Company lists · Data refreshed September 2026

Top 25 Oil and gas instrumentation companies based in the United States

Name: Oil and gas instrumentation companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,629 companies tracked

RevenueBase identified 1,629 oil and gas instrumentation companies headquartered in the United States as of September 2026 and tracks 134,945 professional contacts across them, including 41,418 with verified work emails. Houston is the largest hub.

This list covers oil and gas instrumentation companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,629Companies

134,945Contacts tracked

41,418Verified emails

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The 25 largest oil and gas instrumentation companies based in the United States

Ranked by team size

Top 25 of 1,629 oil and gas instrumentation companies based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas instrumentation companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SLB	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	76,561 contacts →
	Indirect evidence “SLB is a global technology company that has driven energy innovation for more than a century.” Source: RevenueBase Database · checked Sep 17, 2026
2	OIL States International	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	2,215 contacts →
	Partial evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
3	Weir OIL And GAS	Strong evidence	Fort Worth, TX, United StatesHQ checked Sep 17, 2026	n/a	1,651 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
4	Englobal	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	1,183 contacts →
	Indirect evidence “Who We Are Englobal Founded in 1985, ENGlobal (NASDAQ: ENG) is a specialty engineering services firm that focuses on automation solutions and select EPCM projects for the energy…” Source: RevenueBase Database · checked Sep 17, 2026
5	Stewart & Stevenson	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,135 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
6	Celeros Flow Technology	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	928 contacts →
	Indirect evidence “Your "FULL-LIFECYCLE" Partner for Sustainable Flow Technology Solutions.” Source: RevenueBase Database · checked Sep 17, 2026
7	Honeywell Sundyne	Strong evidence	Arvada, CO, United StatesHQ checked Sep 17, 2026	501-1,000	778 contacts →
	Strong evidence “Honeywell Sundyne manufactures highly reliable engineered pumps and compressors for global companies in upstream and midstream oil and gas production, refining, petrochemical…” Source: RevenueBase Database · checked Sep 17, 2026
8	Worldwide Oilfield Machine	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	635 contacts →
	Indirect evidence “Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: RevenueBase Database · checked Sep 17, 2026
9	Omega Engineering	Indirect evidence	Norwalk, CT, United StatesHQ checked Sep 17, 2026	501-1,000	582 contacts →
	Indirect evidence “Omega sells more than products used to measure temperature and humidity, flow and level, and pressure.” Source: RevenueBase Database · checked Sep 17, 2026
10	Campbell Scientific	Indirect evidence	Logan, UT, United StatesHQ checked Sep 17, 2026	201-500	560 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
11	Dwyeromega	Partial evidence	Michigan City, IN, United StatesHQ checked Sep 17, 2026	1,001-5,000	557 contacts →
	Partial evidence “DwyerOmega is a trusted global leader in sensing, instrumentation, and process control solutions, supporting HVAC, industrial, manufacturing, and research applications where…” Source: RevenueBase Database · checked Sep 17, 2026
12	Cetco Energy Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	499 contacts →
	Strong evidence “CETCO Energy Services (CETCO) specializes in treating complex fluids for offshore oil and gas operators.” Source: RevenueBase Database · checked Sep 17, 2026
13	Dresser, INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	448 contacts →
	Strong evidence “Dresser Utility Solutions (formerly Dresser, Inc.) is a leading provider of measurement, instrumentation, piping solutions and over pressure protection devices to the natural gas…” Source: RevenueBase Database · checked Sep 17, 2026
14	Vega Americas, INC	Indirect evidence	Mason, OH, United StatesHQ checked Sep 17, 2026	201-500	432 contacts →
	Indirect evidence “For more than 70 years, VEGA Americas, Inc.” Source: RevenueBase Database · checked Sep 17, 2026
15	Ashcroft INC	Indirect evidence	Stratford, CT, United StatesHQ checked Sep 17, 2026	1,001-5,000	381 contacts →
	Indirect evidence “Ashcroft \| Industrial Measurement & Control Solutions For over 170 years, Ashcroft has been the trusted global resource for industrial measurement and control.” Source: RevenueBase Database · checked Sep 17, 2026
16	Cooper Machinery Services	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	372 contacts →
	Strong evidence “Cooper Machinery Services provides natural gas compression equipment and services to customers globally in the Oil & Gas, Power, Transportation, and Marine sectors.” Source: RevenueBase Database · checked Sep 17, 2026
17	Afglobal Corporation	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	311 contacts →
	Strong evidence “AFGlobal Corporation is an oil and gas OEM specializing in technology, products, and services with fully-integrated manufacturing capabilities to clients around the world.” Source: RevenueBase Database · checked Sep 17, 2026
18	NCS Multistage	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	301 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
19	Greene's Energy Group	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	285 contacts →
	Strong evidence “Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
20	Det-Tronics Detector Electronics, LLC	Partial evidence	Bloomington, MN, United StatesHQ checked Sep 17, 2026	201-500	265 contacts →
	Partial evidence “Det-Tronics is a global leader in fire and gas-safety systems.” Source: RevenueBase Database · checked Sep 17, 2026
21	Mogas, A Flowserve Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	252 contacts →
	Indirect evidence “MOGAS, A Flowserve Company, is the most trusted severe service technology company offering severe service valves, surface engineering / coating, modular process units, and…” Source: RevenueBase Database · checked Sep 17, 2026
22	Udelhoven	Partial evidence	Anchorage, AK, United StatesHQ checked Sep 17, 2026	201-500	233 contacts →
	Partial evidence “Udelhoven Company founded in 1970 is a privately held full service construction, operations and maintenance company offering diversified products and services from oil field…” Source: RevenueBase Database · checked Sep 17, 2026
23	Flogistix	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 17, 2026	201-500	232 contacts →
	Strong evidence “Flogistix by Flowco specializes in wellhead compression and vapor recovery, delivering cutting-edge technology to optimize oil and gas production.” Source: RevenueBase Database · checked Sep 17, 2026
24	Mueller CO	Indirect evidence	Chattanooga, TN, United StatesHQ checked Sep 17, 2026	1,001-5,000	213 contacts →
	Indirect evidence “During the past 150 years, Mueller Co.” Source: RevenueBase Database · checked Sep 17, 2026
25	Vault Pressure Control	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	212 contacts →
	Indirect evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: oil and gas instrumentation companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names oil and gas instrumentation companies.
Partial evidence: Its own public description names part of oil and gas instrumentation companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas instrumentation companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,629 oil and gas instrumentation companies based in the United States

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Oil and gas instrumentation companies based in the United States at a glance

As of Sep 17, 2026

30.7%Verified-email coverage

82.8Average contacts per company

11-50Median size (employees)

14.2%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

505

11-50

631

51-200

339

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

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 1,629 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among oil and gas instrumentation companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “oil and gas instrumentation companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names oil and gas instrumentation companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among oil and gas instrumentation companies, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 41,418 across the full list. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Oil and gas instrumentation companies by metro

Oil and gas instrumentation companies in Houston232
Oil and gas instrumentation companies in Midland36
Oil and gas instrumentation companies in Tulsa27
Oil and gas instrumentation companies in Odessa26

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names oil and gas instrumentation companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many oil and gas instrumentation companies are there based in the United States?

RevenueBase identified 1,629 oil and gas instrumentation companies headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

SLB, headquartered in Houston, tops this list with the largest team on record.

Which city has the most oil and gas instrumentation companies?

Houston leads with 232 headquartered companies, followed by Midland (36) and Tulsa (27).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 41,418 verified decision-maker contacts tracked across these 1,629 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 Smart Search, 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.