Company lists · Data refreshed September 2026

Top 25 Oil and gas operators based in the United States

Name: Oil and gas operators 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 1,050 companies tracked

RevenueBase identified 1,050 oil and gas operators headquartered in the United States as of September 2026 and tracks 157,944 professional contacts across them, including 42,104 with verified work emails. Houston is the largest hub.

This list covers oil and gas operators 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

1,050Companies

157,944Contacts tracked

42,104Verified emails

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The 25 largest oil and gas operators based in the United States

Ranked by team size

Top 25 of 1,050 oil and gas operators 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 operators: 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	Chevron	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	60,138 contacts →
	Indirect evidence “Our greatest resource is our people.” Source: RevenueBase Database · checked Sep 17, 2026
2	OXY	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	16,245 contacts →
	Strong evidence “Oxy is an international energy company that produces, markets and transports oil and natural gas to maximize value and provide resources fundamental to life.” Source: RevenueBase Database · checked Sep 17, 2026
3	Conocophillips	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	15,828 contacts →
	Strong evidence “We are a global oil and gas company tasked with an important job-to safely find and deliver energy for the world.” Source: RevenueBase Database · checked Sep 17, 2026
4	Phillips 66	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	11,576 contacts →
	Indirect evidence “As a leading integrated downstream energy provider, we power the operations that keep life moving forward.” Source: RevenueBase Database · checked Sep 17, 2026
5	Anadarko Petroleum Corporation	Strong evidence	The Woodlands, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	3,460 contacts →
	Strong evidence “Anadarko is among the world’s largest independent oil and natural gas exploration and production companies, with corporate offices in The Woodlands, Texas.” Source: RevenueBase Database · checked Sep 17, 2026
6	Chesapeake Energy	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,954 contacts →
	Indirect evidence “Headquartered in Oklahoma City, Chesapeake Energy Corporation is powered by dedicated and innovative employees who are focused on discovering and responsibly developing our…” Source: RevenueBase Database · checked Sep 17, 2026
7	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
8	SM Energy Company	Strong evidence	Denver, CO, United StatesHQ checked Sep 17, 2026	501-1,000	2,176 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
9	Southwestern Energy	Indirect evidence	Spring, TX, United StatesHQ checked Sep 17, 2026	501-1,000	1,396 contacts →
	Indirect evidence “We are energy.” Source: RevenueBase Database · checked Sep 17, 2026
10	Halliburton Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	1,379 contacts →
	Indirect evidence “Founded in 1919, Halliburton is one of the world’s largest providers of products and services to the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
11	Delek US	Indirect evidence	Brentwood, TN, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,297 contacts →
	Indirect evidence “Delek US is a diversified downstream energy company with assets in petroleum refining, asphalt, renewable fuels, and logistics.” Source: RevenueBase Database · checked Sep 17, 2026
12	Cudd Energy Services	Strong evidence	The Woodlands, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,285 contacts →
	Strong evidence “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.” Source: RevenueBase Database · checked Sep 17, 2026
13	Forum Energy Technologies	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,262 contacts →
	Strong evidence “FET (Forum Energy Technologies, Inc.) is a global company, serving the crude oil, natural gas, and renewable energy industries.” Source: RevenueBase Database · checked Sep 17, 2026
14	Noble Energy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,155 contacts →
	Indirect evidence “WE ARE NOBLE.” Source: RevenueBase Database · checked Sep 17, 2026
15	Coterra Energy	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	1,034 contacts →
	Indirect evidence “As of May 7, 2026, Coterra has officially completed its merger with Devon Energy, marking an exciting new chapter for our organization.” Source: RevenueBase Database · checked Sep 17, 2026
16	KLX Energy Services	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	857 contacts →
	Partial evidence “KLX Energy Services provides more than 100 mission-critical oilfield services, tools, technologies and equipment to some of the industry’s leading operators.” Source: RevenueBase Database · checked Sep 17, 2026
17	Pioneer Energy Services	Indirect evidence	San Antonio, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	770 contacts →
	Indirect evidence “Pioneer Energy Services is now Patterson-UTI” Source: RevenueBase Database · checked Sep 17, 2026
18	Aera Energy LLC	Indirect evidence	Bakersfield, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	606 contacts →
	Indirect evidence “As a California company, Aera holds the values of Californians: we strive to innovate, we celebrate productivity, and advocate for the preservation of our beautiful state.” Source: RevenueBase Database · checked Sep 17, 2026
19	Island Operating Company	Strong evidence	Scott, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	570 contacts →
	Strong evidence “Improving efficiency and reducing costs, all while meeting safety requirements, is the challenge faced by every operator in the oil and gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
20	Merit Energy Company	Strong evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	501-1,000	527 contacts →
	Strong evidence “Merit is one of the largest private oil and gas operators in the United States and has served as a direct energy investment for institutional investors and family offices for more…” Source: RevenueBase Database · checked Sep 17, 2026
21	Unit Corporation	Partial evidence	Tulsa, OK, United StatesHQ checked Sep 17, 2026	51-200	484 contacts →
	Partial evidence “Unit Corporation is a Tulsa-based publicly held energy company engaged through its subsidiary, Unit Petroleum Company, in the exploration for and production of oil and natural…” Source: RevenueBase Database · checked Sep 17, 2026
22	Enervest, LTD	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	424 contacts →
	Strong evidence “EnerVest is a top-tier, low-cost oil and natural gas operating company.” Source: RevenueBase Database · checked Sep 17, 2026
23	Vital Energy	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 17, 2026	201-500	419 contacts →
	Indirect evidence “Vital Energy is committed to energizing human potential.” Source: RevenueBase Database · checked Sep 17, 2026
24	Deep Well Services	Indirect evidence	Zelienople, PA, United StatesHQ checked Sep 17, 2026	501-1,000	384 contacts →
	Indirect evidence “Established in 2008, Deep Well Services (DWS) is an oilfield services company specializing in the most complex and difficult types of well work utilizing hydraulic completion…” Source: RevenueBase Database · checked Sep 17, 2026
25	Exco Resources, INC	Strong evidence	Dallas, TX, United StatesHQ checked Sep 17, 2026	51-200	377 contacts →
	Strong evidence “EXCO Resources is an oil and natural gas company engaged in the acquisition, development and exploitation of onshore North American oil and natural gas properties.” 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 operators. 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 operators.
Partial evidence: Its own public description names part of oil and gas operators, 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 operators. 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 1,050 oil and gas operators based in the United States

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Oil and gas operators based in the United States at a glance

As of Sep 17, 2026

26.7%Verified-email coverage

150.4Average contacts per company

11-50Median size (employees)

13.6%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

370

11-50

380

51-200

181

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 1,050 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 operators, 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 operators”. 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 operators), 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 operators, 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, 42,104 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 operators by metro

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 operators, 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 operators are there based in the United States?

RevenueBase identified 1,050 oil and gas operators 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?

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

Which city has the most oil and gas operators?

Houston leads with 143 headquartered companies, followed by Midland (49) and Dallas (37).

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 42,104 verified decision-maker contacts tracked across these 1,050 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.