Actually I don't think I've ever put myself into orbit via a geyser. The Buur's have done it to me using force shell yeeting, I've done it by simply bouncing the SRV very fast and very high, and I've done it by wandering around near the intersection of two colliding worlds ..I have heard rumours about that. Maybe @Alec Turner knows more about that...
.. but strangely enough not geysers. One for the todo list I suppose!