Company lists · Data refreshed September 2026

Top 25 Subsea consulting firms based in the United States

RevenueBase identified 973 company matches for subsea consulting firms associated with the United States as of September 2026 and tracks 27,906 professional contacts across them, including 7,214 with verified work emails. Houston is the largest hub.

This list covers company matches for subsea consulting firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 29, 2026 How this list was built
973Companies
27,906Contacts tracked
7,214Verified emails
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The 25 largest subsea consulting firms based in the United States

Ranked by team size
Top 25 of 973 company matches for subsea consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 29, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#CompanyRevenueBase SmartSearchHeadquartersEmployeesContacts
1Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20265,001-10,0006,466 contacts →

Exact match

“Long recognized for extraordinary performance, superb safety and long-standing partnerships, and now incorporating Frank’s International, Expro is focused on enabling our…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,0001,706 contacts →

Exact match

“Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Sep 29, 20261,001-5,0001,046 contacts →

Exact match

“At Gulf Companies, we are driven by our mission to serve a vital role in the global energy industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Sep 29, 2026n/a789 contacts →

Exact match

“Energo Engineering is a KBR Company that provides the full package of structural integrity management (SIM) and advanced structural engineering services for offshore floating and…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
5Exact matchMetairie, LA, United StatesHQ recorded Sep 29, 2026501-1,000700 contacts →

Exact match

“EDG Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
6Exact matchSulphur, LA, United StatesHQ recorded Sep 29, 2026501-1,000420 contacts →

Exact match

“ReCon was established in 1995 and has matured as a high quality and competitive engineering consulting firm providing engineering design and project management services to the…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
7Exact matchHouma, LA, United StatesHQ recorded Sep 29, 2026501-1,000305 contacts →

Exact match

“Performance Energy Services, a Danos company, was formed in to deliver safe, client-focused support to the onshore and offshore energy markets.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Sep 29, 2026201-500259 contacts →

Exact match

“Trendsetter is a global provider of specialized subsea solutions to the oil and gas industry's toughest challenges.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
9Exact matchSpring, TX, United StatesHQ recorded Sep 29, 2026201-500253 contacts →

Exact match

“For more than 40 years, M&H has been a trusted source for oil & gas consulting services that maximize value for clients.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200250 contacts →

Exact match

“CTS - Complete Technical Services, Inc.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
11Exact matchEssex, CT, United StatesHQ recorded Sep 29, 2026201-500190 contacts →

Exact match

“Since 1969, Underwater Construction Corporation (UCC) has been a leading provider of underwater services to commercial and government facilities.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
12Exact matchMetairie, LA, United StatesHQ recorded Sep 29, 2026201-500185 contacts →

Exact match

“Project Consulting Services®, Inc.(PCS) provides consulting and engineering expertise to the energy infrastructure industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200181 contacts →

Exact match

“Zentech, Inc, an engineering consulting and software development company, headquartered in Houston, TX, is comprised of experienced professionals specializing in providing…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
14Exact matchMiami, FL, United StatesHQ recorded Sep 29, 2026201-500176 contacts →

Exact match

“Welcome to Subsea Global Solutions where EVERY DAY our goal is to deliver unrivaled service.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
15Exact matchBroussard, LA, United StatesHQ recorded Sep 29, 2026201-500175 contacts →

Exact match

“Aqueos is a 'World Class Subsea Service Provider℠' with our core values being a commitment to “excellence” and our dedication to an “accident-free” workplace.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
16Exact matchLargo, United StatesHQ recorded Sep 29, 2026201-500170 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200166 contacts →

Exact match

“Deepsea Technologies, Inc.(DTI) Engineers and Manufactures a wide range of products and equipment used in subsea oil & gas field development projects.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200155 contacts →

Exact match

“PRT Offshore, an Expro company, provides high-quality oilfield rental equipment and services for the global offshore industry.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 29, 2026201-500147 contacts →

Exact match

“PPI Quality & Engineering, a member of the Kiwa group of companies, saves its clients millions by providing economic solutions for complicated projects for the renewable energy…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
20Exact matchPlano, TX, United StatesHQ recorded Sep 29, 202651-200134 contacts →

Exact match

“PetroTel is recognized worldwide as an industry leader in enhanced oil recovery, reservoir characterization and simulation, coalbed methane, production, and exploration…”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
21Exact matchHouston, United StatesHQ recorded Sep 29, 2026501-1,000131 contacts →

Exact match

“Petrolog brings energy to the world as an integrated provider of solutions for the entire oil and gas lifecycle.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Sep 29, 202651-200124 contacts →

Exact match

“PERC Engineering is a full-service engineering & project management firm in the oil & gas energy sector.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
23Exact matchTyler, TX, United StatesHQ recorded Sep 29, 202651-200122 contacts →

Exact match

“Welcome to SDS Petroleum Consultants company page In Scott Stovall founded SDS Petroleum Consultants L.L.C.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
24Exact matchCentennial, CO, United StatesHQ recorded Sep 29, 202651-200121 contacts →

Exact match

“Halker Consulting provides custom engineered and configured services in Project Assessment and Planning, Engineering and Design, & Consulting and Implementation Guidance.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Sep 29, 2026201-500118 contacts →

Exact match

“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.”

Recorded in the RevenueBase company graph · Sep 29, 2026 · View company records in RevenueBase

Showing 25 of 973 subsea consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 7,214 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Subsea consulting firms based in the United States at a glance

As of Sep 29, 2026
25.9%Verified-email coverage
28.7Average contacts per company
1-10Median size (employees)
28.0%Largest-city concentration · Houston
Sep 29, 2026Page data refreshed

Companies by employee count

1-10
509
11-50
301
51-200
109
201-500
30
501-1,000
9
1,001-5,000
8
5,001-10,000
2
10001+
4

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 973 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies
Company records associated with the United States whose business descriptions match “subsea consulting firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch
Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview
The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality
RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 7,214 professional contacts with verified work emails across the full matched dataset. 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 29, 2026. Lists refresh periodically as the graph is re-checked.
Record context
Company records and descriptions can change. Check the company's website for its current services and locations.

Subsea consulting firms by metro

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “subsea consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea consulting firms are there based in the United States?

RevenueBase identified 973 company matches for subsea consulting firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

EXPRO tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most subsea consulting firms?

Houston leads with 272 company records, followed by Katy (19) and Denver (18).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 7,214 professional contacts with verified work emails tracked across these 973 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 29, 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 SmartSearch, 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.