| # | Company | Employees |
|---|---|---|
| 1 |
Sunoco LPsunocolp.com
Extensive pipeline network and terminals supporting fuel distribution to thousands of branded locations, independent dealers, and commercial customers. |
6,493 |
| 2 |
HF Sinclairhfsinclair.com
Manufactures and sells light products, fuels, lubricants, and asphalt; operates refineries; markets motor fuel; produces renewable diesel and specialized lubricants. |
6,426 |
| 3 |
Oil and Gas Recruitmentwhatsapp.com
Specializing in oil and gas recruitment, this company offers training, job opportunities, articles, videos, Q&A, events, and more for the industry |
3,042 |
| 4 |
HollyFrontierhfsinclair.com
Independent petroleum refiner producing gasoline, diesel, jet fuel, asphalt, lubricants, operating refineries and logistics in U.S. regions. |
1,265 |
| 5 |
Hunt Oil Companyhuntoil.com
Company prioritizes employee well-being, offering competitive compensation, flexible work schedules, diversity, community engagement, and professional development opportunities. |
826 |
| 6 |
EnLink Midstreamenlink.com
EnLink operates midstream assets, providing natural gas, crude oil, NGL capabilities, and energy services, focusing on sustainability and environmental performance in the energy sector |
741 |
| 7 |
Matador Resources Companymatadorresources.com
A Dallas-based, NYSE-listed independent energy company focused on exploration, development, production, and acquisition of oil and natural gas resources in the US |
485 |
| 8 |
Axis Energy Servicesaxisofs.com
Oilfield service company formed in 2018, specializing in completion and workover services for shale operators to streamline operations and reduce costs |
484 |
| 9 |
Kosmos Energykosmosenergy.com
A leading deepwater exploration and production company with assets in proven basins offshore various countries, prioritizing safety and environmental responsibility for stakeholders |
474 |
| 10 |
Berry Corporationcrc.com
An independent, publicly traded energy company focused on acquiring, developing, and producing domestic oil and gas reserves in California and Utah |
341 |
| 11 |
Aethon Energyaethonenergy.com
A private investment firm operating onshore oil and gas properties in the United States with headquarters in Dallas, Texas |
325 |
| 12 |
Petro-Hunt L.L.Cpetro-hunt.com
A privately held independent oil and gas company headquartered in Dallas, actively engaged in worldwide exploration and production of oil and gas |
206 |
| 13 |
Solomon Associatessolomoninsight.com
Data-driven energy industry consulting firm delivering strategic insight for improved efficiency, reliability, and profitability through historical performance data and industry expertise Serving clients globally |
185 |
| 14 |
Netherland, Sewell & Associates, Inc.netherlandsewell.com
Global leader in petroleum property analysis for the upstream energy industry, providing integrated engineering, geological, operational, and economic solutions worldwide Trusted for SEC reserves reporting and client relationships |
170 |
| 15 |
Schwob Energy Servicesschwobenergy.com
General Construction Contractor specializing in building energy related facility systems, known for world class construction methods, top safety standards, and job distinctions |
147 |
| 16 |
Providence Energy Ltd.providence-energy.com
A private company specializing in energy investments and management services |
72 |
| 17 |
Gulf Coast Westerngulfcoastwestern.com
A Dallas-based company exploring, developing, and acquiring domestic oil and gas reserves in the Gulf Coast region and beyond since 1970 |
71 |
| 18 |
B膧SA Resources, Inc.basaresources.com
An independent oil and gas production company in Dallas specializing in acquiring, developing, and managing mature reserves for recovery using secondary/tertiary methods |
63 |
| 19 |
Standard Oil Companystandardoilusa.com
Global company investing in oil, gas, drilling, coal to fuel, and renewable energy projects Committed to developing sustainable energy options worldwide |
60 |
| 20 |
Baker & O'Brien, Inc.bakerobrien.com
Independent engineering consulting firm serving energy and related industries, offering services for exploration, production, transportation, processing, distribution, marketing, and industry support |
58 |
| 21 |
Petro-Victory Energy Corp.petrovictoryenergy.com
A publicly traded oil and gas company focused on acquiring and developing crude oil and natural gas resources in Brazil for substantial shareholder returns |
47 |
| 22 |
Accudyne Industriesaccudyneindustries.com
Global provider of precision-engineered flow control equipment, high efficiency compressors serving critical industries worldwide, with a focus on oil & gas, chemical, and power generation sectors |
47 |
| 23 |
Caelus Energycaelusenergy.com
A privately held exploration & production company focused on identifying, pursuing, and developing unique opportunities in the energy sector worldwide |
46 |
| 24 |
Tana Exploration Company, LLCtanaexp.com
An independent oil and gas company based in Dallas, Texas, leveraging experienced management to identify prospects, maximize production, and pursue strategic acquisitions |
41 |
| 25 |
Dale Operating Companydaleoperating.com
A Dallas-based oil & gas company established in 1981 focusing on acquisition, exploration, and production of reserves in the United States |
41 |
| 26 |
Providence Energy Corporationprovidence-energy.com
Oil and energy company in Dallas, Texas, specializing in the exploration, production, and distribution of energy resources |
39 |
| 27 |
Hunt Consolidated, Inc.huntconsolidated.com
A Dallas-based company focused on exploring, developing, and refining oil and gas through its various subsidiaries and overseas operations |
36 |
| 28 |
Aspen Midstreamaspenmidstream.com
An independent energy company providing comprehensive midstream solutions including natural gas gathering, processing, compression, treating, and condensate stabilization in North America |
34 |
| 29 |
Rosewood Resources, Inc.rosewoodresources.com
Privately held oil and gas company based in Dallas, TX with operations in Texas, managing non-operated assets domestically and internationally Dedicated to growth and integrity |
30 |
| 30 |
Dallas Production Company
A privately held oil and gas exploration and production company headquartered in Dallas, Texas |
27 |
| 31 |
Triple Crown Resources, LLCtriplecrownresources.com
An energy company based in Texas specializing in providing energy solutions and services to customers in the state |
26 |
| 32 |
HEYCO Energy Groupheycoenergy.com
Privately-owned upstream energy company providing strategy, technology, and capital for oil and gas exploration projects in the US and Europe |
25 |
| 33 |
GSE Consultinggseconsultinglp.com
National energy management and procurement firm helping companies lower electricity and natural gas costs through market analysis, supplier bid evaluation, audits, and efficiency programs |
19 |
| 34 |
Power Brokersprioritypower.com
National consulting firm offering energy procurement and management services, delivering savings in deregulated markets by representing clients through competitive bidding |
19 |
| 35 |
Panhandle Eastern Pipe Line Co LP.peplmessenger.energytransfer.com
An oil and energy company located in Dallas, TX, specializing in pipeline services in the United States |
19 |
| 36 |
Browning Oil Co Incbrowningoil.com
Oil & energy company specializing in operations based in Dallas, Texas, United States |
10 |
| 37 |
Kentex Worlandkentexworland.com
Privately-held exploration and production company specializing in acquiring large, high-quality oil and gas assets, prioritizing safety, employee well-being, and team collaboration |
9 |
| 38 | 8 | |
| 39 |
Wellspring Energy Resourceswellspring-energy.com
Energy capital solutions provider specializing in non-operated interests acquisition, development financing, and structured transactions for energy companies and owners |
7 |
| 40 |
HOG Resources LLChogresources.com
Private energy company focused on acquiring, exploring, and developing oil and gas properties in West Texas, East Texas, and Oklahoma |
7 |
| 41 |
Schlachter Oilschlachteroil.com
An energy company based in Dallas, TX, United States, specializing in oil production and distribution |
6 |
| 42 |
Dunwell Corporationdunwellcorp.com
An oil and gas company specializing in production, drilling, and well services, focusing on shallow to intermediate depths, utilizing information technology for cost-efficient prospect development |
5 |
| 43 |
Enterra Capital, Inc.enterracapital.com
Independent oil and natural gas firm focusing on developing production in proven fields to provide quality investment opportunities for American energy independence |
3 |
| 44 |
Legion Energy Services LLClegionenergyllc.com
A forward-thinking energy company specializing in innovative products and services for natural gas and crude oil gathering, processing, marketing, and transportation |
3 |
| 45 |
Coyote Midstreamcoyotemidstream.com
Independent energy infrastructure provider offering innovative solutions for producers and refiners, specializing in liquids, gas, and water gathering, transportation, and terminaling Led by experienced management team |
3 |
| 46 |
Chelsea Energy Inc.chelseaenergy.com
A company established in 1992 that identifies oil and gas sector opportunities for exploration, development, acquisition, divestment, and benefit of investors |
2 |
| 47 |
United Oil & Gas Corp.uogcorp.com
A US based oil and gas development company focusing on low-risk projects with proven reserves for near-term production and revenue growth |
2 |
| 48 |
NEP Midstream and Royaltiesnepmidstream.com
Investing in pipeline and energy logistics assets focused on transporting, gathering, processing, and storing crude oil, natural gas, and NGLs |
1 |
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How this list is built
Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Oct 10, 2026.
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