Company lists · Data refreshed September 2026

Top 25 Subsea completion systems manufacturers based in the United States

RevenueBase identified 199 company matches for subsea completion systems manufacturers associated with the United States as of September 2026 and tracks 45,925 professional contacts across them, including 12,183 with verified work emails. Houston is the largest hub.

This list covers company matches for subsea completion systems manufacturers 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 18, 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 18, 2026 How this list was built
199Companies
45,925Contacts tracked
12,183Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest subsea completion systems manufacturers based in the United States

Ranked by team size
Top 25 of 199 company matches for subsea completion systems manufacturers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 18, 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 18, 202610001+12,031 contacts →

Exact match

“Oceaneering is a global technology company delivering engineered services and products and robotic solutions to the offshore energy, defense, aerospace, and manufacturing…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Sep 18, 202610001+6,543 contacts →

Exact match

“SLB OneSubsea is the world’s leading subsea technology and solutions provider, focused on accelerating innovation to improve subsea asset performance, while increasing energy…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Sep 18, 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 18, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Sep 18, 202610001+4,749 contacts →

Exact match

“FMC Technologies is now TechnipFMC.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Sep 18, 20265,001-10,0002,215 contacts →

Exact match

“Oil States International, Inc.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Sep 18, 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 18, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Sep 18, 20261,001-5,000712 contacts →

Exact match

“With a culture built on high performance and flawless execution, Nine Energy Service is a unique kind of oilfield services company, offering industry-shaping completion solutions…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Sep 18, 20261,001-5,000703 contacts →

Exact match

“Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Sep 18, 20261,001-5,000635 contacts →

Exact match

“Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
10Exact matchSugar Land, TX, United StatesHQ recorded Sep 18, 2026501-1,000438 contacts →

Exact match

“GR Energy Services is a completion solutions company committed to lowering oil and gas company operational risk and total cost of operations.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
11Exact matchTulsa, OK, United StatesHQ recorded Sep 18, 2026501-1,000432 contacts →

Exact match

“Summit ESP is a service of Halliburton that provides integrated Electric Submersible Pumping systems to enhance daily well production and total reservoir recovery.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Sep 18, 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 18, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Sep 18, 2026501-1,000212 contacts →

Exact match

“A leader in wellhead, pressure control, and production tree (Christmas Tree) equipment and service solutions, Vault PC also supports a top-tier completions division, supporting…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
14Exact matchMillsap, TX, United StatesHQ recorded Sep 18, 2026201-500183 contacts →

Exact match

“GEODynamics creates and delivers downhole solutions that enable unsurpassed oil and gas well economics, performance, and lifespan.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
15Exact matchSugar Land, United StatesHQ recorded Sep 18, 2026201-500168 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Sep 18, 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 18, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Sep 18, 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 18, 2026 · View company records in RevenueBase
18Exact matchOklahoma City, OK, United StatesHQ recorded Sep 18, 2026201-500154 contacts →

Exact match

“Downing is an American oilfield solutions provider specializing in pressure-control technologies.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Sep 18, 2026201-500150 contacts →

Exact match

“The WellBoss Company, wholly owned by SBO AG, designs and manufactures the industry's most reliable well completion technology, delivering unrivaled, data-driven performance and…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Sep 18, 202651-200138 contacts →

Exact match

“Since 1989 WWT International (WWT) has been developing unique products to help operators reach farther in drilling, completion and intervention worldwide.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Sep 18, 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 18, 2026 · View company records in RevenueBase
22Exact matchGodley, TX, United StatesHQ recorded Sep 18, 2026201-500115 contacts →

Exact match

“Owen Oil Tools, a division of Core Laboratories, is a global leader in downhole completion, perforating, and well abandonment solutions.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Sep 18, 202611-50101 contacts →

Exact match

“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…”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
24Exact matchGolden, CO, United StatesHQ recorded Sep 18, 202651-20081 contacts →

Exact match

“Well Master Corporation designs and manufactures artificial lift systems for the oil & natural gas industry.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Sep 18, 202651-20081 contacts →

Exact match

“DeepOcean is the leading, subsea services provider, servicing any equipment with specialized expertise.”

Recorded in the RevenueBase company graph · Sep 18, 2026 · View company records in RevenueBase

Showing 25 of 199 subsea completion systems manufacturers based in the United States

See the full list, filter by size, metro and specialty, and access 12,183 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Subsea completion systems manufacturers based in the United States at a glance

As of Sep 18, 2026
26.5%Verified-email coverage
230.8Average contacts per company
11-50Median size (employees)
40.2%Largest-city concentration · Houston
Sep 18, 2026Page data refreshed

Companies by employee count

1-10
52
11-50
67
51-200
45
201-500
17
501-1,000
5
1,001-5,000
7
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 199 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 completion systems manufacturers” 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 12,183 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 18, 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.

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 completion systems manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many subsea completion systems manufacturers are there based in the United States?

RevenueBase identified 199 company matches for subsea completion systems manufacturers 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?

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

Which city has the most subsea completion systems manufacturers?

Houston leads with 80 company records, followed by Lafayette (6) and Katy (5).

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 12,183 professional contacts with verified work emails tracked across these 199 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 18, 2026.

Ready to reach these companies? Verified emails and direct dials for all 199 subsea completion systems manufacturers based in the United States. Start with a free account, no credit card.

Download this list →

Related lists

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.