This would be in reference to mineral interest and working interest disbursements. It is secured priority.
In most cases, in a Chapter 11 "Debtor in Possession" proceeding, the debtor prepares and files a "Plan of Reorganization" that must be approved by the Court and certain creditors. In most cases that I have been involved with, the Plan will provide details on when creditors get paid. You can get a copy of the Plan from the Bankruptcy Clerk, the Debtor's attorney or, in some cases, online through the PACER system.