California

United States

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Petroleum Engineer

petroleum engineer

Petroleum Engineers

AECOM

California Resources Corporation

AppleOne

City of Long Beach, CA

Pacific Gas and Electric

SoCalGas

Calpine

Chevron

Amer Technology, Inc

U.S. Army

Petroleum engineers are responsible for designing and improving petroleum extraction and treatment facilities. They facilitate the construction of extraction devices and drilling activities. These engineers use current technologies to enhance industry techniques, and they often develop methods to improve the environmental impact of oil and gas extraction.

The exact duties of a petroleum engineer can vary based on their employer and specialty. Some common specializations for petroleum engineers include:
- Reservoirs: These engineers conduct research to determine the best ways to recover gas or oil from underground reservoirs.
- Drilling: A drilling engineer designs and implements methods to drill oil or gas wells in a safe, environmentally efficient way.
- Production: These engineers develop systems or processes to maximize the production of oil and gas wells. They also analyze drilling processes and recommend adjustments to increase extraction amounts.
- Completions: A completions engineer determines ways to optimize the flow of oil or gas through various methods, such as hydraulic fracturing.

Read more: 6 Types of Petroleum Engineers (With Tips for Choosing One)

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Petroleum engineer salary in California (Updated 2026)

How much does a Petroleum Engineer make in California?

Average base salary

Highest paying companies for Petroleum Engineer in California

Highest paying cities for Petroleum Engineers near California

Where can a Petroleum Engineer earn more?