Company lists · Data refreshed September 2026
Top 25 Oilfield automation software companies based in Houston, United States
RevenueBase identified 355 oilfield automation software companies headquartered in Houston, United States as of September 2026 and tracks 218,147 professional contacts across them, including 63,662 with verified work emails. Across the United States, Houston is the largest hub for this category.
This list covers oilfield automation software companies headquartered in Houston, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 29, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest oilfield automation software companies based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 76,561 contacts → | ||||
Indirect evidence “SLB is a global technology company that has driven energy innovation for more than a century.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 53,380 contacts → | ||||
Indirect evidence “We collaborate and engineer solutions to maximize asset value for our customers.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 29,577 contacts → | ||||
Indirect evidence “NOV delivers technology-driven solutions to empower the global energy industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,466 contacts → | ||||
Indirect evidence “Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 5,865 contacts → | ||||
Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 4,749 contacts → | ||||
Indirect evidence “FMC Technologies is now TechnipFMC.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,755 contacts → | ||||
Indirect evidence “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 2,215 contacts → | ||||
Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 1,938 contacts → | ||||
Partial evidence “For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1,563 contacts → | ||||
Partial evidence “Quorum Software is a leading provider of energy software worldwide powering growth and profitability for energy businesses by connecting people, workflows, and systems with…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 1,500 contacts → | ||||
Indirect evidence “With over 70 offices in more than 50 countries located in major oil-producing provinces, Core Laboratories provides services to the world's major, national, and independent oil…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,387 contacts → | ||||
Indirect evidence “Dril-Quip is part of Innovex, a unique energy industrial platform.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,301 contacts → | ||||
Indirect evidence “Based in Houston, RAI has been in business over 30 years, providing hardware, support and professional services to Oil and Gas companies around the world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 1,183 contacts → | ||||
Partial evidence “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 898 contacts → | ||||
Indirect evidence “Since 1992, HAL, Inc.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 879 contacts → | ||||
Partial evidence “INTECH Automation & Intelligence is a globally renowned industrial automation & digitalization technology company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 857 contacts → | ||||
Partial evidence “KLX Energy Services provides more than 100 mission-critical oilfield services, tools, technologies and equipment to some of the industry’s leading operators.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 777 contacts → | ||||
Indirect evidence “Founded in 1994 and built on a strong geoscience and data management footprint, LMKR has evolved into a premier technology company expanding its reach to Clean Energy…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 635 contacts → | ||||
Partial evidence “Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 532 contacts → | ||||
Partial evidence “Ingenero's goal is to be the best process engineering firm by delivering the highest quality service and software solutions at the lowest cost.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 424 contacts → | ||||
Indirect evidence “EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 328 contacts → | ||||
Indirect evidence “ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 301 contacts → | ||||
Indirect evidence “Since our founding in 2006, NCS Multistage has grown to be a leading provider of engineered products and support services for oil and natural gas wells around the world.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 286 contacts → | ||||
Indirect evidence “Corporate Overview Independence Contract Drilling was formed in 2011 as a vertically integrated premium land drilling services provider.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 263 contacts → | ||||
Indirect evidence “New technologies developed by the research and product development teams of Rock Flow Dynamics are integrated into the company’s flagship product – tNavigator.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: oilfield automation software companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names oilfield automation software companies.
- Partial evidence
- Its own public description names part of oilfield automation software companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name oilfield automation software companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 355 oilfield automation software companies based in Houston, United States
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Oilfield automation software companies based in Houston, United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 355 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among oilfield automation software companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Houston, United States whose own description of what they do matches “oilfield automation software companies”. Matching reads each company's description, not its industry code or its name.
- RevenueBase Smart Search
- RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names oilfield automation software companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
- What we exclude
- Companies whose own description does not clearly place them among oilfield automation software companies, and records with no verified work email. Companies headquartered outside Houston are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every listed company carries at least one verified work email, 63,662 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 29, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Oilfield automation software companies by metro in the United States
Frequently asked
What is RevenueBase Smart Search?
RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names oilfield automation software companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.
How many oilfield automation software companies are there based in Houston, United States?
RevenueBase identified 355 oilfield automation software companies headquartered in Houston, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
SLB, headquartered in Houston, tops this list with the largest team on record.
Which city in the United States has the most oilfield automation software companies?
Houston leads the United States with 355 headquartered companies, followed by Midland (37) and Austin (26).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 63,662 verified decision-maker contacts tracked across these 355 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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