California Code, Probate Code - PROB § 2554

(1) A provision for the payment of rental and royalty to a depositary.

(2) A provision for the appointment of a common agent to represent the interests of all the lessors.

(3) A provision for the payment of a compensatory royalty in lieu of rental and in lieu of drilling and producing operations on the land covered by the lease.

(4) A provision empowering the lessee to enter into any agreement authorized by Section 3301 of the Public Resources Code with respect to the land covered by the lease.

(5) A provision for a community oil lease or pooling or unitization by the lessee.

(1) So long thereafter as minerals, oil, gas, or other hydrocarbon substances or geothermal energy are produced in paying quantities from the property leased or mining or drilling operations are conducted thereon.

(2) If the lease provides for the payment of a compensatory royalty, so long thereafter as such compensatory royalty is paid.

(3) If the land covered by the lease is included in an agreement authorized by Section 3301 of the Public Resources Code, so long thereafter as oil, gas, or other hydrocarbon substances are produced in paying quantities from any of the lands included in any such agreement or drilling operations are conducted thereon.