2005 California Public Resources Code Sections 3635-3637.3 Article 2. Definitions

3635.  Unless the context otherwise requires, the definitions in
this article govern the construction of this chapter.
3635.1.  "Person" means any natural person, corporation,
association, partnership, limited liability company, joint venture,
receiver, trustee, executor, administrator, guardian, fiduciary, or
other representative of any kind and includes the state and any city,
county, city and county, district or any department, agency, or
instrumentality of the state or of any governmental subdivision
whatsoever.
3635.2.  "Land" means both surface and mineral rights.
3635.3.  "Pool" means an underground reservoir containing, or
appearing at the time of determination to contain, a common
accumulation of crude petroleum oil or natural gas or both.  Each
zone of a general structure which is separated from any other zone in
the structure is a separate pool.
3635.4.  "Field" means the same general surface area which is
underlaid or reasonably appears to be underlaid by one or more pools.
3635.5.  "Tracts of land" means land areas under separate ownership
which are all of the following:
   (a) Contiguous either on the surface or in the subsurface.
   (b) Located within a field which has been producing for more than
20 years.
   (c) Located within a field over 75 percent of which lies within
incorporated areas.
3636.  "Unit agreement" means and includes, in addition to the unit
agreement entered into pursuant to the provisions of Article 3
(commencing with Section 3640) of this chapter, any consent agreement
or other agreement entered into in connection with, and supplemental
to, such unit agreement, but does not include a unit operating
agreement or any preliminary agreement confined to effectuating any
exchange of interests in land which the parties to such preliminary
agreement may desire.  "Unit operating agreement" means an agreement,
entered into by the working interest owners only, governing all
operations performed by the unit operator pursuant to the unit
agreement and the unit operating agreement for the production of
unitized substances.
3636.1.  "Unit area" means all lands included within an area subject
to a unit agreement entered into pursuant to the provisions of
Article 3 (commencing with Section 3640) of this chapter.
3636.2.  "Unit production" means all oil, gas, and other hydrocarbon
substances produced from a unit area from the effective date of a
unit agreement approved by the supervisor pursuant to Section 3643.
3636.3.  "Unit operator" means the person or persons designated by
the working interest owners as operator or operators of the unit
area.
3637.  "Working interest" means an interest  held in lands by virtue
of fee title, including lands held in trust, a lease, operating
agreement, or otherwise, under which the owner of such interest has
the right to drill for, develop, and produce oil and gas.  A working
interest shall be deemed vested in the owner thereof even though his
right to drill or produce may be delegated to an operator under a
drilling and operating agreement, unit agreement, or other type of
operating agreement.
3637.1.  "Working interest owner" means a person owning a working
interest.
3637.2.  "Royalty interest" means a right to or interest in oil and
gas produced from any lands or in the proceeds of the first sale
thereof other than a working interest.
3637.3.  "Royalty interest owner" means a person owning a royalty
interest.