CFR›Title 30›Chapter V›Part 556›Subpart F›Subject Group Length of Lease ContainsSections 556.600–556.603CorpusDaily eCFRDisplayed edition2026-09-01Last updated2026-09-01 Sections 556.600 § 556.600 What is the primary term of my oil and gas lease? 556.601 § 556.601 How may I maintain my oil and gas lease beyond the primary term? 556.602 § 556.602 What is the primary term of my sulfur lease? 556.603 § 556.603 How may I maintain my sulfur lease beyond the primary term? Previous Lease Obligations Lease Obligations