43 CFR §3107.53
Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗
Undeveloped parts of leases retained or assigned out of leases which are extended by production, actual or suspended, or the payment of compensatory royalty will continue in effect for 2 years after the effective date of assignment and for so long thereafter as oil or gas is produced in paying quantities.