Yep. I thought this would happen. Expect BP to just quietly accept this. They will not sue for payment. They do not want the entire history of their incompetence to be documented in court.
I’ve read that the joint operating agreements have been honed over decades of these people screwing each other to the point that it’s all in there, and Real Stupid Decisions by the principle operator exempt the partners from liability.
Bully for Anadarko.