Oregon Revised Statutes Mineral Resources § 520.280

(1) The allocation described in ORS 520.270 (3) shall be in accord with the agreement, if any, of the interested parties. If there is no such agreement, the governing board of the State Department of Geology and Mineral Industries shall determine the relative value, from evidence introduced at the hearing, of the separately owned tracts in the unit area, exclusive of physical equipment, for development of oil and gas by unit operations. The production allocated to each tract shall be the proportion that the relative value of each tract so determined bears to the relative value of all tracts in the unit area.

(2) That portion of the unit production allocated to any tract, and the proceeds from the sale thereof, are the property and income of the several persons to whom, or to whose credit, they are allocated or payable under the order providing for unit operations.