Company lists · Data refreshed September 2026

Top 25 Oilfield instrumentation companies worldwide

Name: Oilfield instrumentation companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 7,834 companies tracked

RevenueBase identified 7,834 company matches for oilfield instrumentation companies worldwide as of September 2026 and tracks 283,928 professional contacts across them, including 73,663 with verified work emails. The United States is the largest market and Houston the largest hub.

This list covers company matches for oilfield instrumentation companies 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 September 20, 2026. Country and city lists for oilfield instrumentation companies 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 Sep 20, 2026 How this list was built

7,834Companies

283,928Contacts tracked

73,663Verified emails

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The 25 largest oilfield instrumentation companies worldwide

Ranked by team size

Top 25 of 7,834 company matches for oilfield instrumentation companies worldwide, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 20, 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.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	SLB	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	10001+	76,561 contacts →
	Exact match “SLB is a global technology company that has driven energy innovation for more than a century.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
2	Aker Solutions	Exact match	Fornebu, NorwayHQ recorded Sep 20, 2026	10001+	15,774 contacts →
	Exact match “Aker Solutions is a global engineering and technology company known for delivering complex energy projects with trusted quality and predictable results.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
3	Nabors Industries	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	10001+	5,865 contacts →
	Exact match “Nabors Industries is a leading provider of advanced technology for the energy industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
4	Wika Group	Exact match	Klingenberg, MexicoHQ recorded Sep 20, 2026	10001+	4,549 contacts →
	Exact match “The WIKA Group is a global market leader in pressure and temperature measurement.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
5	Oilserv	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 20, 2026	1,001-5,000	2,249 contacts →
	Exact match “OiLSERV is a provider of an expanding range of oilfield services, including well logging, well testing, production enhancement, drilling services, surface production management…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
6	OIL States International	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	5,001-10,000	2,215 contacts →
	Exact match “Oil States International, Inc.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
7	Superior Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,938 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 · Sep 20, 2026 · View company records in RevenueBase
8	Rotork	Exact match	Bath, United KingdomHQ recorded Sep 20, 2026	1,001-5,000	1,834 contacts →
	Exact match “Rotork is a FTSE-250 global leader in mission-critical flow control and instrumentation solutions, trusted by the world’s most essential industries - including oil & gas, water &…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
9	Geolog International	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 20, 2026	1,001-5,000	1,685 contacts →
	Exact match “Every year, drilling teams make decisions worth millions of dollars on incomplete information.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
10	Weir OIL And GAS	Exact match	Fort Worth, TX, United StatesHQ recorded Sep 20, 2026	n/a	1,651 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 · Sep 20, 2026 · View company records in RevenueBase
11	Krohne	Exact match	Duisburg, GermanyHQ recorded Sep 20, 2026	1,001-5,000	1,640 contacts →
	Exact match “KROHNE is a global manufacturer and provider of process instrumentation, measurement solutions and services in many industries.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
12	ANTON	Exact match	Dubai, United Arab EmiratesHQ recorded Sep 20, 2026	5,001-10,000	1,407 contacts →
	Exact match “Anton Oilfield Services Group (hereinafter as “Anton”) is the world's leading integrated oilfield technology service company that provides clients with a full range of products…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
13	Cudd Energy Services	Exact match	The Woodlands, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,285 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 · Sep 20, 2026 · View company records in RevenueBase
14	Englobal	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	201-500	1,183 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
15	Stewart & Stevenson	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	1,135 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 · Sep 20, 2026 · View company records in RevenueBase
16	John Energy Limited	Exact match	Ahmadabad, IndiaHQ recorded Sep 20, 2026	501-1,000	1,096 contacts →
	Exact match “JEL is India based niche provider of oil & Gas Field serives.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
17	Welltec	Exact match	Allerød, DenmarkHQ recorded Sep 20, 2026	501-1,000	1,043 contacts →
	Exact match “Welltec® is a global technology company that develops and provides efficient, hi-tech solutions for the energy industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
18	Carso Perforación	Exact match	United StatesHQ recorded Sep 20, 2026	1,001-5,000	994 contacts →
	Exact match “Empresa líder en el Sector Petrolero, con presencia a Nivel Nacional, principales clientes PEMEX Y CFE, con servicios como perforación de pozos terrestres, Marinos, Geotérmicos…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
19	Celeros Flow Technology	Exact match	Charlotte, NC, United StatesHQ recorded Sep 20, 2026	1,001-5,000	928 contacts →
	Exact match “Your "FULL-LIFECYCLE" Partner for Sustainable Flow Technology Solutions.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
20	Proserv	Exact match	Aberdeen, United KingdomHQ recorded Sep 20, 2026	501-1,000	924 contacts →
	Exact match “Proserv is the controls technology partner powering progress across the global energy sector.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
21	KLX Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	857 contacts →
	Exact match “KLX Energy Services provides more than 100 mission-critical oilfield services, tools, technologies and equipment to some of the industry’s leading operators.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
22	Innovex	Exact match	Humble, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	844 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 · Sep 20, 2026 · View company records in RevenueBase
23	MB Petroleum Services LLC	Exact match	Muscat, OmanHQ recorded Sep 20, 2026	1,001-5,000	748 contacts →
	Exact match “MB Petroleum Services is a multinational corporation providing cost-effective quality drilling, integrated well services and integrated production services worldwide with the…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase
24	Cactus Wellhead	Exact match	Houston, TX, United StatesHQ recorded Sep 20, 2026	1,001-5,000	703 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 · Sep 20, 2026 · View company records in RevenueBase
25	Tucker Energy Services	Exact match	Port Of Spain, Trinidad and TobagoHQ recorded Sep 20, 2026	1,001-5,000	696 contacts →
	Exact match “Tucker Energy Services is a service oriented and customer focused organization providing high quality products and services to our clients in the energy industry.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “oilfield instrumentation companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 7,834 oilfield instrumentation companies worldwide

See the full list, filter by size, metro and specialty, and access 73,663 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oilfield instrumentation companies worldwide at a glance

As of Sep 20, 2026

25.9%Verified-email coverage

36.2Average contacts per company

11-50Median size (employees)

3.6%Largest-city concentration · Houston

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

2,508

11-50

2,981

51-200

1,518

201-500

477

501-1,000

145

1,001-5,000

118

5,001-10,000

10001+

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 oilfield instrumentation companies are linked below.
What qualifies: Company records worldwide whose business descriptions match “oilfield instrumentation companies” 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 73,663 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 September 20, 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.

Oilfield instrumentation companies by location

37 lists · largest first

Every Oilfield instrumentation companies 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 “oilfield instrumentation companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oilfield instrumentation companies are there worldwide?

RevenueBase identified 7,834 company matches for oilfield instrumentation companies worldwide as of September 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?

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

Which country has the most oilfield instrumentation companies?

The United States leads with 1,719 companies, followed by India (573) and Canada (439). Every oilfield instrumentation companies list by country and city is linked on this page.

Which city has the most oilfield instrumentation companies?

Houston leads with 285 company records, followed by Calgary (138) and Tehran (119).

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 73,663 professional contacts with verified work emails tracked across these 7,834 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 September 20, 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.