Rolling Fiberglass Inner Tube (RFI)
Rolling Fiberglass Inner tube (RFI) is a tool which reduces the chance of core jamming problem. This tool is producing for the first time in Iran, to overcome core jamming problems, allowing the operator to stay on bottom and continue coring. Core jamming is a problem which during coring operations may occur and by changing allofoperation parameters like WOB or ROP, it doesn't move forward.
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.