Oregon Revised Statutes Mineral Resources § 520.240

(1) For the purpose of properly conserving the natural resources of any single oil or gas pool or field, lessees under ORS 274.705 to 274.860 and their representatives may unite with each other jointly or separately, or jointly or separately with others owning or operating lands not belonging to the state, in collectively adopting and operating under a cooperative or unit plan of development or operation of the pool or field, whenever it is determined by the Department of State Lands to be necessary or advisable in the public interest.

(2) The Department of State Lands may, with the consent of the holders of the leases involved, establish, alter, change and revoke any drilling and production requirements of such leases, and make such regulations with reference to such leases, with like consent on the part of the lessees, in connection with the institution and operation of any such cooperative or unit plan, as the Department of State Lands deems necessary or proper to secure the proper protection of the interests of the state.