This is pretty interesting, and fills in at least one gap in our understanding - what's the purpose of having an underwater facility in the first place? Subsea oil drilling seems to answer that question, at least in part. I'm sure something else is going down there (in fact, we know there is) but maybe the oil drilling is a pretext to cover up the other "projects". Or maybe getting oil directly from the ocean floor is simply a way to "fuel" the facility, so that no energy resources are required from the surface to keep the place running. As usual, the more we learn the more we don't know haha.
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Tool pusher" seems unambiguously oil-related, so I think you're onto something for sure, Ash. Combined with the pics from the filming of "Depth", I don't think there's any question about it. Nice find