How about you ask OEX management for a copy of their Risk Management Plan.
IF it existed, it should have contained a statement(s) to say that the contract with the drilling rig operator had to have a fall back position/ standby strategy/etc to cover the event of BHA/drill string failure/etc. As you have confirmed: "These things happen with wells" so there should be no excuse for not having a plan to cover the event.
In my world and in my day, one could delegate responsibility but not accountability and the latter, my friend, sits with OEX management.
Cheers
R1
OEX Price at posting:
25.2¢ Sentiment: Hold Disclosure: Held