Company lists · Data refreshed September 2026

Top 25 Offshore platform operators based in Houston, United States

RevenueBase identified 109 offshore platform operators headquartered in Houston, United States as of September 2026 and tracks 38,630 professional contacts across them, including 7,408 with verified work emails and 7,958 with mobile numbers. Houston is the largest hub.

This list covers offshore platform operators 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
109Companies
38,630Contacts tracked
7,408Verified emails
7,958Mobile numbers
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The 25 largest offshore platform operators based in Houston, United States

Ranked by team size
Top 25 of 109 offshore platform operators 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 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.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 202610001+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
2Partial evidenceHouston, TX, United StatesHQ checked Sep 13, 20265,001-10,0005,601 contacts →

Partial evidence

“Noble is a leading offshore drilling contractor for the oil and gas industry.”

Source: RevenueBase Database · checked Sep 13, 2026
3Strong evidenceHouston, TX, United StatesHQ checked Sep 13, 20265,001-10,0003,290 contacts →

Strong evidence

“Tidewater Inc.(Tidewater) is the owner and operator of the world’s largest Offshore Support Vessel (OSV) fleet.”

Source: RevenueBase Database · checked Sep 13, 2026
4Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 20265,001-10,0003,173 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
5Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 20265,001-10,0002,215 contacts →

Indirect evidence

“Oil States International, Inc.”

Source: RevenueBase Database · checked Sep 13, 2026
6Partial evidenceHouston, TX, United StatesHQ checked Sep 13, 20261,001-5,0001,706 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
7Partial evidenceHouston, TX, United StatesHQ checked Sep 13, 20261,001-5,0001,387 contacts →

Partial evidence

“Dril-Quip is part of Innovex, a unique energy industrial platform.”

Source: RevenueBase Database · checked Sep 13, 2026
8Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 20261,001-5,0001,262 contacts →

Indirect evidence

“FET (Forum Energy Technologies, Inc.) is a global company, serving the crude oil, natural gas, and renewable energy industries.”

Source: RevenueBase Database · checked Sep 13, 2026
9Partial evidenceHouston, TX, United StatesHQ checked Sep 13, 20261,001-5,000857 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 13, 2026
10Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 2026201-500685 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 13, 2026
11Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 2026501-1,000639 contacts →

Indirect evidence

“Atwood Oceanics, Inc.”

Source: RevenueBase Database · checked Sep 13, 2026
12Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 20261,001-5,000635 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
13Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 2026501-1,000538 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
14Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 2026201-500424 contacts →

Indirect evidence

“EnerVest is a top-tier, low-cost oil and natural gas operating company.”

Source: RevenueBase Database · checked Sep 13, 2026
15Partial evidenceHouston, TX, United StatesHQ checked Sep 13, 2026501-1,000185 contacts →

Partial evidence

“The People Company" Enterprise Offshore Drilling was formed in January of 2017 - A privately owned limited liability company with headquarters in Houston, TX.”

Source: RevenueBase Database · checked Sep 13, 2026
16Indirect evidenceHouston, United StatesHQ checked Sep 13, 2026501-1,000131 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
17Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 202651-200116 contacts →

Indirect evidence

“Cobalt International Energy, Inc.”

Source: RevenueBase Database · checked Sep 13, 2026
18Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 202611-50101 contacts →

Indirect evidence

“Deep Sea Development Services Inc.(DSDS) is a Houston-based service company focused on subsea and deepwater development projects The company was formed in 1996 to meet the need…”

Source: RevenueBase Database · checked Sep 13, 2026
19Partial evidenceHouston, TX, United StatesHQ checked Sep 13, 202651-20079 contacts →

Partial evidence

“Drillmec is an international leader in design, manufacturing, and distribution of drilling and workover rigs for onshore and offshore applications, as well as a wide range of…”

Source: RevenueBase Database · checked Sep 13, 2026
20Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 202611-5045 contacts →

Indirect evidence

“Oilfield Service Professionals, Inc.(OSP) is a top tier technology provider for all Products & Services related to Well Construction, Completions, Downhole Intervention Systems…”

Source: RevenueBase Database · checked Sep 13, 2026
21Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 2026501-1,00044 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 13, 2026
22Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 20261,001-5,00037 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 13, 2026
23Indirect evidenceHouston, United StatesHQ checked Sep 13, 202651-20035 contacts →

Indirect evidence

“Provide equipment and services to Oil & Gas related companies with main emphasis on drilling companies.”

Source: RevenueBase Database · checked Sep 13, 2026
24Indirect evidenceHouston, TX, United StatesHQ checked Sep 13, 2026201-50034 contacts →

Indirect evidence

“NORAM DRILLING COMPANY is an oil & energy company based out of Houston, TX and located at 8400 N Sam Houston Pkwy W, Suite 120, Houston, Texas, 77064, United States.”

Source: RevenueBase Database · checked Sep 13, 2026
25Partial evidenceHouston, TX, United StatesHQ checked Sep 13, 202651-20032 contacts →

Partial evidence

“Since our inception in 2007, the company has focused primarily on development drilling from fixed platforms, TLPs, SPARs and compliant towers.”

Source: RevenueBase Database · checked Sep 13, 2026

Showing 25 of 109 offshore platform operators based in Houston, United States

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Offshore platform operators based in Houston, United States at a glance

As of Sep 13, 2026
19.2%Verified-email coverage
20.6%Mobile-number coverage
354.4Average contacts per company
51-200Median size (employees)
86.2%Largest-city concentration · Houston
Sep 13, 2026Page data refreshed

Companies by employee count

1-10
19
11-50
35
51-200
21
201-500
7
501-1,000
9
1,001-5,000
12
5,001-10,000
5
10001+
1

Freshness & accuracy

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

Email last verified

Median 15.0d

Company record updated

Median 78.0d

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 Houston, 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 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, 7,408 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 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 operators by metro in the United States

  • 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 Houston, United States?

RevenueBase identified 109 offshore platform operators 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?

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 7,408 verified decision-maker contacts tracked across these 109 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.