California Codes, Code of Civil Procedure - CCP, Part 2 — Of Civil Actions, Title 10.5 — Partition of Real and Personal Property, Chapter 2 — Commencement of Action, Article 4 — Parties, Section 872.540
Where property is subject to a lease, community lease, unit agreement, or other pooling arrangement with respect to oil or gas or both, the plaintiff need not join as defendants persons whose only interest in the property is that of a lessee, royalty-owner, lessor-owner of other real property in the community, unit, or pooled area, or working interest owner, or persons claiming under them, and the judgment shall not affect the interests of such persons not joined as defendants.
Notes
Exempts specified oil-and-gas interest holders from required joinder when property is subject to a lease, community lease, unit agreement, or pooling arrangement, including lessees, royalty owners, lessor-owners of other property in the area, working interest owners, and persons claiming under them. A judgment does not affect the interests of those who are not joined.
Use as reference
Lexinter.net | California Code, Code of Civil Procedure - CCP § 872.540 | https://laws.lexinter.net/codes/california/code-of-civil-procedure/part-2/title-10-5/chapter-2/article-4/section-872-540