Company lists · Data refreshed November 2026

Top 21 Well test and monitoring instrument suppliers based in Houston, United States

RevenueBase identified 57 company matches for well test and monitoring instrument suppliers associated with Houston, United States as of November 2026 and tracks 2,292 professional contacts across them, including 494 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers company matches for well test and monitoring instrument suppliers 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 3, 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 3, 2026 How this list was built
57Companies
2,292Contacts tracked
494Verified emails
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The 21 largest well test and monitoring instrument suppliers based in Houston, United States

Ranked by team size
Top 21 of 57 company matches for well test and monitoring instrument suppliers based in Houston, United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Nov 3, 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 3, 2026201-500459 contacts →

Exact match

“Dresser Utility Solutions (formerly Dresser, Inc.) is a leading provider of measurement, instrumentation, piping solutions and over pressure protection devices to the natural gas…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
2Exact matchHouston, TX, United StatesHQ recorded Nov 3, 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 3, 2026 · View company records in RevenueBase
3Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-500182 contacts →

Exact match

“Boasting three core businesses – Measurement Products & Accessories, Terminal Management & Automation, and Metering Systems - Guidant is the leader in liquids custody transfer…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
4Exact matchHouston, TX, United StatesHQ recorded Nov 3, 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 3, 2026 · View company records in RevenueBase
5Exact matchHouston, United StatesHQ recorded Nov 3, 202651-200128 contacts →

Exact match

“Founded in 1980, Agar Corporation is a family owned operated business and a leading pioneer of process measurement and control systems and services within the energy sector.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
6Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-50079 contacts →

Exact match

“With a century of experience, Daniel is the only manufacturer that has the knowledge and expertise to engineer and offer superior products that provide the most reliable and…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
7Exact matchHouston, TX, United StatesHQ recorded Nov 3, 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 3, 2026 · View company records in RevenueBase
8Exact matchHouston, TX, United StatesHQ recorded Nov 3, 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 3, 2026 · View company records in RevenueBase
9Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-5025 contacts →

Exact match

“Ziebel is a unique technology company focused on providing high value measurements to oil and gas companies, allowing them to improve reservoir recovery factors.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
10Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202651-20017 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
11Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-5014 contacts →

Exact match

“Grace Instrument Company is a manufacturer of analytical instruments, such as viscometers, rheometers, and core flood testers that are primarily used by oil and gas companies and…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
12Exact matchHouston, TX, United StatesHQ recorded Nov 3, 20261-1013 contacts →

Exact match

“Seahorse Energy is a Seahorse Technologies, Inc.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
13Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-5012 contacts →

Exact match

“In the early 1990s, HDI Instruments, LLC was encouraged by leading oil and gas operators to develop a safe, accurate replacement for the inaccurate, hydraulic pressure gauges seen…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
14Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-5012 contacts →

Exact match

“Houston Oil Metering and Enterprise, LLC – HOME was formed in 2015 with main attention focus on servicing the needs and challenges of both upstream and downstream oil and gas…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
15Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-509 contacts →

Exact match

“L-K Industries: Setting the standard in the manufacturing of high quality products for the TIC industry since 1930 LK Industries is a Houston based manufacturer of high-quality…”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
16Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-508 contacts →

Exact match

“TGCI is a product and service provider to a wide range of industries.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
17Exact matchHouston, TX, United StatesHQ recorded Nov 3, 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 3, 2026 · View company records in RevenueBase
18Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-506 contacts →

Exact match

“Since 1983, we have been setting the global standard in innovative equipment for downhole tool service and testing.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
19Exact matchHouston, TX, United StatesHQ recorded Nov 3, 20261-104 contacts →

Exact match

Recorded description not available.

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
20Exact matchHouston, TX, United StatesHQ recorded Nov 3, 202611-503 contacts →

Exact match

“Process Solutions is the operating unit with PAC focused on process analytics, instrumentation, and solutions.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase
21Exact matchHouston, TX, United StatesHQ recorded Nov 3, 2026201-5002 contacts →

Exact match

“SPY has been a leading brand of coating inspection, jeep meter (high voltage meters) and pig tracking equipment serving the oil and gas industry for over 70 years.”

Recorded in the RevenueBase company graph · Nov 3, 2026 · View company records in RevenueBase

Showing 21 of 57 well test and monitoring instrument suppliers based in Houston, United States

See the full list, filter by size, metro and specialty, and access 494 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Well test and monitoring instrument suppliers based in Houston, United States at a glance

As of Nov 3, 2026
21.6%Verified-email coverage
40.2Average contacts per company
11-50Median size (employees)
Nov 3, 2026Page data refreshed

Companies by employee count

1-10
15
11-50
22
51-200
11
201-500
6
501-1,000
2

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 57 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 “well test and monitoring instrument suppliers” 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 494 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 3, 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 test and monitoring instrument suppliers”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many well test and monitoring instrument suppliers are there based in Houston, United States?

RevenueBase identified 57 company matches for well test and monitoring instrument suppliers 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?

Dresser, INC 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 well test and monitoring instrument suppliers?

Houston leads the United States with 57 company records, followed by Midland (12) and Odessa (11).

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 494 professional contacts with verified work emails tracked across these 57 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 3, 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.