Company lists · Data refreshed September 2026

Top 25 Upstream oil and gas operators based in Oklahoma City, United States

Name: Upstream oil and gas operators based in Oklahoma City, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 37 companies tracked

RevenueBase identified 37 upstream oil and gas operators headquartered in Oklahoma City, United States as of September 2026 and tracks 2,384 professional contacts across them, including 1,112 with verified work emails. Houston is the largest hub.

This list covers upstream oil and gas operators headquartered in Oklahoma City, 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 19, 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 19, 2026 86% judged on-target in blind review

37Companies

2,384Contacts tracked

1,112Verified emails

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The 25 largest upstream oil and gas operators based in Oklahoma City, United States

Ranked by team size

Top 25 of 37 upstream oil and gas operators based in Oklahoma City, United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to upstream 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	Continental Resources	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,388 contacts →
	Indirect evidence “Continental Resources, Inc.” Source: RevenueBase Database · checked Sep 19, 2026
2	Cactus Drilling CO	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	1,001-5,000	440 contacts →
	Indirect evidence “As the largest privately-held domestic land drilling contractor in the United States, Cactus provides competent, motivated personnel utilizing premium equipment to meet and exceed…” Source: RevenueBase Database · checked Sep 19, 2026
3	Mustang Fuel Corp	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	51-200	108 contacts →
	Partial evidence “Mustang Fuel Corporation is a privately held company headquartered in Oklahoma City, Oklahoma, along with its wholly owned subsidiaries Mustang Gas Products, LLC and Mustang Fuel…” Source: RevenueBase Database · checked Sep 19, 2026
4	SEF Energy	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	501-1,000	50 contacts →
	Indirect evidence “SEF Energy is a private holding company with a portfolio of U.S-based oilfield manufacturing and service assets.” Source: RevenueBase Database · checked Sep 19, 2026
5	Genesis Fluids	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	51-200	41 contacts →
	Indirect evidence “Genesis Fluids LLC provides value-added engineering, services, and technology for drilling and completions operations that consistently exceeds our customer’s expectations.” Source: RevenueBase Database · checked Sep 19, 2026
6	Basin Engineering	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	51-200	37 contacts →
	Indirect evidence “Basin Engineering is an energy engineering and operations consulting firm specializing in drilling, completion and production operations and petroleum engineering specialties.” Source: RevenueBase Database · checked Sep 19, 2026
7	Mammoth Energy Services	Partial evidence	Oklahoma City, United StatesHQ checked Sep 19, 2026	1,001-5,000	35 contacts →
	Partial evidence “We are an integrated, growth-oriented oilfield service company serving companies engaged in the exploration and development of North American onshore unconventional oil and…” Source: RevenueBase Database · checked Sep 19, 2026
8	Sweatt Construction	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	28 contacts →
	Partial evidence “Sweatt Construction is an Oil and Energy company located in Oklahoma City, Oklahoma, United States.” Source: RevenueBase Database · checked Sep 19, 2026
9	Crown Energy Company	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	26 contacts →
	Strong evidence “Crown Energy focuses on being a leader in oil & gas “Contract Operations”.” Source: RevenueBase Database · checked Sep 19, 2026
10	89 Energy	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	25 contacts →
	Strong evidence “We are an aggressive, growth-oriented oil and gas exploration and production company with a proven track record as an early-mover in Mid-Continent resource plays.” Source: RevenueBase Database · checked Sep 19, 2026
11	Duncan OIL Properties, INC	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	24 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
12	Crawley Petroleum	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	51-200	22 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
13	Kirkpatrick OIL Company	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	20 contacts →
	Strong evidence “Kirkpatrick Oil is a well-established, family-owned oil and natural gas exploration and production company.” Source: RevenueBase Database · checked Sep 19, 2026
14	Revolution Resources, LLC	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	1-10	19 contacts →
	Indirect evidence “We are an Oklahoma based, privately funded, E&P company taking a revolutionary approach to efficient and effective production management by utilizing cutting-edge technologies and…” Source: RevenueBase Database · checked Sep 19, 2026
15	Enerquest OIL & Gas, LLC	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	16 contacts →
	Strong evidence “EnerQuest Oil & Gas, LLC is a privately held exploration and development company headquartered in Oklahoma City, Oklahoma.” Source: RevenueBase Database · checked Sep 19, 2026
16	Troy Energy	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	14 contacts →
	Strong evidence “Troy Energy is an independent oil and gas acquisition, development and exploration company headquartered in Oklahoma City, OK.” Source: RevenueBase Database · checked Sep 19, 2026
17	Shadowpeak Resources, LLC	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	13 contacts →
	Strong evidence “ShadowPeak Resources, LLC is an energy company located in Oklahoma City, OK with a focus on acquiring, developing, and operating conventional and unconventional oil and gas…” Source: RevenueBase Database · checked Sep 19, 2026
18	Gulf Exploration L.L.C	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	1-10	12 contacts →
	Strong evidence “Aggressive, independent oil and gas exploration company historically involved in exploration projects in 9 states.” Source: RevenueBase Database · checked Sep 19, 2026
19	Mach Resources	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	51-200	7 contacts →
	Indirect evidence “Welcome to MACH Resources.” Source: RevenueBase Database · checked Sep 19, 2026
20	Americo OIL LLC	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong evidence “AMERICO OIL LLC is an upstream producer of oil & natural gas based out of Oklahoma City focusing primarily on regional operations and on the acquisition and development of…” Source: RevenueBase Database · checked Sep 19, 2026
21	Vaquero Resources	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	5 contacts →
	Strong evidence “Vaquero Resources is an Oklahoma City based exploration and production company focused on the acquisition and exploitation of upstream oil & gas assets across the United States.” Source: RevenueBase Database · checked Sep 19, 2026
22	Bass Energy & Exploration, LLC	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	1-10	5 contacts →
	Strong evidence “Upstream Oil & Gas company managing and operating absentee ran investments.” Source: RevenueBase Database · checked Sep 19, 2026
23	Impact Energy Operating, LLC	Strong evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	3 contacts →
	Strong evidence “Privately held oil and gas company.” Source: RevenueBase Database · checked Sep 19, 2026
24	Cardinal River Energy	Partial evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	2 contacts →
	Partial evidence “Cardinal River Energy Co is an oil & energy company based out of 211 N Robinson Ave, Oklahoma City, OK, United States.” Source: RevenueBase Database · checked Sep 19, 2026
25	Charter OAK Production CO	Indirect evidence	Oklahoma City, OK, United StatesHQ checked Sep 19, 2026	11-50	2 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 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: upstream 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 upstream oil and gas operators.
Partial evidence: Its own public description names part of upstream 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 upstream 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 37 upstream oil and gas operators based in Oklahoma City, United States

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Upstream oil and gas operators based in Oklahoma City, United States at a glance

As of Sep 19, 2026

46.6%Verified-email coverage

64.4Average contacts per company

11-50Median size (employees)

494.6%Largest-city concentration · Houston

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

501-1,000

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Oklahoma City, so it is reported there. Company counts and contact totals on this page are exact for Oklahoma City, over 37 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 upstream 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 Oklahoma City, United States whose own description of what they do matches “upstream 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 upstream 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 upstream oil and gas operators, and records with no verified work email. Companies headquartered outside Oklahoma City 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, 1,112 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 19, 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.

Upstream oil and gas operators by metro in the United States

Upstream oil and gas operators in Houston183
Upstream oil and gas operators in Dallas58
Upstream oil and gas operators in Oklahoma City37
Upstream oil and gas operators in Midland35
Upstream oil and gas operators in Denver34
Upstream oil and gas operators in Fort Worth27

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 upstream 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 upstream oil and gas operators are there based in Oklahoma City, United States?

RevenueBase identified 37 upstream oil and gas operators headquartered in Oklahoma City, 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?

Continental Resources, headquartered in Oklahoma City, tops this list with the largest team on record.

Which city has the most upstream oil and gas operators?

Houston leads with 183 headquartered companies, followed by Dallas (58) and Oklahoma City (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 1,112 verified decision-maker contacts tracked across these 37 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 19, 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.