Tulsa may have had offices of most every oil company in the world in the 60s and 70s, but it certainly never had the Headquarters of most every oil company in the world. Once you get past Skelly, Cities Service/Citgo, what other oil companies of any size were headquartered in Tulsa?
Exxon, Mobil, Texaco, Shell, Gulf, ARCO, Amoco, Chevron, Phillips, Conoco, BP, Total, Occidental, Unocal, Sunoco, . . . I'm pretty sure none were headquartered in Tulsa.
I think you are confusing Rockwell and McDonnell Douglas when it comes to building assemblies for the Boeing 747. Rockwell did so in Tulsa (and that operation eventually evolved into Spirit Aerosystems).
You're right on the Douglas/Boeing/Rockwell. As for Sunoco, they were Sun Ray DX, Sun Oil Refinery, and the Sun building at 9th & Detroit. And while they weren't 'headquartered" in Tulsa, they did have a major presence. Amoco had their research facility at 41st and Yale, Sinclair had a place at I-44 and Darlington, Chevron had a building downtown, and someone else had one on the SE corner of 21st & Lewis, Shell had offices at 66th & Yale across from the St Francis medical center buildings.