You might think this is a little bit of a pipe dream: but it does actually work in the UK. Our tax system is a little different from the US one: you can escape it just by going and living in another country.
Inside the riser pipe is a space about half a meter in diameter, large enough to hold the spinning drill pipe and bit and to allow the return flow of drilling fluid.
No other is so dependent on international trade and investment from multinational companies, giving it, you might have thought, an incentive to pipe down a bit.