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Oil & Gas Fields in United States

The United States has 1,894 oil & gas fields mapped on the OverWatts open energy atlas — the 1st-largest fleet of the 91 countries that hold any, and 27% of the world's mapped total. Of these, 1,817 operating and 19 under construction or proposed. The largest is Permian Basin.

The largest owner-operators are XTO Energy (52), Hilcorp Energy (47) and Continental Resources (44) — XTO Energy alone is named on 3% of them. Half of United States's oil & gas fields in service predate 1961 (median commissioning year of the 911 with a known date), 25 came online in the past decade and the oldest still listed is Midway-Sunset - Aera Energy (Unconventional) Oil and Gas Asset (California, United States), dating from 1901. 19 are in the pipeline, led by Ahpun Oil and Gas Field (Alaska, United States), proposed. They account for 24% of every energy asset OverWatts maps in United States.

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1,894
Oil & Gas Field in United States
#1
of 91 countries
19
In construction / proposed

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Largest oil & gas fields in United States

Who owns United States's oil & gas fields

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

When they were built

Median commissioning year 1961 · oldest Midway-Sunset - Aera Energy (Unconventional) Oil and Gas Asset (California, United States) (1901) · newest Whale (AC772) - Shell Oil and Gas Asset (Federal offshore, United States) (2025) · 911 of 1,894 carry a start date

Under construction & proposed

How United States compares · oil & gas fields by country

Frequently asked

How many oil & gas fields are there in United States?
OverWatts maps 1,894 oil & gas fields in United States — 27% of the world's mapped total, the 1st-largest national fleet of the 91 countries with any.
What is the largest oil & gas field in United States?
Permian Basin, operated by Multiple.
Who owns the oil & gas fields in United States?
XTO Energy is named as owner or operator on the most — 52 of 1,894 (3%). Next are Hilcorp Energy (47), Continental Resources (44) and EOG Resources (40).
How old are United States's oil & gas fields?
The median commissioning year is 1961, across the 911 in service with a known start date. The oldest still listed is Midway-Sunset - Aera Energy (Unconventional) Oil and Gas Asset (California, United States) (1901); 25 came online in the past ten years.
What new oil & gas fields are being built in United States?
19 projects are under construction or proposed. The largest are Ahpun Oil and Gas Field (Alaska, United States), Blacktip (AC380) - LLOG Oil and Gas Asset (Federal offshore, United States) and Blacktip North (AC336) - LLOG Oil and Gas Asset (Federal offshore, United States).

Other asset classes in United States

Power Plant 3,831Pipeline 620Coal / Uranium Mine 599LNG Terminal 176Interconnector 159Grid Storage 101Cement Plant 100Iron & Steel Plant 90Export Terminal 74Chemical Plant 64Refinery 32Data Centre 25

Oil & Gas Fields in other countries

Canada 1,165Russia 338United Kingdom 320Colombia 285China 264Mexico 230Argentina 203Netherlands 166Brazil 165Nigeria 144Norway 143Poland 115