Company lists · Data refreshed September 2026

Top 25 Oil refinery equipment contractors based in Houston, United States

Name: Oil refinery equipment contractors based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 273 companies tracked

RevenueBase identified 273 oil refinery equipment contractors headquartered in Houston, United States as of September 2026 and tracks 103,653 professional contacts across them, including 31,821 with verified work emails. Houston is the largest hub.

This list covers oil refinery equipment contractors 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 17, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

273Companies

103,653Contacts tracked

31,821Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest oil refinery equipment contractors based in Houston, United States

Ranked by team size

Top 25 of 273 oil refinery equipment contractors based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil refinery equipment contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Baker Hughes	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	61,166 contacts →
	Indirect evidence “Baker Hughes (NASDAQ: BKR) is an energy technology company that provides solutions for energy and industrial customers worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
2	Mcdermott International, LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	20,135 contacts →
	Indirect evidence “McDermott is a premier provider of engineering and construction solutions to the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
3	OIL States International	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	2,215 contacts →
	Partial evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
4	Superior Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
5	Audubon Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,488 contacts →
	Indirect evidence “Founded in 1997, Audubon Companies LLC provides EPC, consulting, fabrication, and field services to energy and industrial operators across the globe.” Source: RevenueBase Database · checked Sep 17, 2026
6	Dril-Quip	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,387 contacts →
	Indirect evidence “Dril-Quip is part of Innovex, a unique energy industrial platform.” Source: RevenueBase Database · checked Sep 17, 2026
7	Englobal	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	1,183 contacts →
	Indirect 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 17, 2026
8	Stewart & Stevenson	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,135 contacts →
	Strong evidence “Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Source: RevenueBase Database · checked Sep 17, 2026
9	KLX Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
10	Wyatt Field Service Company	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	686 contacts →
	Partial evidence “WYATT is recognized for executing complex maintenance, outage, turnaround, and capital construction projects across the Oil, Gas & Chemical, and Power markets.” Source: RevenueBase Database · checked Sep 17, 2026
11	Willbros	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	665 contacts →
	Strong evidence “Primoris is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and…” Source: RevenueBase Database · checked Sep 17, 2026
12	Worldwide Oilfield Machine	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	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 17, 2026
13	The Mundy Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	564 contacts →
	Indirect evidence “The Mundy Companies is a privately owned company headquartered in Houston, Texas with offices Pasadena, TX, Nederland, TX, and Wilmington, NC.” Source: RevenueBase Database · checked Sep 17, 2026
14	W-Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	552 contacts →
	Indirect evidence “Our expertise encompasses the full spectrum of system technologies from pneumatic - hydraulic control systems to state of the art programmable solutions to chemical injection…” Source: RevenueBase Database · checked Sep 17, 2026
15	Ingenero	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	532 contacts →
	Indirect 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 17, 2026
16	Scmi INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	n/a	470 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
17	CAM Industrial Solutions LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	434 contacts →
	Partial evidence “With decades of refinery, petrochemical, fertilizer and power plant experience, CAM Industrial Solutions has become the standard in heavy industrial maintenance, turnaround and…” Source: RevenueBase Database · checked Sep 17, 2026
18	Afglobal Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	311 contacts →
	Partial evidence “AFGlobal Corporation is an oil and gas OEM specializing in technology, products, and services with fully-integrated manufacturing capabilities to clients around the world.” Source: RevenueBase Database · checked Sep 17, 2026
19	ARION	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	310 contacts →
	Indirect evidence “We are A-Team of engineers specializing in the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
20	Amerapex	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	280 contacts →
	Indirect evidence “Amerapex Corporation is a technology, engineering and industrial services company based in Houston, TX with operations globally, offering technical expertise in processes and…” Source: RevenueBase Database · checked Sep 17, 2026
21	Mogas, A Flowserve Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	252 contacts →
	Indirect evidence “MOGAS, A Flowserve Company, is the most trusted severe service technology company offering severe service valves, surface engineering / coating, modular process units, and…” Source: RevenueBase Database · checked Sep 17, 2026
22	Gulfspan Industrial LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	251 contacts →
	Indirect evidence “Gulfspan Industrial, LLC is a mechanical construction and industrial services company that specializes in performing turnarounds, capital projects, and maintenance.” Source: RevenueBase Database · checked Sep 17, 2026
23	Relevant Industrial, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	209 contacts →
	Partial evidence “Relevant Solutions is the preferred provider of process equipment solutions.” Source: RevenueBase Database · checked Sep 17, 2026
24	Gulf Island	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	193 contacts →
	Indirect evidence “Gulf Island is a leading fabricator of complex steel structures and modules and provider of specialty services, including project management, hookup, commissioning, repair…” Source: RevenueBase Database · checked Sep 17, 2026
25	Deepsea Technologies	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	166 contacts →
	Strong evidence “Deepsea Technologies, Inc.(DTI) Engineers and Manufactures a wide range of products and equipment used in subsea oil & gas field development projects.” Source: RevenueBase Database · checked Sep 17, 2026

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: oil refinery equipment contractors. 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 oil refinery equipment contractors.
Partial evidence: Its own public description names part of oil refinery equipment contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil refinery equipment contractors. 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 273 oil refinery equipment contractors based in Houston, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 31,821 reachable decision-makers.

Free signup · no credit card

View the full list →

Oil refinery equipment contractors based in Houston, United States at a glance

As of Sep 17, 2026

30.7%Verified-email coverage

379.7Average contacts per company

11-50Median size (employees)

100.0%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 273 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 oil refinery equipment contractors, 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 “oil refinery equipment contractors”. 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 oil refinery equipment contractors), 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 oil refinery equipment contractors, 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, 31,821 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 17, 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.

Oil refinery equipment contractors by metro in the United States

Oil refinery equipment contractors in Houston273
Oil refinery equipment contractors in Tulsa38
Oil refinery equipment contractors in Midland36
Oil refinery equipment contractors in Odessa25

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 oil refinery equipment contractors, 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 oil refinery equipment contractors are there based in Houston, United States?

RevenueBase identified 273 oil refinery equipment contractors 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?

Baker Hughes, headquartered in Houston, tops this list with the largest team on record.

Which city has the most oil refinery equipment contractors?

Houston leads with 273 headquartered companies, followed by Tulsa (38) and Midland (36).

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 31,821 verified decision-maker contacts tracked across these 273 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 17, 2026.

Ready to reach these companies? Verified emails and direct dials for all 273 oil refinery equipment contractors based in Houston, United States. Start with a free account, no credit card.

Download this list →

Related lists

Oil refinery equipment contractors by geography

Browse the directory

Browse: Companies home · Oil refinery equipment contractors in United States · All United States lists · All Oil refinery equipment contractors lists · New lists

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.