Company lists · Data refreshed October 2026

Top 25 Downhole fluid engineering services worldwide

RevenueBase identified 1,525 company matches for downhole fluid engineering services worldwide as of October 2026 and tracks 41,183 professional contacts across them, including 8,593 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for downhole fluid engineering services worldwide, 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 October 24, 2026. Country and city lists for downhole fluid engineering services follow the table.

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 Oct 24, 2026 How this list was built
1,525Companies
41,183Contacts tracked
8,593Verified emails
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The 25 largest downhole fluid engineering services worldwide

Ranked by team size
Top 25 of 1,525 company matches for downhole fluid engineering services worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 24, 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 matchDubai, United Arab EmiratesHQ recorded Oct 24, 20261,001-5,0001,697 contacts →

Exact match

“Every year, drilling teams make decisions worth millions of dollars on incomplete information.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
2Exact matchThe Woodlands, TX, United StatesHQ recorded Oct 24, 20261,001-5,0001,329 contacts →

Exact match

“Cudd offers a broad range of technical and specialized oilfield services to companies engaged in the exploration and production of oil and natural gas worldwide.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
3Exact matchKaty, TX, United StatesHQ recorded Oct 24, 20261,001-5,0001,274 contacts →

Exact match

“Newpark Fluids Systems is the world’s leading pure-play oil & gas and geothermal fluid solutions provider.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
4Exact matchMuscat, OmanHQ recorded Oct 24, 20261,001-5,0001,274 contacts →

Exact match

“Abraj Energy Services ("Abraj"), was founded in May 2006 and has taken major strides.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
5Exact matchOslo, NorwayHQ recorded Oct 24, 2026501-1,000813 contacts →

Exact match

“AGR – an Aqualis company – is a multidisciplinary consultancy, specialising in drilling & wells, subsurface, marine and subsea solutions, resourcing, technical safety and software…”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
6Exact matchFort Worth, TX, United StatesHQ recorded Oct 24, 20261,001-5,000750 contacts →

Exact match

“When you’re in the oilfield, you need a name you can trust.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Oct 24, 20261,001-5,000742 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 · Oct 24, 2026 · View company records in RevenueBase
8Exact matchEast Ahmadi, KuwaitHQ recorded Oct 24, 20261,001-5,000732 contacts →

Exact match

“KUWAIT DRILLING CO.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
9Exact matchUsa, United KingdomHQ recorded Oct 24, 2026501-1,000700 contacts →

Exact match

“Delta Corporation specializes in the design and manufacture of API-compliant wellhead equipment and pressure control systems for both onshore and offshore oil and gas operations.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
10Exact matchCairo, EgyptHQ recorded Oct 24, 2026501-1,000664 contacts →

Exact match

“EMEC is a regional oil and gas services company built on more than four decades of operational experience, regional insight, and deep technical expertise.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Oct 24, 20261,001-5,000627 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 · Oct 24, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Oct 24, 2026501-1,000547 contacts →

Exact match

“CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
13Exact matchDubai, AB, United Arab EmiratesHQ recorded Oct 24, 20261,001-5,000546 contacts →

Exact match

“Levare International Limited is a vertically integrated engineering, manufacturing, and service company headquartered in the DIFC, UAE, designing, manufacturing, and servicing…”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Oct 24, 20261,001-5,000506 contacts →

Exact match

“Ranger is one of the largest providers of high specification mobile rig well services, cased hole wireline services, and ancillary services in the U.S.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
15Exact matchNewcastle, OK, United StatesHQ recorded Oct 24, 2026501-1,000445 contacts →

Exact match

“Only Thru Tubing Solutions offers the specialized downhole equipment and services to deliver the results you need, right when you need them.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
16Exact match9001 St. Gallen, SwitzerlandHQ recorded Oct 24, 2026201-500429 contacts →

Exact match

“Geoquip Marine is a geotechnical data acquisition company safely delivering offshore geotechnical site investigations and engineering services to clients worldwide.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
17Exact matchTulsa, OK, United StatesHQ recorded Oct 24, 2026501-1,000426 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 · Oct 24, 2026 · View company records in RevenueBase
18Exact matchTehran, IranHQ recorded Oct 24, 20261,001-5,000404 contacts →

Exact match

“North Drilling, a leading company in oil and gas well drilling, has worked out important strategies in line with its vision plan.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Oct 24, 2026501-1,000373 contacts →

Exact match

“AES Drilling Fluids is prepared to successfully deliver on any challenging project from the well site to the customer's office.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Oct 24, 2026201-500345 contacts →

Exact match

“ADA is a global energy services company specializing in advanced drilling solutions for oil, gas, and geothermal applications.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Oct 24, 2026201-500305 contacts →

Exact match

“Since our founding in 2006, NCS Multistage has grown to be a leading provider of engineered products and support services for oil and natural gas wells around the world.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Oct 24, 2026201-500288 contacts →

Exact match

“Strength.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
23Exact matchEdmonton, AB, CanadaHQ recorded Oct 24, 202651-200288 contacts →

Exact match

“We deliver reliable, high-performance drilling & completion equipment, expert engineering support & responsive service to customers in 100+ countries.”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
24Exact matchUnited StatesHQ recorded Oct 24, 20261,001-5,000284 contacts →

Exact match

“China National Logging Corporation (CNLC), a subsidiary of CNPC Services & Engineering Ltd, solely on behalf of CNPC providing well bore technical services in international…”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase
25Exact matchHouston, TX, United StatesHQ recorded Oct 24, 2026201-500283 contacts →

Exact match

“NOV™ IntelliServ® provides the oil and gas industry with broadband networked drillstrings and along-string evaluation that enables downhole conditions to be measured, evaluated…”

Recorded in the RevenueBase company graph · Oct 24, 2026 · View company records in RevenueBase

Showing 25 of 1,525 downhole fluid engineering services worldwide

See the full list, filter by size, metro and specialty, and access 8,593 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Downhole fluid engineering services worldwide at a glance

As of Oct 24, 2026
20.9%Verified-email coverage
27.0Average contacts per company
11-50Median size (employees)
7.4%Largest-city concentration · Houston
Oct 24, 2026Page data refreshed

Companies by employee count

1-10
517
11-50
556
51-200
286
201-500
98
501-1,000
37
1,001-5,000
20
5,001-10,000
5
10001+
1

Email recency is reported on each country list linked below.

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.
Coverage
Every country. Country and city lists for downhole fluid engineering services are linked below.
What qualifies
Company records worldwide whose business descriptions match “downhole fluid engineering services” 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. 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 8,593 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 October 24, 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.

Downhole fluid engineering services by location

12 lists · largest first

Every Downhole fluid engineering services list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 “downhole fluid engineering services”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many downhole fluid engineering services are there worldwide?

RevenueBase identified 1,525 company matches for downhole fluid engineering services worldwide as of October 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?

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

Which country has the most downhole fluid engineering services?

The United States leads with 499 companies, followed by Canada (106) and the United Kingdom (85). Every downhole fluid engineering services list by country and city is linked on this page.

Which city has the most downhole fluid engineering services?

Houston leads with 113 company records, followed by Calgary (51) and Midland (44).

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 8,593 professional contacts with verified work emails tracked across these 1,525 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 October 24, 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.