Relief Valves
  • 99 Rolling Pistons
  • Available in all sizes


  • Reducing contact surface between core and inner tube to 1/3000
  • Keeping the fractured parts on their place in inner tube
  • Full-Stage Activation causes to overcome more core jamming problems than similar systems
  • Enhancing Core Recovery 
  • Increasing Core Quality
  • Releasing the over fluid pressure of inner tube to drilling fluid circulation
  • Reducing the rig time of each operation to reduce associated cost
  • Improving the rate of penetration
  • Available for all kind of inner tubes (Fiberglass, Aluminum, ...)

+98-917-649-1207 +98-917-100-9928
#5009, Incubator oil, Science & Technology Park, Aryan Town, Shiraz, Fars Province, Iran

Developed By Mahoo Soft