Anonymous
For binding/stuck of the tool, each refinery can handle it in different ways and it depends how deep is the tool inside the drum, We sometimes have used the winch to release the stem(this method can cause damage to the rotary joint in Flowserve system case), other times you can install a species of staples around the stem and pull up using camelong of 3 to 4 tons (drum filled with water helps because it allows the fine Coke stop acting like a sticky mud around the stem and other times we have had to disassemble the tool on the top and set up another and start to cut back with the other inside of the drum
Best Regards
espana2005