nonapportionment rule
nonapportionment rule. Oil & gas. The majority doctrine that royalties accrued under a mineral lease on land that is later subdivided during the lease term are not shared by the owners of the subdivisions, but belong exclusively to the owner of the land where the producing well is located. • For example, if Grey granted a lease to Wainwright, then sold one-half of the land to Svenson, and a well on Wainwright’s half began producing minerals, only Wainwright would be entitled to the royalty. Cf. APPORTIONMENT RULE.
