We have a combo tool that works very well. We only have nozzle plugging when we use the stem to push the coke out or when it is very soft. Both scenarios are rare. I am sure that the drillers still push the coke out with the stem at times, but they don’t inbed the tool enough to plug the nozzles. Have you looked at your pressure at the tool? Are you having coke quality issues? Meaning soft coke, shot coke, etc?
We have a set of our of tools available if needed. We keep these as emergency back ups.
El Segundo Coker