The amount of oil or gas a well or leasehold is permitted to produce under proration order of a state regulatory body. Under a lease allowable, the lease is considered producing unit. In some instances if a lease has eight wells, for example and one of eight is unable to make its production for some reason the other seven wells can increase their flow to make up the loss of the ailing well. allowable the amount of oil or gas produced from a well per unit of time. In a state using proration, this figure is established monthly by its conservation agency.