Neb. Rev. Stat. § 57-221: Neb. Rev. Stat. § 57-221

Such governing boards are respectively authorized in their discretion to enter into appropriate agreements for the purpose of unit or cooperative exploration, development, and operation of acreage, or any part of the acreage, covered by leases granted pursuant hereto with other acreage for the production of oil and gas. Such agreements shall provide for the allocation of production on a proportionate acreage or other agreed equitable basis.