Company lists · Data refreshed November 2026

Top 25 Well testing equipment providers based in the United States

RevenueBase identified 765 company matches for well testing equipment providers associated with the United States as of November 2026 and tracks 28,928 professional contacts across them, including 6,848 with verified work emails. Houston is the largest hub.

This list covers company matches for well testing equipment providers 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 November 6, 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 Nov 6, 2026 How this list was built
765Companies
28,928Contacts tracked
6,848Verified emails
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The 25 largest well testing equipment providers based in the United States

Ranked by team size
Top 25 of 765 company matches for well testing equipment providers based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 6, 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 Nov 6, 20261,001-5,0002,119 contacts →

Exact match

“For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20265,001-10,0001,831 contacts →

Exact match

“Oil States International, Inc.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
3Exact matchFort Worth, TX, United StatesHQ recorded Nov 6, 2026n/a1,738 contacts →

Exact match

“Caterpillar Inc.(NYSE:CAT) has completed its acquisition of the Oil & Gas Division (“Weir Oil & Gas”) of the Weir Group PLC, a Scotland-based global engineering business.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,0001,223 contacts →

Exact match

“Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
5Exact matchCharlotte, NC, United StatesHQ recorded Nov 6, 20261,001-5,000972 contacts →

Exact match

“Your "FULL-LIFECYCLE" Partner for Sustainable Flow Technology Solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
6Exact matchHumble, TX, United StatesHQ recorded Nov 6, 20261,001-5,000912 contacts →

Exact match

“Innovex International, Inc (NYSE: INVX) is a Houston-based company established in 2024 following the merger of Dril-Quip, Inc and Innovex Downhole Solutions.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,000826 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 · Nov 6, 2026 · View company records in RevenueBase
8Exact matchAlice, TX, United StatesHQ recorded Nov 6, 20261,001-5,000673 contacts →

Exact match

“FESCO is a diversified energy services company providing quality equipment and experienced personnel since 1949.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000384 contacts →

Exact match

“Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
10Exact matchHouston, ND, United StatesHQ recorded Nov 6, 20261,001-5,000351 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500311 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 · Nov 6, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500296 contacts →

Exact match

“Since 2003, Premium Oilfield Technologies has been supplying high quality products to the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026201-500295 contacts →

Exact match

“Greene’s Energy Group offers a range of support services and products to the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
14Exact matchAustin, TX, United StatesHQ recorded Nov 6, 2026201-500241 contacts →

Exact match

“Tanknology is the world's largest provider of tank testing and environmental compliance services for petroleum systems.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000234 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 · Nov 6, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Nov 6, 2026501-1,000206 contacts →

Exact match

“Getting it done right.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
17Exact matchThe Woodlands, TX, United StatesHQ recorded Nov 6, 2026201-500203 contacts →

Exact match

“Are you looking to maximize production and minimize spend throughout the lifecycle of your well?”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
18Exact matchLevelland, TX, United StatesHQ recorded Nov 6, 2026501-1,000202 contacts →

Exact match

“Founded in 1980, Butch's has been leading the pack as the premier service provider for the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
19Exact matchMesquite, TX, United StatesHQ recorded Nov 6, 2026201-500184 contacts →

Exact match

“Founded in 1956, Fritz Industries is an employee owned company that has grown into an international research and manufacturing company serving oilfield customers worldwide.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
20Exact matchSugar Land, United StatesHQ recorded Nov 6, 2026201-500177 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
21Exact matchLafayette, LA, United StatesHQ recorded Nov 6, 2026201-500169 contacts →

Exact match

“FDF Energy Services has been providing world class customer service to the Oil and Gas Industry for over forty years.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
22Exact matchStrongsville, OH, United StatesHQ recorded Nov 6, 2026201-500159 contacts →

Exact match

“Clark-Reliance® continues to be the global leader in the level indication and control, sightflow indication, and filtration and separation industries.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
23Exact matchOklahoma City, OK, United StatesHQ recorded Nov 6, 2026201-500155 contacts →

Exact match

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

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Nov 6, 20261,001-5,000154 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase
25Exact matchCatoosa, OK, United StatesHQ recorded Nov 6, 2026201-500150 contacts →

Exact match

“SERVA develops specialized gas and oilfield equipment to offer reliable, safe and efficient products for global energy development.”

Recorded in the RevenueBase company graph · Nov 6, 2026 · View company records in RevenueBase

Showing 25 of 765 well testing equipment providers based in the United States

See the full list, filter by size, metro and specialty, and access 6,848 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Well testing equipment providers based in the United States at a glance

As of Nov 6, 2026
23.7%Verified-email coverage
37.8Average contacts per company
11-50Median size (employees)
16.2%Largest-city concentration · Houston
Nov 6, 2026Page data refreshed

Companies by employee count

1-10
223
11-50
272
51-200
179
201-500
63
501-1,000
8
1,001-5,000
16
5,001-10,000
1

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 765 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 “well testing equipment providers” 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 6,848 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 November 6, 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 “well testing equipment providers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many well testing equipment providers are there based in the United States?

RevenueBase identified 765 company matches for well testing equipment providers associated with the United States as of November 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?

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

Which city has the most well testing equipment providers?

Houston leads with 124 company records, followed by Midland (44) and Odessa (33).

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 6,848 professional contacts with verified work emails tracked across these 765 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 November 6, 2026.

Ready to reach these companies? Verified emails and direct dials for all 765 well testing equipment providers based in the United States. Start with a free account, no credit card.

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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.