The oil and gas industry's exploration and production sector, comprising dedicated companies in California, focuses on finding reservoirs and drilling oil and gas wells. They operate across established oil-rich regions, utilizing innovative techniques to extract resources safely and responsibly, while adhering to stringent environmental guidelines. These entities support energy generation, enabling a sustainable infrastructure, and steering the industry towards a greener future. The sector encompasses a diverse sphere of firms, ranging from those with a centuries-old heritage to those with nimble entrepreneurial vigour.


Top 21 exploration and production companies in California

1. Berry Corporation

  • Website: bry.com
  • Headquarters: Bakersfield, California, United States
  • Founded: 1909
  • Headcount: 201-500
  • Latest funding type: Ipo
  • LinkedIn

Berry Corporation (bry) is an upstream energy company that focuses on the safe and responsible development and production of conventional oil reserves in the Western United States, primarily in the San Joaquin Basin. With a history dating back to 1909, Berry is committed to maintaining California's natural resources while creating value for its shareholders. The company provides relevant information on its financial performance and operations for investors and offers career opportunities and internships. Berry Corporation prioritizes sustainability and environmental, social, and governance (ESG) practices.


2. ANSCO, Inc.

  • Website: ansco.us
  • Headquarters: Newport Beach, California, United States
  • Headcount: 201-500
  • LinkedIn

ANSCO is a company that provides services and technology to the oil and gas industry. They specialize in exploration, petroleum and derivatives trading, oilfield equipment and supplies, and various oilfield services. They aim to enhance exploration success and raise capital for long-term expansion.


3. Signal Hill Petroleum, Inc.

  • Website: shpi.net
  • Headquarters: Signal Hill, California, United States
  • Founded: 1984
  • Headcount: 51-200
  • LinkedIn

Signal Hill Petroleum is a privately owned California-based energy company specializing in responsible and sustainable exploration and development of oil and gas in urban areas. With over 30 years of experience, the company produces over one million barrels of crude oil annually, contributing to local and national economies.


4. Kenai Drilling Limited

Kenai Drilling Limited is a contract drilling services company specializing in the exploration and development of onshore and offshore oil, gas, and geothermal wells. With a rig fleet covering the western United States and mid continent regions, Kenai has grown and adapted to meet the needs of the petroleum industry. The company offers not only planning and drilling services but also specializes in building equipment for challenging drilling locations.


5. Royale Energy, Inc.

  • Website: royl.com
  • Headquarters: San Diego, California, United States
  • Founded: 1986
  • Headcount: 11-50
  • LinkedIn

Royale Energy, Inc. is a publicly traded oil and gas production company with operations in California and Texas. The company owns and operates over 70 producing oil and natural gas wells and focuses on identifying and developing low-risk drilling opportunities in known oil and gas fields. Royale Energy provides direct management of company properties to ensure high productivity. They market oil and natural gas to their customers.


6. The Termo Company

  • Website: termoco.com
  • Headquarters: Long Beach, California, United States
  • Founded: 1933
  • Headcount: 11-50
  • LinkedIn

The Termo Company is an oil and natural gas production company with over 80 years of experience. They focus on exploring and evaluating investment opportunities, leading safe operations, and reducing their environmental impact. They have strong relationships with partners, investors, and employees.


7. Redding Oil Co

Redding Oil Company is a petroleum and gas exploration company that engages in drilling and production of oil and natural gas in the United States.


8. Petroleum Club at Sundale

The Petroleum Club is a company offering services for the oil and gas industry. They provide a wide range of solutions including drilling, exploration, production, and refining.


9. Decca Energy

Decca Energy is an international company specializing in various services for the energy industry. With over 30 years of experience, they offer expertise in engineering, programming, design and implementations, drilling and completions, workovers, optimization, lease and pipeline construction, and facilities. Their focus is on minimizing drilling and completion costs while maintaining long-term relationships with clients.


10. Lilac Solutions, Inc.

  • Website: lilacsolutions.com
  • Headquarters: Oakland, California, United States
  • Founded: 2016
  • Headcount: 51-200
  • Latest funding type: Grant
  • LinkedIn

Lilac Solutions is a company focused on scaling the supply of lithium for the electric era. They provide new technology solutions to efficiently increase production from brine resources, which are natural deposits of salt water containing lithium. Their aim is to meet the growing demand for lithium due to the conversion of automakers' factories to exclusively produce electric vehicles.


11. Mannon Associates

Mannon Associates: Decline Curve Analysis and Petroleum Engineering Consulting.


12. Magco Drilling Inc

Magco Drilling is a drilling services provider that specialises in the oil and gas industry. They offer a range of drilling services including well drilling, directional drilling and well completion services.


13. Chalfouh International

Chalfouh is a company providing innovative solutions and services for the oil and gas industry.


14. Numeric Solutions, LLC

Numeric Solutions is a Geoscience and Engineering consulting firm specializing in providing quality solutions for the global exploration and production industry. Our team consists of experienced Geoscientists, Reservoir Engineers, Energy Finance professionals, and Capital Markets consultants knowledgeable in all aspects of the water, oil & gas, midstream, and downstream sub sectors. We offer specialized and turn-key project assistance at all levels with complete confidentiality Our strong knowledge and experience makes Numeric Solutions an excellent partner in making new and innovative projects accessible to the market.


15. TL Machine, Inc.

  • Website: tlmachine.com
  • Headquarters: Garden Grove, California, United States
  • Founded: 1994
  • Headcount: 51-200
  • LinkedIn

TL Machine is a company that offers technical expertise and innovative solutions for various industries. They specialize in CNC production machining for aerospace and defense, oil exploration and energy, and medical and surgical equipment.


16. EGS, Inc.

  • Website: envgeo.com
  • Headquarters: Santa Rosa, California, United States
  • Founded: 1995
  • Headcount: 1-10
  • LinkedIn

EnvGeo specializes in sustainable, green, and renewable energy exploration, development, and evaluation globally.


17. GeoPetro Resources Company

  • Website: geopetro.com
  • Headquarters: San Francisco, California, United States
  • Founded: 1994
  • Headcount: 11-50
  • Latest funding type: Acquired
  • LinkedIn

GeoPetro Resources Company is an independent energy exploration and production company headquartered in San Francisco, California with projects in North America and Australia.


18. Chevron

  • Website: chevron.com
  • Headquarters: San Ramon, California, United States
  • Founded: 1999
  • Headcount: 10001+
  • LinkedIn

Chevron is a global energy corporation focused on safely delivering lower carbon energy to meet the world's growing demand. They leverage their strengths in exploration and production, new energy technologies, and supplier diversity to provide reliable and affordable energy solutions. They are committed to sustainability and driving social and economic development globally.


19. Vaughan Consulting Grp

Vaughan Consulting Group offers a wide range of consulting services in engineering, programming, design, drilling and completions, workovers, lease and pipeline construction, and facilities. With over 15 years of experience, we have built strong partnerships with clients and consultants, focusing on trust, integrity, and experience.


20. K&S Enterprises

  • Website: ksentusa.com
  • Headquarters: Adelanto, California, United States
  • Founded: 1971
  • Headcount: 11-50
  • LinkedIn

KS Enterprises is a manufacturer that specializes in the engineering and production of high-temperature, high-pressure seals, sleeves, ducts, and other flexible connectors. Their products are designed to meet precise temperature, pressure, and exposure requirements. KS serves a range of industries including aerospace, commercial aviation, military, oil and gas, and off-road vehicles.


21. Geothermal Resource Group, Inc.

Geothermal Resource Group provides comprehensive geothermal development and management services, specializing in drilling engineering, reservoir engineering, and exploration and geoscience. Our team of geothermal experts has extensive experience in 18 countries and at 87 hot water and steam fields worldwide.


Want to find more exploration and production companies?


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