> Enrich.chat gives AI agents verified work emails and mobiles. To use it from an agent, read https://enrich.chat/agents.md . This is the Markdown version of https://enrich.chat/sic/2911/ # SIC code 2911: Petroleum refiner The companies classified under SIC 2911, where they are based, how big they are and how the code maps to NAICS. By Enrich.chat Editorial. Updated October 22, 2026. **Short answer:** SIC 2911 is the Standard Industrial Classification code for Petroleum refiner, in division D (Manufacturing). The companies counted under it are mixed in size, with the middle one in the 51 to 200 range. ## What is SIC 2911? SIC 2911 is the Standard Industrial Classification code for Petroleum refiner. It sits in division D, Manufacturing. The first two digits name the major group, and the last two narrow it to a single industry. Most of the companies counted also carry NAICS 324110 (90%). - 24% of the companies counted have 50 or fewer employees, and the middle one is in the 51 to 200 range. - The largest group is headquartered in the United States (44%). - Most were founded in the 2010s (20%), then the before 1960 (18%). **Figure: How SIC 2911 is built.** The code 2911 split into its parts: major group 29, then industry group and industry. It sits in division D, Manufacturing. *The four digits of SIC 2911.* ## Which companies are classified under SIC 2911? The biggest by headcount range include Perenco, Nayara Energy, Petron, Irving Oil and Delek Us Holdings. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | Nayara Energy | Mumbai, India | 1,001 to 5,000 | | Petron | Mandaluyong City, Philippines | 1,001 to 5,000 | | Irving Oil | Saint John, Canada | 1,001 to 5,000 | | Delek Us Holdings | Brentwood, TN | 1,001 to 5,000 | | Innospec | Englewood, CO | 1,001 to 5,000 | | Slovnaft | Bratislava, Slovakia | 1,001 to 5,000 | | Ergon | Flowood, MS | 1,001 to 5,000 | | Pbf Energy | Parsippany, NJ | 1,001 to 5,000 | | Cvr Energy | Sugar Land, TX | 1,001 to 5,000 | | Petron Malaysia Refining & Marketing Bhd | Kuala Lumpur, Malaysia | 501 to 1,000 | | Motul | Aubervilliers, France | 501 to 1,000 | | Strathcona Resources | Calgary, Canada | 501 to 1,000 | | Liquigas | Milan, Italy | 501 to 1,000 | | Eternis Fine Chemicals | Mumbai, India | 501 to 1,000 | | Proto Energy | Nairobi, Kenya | 501 to 1,000 | | Raffineria Di Milazzo S.C.P.A | Milazzo, Italy | 501 to 1,000 | | Tiger Offshore Rentals | Houston, TX | 501 to 1,000 | | West Texas Gas | Midland, TX | 501 to 1,000 | | Omera Petroleum | Dhaka, Bangladesh | 201 to 500 | | Asia Petrochemicals | Dubai, United Arab Emirates | 201 to 500 | | Raffinerie Heide | Hemmingstedt, Germany | 201 to 500 | | Hunt Refining | Tuscaloosa, AL | 201 to 500 | | Petrojam | Kingston, Jamaica | 201 to 500 | | Indorama Ventures Xylenes & Pta | Decatur, AL | 201 to 500 | | Vertex Energy | Houston, TX | 201 to 500 | The table shows the 25 biggest by headcount range, with ties broken by audience size. The charts and percentages below cover every company counted for this page, not just these 25, and companies with fewer than 11 employees are not counted. Headquarters is the location on each company's public profile. ## Where are SIC 2911 companies based? The largest groups are headquartered in the United States (44%), India (11%) and Italy (11%). **Figure: Where companies in SIC 2911 are based.** Bars for the share of counted companies in SIC 2911 headquartered in each country: United States 44%, India 11%, Italy 11%, Germany 3%, United Kingdom 3%. *Share of counted companies in SIC 2911 by headquarters country.* ## How big are the companies counted for SIC 2911? 24% of them have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. **Figure: Size of companies in SIC 2911.** Seven columns for the share of counted companies in SIC 2911 in each employee range: 11 to 50 24%, 51 to 200 28%, 201 to 500 24%, 501 to 1,000 14%, 1,001 to 5,000 10%, 5,001 to 10,000 1%, 10,001+ 0%. *Share of counted companies in SIC 2911 in each employee range.* ## How old are SIC 2911 companies? Most were founded in the 2010s (20%), then the before 1960 (18%). **Figure: When companies in SIC 2911 were founded.** Eight columns for the share of counted companies in SIC 2911 founded in each era: Before 1960 18%, 1960s 5%, 1970s 12%, 1980s 12%, 1990s 12%, 2000s 18%, 2010s 20%, 2020s 2%. *Share of counted companies in SIC 2911 by the era they were founded in, for the ones that list a founding year.* ## How SIC 2911 compares - 24% of companies in SIC 2911 have 50 or fewer employees, against 60% across all NAICS codes on this site. ## SIC 2911 and the NAICS system NAICS replaced SIC as the U.S. federal standard in 1997, but the two do not line up one to one. These are the NAICS codes seen most among the companies counted under SIC 2911. | Code | Title | Share of counted | | --- | --- | --- | | NAICS 324110 | Petroleum Refineries | 90% | | NAICS 457120 | Other Gasoline Stations | 2% | ## Where SIC codes come from SIC was created in the 1930s and is now historical: the U.S. government replaced it with NAICS in 1997. It is still widely used, and the SEC still assigns a SIC code to every company that files on EDGAR. The full list is in the [SIC manual](https://www.osha.gov/data/sic-manual) that OSHA hosts, and the Census Bureau's [guide to understanding NAICS](https://www.census.gov/programs-surveys/economic-census/year/2022/guidance/understanding-naics.html) explains how the two relate. ## How do you reach the people at SIC 2911 companies? The people to talk to are usually operations, supply chain and procurement leaders. You can build the list in three prompts to your AI agent. ### 1. Count them (free) Counting who matches never uses credits. ```text Use www.enrich.chat to count the companies with SIC code 2911 (Petroleum refiner) ``` ### 2. Find the people (5 credits per person) Name the roles you sell to. Each person returned is 5 credits, and name, title and company are included. ```text Use www.enrich.chat to find the operations, supply chain and procurement leaders at companies with SIC code 2911, with their titles ``` ### 3. Get their work emails (10 credits each) An email is 10 credits only when one is found. Every email comes with a status: verified, catch-all or unknown. ```text Use www.enrich.chat to find the work emails for these people and tell me which ones are verified ``` ## Frequently asked questions ### What is SIC code 2911? SIC 2911 is the code for Petroleum refiner, in division D (Manufacturing). ### What is the NAICS code for SIC 2911 (Petroleum refiner)? 90% of the companies counted carry NAICS 324110 (Petroleum Refineries), but the two systems do not map one to one. ### Which companies are classified under SIC 2911? The biggest by headcount range include Perenco, Nayara Energy, Petron, Irving Oil and Delek Us Holdings. The page lists 25 with links to their profiles where we have them. ### How big are the companies in SIC 2911? 24% have 50 or fewer employees, and the middle one is in the 51 to 200 range. Companies with fewer than 11 employees are not counted. ### Is SIC still used? Yes. The U.S. government replaced SIC with NAICS in 1997, but SIC codes are still common in business databases, and the SEC still uses them on EDGAR. ## Try this prompt Find the people at SIC 2911 companies ```text Use www.enrich.chat to find the operations, supply chain and procurement leaders at companies with SIC code 2911, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)