Well, off topic perhaps. Assuming reservoir decline will necessarily lead to ground subsidence is pretty silly too.
Some comments from TOD on the Bernstein study.
$this->bbcode_second_pass_quote('', 'F')urthermore, the oil at Ghawar is >6000 feet underground, overlain by and encased in rock. Why would the ground subside, with or without water injection? It's absurd to say the least.
Perhaps the Bernstein analyst, the much discredited Neil McMahon, thinks that oil fields are big underground caverns or somesuch.
Last thing I remember from this guy, he was saying that oil prices were going back to $35 - this was when they were at about $60. Worse than Yergin..... 'nuff said.