looks like we got bru as partner in derby bloc, page-31

That is highly unlikely given the feedback loop there. OBL's half of the Derby block is only going to become more valuable as BRU continues proving up the Laurel. If you think BRU is going to do fraccing and flowtesting and start proving up reserves literally over the fence without the large Laurel coverage of Derby being similarly rerated you're not thinking it through. BRU *cannot* stop creating this value, it's the major component of their operations moving forward. They're not doing going to drop tools for a year or two, crash their own SP and piss off their investors just to get the other half of Derby a bit cheaper. We've seen their hand, everyone knows they want it and think it's valuable and they're going to keep adding value through their own unavoidable actions.

Obligations won't be an issue in this environment. Either via cap raising, farm out to someone else or BRU taking a stake.
It's really a bit silly to think someone won't farm in for the cost of a drill or two on land this prospective. Just think for a second: They got GRK to fund Backreef!