Primary Term

The primary term is the initial fixed period of an oil and gas lease during which the lessee has the right to explore for and develop minerals. If the lessee fails to establish production by the end of the primary term, the lease generally expires.

Key characteristics: - Fixed period specified in the lease (typically 3 to 10 years) - Lease is maintained during this period by paying delay rentals or by drilling - No production is required during the primary term to keep the lease alive - The habendum clause of the lease defines the primary term

Habendum clause: A typical habendum clause reads: "This lease shall remain in force for a term of [X] years (primary term) and as long thereafter as oil or gas is produced from the leased premises."

Maintaining the lease during the primary term: - Payment of delay rentals (annual per-acre payments) - Commencement of drilling operations - Some leases require continuous drilling obligations - Failure to pay rentals may result in lease termination

Expiration of the primary term: If no production has been established by the end of the primary term: - The lease automatically terminates (unless extended by other lease provisions) - All rights revert to the mineral owner - The mineral owner is free to re-lease the property

Extensions: - Production established before the primary term ends extends the lease indefinitely (held by production) - Some leases include extension clauses for ongoing drilling operations - Force majeure provisions may toll the primary term in certain circumstances