Company lists · Data refreshed September 2026

Top 25 Oil and gas field maintenance companies worldwide

Name: Oil and gas field maintenance companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 2,733 companies tracked

RevenueBase identified 2,733 oil and gas field maintenance companies worldwide as of September 2026 and tracks 106,757 professional contacts across them, including 16,408 with verified work emails and 0 with mobile numbers. The United States is the largest market and Houston the largest hub.

This list covers oil and gas field maintenance companies worldwide, 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. Country and city lists for oil and gas field maintenance companies follow the table.

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

2,733Companies

106,757Contacts tracked

16,408Verified emails

0Mobile numbers

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The 25 largest oil and gas field maintenance companies worldwide

Ranked by team size

Top 25 of 2,733 oil and gas field maintenance companies worldwide, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas field 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	Cotemar	Partial evidence	Ciudad Del Carmen, MexicoHQ checked Sep 17, 2026	5,001-10,000	4,138 contacts →
	Partial evidence “We are Mexican company specialized in services for the oil industry since 1979.” Source: RevenueBase Database · checked Sep 17, 2026
2	PT Elnusa TBK	Strong evidence	Jakarta Selatan, IndonesiaHQ checked Sep 17, 2026	1,001-5,000	3,932 contacts →
	Strong evidence “We are the one and only national company that possesses combined competencies in oil & gas services: seismic, drilling and oilfield.” Source: RevenueBase Database · checked Sep 17, 2026
3	Estrutural	Indirect evidence	Porto Alegre, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,461 contacts →
	Indirect evidence “Quem somos: Somos uma empresa nacional, com mais de 30 anos no segmento da construção, montagem e manutenção industrial.” Source: RevenueBase Database · checked Sep 17, 2026
4	OCYAN	Indirect evidence	Rio De Janeiro, BrazilHQ checked Sep 17, 2026	1,001-5,000	2,427 contacts →
	Indirect evidence “A OCYAN atua há décadas na prestação de serviços para o setor de óleo e gás upstream, estruturando suas operações em três frentes de atuação.” Source: RevenueBase Database · checked Sep 17, 2026
5	Oilserv	Indirect evidence	Dubai, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	2,249 contacts →
	Indirect evidence “OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Source: RevenueBase Database · checked Sep 17, 2026
6	SAN Antonio Internacional	Indirect evidence	Comuna 1, ArgentinaHQ checked Sep 17, 2026	1,001-5,000	2,064 contacts →
	Indirect evidence “Somos la mayor prestadora de servicios de perforación de la Argentina y somos líderes en la prestación de servicios asociados al mantenimiento y optimización de los pozos de…” Source: RevenueBase Database · checked Sep 17, 2026
7	EMC Egyptian Maintenance Company	Strong evidence	New Cairo, EgyptHQ checked Sep 17, 2026	5,001-10,000	2,003 contacts →
	Strong evidence “Since its foundation in 1997, EMC has become a well-known maintenance and modification service provider to major oil, gas and petrochemical companies, pipeline and refinery…” Source: RevenueBase Database · checked Sep 17, 2026
8	Superior Energy Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,938 contacts →
	Strong 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
9	ELFE	Indirect evidence	Macaé, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,898 contacts →
	Indirect evidence “No mercado há mais de duas décadas, a Axia é uma empresa nacional com atuação em operação e manutenção industrial.” Source: RevenueBase Database · checked Sep 17, 2026
10	Universal Plant Services	Indirect evidence	Deer Park, TX, United StatesHQ checked Sep 17, 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 17, 2026
11	PMI	Indirect evidence	Irvine, CA, United StatesHQ checked Sep 17, 2026	n/a	1,308 contacts →
	Indirect evidence “Training and Development Solutions” Source: RevenueBase Database · checked Sep 17, 2026
12	Cudd Energy Services	Strong evidence	The Woodlands, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,285 contacts →
	Strong evidence “Cudd offers a broad range of technical and specialized oilfield services to companies engaged in the exploration and production of oil and natural gas worldwide.” Source: RevenueBase Database · checked Sep 17, 2026
13	Strike	Partial evidence	Spring, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,155 contacts →
	Partial evidence “Strike safely and reliably delivers the specialized asset maintenance, construction, and contracting services that are business-critical to the energy, chemical, manufacturing…” Source: RevenueBase Database · checked Sep 17, 2026
14	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
15	Irmãos Passaúra S A	Indirect evidence	Curitiba, BrazilHQ checked Sep 17, 2026	1,001-5,000	1,075 contacts →
	Indirect evidence “Empresa de Montagem e Manutenção Industrial” Source: RevenueBase Database · checked Sep 17, 2026
16	Emdad Group	Strong evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	1,027 contacts →
	Strong evidence “Emdad LLC is a leading UAE-based service provider in the Oil & Gas sector, delivering integrated solutions that support upstream and downstream operations.” Source: RevenueBase Database · checked Sep 17, 2026
17	Petromaint	Indirect evidence	Alexandria, EgyptHQ checked Sep 17, 2026	5,001-10,000	1,014 contacts →
	Indirect evidence “Petromaint is an Egyptian General Petroleum Corporation “EGPC” investment company established in 1997, under the provisions of investment Law No.” Source: RevenueBase Database · checked Sep 17, 2026
18	Adyard ABU Dhabi LLC	Strong evidence	Abu Dhabi, United Arab EmiratesHQ checked Sep 17, 2026	1,001-5,000	990 contacts →
	Strong evidence “Adyard is one of the United Arab Emirates (UAE) leading providers of services to the oil and gas, power, and water industries.” Source: RevenueBase Database · checked Sep 17, 2026
19	Novus Bolashak	Partial evidence	Atyrau, KazakhstanHQ checked Sep 17, 2026	1,001-5,000	938 contacts →
	Partial evidence “Novus Bolashak are a Full Service Systems Completion & Long Term Maintenance & Operations Contractor, including Procurement, Sub-contracting, Punch Identification & Clearing, Pre…” Source: RevenueBase Database · checked Sep 17, 2026
20	KLX Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	857 contacts →
	Indirect 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
21	DLS Archer	Indirect evidence	Neuquén, ArgentinaHQ checked Sep 17, 2026	1,001-5,000	803 contacts →
	Indirect evidence “Presentes en el mercado Argentino hace más de 45 años.” Source: RevenueBase Database · checked Sep 17, 2026
22	LLC	Indirect evidence	Al Khuwair Main, OmanHQ checked Sep 17, 2026	1,001-5,000	751 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
23	MB Petroleum Services LLC	Indirect evidence	Muscat, OmanHQ checked Sep 17, 2026	1,001-5,000	748 contacts →
	Indirect evidence “MB Petroleum Services is a multinational corporation providing cost-effective quality drilling, integrated well services and integrated production services worldwide with the…” Source: RevenueBase Database · checked Sep 17, 2026
24	SPM OIL & GAS	Indirect evidence	Fort Worth, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	727 contacts →
	Indirect evidence “When you’re in the oilfield, you need a name you can trust.” Source: RevenueBase Database · checked Sep 17, 2026
25	Hydrochempsc	Partial evidence	Deer Park, TX, United StatesHQ checked Sep 17, 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 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 and gas field 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 and gas field maintenance companies.
Partial evidence: Its own public description names part of oil and gas field 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 and gas field 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 2,733 oil and gas field maintenance companies worldwide

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Oil and gas field maintenance companies worldwide at a glance

As of Sep 17, 2026

15.4%Verified-email coverage

39.1Average contacts per company

11-50Median size (employees)

3.4%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

672

11-50

979

51-200

665

201-500

242

501-1,000

1,001-5,000

5,001-10,000

10001+

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 and gas field 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.
Coverage: 24 countries, largest first: the United States, Canada, Nigeria, Brazil, the United Arab Emirates, Argentina, India, Mexico, Malaysia, Saudi Arabia and 14 more. Country and city lists for oil and gas field maintenance companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “oil and gas field 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 and gas field 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 and gas field maintenance companies, and records with no verified work email.
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, 16,408 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 and gas field maintenance companies by location

27 lists · largest first

Every Oil and gas field maintenance companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 and gas field 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 and gas field maintenance companies are there worldwide?

RevenueBase identified 2,733 oil and gas field maintenance companies worldwide 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?

Cotemar, headquartered in Ciudad Del Carmen, tops this list with the largest team on record.

Which country has the most oil and gas field maintenance companies?

The United States leads with 871 companies, followed by Canada (250) and Nigeria (208). Every oil and gas field maintenance companies list by country and city is linked on this page.

Which city has the most oil and gas field maintenance companies?

Houston leads with 94 headquartered companies, followed by Port Harcourt (84) and Midland (59).

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 16,408 verified decision-maker contacts tracked across these 2,733 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.

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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.