Company lists · Data refreshed September 2026
Top 25 Oilfield software companies based in Houston, United States
RevenueBase identified 446 oilfield software companies headquartered in Houston, United States as of September 2026 and tracks 211,028 professional contacts across them, including 62,640 with verified work emails. Houston is the largest hub.
This list covers oilfield 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, how directly it supports the match, and when it was last checked. Data refreshed September 5, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 software companies based in Houston, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | SLBIndirect evidence | 76,561 | |||
“SLB is a global technology company that has driven energy innovation for more than a century.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 2 | HalliburtonIndirect evidence | 53,380 | |||
“We collaborate and engineer solutions to maximize asset value for our customers.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 3 | 29,577 | ||||
“NOV delivers technology-driven solutions to empower the global energy industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 4 | 6,466 | ||||
“Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 5 | 5,865 | ||||
“Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 6 | FMC TechnologiesIndirect evidence | 4,749 | |||
“FMC Technologies is now TechnipFMC.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 7 | 2,755 | ||||
“Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 8 | OIL States InternationalIndirect evidence | 2,215 | |||
“Oil States International, Inc.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 9 | Superior Energy ServicesPartial evidence | 1,938 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 10 | TGSIndirect evidence | 1,775 | |||
“TGS provides advanced data and intelligence to companies active in the energy sector.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 11 | Quorum SoftwarePartial evidence | 1,563 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 12 | 1,500 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 13 | 1,387 | ||||
“Dril-Quip is part of Innovex, a unique energy industrial platform.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 14 | R Associates INCIndirect evidence | 1,301 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 15 | 898 | ||||
“Since 1992, HAL, Inc.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 16 | 857 | ||||
“KLX Energy Services provides more than 100 mission-critical oilfield services, tools, technologies and equipment to some of the industry’s leading operators.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 17 | LMKRIndirect evidence | 777 | |||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 18 | Nine Energy ServicePartial evidence | 712 | |||
“With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 19 | 703 | ||||
“Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 20 | Worldwide Oilfield MachinePartial evidence | 635 | |||
“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 21 | ION GEOIndirect evidence | 583 | |||
“ION commenced the voluntary Chapter 11 process with lender support and DIP financing in April 2022.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 22 | 532 | ||||
“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: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 23 | Cetco Energy ServicesIndirect evidence | 499 | |||
“CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 24 | 424 | ||||
“EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
| 25 | 379 | ||||
“Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…” Source: company website · checked Sep 5, 2026Thanks. The Data Team will review it. | |||||
Showing 25 of 446 oilfield software companies based in Houston, United States
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Oilfield software companies based in Houston, United States at a glance
As of Sep 5, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 446 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 software companies, so some rows will be adjacent to the category rather than pure plays. The description and evidence 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 SmartSearch, 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 software companies”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among oilfield 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 an evidence 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, 62,640 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 5, 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 software companies by metro in the United States
- Oilfield software companies in Houston446
- Oilfield software companies in Midland82
- Oilfield software companies in Odessa42
- Oilfield software companies in Denver38
- Oilfield software companies in Oklahoma City38
- Oilfield software companies in Spring32
- Oilfield software companies in The Woodlands30
- Oilfield software companies in Austin28
- Oilfield software companies in Dallas27
- Oilfield software companies in Katy27
Frequently asked
How many oilfield software companies are there based in Houston, United States?
RevenueBase identified 446 oilfield 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 has the most oilfield software companies?
Houston leads with 446 headquartered companies, followed by Midland (82) and Odessa (42).
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 62,640 verified decision-maker contacts tracked across these 446 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 5, 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 SmartSearch, 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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