The lease is defined once, with its wells and its provisions. A provision records the clause, the number of days, the rate, and the effective dates, so amendments keep a running history of past rates. When a user changes a well to Shut In, the system creates a shut-in royalty obligation on the lease. It calculates an action by date and a due date from the days on the provision. The status of the obligation moves without anyone updating it, based on the deadlines and requirements specified for that lease. The obligation starts as Open and becomes At Risk when the action by date arrives, and Missed if the due date passes unsatisfied. If the well returns to Producing, it becomes Satisfied. Each change writes an event on the lease, which gives a running history of what happened and when. An obligation calendar shows every action by date and due date across all leases. The land team no longer has to cross-reference well status against lease terms by hand. A status change is reflected on the lease right away, with deadlines already calculated and a flag before the due date.