Company lists · Data refreshed September 2026

Top 25 Oil rig maintenance companies based in the United States

Name: Oil rig maintenance companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 517 companies tracked

RevenueBase identified 517 oil rig maintenance companies headquartered in the United States as of September 2026 and tracks 34,474 professional contacts across them, including 6,209 with verified work emails. Houston is the largest hub.

This list covers oil rig maintenance companies headquartered in the 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 20, 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 20, 2026 86% judged on-target in blind review

517Companies

34,474Contacts tracked

6,209Verified emails

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The 25 largest oil rig maintenance companies based in the United States

Ranked by team size

Top 25 of 517 oil rig maintenance companies based in the United States, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to oil rig maintenance companies: 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	Noble Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	5,001-10,000	5,601 contacts →
	Partial evidence “Noble is a leading offshore drilling contractor for the oil and gas industry.” Source: RevenueBase Database · checked Sep 20, 2026
2	Valaris Limited	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	5,001-10,000	3,173 contacts →
	Indirect evidence “We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…” Source: RevenueBase Database · checked Sep 20, 2026
3	Universal Plant Services	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 20, 2026	501-1,000	1,371 contacts →
	Indirect evidence “Universal Plant Services (UPS) is the industry's foremost specialists in rotating and reciprocating equipment services.” Source: RevenueBase Database · checked Sep 20, 2026
4	PMI	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	n/a	1,308 contacts →
	Indirect evidence “Training and Development Solutions” Source: RevenueBase Database · checked Sep 20, 2026
5	Hydrochempsc	Partial evidence	Deer Park, TX, United StatesHQ checked Sep 20, 2026	5,001-10,000	718 contacts →
	Partial evidence “HPC Industrial, a Clean Harbors business, is the leading provider of specialty maintenance services and technology solutions to the critical energy infrastructure in the United…” Source: RevenueBase Database · checked Sep 20, 2026
6	Atwood Oceanics	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	501-1,000	639 contacts →
	Indirect evidence “Atwood Oceanics, Inc.” Source: RevenueBase Database · checked Sep 20, 2026
7	Worldwide Oilfield Machine	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	635 contacts →
	Indirect 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 20, 2026
8	Deep Well Services	Indirect evidence	Zelienople, PA, United StatesHQ checked Sep 20, 2026	501-1,000	384 contacts →
	Indirect evidence “Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Source: RevenueBase Database · checked Sep 20, 2026
9	Knight OIL Tools	Indirect evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	325 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
10	Performance Energy Services, LLC	Indirect evidence	Houma, LA, United StatesHQ checked Sep 20, 2026	501-1,000	305 contacts →
	Indirect evidence “Performance Energy Services, a Danos company, was formed in to deliver safe, client-focused support to the onshore and offshore energy markets.” Source: RevenueBase Database · checked Sep 20, 2026
11	Allrig	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	201-500	281 contacts →
	Partial evidence “Allrig is the one-stop shop partner for all your asset management needs; from inspection, service and repair, to maintenance and parts supply of key equipment.” Source: RevenueBase Database · checked Sep 20, 2026
12	Crosby Energy Services	Indirect evidence	Cut Off, LA, United StatesHQ checked Sep 20, 2026	201-500	272 contacts →
	Indirect evidence “Founded as C&D Wireline in 1968, with C&D Production Specialist joining the business in 1993, today Crosby Energy Services is a certified Women’s Business Enterprise National…” Source: RevenueBase Database · checked Sep 20, 2026
13	Offshore Inland Marine & Oilfield Services, INC	Partial evidence	Pensacola, FL, United StatesHQ checked Sep 20, 2026	51-200	266 contacts →
	Partial evidence “Offshore Inland Marine & Oilfield Services, Inc.(OIMO) corporate headquarters in Pensacola,FL provides a full range of Drilling Rig services and construction support activities…” Source: RevenueBase Database · checked Sep 20, 2026
14	Oscar W. Larson Company	Indirect evidence	Clarkston, MI, United StatesHQ checked Sep 20, 2026	1,001-5,000	187 contacts →
	Indirect evidence “For 80 years, Oscar W.” Source: RevenueBase Database · checked Sep 20, 2026
15	Otto Candies, LLC	Indirect evidence	Des Allemands, LA, United StatesHQ checked Sep 20, 2026	201-500	158 contacts →
	Indirect evidence “Otto Candies, LLC is a maritime transportation and support service company specializing in regional, national, and international operations in support of the offshore energy…” Source: RevenueBase Database · checked Sep 20, 2026
16	K2 Industrial Services, INC	Indirect evidence	Highland, IN, United StatesHQ checked Sep 20, 2026	1,001-5,000	150 contacts →
	Indirect evidence “K2 Industrial Services is a national provider of industrial cleaning, tank cleaning, coatings, insulation, scaffolding and more.” Source: RevenueBase Database · checked Sep 20, 2026
17	Borets US INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	149 contacts →
	Partial evidence “Borets is one of the leading manufacturers of oilfield equipment in the world offering a complete array of oil recovery products and services in the operation, repair, and…” Source: RevenueBase Database · checked Sep 20, 2026
18	Loadmaster Industries	Indirect evidence	Broussard, LA, United StatesHQ checked Sep 20, 2026	51-200	146 contacts →
	Indirect evidence “Loadmaster Industries is a diversified manufacturing, engineering, design, and field services company with 30 years of experience in the global energy and industrial markets.” Source: RevenueBase Database · checked Sep 20, 2026
19	Eastern Energy Services, INC	Indirect evidence	The Woodlands, TX, United StatesHQ checked Sep 20, 2026	201-500	145 contacts →
	Indirect evidence “Eastern is an industry leader in oilfield services for all phases of the operation with top of the line equipment and people.” Source: RevenueBase Database · checked Sep 20, 2026
20	Genesis Endeavors LLC	Partial evidence	Kilgore, TX, United StatesHQ checked Sep 20, 2026	501-1,000	144 contacts →
	Partial evidence “Genesis Endeavors LLC Oilfield, Maintenance, Construction, Instrumentation, Insulation, Scaffolding & Electrical Any questions, feel free to contact us!” Source: RevenueBase Database · checked Sep 20, 2026
21	Taurus Industrial Group, LLC	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 20, 2026	1,001-5,000	142 contacts →
	Indirect evidence “Based in Houston, Taurus Industrial Group (Taurus) is a leading, integrated and industry diversified technical services company offering end-to-end services across multiple…” Source: RevenueBase Database · checked Sep 20, 2026
22	Graco Oilfield Services	Indirect evidence	Frisco, TX, United StatesHQ checked Sep 20, 2026	201-500	134 contacts →
	Indirect evidence “When you choose Graco Oilfield Services you get extraordinary safety and service performance that lowers risk and field operating cost better than anyone.” Source: RevenueBase Database · checked Sep 20, 2026
23	Scandrill INC	Indirect evidence	Tyler, TX, United StatesHQ checked Sep 20, 2026	201-500	133 contacts →
	Indirect evidence “SCANDRILL, INC.” Source: RevenueBase Database · checked Sep 20, 2026
24	Petrolog Group	Partial evidence	Houston, United StatesHQ checked Sep 20, 2026	501-1,000	131 contacts →
	Partial evidence “Petrolog brings energy to the world as an integrated provider of solutions for the entire oil and gas lifecycle.” Source: RevenueBase Database · checked Sep 20, 2026
25	On & Offshore Quality Control Specialist, Llc. QCS	Indirect evidence	Austin, TX, United StatesHQ checked Sep 20, 2026	501-1,000	130 contacts →
	Indirect evidence “Welcome to On & Offshore Quality Control Specialists, LLC.” Source: RevenueBase Database · checked Sep 20, 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 rig maintenance 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 oil rig maintenance companies.
Partial evidence: Its own public description names part of oil rig maintenance companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil rig maintenance 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 517 oil rig maintenance companies based in the United States

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Oil rig maintenance companies based in the United States at a glance

As of Sep 20, 2026

18.0%Verified-email coverage

66.7Average contacts per company

11-50Median size (employees)

19.0%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

129

11-50

165

51-200

137

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 517 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 rig maintenance 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 the United States whose own description of what they do matches “oil rig maintenance 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 oil rig maintenance 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 oil rig maintenance companies, and records with no verified work email. Companies headquartered outside United States 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, 6,209 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 20, 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 rig maintenance companies by metro

Oil rig maintenance companies in Houston98
Oil rig maintenance companies in Midland29

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 rig maintenance 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 oil rig maintenance companies are there based in the United States?

RevenueBase identified 517 oil rig maintenance companies headquartered in the 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?

Noble Corporation, headquartered in Houston, tops this list with the largest team on record.

Which city has the most oil rig maintenance companies?

Houston leads with 98 headquartered companies, followed by Midland (29) and Broussard (17).

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 6,209 verified decision-maker contacts tracked across these 517 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 20, 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.