Oil and gas companies in Louisiana: the service towns, the Haynesville and the refineries

This report is for people looking for oil and gas employers, contractors or partners in Louisiana, mineral owners checking an operator, and B2B sellers whose customers are service companies, gas producers and refiners in the state.

Louisiana in Census data

US Census Bureau County Business Patterns (CBP) 2023, State of Louisiana, NAICS 211 (Oil and Gas Extraction), 213111 (Drilling Oil and Gas Wells), 213112 (Support Activities for Oil and Gas Operations) and 324110 (Petroleum Refineries):

The Census Bureau published the statewide employee and payroll totals but flagged them as high-noise: the noise it adds for confidentiality changed them by 5% or more, so we don't report them. The flag comes from the refinery row. The other segments are published normally:

For the four codes combined, the Census Bureau publishes only one size class: 40 establishments with 100 to 249 employees. The others are withheld. In the support segment alone, 321 of the 706 establishments have fewer than five employees and 42 have 100 or more.

Where the companies are

"Not reported" marks an employee total the Census Bureau flagged as high-noise. Another 30 establishments are recorded statewide, with no parish. Two clusters stand out. Lafayette, Terrebonne, Lafourche, Iberia and St. Martin parishes in the south hold 420 establishments, 312 of them support contractors, many serving the Gulf. Caddo and Bossier in the northwest hold 195, and Caddo leans toward producers (76 extraction establishments), the Shreveport end of the state's gas business.

These are establishments with paid employees, not companies; the self-employed aren't counted, and head offices are often filed under management of companies (NAICS 55). Pipelines (NAICS 486, 299 establishments in Louisiana) and gas processing are outside these codes.

Production and refining

EIA reports the federal offshore Gulf of America separately from any state, at 1,942,000 barrels a day of crude in 2025. A large support count beside small state crude output suggests that much of the service work is for wells outside the state's own production, offshore and in neighboring states. Gas output was 4,352,670 million cubic feet in 2023, fell to 3,614,212 in 2024 and rose to 3,813,990 in 2025.

Public companies based in Louisiana

Companies headquartered in other states don't appear in this table, even when they run large Louisiana operations: Expand Energy's 2025 10-K, for example, lists operations in Louisiana and Texas in the Haynesville and Bossier shales. Check each company's 10-K for its Louisiana assets.

Finding and checking companies

On 1 October 2025 the Department of Energy and Natural Resources became the Department of Conservation and Energy (C&E); older links point to the archived department site. To vet an operator, find its wells and production in SONRIS, check for compliance orders, and for a public company read the 10-K.

Selling to Louisiana oil and gas companies

Illustrative example. The seller and its prices are invented; the counts are Census 2023 data.

Atchafalaya Lifting (atchafalaya.example) inspects and certifies cranes and rigging. Its target is the 312 support establishments in the five southern service parishes. Assume a third run their own lifting equipment and decide locally: about 104 accounts, with one operations or HSE manager each. At a 7% reply rate that's about 7 conversations; if three sign annual inspection contracts at $14,000, that's $42,000 a year, and the shops talk to each other. Bebop can find the service firms that match and research each one; see how to find decision makers for reaching the right person.

Next step: see the state next door, where many Louisiana operators are headquartered, in the report on oil and gas companies in Texas.