Re: l-5 was bulging and was dislogded & now free floating next to my spine.
Welcome to the board. Sorry you are having lower back problems and that the disc got to the point where it has fragmented.
Unless there are issues with instability, or other issues that are not mentioned, I would imagine that the surgery you are having is a discectomy. This is a procedure where they will go in and clean up the disc, removing the disc fragments and shaving down any disc material that is overhanging the disc space between the two vertebrae.
This procedure can be done with an open surgery or it can also be done with a minimally invasive procedure called an endoscopic microdiscectomy.
People usually stay overnight and are released the following day.