Have you experienced any astral travel , out of body situation that was successful?

I do not know if it was the drugs, or a true OBE. I was staring at the ventilation system from my hospital bed. I thought, Im so tired of this room. I kept looking at the vent, and found myself in it, floating thru the dust. I kept going into the wires of the electrical system, seeing sparks rushing past me. I felt tingly, but it didnt hurt. I heard lots of conversations as I went further around. Finally I found myself floating above the roof of the hospital.