I have no study to make reference on that. Obviously, you can access satellite maps of the world from the IEA and other sources that show methane emissions around the world. What's really striking is how low the emissions are in Canada compared to how they are in other parts of the world, like Russia. There is one comment on the “E”.
To comment on the “S” and the “G”, I don't see a mass movement from countries like North America to Russia of young engineers wanting to work in the oil and gas industry. Perhaps that's some indication on the “S” and the “G”.