Company lists · Data refreshed September 2026

Top 25 Offshore platform operators based in the United States

Name: Offshore platform operators based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 358 companies tracked

RevenueBase identified 358 offshore platform operators headquartered in the United States as of September 2026 and tracks 47,935 professional contacts across them, including 7,146 with verified work emails and 11,370 with mobile numbers. Houston is the largest hub.

This list covers offshore platform operators 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 5, 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 5, 2026 86% judged on-target in blind review

358Companies

47,935Contacts tracked

7,146Verified emails

11,370Mobile numbers

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The 25 largest offshore platform operators based in the United States

Ranked by team size

Top 25 of 358 offshore platform operators based in the United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to offshore platform operators: 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	Nabors Industries	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
2	Noble Corporation	Partial evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
3	Valaris Limited	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
4	OIL States International	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	5,001-10,000	2,215 contacts →
	Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 5, 2026
5	Helix Energy Solutions Group	Partial evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
6	Dril-Quip	Partial evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
7	Pioneer Energy Services	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 5, 2026	1,001-5,000	770 contacts →
	Indirect evidence “Pioneer Energy Services is now Patterson-UTI” Source: RevenueBase Database · checked Sep 5, 2026
8	Modec International INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	685 contacts →
	Indirect 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 5, 2026
9	Atwood Oceanics	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	501-1,000	639 contacts →
	Indirect evidence “Atwood Oceanics, Inc.” Source: RevenueBase Database · checked Sep 5, 2026
10	Worldwide Oilfield Machine	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
11	Dynamic Industries, INC	Indirect evidence	New Orleans, LA, United StatesHQ checked Sep 5, 2026	1,001-5,000	567 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
12	Pacific Drilling	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 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 5, 2026
13	Kosmos Energy	Partial evidence	Dallas, TX, United StatesHQ checked Sep 5, 2026	201-500	444 contacts →
	Partial evidence “Kosmos Energy is a leading deepwater exploration and production company with assets in proven basins offshore Ghana, Equatorial Guinea and the U.S.” Source: RevenueBase Database · checked Sep 5, 2026
14	Cactus Drilling CO	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 5, 2026	1,001-5,000	440 contacts →
	Indirect evidence “As the largest privately-held domestic land drilling contractor in the United States, Cactus provides competent, motivated personnel utilizing premium equipment to meet and exceed…” Source: RevenueBase Database · checked Sep 5, 2026
15	Enervest, LTD	Indirect evidence	Houston, TX, United StatesHQ checked Sep 5, 2026	201-500	424 contacts →
	Indirect evidence “EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: RevenueBase Database · checked Sep 5, 2026
16	Performance Energy Services, LLC	Partial evidence	Houma, LA, United StatesHQ checked Sep 5, 2026	501-1,000	305 contacts →
	Partial 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 5, 2026
17	Nabors Drilling USA	Indirect evidence	Pocola, OK, United StatesHQ checked Sep 5, 2026	201-500	295 contacts →
	Indirect evidence “NABORS DRILLING USA is an oil & energy company based out of 1803 N GRAY ST, POCOLA, Oklahoma, United States.” Source: RevenueBase Database · checked Sep 5, 2026
18	Crosby Energy Services	Indirect evidence	Cut Off, LA, United StatesHQ checked Sep 5, 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 5, 2026
19	Offshore Inland Marine & Oilfield Services, INC	Partial evidence	Pensacola, FL, United StatesHQ checked Sep 5, 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 5, 2026
20	Reservoir Group	Indirect evidence	Stafford, TX, United StatesHQ checked Sep 5, 2026	201-500	178 contacts →
	Indirect evidence “Reservoir Group is a world-class niche oilfield services company that has been addressing customer challenges for more than 70 years.” Source: RevenueBase Database · checked Sep 5, 2026
21	Otto Candies, LLC	Partial evidence	Des Allemands, LA, United StatesHQ checked Sep 5, 2026	201-500	158 contacts →
	Partial 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 5, 2026
22	Loadmaster Industries	Indirect evidence	Broussard, LA, United StatesHQ checked Sep 5, 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 5, 2026
23	Scandrill INC	Indirect evidence	Tyler, TX, United StatesHQ checked Sep 5, 2026	201-500	133 contacts →
	Indirect evidence “SCANDRILL, INC.” Source: RevenueBase Database · checked Sep 5, 2026
24	Petrolog Group	Indirect evidence	Houston, United StatesHQ checked Sep 5, 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 5, 2026
25	Cantium	Indirect evidence	Covington, LA, United StatesHQ checked Sep 5, 2026	51-200	130 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 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 operators. 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 operators.
Partial evidence: Its own public description names part of offshore platform operators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name offshore platform operators. 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 358 offshore platform operators based in the United States

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Offshore platform operators based in the United States at a glance

As of Sep 5, 2026

14.9%Verified-email coverage

23.7%Mobile-number coverage

133.9Average contacts per company

11-50Median size (employees)

26.3%Largest-city concentration · Houston

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

120

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails on this list were verified

Email last verified

6,6080–30

45531–60

261–90

190–180

80180+

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 operators, 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 “offshore platform operators”. 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 operators), 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 operators, 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, 7,146 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.

Offshore platform operators by metro

Offshore platform operators in Houston94

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 operators, 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 operators are there based in the United States?

RevenueBase identified 358 offshore platform operators 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?

Nabors Industries, headquartered in Houston, tops this list with the largest team on record.

Which city has the most offshore platform operators?

Houston leads with 94 headquartered companies, followed by Odessa (10) and Midland (9).

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 7,146 verified decision-maker contacts tracked across these 358 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 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.