It should be regularly possible to make anywhere from 12 to 20 rolls without getting busted, just as it should be possible to roll a standard 6 sided die up to 10-12 times WITHOUT ever rolling a 6.
However in practice I find the number of occasions where you can survive more than 10 rolls to be quite small. I started to log this very thing this week.
Every time I play I'm now going to push 6,7,8 until I bust and then record how many rolls the system allowed me to have.
My first attempt saw me get 17 rolls. However I'm willing to bet that for the majority of time i will struggle to get 10