43 CFR § 3137.22 - What are the size and shape requirements for a unit area?

---
identifier: "/us/cfr/t43/s3137.22"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "43 CFR § 3137.22 - What are the size and shape requirements for a unit area?"
title_number: 43
title_name: "Public Lands: Interior"
section_number: "3137.22"
section_name: "What are the size and shape requirements for a unit area?"
chapter_name: "BUREAU OF LAND MANAGEMENT, DEPARTMENT OF THE INTERIOR"
subchapter_number: "C"
subchapter_name: "MINERALS MANAGEMENT (3000)"
part_number: "3130"
part_name: "OIL AND GAS LEASING: NATIONAL PETROLEUM RESERVE, ALASKA"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "42 U.S.C. 6508, 43 U.S.C. 1733 and 1740."
regulatory_source: "46 FR 55497, Nov. 9, 1981, unless otherwise noted."
cfr_part: "3130"
---


# 3137.22 What are the size and shape requirements for a unit area?

(a) The unit area must—

(1) Consist of tracts, each of which must be contiguous to at least one other tract in the unit, that are located so that you can perform operations and production in an efficient and logical manner; and

(2) Include at least one NPR-A lease.

(b) BLM may limit the size and shape of the unit considering the type, amount and rate of the proposed development and production and the location of the oil or gas.