Company lists · Data refreshed September 2026

Top 25 Offshore platform installation companies based in Houston, United States

Name: Offshore platform installation companies based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 13, 2026 136 companies tracked

RevenueBase identified 136 offshore platform installation companies headquartered in Houston, United States as of September 2026 and tracks 55,210 professional contacts across them, including 12,451 with verified work emails and 9,713 with mobile numbers. Houston is the largest hub.

This list covers offshore platform installation 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 13, 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 13, 2026 86% judged on-target in blind review

136Companies

55,210Contacts tracked

12,451Verified emails

9,713Mobile numbers

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The 25 largest offshore platform installation companies based in Houston, United States

Ranked by team size

Top 25 of 136 offshore platform installation companies based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 13, 2026. RevenueBase Smart Search rates how each company's information relates to offshore platform installation 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	Mcdermott International, LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 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 13, 2026
2	Nabors Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	10001+	5,865 contacts →
	Indirect evidence “Nabors Industries is a leading provider of advanced technology for the energy industry.” Source: RevenueBase Database · checked Sep 13, 2026
3	Noble Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 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 13, 2026
4	Valaris Limited	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 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 13, 2026
5	OIL States International	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	5,001-10,000	2,215 contacts →
	Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 13, 2026
6	Helix Energy Solutions Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	1,001-5,000	1,706 contacts →
	Partial evidence “Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Source: RevenueBase Database · checked Sep 13, 2026
7	Audubon Companies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 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 13, 2026
8	Dril-Quip	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	1,001-5,000	1,387 contacts →
	Partial evidence “Dril-Quip is part of Innovex, a unique energy industrial platform.” Source: RevenueBase Database · checked Sep 13, 2026
9	Modec International INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	201-500	685 contacts →
	Partial evidence “MODEC is a general contractor specializing in engineering, procurement, construction and installation of floating production systems including Floating Production Storage and…” Source: RevenueBase Database · checked Sep 13, 2026
10	Willbros	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	10001+	665 contacts →
	Indirect 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 13, 2026
11	Atwood Oceanics	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	501-1,000	639 contacts →
	Indirect evidence “Atwood Oceanics, Inc.” Source: RevenueBase Database · checked Sep 13, 2026
12	Worldwide Oilfield Machine	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 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 13, 2026
13	Pacific Drilling	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	501-1,000	538 contacts →
	Indirect evidence “On April 15, 2021, Noble Corporation plc completed its acquisition of Pacific Drilling Company LLC.” Source: RevenueBase Database · checked Sep 13, 2026
14	Trendsetter Engineering, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	201-500	259 contacts →
	Indirect evidence “Trendsetter is a global provider of specialized subsea solutions to the oil and gas industry's toughest challenges.” Source: RevenueBase Database · checked Sep 13, 2026
15	Gulfspan Industrial LLC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 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 13, 2026
16	CTS Complete Technical Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	51-200	250 contacts →
	Indirect evidence “CTS - Complete Technical Services, Inc.” Source: RevenueBase Database · checked Sep 13, 2026
17	Delmar Systems	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	201-500	207 contacts →
	Partial evidence “Delmar Systems is the trusted partners to most offshore energy industry’s leaders, delivering innovative and customer-focused anchoring and mooring solutions.” Source: RevenueBase Database · checked Sep 13, 2026
18	Gulf Island	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 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 13, 2026
19	Zentech Incorporated	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	51-200	181 contacts →
	Indirect evidence “Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…” Source: RevenueBase Database · checked Sep 13, 2026
20	Deepsea Technologies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	51-200	166 contacts →
	Indirect 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 13, 2026
21	PRT Offshore An Expro Company	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	51-200	155 contacts →
	Partial evidence “PRT Offshore, an Expro company, provides high-quality oilfield rental equipment and services for the global offshore industry.” Source: RevenueBase Database · checked Sep 13, 2026
22	Petrolog Group	Indirect evidence	Houston, United StatesHQ checked Sep 13, 2026	501-1,000	131 contacts →
	Indirect 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 13, 2026
23	Holloman Corporation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	501-1,000	125 contacts →
	Indirect evidence “Holloman Corporation is an Engineering, Procurement, and Construction company with capabilities to design, build, and service energy-related projects on a global level.” Source: RevenueBase Database · checked Sep 13, 2026
24	Perc Engineering	Indirect evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	51-200	124 contacts →
	Indirect evidence “PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.” Source: RevenueBase Database · checked Sep 13, 2026
25	Bisso Marine	Partial evidence	Houston, TX, United StatesHQ checked Sep 13, 2026	201-500	118 contacts →
	Partial evidence “BISSO MARINE is a subsea & offshore midstream infrastructure contractor that has been providing unsurpassed service and quality to the marine and energy industries since 1890.” Source: RevenueBase Database · checked Sep 13, 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: offshore platform installation 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 offshore platform installation companies.
Partial evidence: Its own public description names part of offshore platform installation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore platform installation 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 136 offshore platform installation companies based in Houston, United States

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Offshore platform installation companies based in Houston, United States at a glance

As of Sep 13, 2026

22.6%Verified-email coverage

17.6%Mobile-number coverage

406.0Average contacts per company

11-50Median size (employees)

76.5%Largest-city concentration · Houston

Sep 13, 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+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 16.0d

9,5250–30

2,60031–60

4661–90

790–180

273180+

Company record updated

Median 77.0d

00–30

15,25331–60

31,87461–90

6,63490–180

1,449180+

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 offshore platform installation 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 “offshore platform installation 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 offshore platform installation 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 offshore platform installation 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, 12,451 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 13, 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.

Offshore platform installation companies by metro in the United States

Offshore platform installation companies in Houston104

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 offshore platform installation 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 offshore platform installation companies are there based in Houston, United States?

RevenueBase identified 136 offshore platform installation 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?

Mcdermott International, LTD, headquartered in Houston, tops this list with the largest team on record.

Which city has the most offshore platform installation companies?

Houston leads with 104 headquartered companies, followed by Katy (7) and New Iberia (7).

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 12,451 verified decision-maker contacts tracked across these 136 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 13, 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.