Company lists · Data refreshed November 2026

Top 24 Oil and gas testing laboratories based in Houston, United States

RevenueBase identified 70 company matches for oil and gas testing laboratories associated with Houston, United States as of November 2026 and tracks 2,324 professional contacts across them, including 581 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for oil and gas testing laboratories associated with Houston, 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 4, 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 4, 2026 How this list was built
70Companies
2,324Contacts tracked
581Verified emails
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The 24 largest oil and gas testing laboratories based in Houston, United States

Ranked by team size
Top 24 of 70 company matches for oil and gas testing laboratories based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 4, 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 4, 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 4, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-200231 contacts →

Exact match

“The Viswa Group was established in 1991 and we are currently serving over 600 customers and ships a year.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Nov 4, 2026n/a163 contacts →

Exact match

“RohmTek is an analytical laboratory support company providing instrument rental, instrument optimization, and analytical laboratory services to the energy industry and beyond.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-200131 contacts →

Exact match

“Eagle Analytical is an FDA- and DEA-registered, A2LA ISO 17025-accredited laboratory that provides analytical chemistry, microbiological testing, consulting, and technical…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
5Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-20094 contacts →

Exact match

“Bridging the gap between geology and engineering.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-20089 contacts →

Exact match

“JP services is the leading provider asset integrity solutions for new and certification projects in the Midstream, Downstream, and Industrial end markets Our Enterprise Offering…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-20078 contacts →

Exact match

“Coastal Flow is the industry-leading liquid and gas measurement company, providing quality measurement services since 1974.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-20070 contacts →

Exact match

“Texas OilTech Laboratories, is committed to remaining a world-class petroleum testing laboratory for the analysis of fuels, lubricants, petrochemical, and environmental materials.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5046 contacts →

Exact match

“V-TIC Services is a startup company focused on providing Quality to industries worldwide.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-20045 contacts →

Exact match

“A&B Environmental Services, Inc.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5031 contacts →

Exact match

“Aviation Laboratories (AvLab) provides state of the art laboratory testing services and products to the aviation industry.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5029 contacts →

Exact match

“Intertek Westport Technology Center is an independent technical services organization, providing the energy industry with high quality exploration and production, waste disposal…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5029 contacts →

Exact match

“For over 30 years KAM CONTROLS has served the oil & petroleum industry with measurement solutions for oil water detection, water-cut measurement, custody transfer, tank…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-20020 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5019 contacts →

Exact match

“ResMetrics helps operators better understand completion performance by connecting completion data, diagnostics, and insights to more confident decisions across the entire program.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5018 contacts →

Exact match

“Ellington Geological Services is a team of highly-trained and dedicated professionals and technicians, that truly understand the importance of the data contained in rocks and the…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5017 contacts →

Exact match

“ODSI is a consulting company to the oil and gas industry.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5017 contacts →

Exact match

“Recognized throughout the oil and gas industry for consulting expertise in materials, fabrication, and engineering, Microalloying focuses on critical pipelines, both onshore and…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5015 contacts →

Exact match

“PTS Labs is a leading provider of Core Analysis and Geotechnical Services for the Oil and Gas Industry.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5012 contacts →

Exact match

“Envirodyne Laboratories, Inc.(ELI) is a full-service, NELAP-accredited and TCEQ approved drinking water environmental laboratory dedicated to the drinking water and wastewater…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202611-5010 contacts →

Exact match

“WH Labs (Whitehouse Laboratories) is an ISO 9001:2015, ISO/IEC 17025:2017, and AWS Accredited independent testing and analysis laboratory based in Houston, Texas, with ASME U&R…”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
22Exact matchHouston, TX, United StatesHQ recorded Nov 4, 20261-107 contacts →

Exact match

“DVZ Hydraulics is a family owned and operated Houston based company focused mainly on the Subsea Oil & Gas industry.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
23Exact matchHouston, TX, United StatesHQ recorded Nov 4, 202651-2007 contacts →

Exact match

“As a leader in comprehensive oil, fuel, coolant, metalworking and consulting services, ALS is committed to providing unmatched services with cost-effective quality results.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase
24Exact matchHouston, TX, United StatesHQ recorded Nov 4, 20261-106 contacts →

Exact match

“At TEXPETROL was born to serve the oil and gas market, onshore and offshore.”

Recorded in the RevenueBase company graph · Nov 4, 2026 · View company records in RevenueBase

Showing 24 of 70 oil and gas testing laboratories based in Houston, United States

See the full list, filter by size, metro and specialty, and access 581 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oil and gas testing laboratories based in Houston, United States at a glance

As of Nov 4, 2026
25.0%Verified-email coverage
33.2Average contacts per company
11-50Median size (employees)
Nov 4, 2026Page data refreshed

Companies by employee count

1-10
22
11-50
28
51-200
14
201-500
3
501-1,000
2
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 70 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 Houston, United States whose business descriptions match “oil and gas testing laboratories” 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 581 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 4, 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 “oil and gas testing laboratories”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oil and gas testing laboratories are there based in Houston, United States?

RevenueBase identified 70 company matches for oil and gas testing laboratories associated with Houston, 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?

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

Which city in the United States has the most oil and gas testing laboratories?

Houston leads the United States with 70 company records, followed by Midland (19) and Odessa (14).

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 581 professional contacts with verified work emails tracked across these 70 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 4, 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.