Marathon haven't done much for years - an those Brae platforms are enormous - and enormously costly to abandon - all that steel................... comes of being owned by US Steel for a long time I guess
Talisman will not be exiting - they sold half shares in their UK operation to teh Chinese and its now Talisman-Sinopec in Aberdeen
But the new fields get smaller and smaller (less than 20 million barrels on average cp 300++ at something like Brae) and the old ones are gradually fading