> 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/1389/ # SIC code 1389: Oil and gas field services The companies classified under SIC 1389, 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 1389 is the Standard Industrial Classification code for Oil and gas field services, in division B (Mining). The companies counted under it are mostly small: 74% have 200 or fewer employees. ## What is SIC 1389? SIC 1389 is the Standard Industrial Classification code for Oil and gas field services. It sits in division B, Mining. 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 213112 (77%). - 44% 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 (74%). Within the US, Texas is the biggest state (53%). - Most were founded in the 2010s (29%), then the 2000s (28%). **Figure: How SIC 1389 is built.** The code 1389 split into its parts: major group 13, then industry group and industry. It sits in division B, Mining. *The four digits of SIC 1389.* ## Which companies are classified under SIC 1389? The biggest by headcount range include Halliburton, Dof, Deepocean, Superior Energy Services and Varel Energy Solutions. Names link to a company profile where we have one. | Company | Headquarters | Employees | | --- | --- | --- | | [Halliburton](https://enrich.chat/company/halliburton/) | Houston, TX | 10,001+ | | Superior Energy Services | Houston, TX | 1,001 to 5,000 | | Varel Energy Solutions | Houston, TX | 1,001 to 5,000 | | Newpark | Katy, TX | 1,001 to 5,000 | | Keyera | Calgary, Canada | 1,001 to 5,000 | | Endeavor Energy Resources | Midland, TX | 1,001 to 5,000 | | Innovex | Humble, TX | 1,001 to 5,000 | | Safety Management Systems | Lafayette, LA | 1,001 to 5,000 | | Core Laboratories | Houston, TX | 1,001 to 5,000 | | Key Energy Services | Houston, TX | 1,001 to 5,000 | | Nine Energy Service | Houston, TX | 1,001 to 5,000 | | Trican Well Service | Calgary, Canada | 1,001 to 5,000 | | Evolution Well Services | The Woodlands, TX | 1,001 to 5,000 | | Ranger Energy Services | Houston, TX | 1,001 to 5,000 | | Axis Energy Services | Dallas, TX | 1,001 to 5,000 | | Archrock | Houston, TX | 1,001 to 5,000 | | Fesco | Alice, TX | 1,001 to 5,000 | | Asrc Energy Services | Anchorage, AK | 1,001 to 5,000 | | Loenbro | Westminster, CO | 1,001 to 5,000 | | Southeast Connections | Conyers, GA | 1,001 to 5,000 | | Rpc | Atlanta, GA | 1,001 to 5,000 | | Bw Offshore | Oslo, Norway | 501 to 1,000 | | Hibiscus Petroleum Berhad | Kuala Lumpur, Malaysia | 501 to 1,000 | | Oilserv | Woji Port Harcourt, Nigeria | 501 to 1,000 | | United Safety | Airdrie, Canada | 501 to 1,000 | 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 1389 companies based? The largest groups are headquartered in the United States (74%), Canada (13%) and the United Kingdom (5%). **Figure: Where companies in SIC 1389 are based.** Bars for the share of counted companies in SIC 1389 headquartered in each country: United States 74%, Canada 13%, United Kingdom 5%, Nigeria 2%. *Share of counted companies in SIC 1389 by headquarters country.* Within the United States, Texas (53%), Louisiana (13%) and Oklahoma (7%) lead. **Figure: US headquarters of companies in SIC 1389, by state.** A tile map of the United States shaded by the share of counted US companies in SIC 1389 headquartered in each state. The largest are Texas 53%, Louisiana 13%, Oklahoma 7%. *Share of counted US companies in SIC 1389 by headquarters state. The three largest states are outlined.* ## How big are the companies counted for SIC 1389? 44% 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 1389.** Seven columns for the share of counted companies in SIC 1389 in each employee range: 11 to 50 44%, 51 to 200 31%, 201 to 500 13%, 501 to 1,000 7%, 1,001 to 5,000 5%, 5,001 to 10,000 0%, 10,001+ 0%. *Share of counted companies in SIC 1389 in each employee range.* ## How old are SIC 1389 companies? Most were founded in the 2010s (29%), then the 2000s (28%). **Figure: When companies in SIC 1389 were founded.** Eight columns for the share of counted companies in SIC 1389 founded in each era: Before 1960 5%, 1960s 3%, 1970s 5%, 1980s 10%, 1990s 18%, 2000s 28%, 2010s 29%, 2020s 2%. *Share of counted companies in SIC 1389 by the era they were founded in, for the ones that list a founding year.* ## How SIC 1389 compares - 44% of companies in SIC 1389 have 50 or fewer employees, against 60% across all NAICS codes on this site. - Louisiana holds 13% of the US companies here, against 1% across all NAICS codes on this site. ## SIC 1389 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 1389. | Code | Title | Share of counted | | --- | --- | --- | | NAICS 213112 | Support Activities for Oil and Gas Operations | 77% | | NAICS 237120 | Oil and Gas Pipeline and Related Structures Construction | 8% | | [NAICS 333132](https://enrich.chat/naics/333132/) | Oil and Gas Field Machinery and Equipment Manufacturing | 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 1389 companies? The people to talk to are usually operations 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 1389 (Oil and gas field services) ``` ### 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 and procurement leaders at companies with SIC code 1389, 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 ``` ## More to explore Other SIC codes in major group 13: [SIC 1382: Oil and gas exploration services](https://enrich.chat/sic/1382/) ## Frequently asked questions ### What is SIC code 1389? SIC 1389 is the code for Oil and gas field services, in division B (Mining). ### What is the NAICS code for SIC 1389 (Oil and gas field services)? 77% of the companies counted carry NAICS 213112 (Support Activities for Oil and Gas Operations), but the two systems do not map one to one. ### Which companies are classified under SIC 1389? The biggest by headcount range include Halliburton, Dof, Deepocean, Superior Energy Services and Varel Energy Solutions. The page lists 25 with links to their profiles where we have them. ### How big are the companies in SIC 1389? 44% 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 1389 companies ```text Use www.enrich.chat to find the operations and procurement leaders at companies with SIC code 1389, with titles and verified work emails ``` ## Related - [Companies using a technology](https://enrich.chat/companies-using/) - [SIC 1382](https://enrich.chat/sic/1382/) - [Tech stack lookup](https://enrich.chat/tools/tech-stack-lookup/)