marginal property
(4) The Secretary or the delegated State shall grant an exception from the reporting and payment requirements for marginal properties by allowing for any calendar year or portion thereof royalties to be paid each month based on the volume of production sold. Interest shall not accrue on the difference for the entire calendar year or portion thereof between the amount of oil and gas actually sold and the share of production allocated to the lease until the beginning of the month following such calendar year or portion thereof. Any additional royalties due or overpaid royalties and associated interest shall be paid, refunded, or credited within six months after the end of each calendar year in which royalties are paid based on volumes of production sold. For the purpose of this subsection, the term “marginal property” means a lease that produces on average the combined equivalent of less than 15 barrels of oil per well per day or 90 thousand cubic feet of gas per well per day, or a combination thereof, determined by dividing the average daily production of crude oil and natural gas from producing wells on such lease by the number of such wells, unless the Secretary, together with the State concerned, determines that a different production is more appropriate.