Hey Brian,
Just a slight correction......it's "Orlen," not "Olsen." Mike Orlen does VERY nice bbl work at crazy reasonable prices. I just got back from him a Super-X 1 bbl he did a superb job of extending the forcing cone and installing choke tubes. Mike is my goto guy for this type of work.
Having said that, I had him port a bbl some years ago and if he still ports bbls the same way, he simply drills a pattern of small (round) holes as his porting configuration. The holes were properly placed and symetrical, but not some of the "fancy" porting patterns and cuts as seen by others today. Also, with the holes being drilled and not EDM'd, you can feel the slightly raised perimeter around the holes that drilling produces......something impossible to address unless you plan to refinish the bbls. That may matter to some, not to others. EDM produces a clean smooth hole.
I don't want to give the impression it was a poor job, just that his porting is basic and not quite as "fancy" as the methods others out there are using. Were I looking to have a set of bbls ported, ProPort would be my choice. Yes, they're more expensive, but the EDM process they use make beautiful clean, cuts and patterns in the bbl.
HTH