Company lists · Data refreshed September 2026

Top 25 Oilfield companies based in the United States

Name: Oilfield 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 21, 2026 4,737 companies tracked

RevenueBase identified 4,737 company matches for oilfield companies associated with the United States as of September 2026 and tracks 449,400 professional contacts across them, including 122,675 with verified work emails. Houston is the largest hub.

This list covers company matches for oilfield companies 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 September 21, 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 Sep 21, 2026 How this list was built

4,737Companies

449,400Contacts tracked

122,675Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest oilfield companies based in the United States

Ranked by team size

Top 25 of 4,737 company matches for oilfield companies based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 21, 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 21, 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 21, 2026 · View company records in RevenueBase
2	Baker Hughes	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	61,166 contacts →
	Exact match “Baker Hughes (NASDAQ: BKR) is an energy technology company that provides solutions for energy and industrial customers worldwide.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
3	Halliburton	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	53,380 contacts →
	Exact match “We collaborate and engineer solutions to maximize asset value for our customers.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
4	NOV	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	29,577 contacts →
	Exact match “NOV delivers technology-driven solutions to empower the global energy industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
5	Conocophillips	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	15,828 contacts →
	Exact match “We are a global oil and gas company tasked with an important job-to safely find and deliver energy for the world.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
6	Nabors Industries	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
7	Noble Corporation	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	5,001-10,000	5,601 contacts →
	Exact match “Noble is a leading offshore drilling contractor for the oil and gas industry.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
8	W&t Offshore Inc. Nyse WTI	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	n/a	5,489 contacts →
	Exact match “We are an independent oil and natural gas acquisition, exploitation and exploration company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
9	FMC Technologies	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	4,749 contacts →
	Exact match “FMC Technologies is now TechnipFMC.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
10	Hess Corporation	Exact match	New York, NY, United StatesHQ recorded Sep 21, 2026	1,001-5,000	4,642 contacts →
	Exact match “Hess Corporation is a global independent energy company engaged in the exploration and production of crude oil and natural gas.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
11	NESR	Exact match	Houston, United StatesHQ recorded Sep 21, 2026	5,001-10,000	3,683 contacts →
	Exact match “National Energy Services Reunited Corp.(NESR) was founded in 2017 as one of the largest national oilfield services providers in the MENA and Asia Pacific regions and was the first…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
12	Murphy OIL Corporation	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	n/a	3,514 contacts →
	Exact match “Murphy Oil Corporation is a global independent oil and natural gas exploration and production company.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
13	Tidewater	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	5,001-10,000	3,290 contacts →
	Exact match “Tidewater Inc.(Tidewater) is the owner and operator of the world’s largest Offshore Support Vessel (OSV) fleet.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
14	Boart Longyear	Exact match	West Valley City, UT, United StatesHQ recorded Sep 21, 2026	5,001-10,000	3,285 contacts →
	Exact match “Established in 1890, Boart Longyear is the world’s leading innovative provider of drilling services, manufacturer of productivity-driven drilling equipment and performance…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
15	Valaris Limited	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	5,001-10,000	3,173 contacts →
	Exact match “We Are Valaris With decades of expertise and strategic commitment built on efficiency, capability and ingenuity, our sights are continually set toward a future built with purpose…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
16	KEY Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,755 contacts →
	Exact match “Headquartered in Houston, Texas, Key Energy Services provides a wide array of leading edge energy production solutions and services.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
17	Patterson-Uti	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	10001+	2,317 contacts →
	Exact match “Patterson-UTI is a leading provider of drilling and completion services to oil and natural gas exploration and production companies in the United States and other select…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
18	OIL States International	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	5,001-10,000	2,215 contacts →
	Exact match “Oil States International, Inc.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
19	Tesco Corporation	Exact match	Hamilton, United StatesHQ recorded Sep 21, 2026	1,001-5,000	2,177 contacts →
	Exact match “Tesco Corporation is now part of Nabors Industries.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
20	SM Energy Company	Exact match	Denver, CO, United StatesHQ recorded Sep 21, 2026	501-1,000	2,176 contacts →
	Exact match “SM Energy Company is an independent energy company focused on the exploration, exploitation, development, acquisition, and production of natural gas and crude oil in the United…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
21	Superior Energy Services	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
22	Hilcorp	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,803 contacts →
	Exact match “Hilcorp Energy Company was founded in 1989 with the vision of being the premier independent energy company in America.” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
23	Helix Energy Solutions Group	Exact match	Houston, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,706 contacts →
	Exact match “Helix Energy Solutions, headquartered in Houston, Texas, is an international offshore energy services company that provides specialty services to the offshore energy industry…” Recorded in the RevenueBase company graph · Sep 21, 2026 · View company records in RevenueBase
24	Weir OIL And GAS	Exact match	Fort Worth, TX, United StatesHQ recorded Sep 21, 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 21, 2026 · View company records in RevenueBase
25	Select Water Solutions	Exact match	Gainesville, TX, United StatesHQ recorded Sep 21, 2026	1,001-5,000	1,605 contacts →
	Exact match “Select is a leader in water management and chemical technology to our customers in the oil and gas industry, as well as in other industrial applications.” Recorded in the RevenueBase company graph · Sep 21, 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 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 4,737 oilfield companies based in the United States

See the full list, filter by size, metro and specialty, and access 122,675 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Oilfield companies based in the United States at a glance

As of Sep 21, 2026

27.3%Verified-email coverage

94.9Average contacts per company

11-50Median size (employees)

16.9%Largest-city concentration · Houston

Sep 21, 2026Page data refreshed

Companies by employee count

1-10

1,465

11-50

1,667

51-200

1,080

201-500

285

501-1,000

110

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 4,737 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 “oilfield 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. 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 122,675 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 21, 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 companies by metro

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 companies”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many oilfield companies are there based in the United States?

RevenueBase identified 4,737 company matches for oilfield companies associated with the United States 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 city has the most oilfield companies?

Houston leads with 801 company records, followed by Midland (280) and Odessa (162).

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 122,675 professional contacts with verified work emails tracked across these 4,737 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 21, 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.