Actually, the engine oil can go into the intake and pool. When the vehicle is uprighted, then the oil can go into any cylinder that happens to have an open intake valve.
Turning the engine over at that point can hydralock it. Continuing to turn it over at that point can bend a rod.
When Jorge rolled, I had to take the SuperCharger off to get to all of the spark plugs to pull them out. Then we turned the engine over to get the oil out.
After that, filling the fluids is a must.