43 C.F.R. § 3137.83 What establishes a participating area?
Title 43 - Public Lands: Interior
The first well you drill meeting the productivity criteria after the unit agreement is formed establishes an initial participating area. When you establish an initial participating area, lands that contain previously existing wells in the unit meeting the productivity criteria (see §3137.82 of this subpart), will— (a) Be added to that initial participating area as a revision, if the well is completed in the same producible interval; or (b) Become a separate participating area, if the well is completed in a different producible interval (see also §3137.88 of this subpart for wells that do not meet the productivity criteria).
Title 43: Public Lands: Interior
PART 3130—OIL AND GAS LEASING: NATIONAL PETROLEUM RESERVE, ALASKA
Subpart 3137—Unitization Agreements—National Petroleum Reserve-Alaska
Participating Areas
§ 3137.83 What establishes a participating area?

