Oil and gas field · the United States
Longhorn (Mississippi Canyon 546)
Longhorn (Mississippi Canyon 546) is an oil and gas field in the United States, with 27,613 boe/day of production in 2025, operated by Llog Exploration Offshore LLC (88.5%) and Eni Petroleum Co Inc (11.5%).
Facts
Every value links to its source, and to the source's own record where it has one. Licences and last-checked dates are per row.
| Fact | Value | Source |
|---|---|---|
| Location | United States | BSEE Data Center · Public domain · checked 24 Oct 2026 |
| Status | Operating | BSEE Data Center · Public domain · checked 24 Oct 2026 |
| Commodities | oil, gas (mainly oil) | BSEE Data Center · Public domain · checked 24 Oct 2026 |
| Discovered | 1986 | BSEE Data Center · Public domain · checked 24 Oct 2026 |
| Onshore or offshore | Offshore | BSEE Data Center · Public domain · checked 24 Oct 2026 |
| Operator | Llog Exploration Offshore LLC (88.5%, of the field's production) | BSEE Data Center · Public domain · checked 24 Oct 2026 |
| Operator | Eni Petroleum Co Inc (11.5%, of the field's production) | BSEE Data Center · Public domain · checked 24 Oct 2026 |
| Production | 27,613 boe/day (17,782 barrels of oil a day, 58,986 Mcf of gas a day, in 2025) | BSEE Data Center · Public domain · checked 24 Oct 2026 |
Research on this oil and gas field and its operator.Who owns it up to the parent company, its working-interest owners, their shares and its production by well, and an introduction to the operator.
Request researchHow it compares by production
Longhorn (Mississippi Canyon 546) is the 82nd-largest of 319 oil and gas fields in the United States by production, with 27,613 boe/day in 2025. Ranks and totals cover the oil and gas fields in our data that report their production, not every one in existence.
| Within | Rank |
|---|---|
| United States | 82nd of 319 |
Timeline
Dated facts about this oil and gas field from its sources, oldest first.
- Discovered
- Llog Exploration Offshore LLC (88.5%) and Eni Petroleum Co Inc (11.5%) on record as operators
Operators and place
- Llog Exploration Offshore LLCOperator · 88.5%
- Eni Petroleum Co IncOperator · 11.5%
- Oil and gas fields in the United States676
- The United States: country profile
More from Llog Exploration Offshore LLC
- Buckskin (Keathley Canyon 872)32,201 boe/day in 2025
- Spruance (Ewing Bank 921)15,779 boe/day in 2025
- Brutus (Green Canyon 158)6,916 boe/day in 2025
- Leon (Keathley Canyon 642)4,591 boe/day in 2025
- Taggart (Mississippi Canyon 816)4,207 boe/day in 2025
- Dome Patrol (Mississippi Canyon 505)4,035 boe/day in 2025
- Appaloosa (Mississippi Canyon 503)2,535 boe/day in 2025
- Pecan, Praline (Mississippi Canyon 74)2,394 boe/day in 2025
Other oil and gas fields in United States
- Marcellus Shale Area1,294,997 boe/day in 2013
- Newark, East891,210 boe/day in 2013
- Wattenberg882,693 boe/day in 2025
- Eagleville850,913 boe/day in 2013
- Haynesville Shale Unit650,987 boe/day in 2013
- B-43 Area (Fayetteville Shale)468,106 boe/day in 2013
- San Juan Basin Gas Area468,019 boe/day in 2013
- Spraberry413,706 boe/day in 2013
Data on this page
- BSEE Data Center. BSEE Data Center, Public domain.
- Colorado ECMC (formerly COGCC). Colorado ECMC (formerly COGCC), Free reuse.
- Source: U.S. Energy Information Administration (Apr 2015). EIA Top 100 U.S. Oil and Gas Fields, Public domain.