According to the search results, the salary of a petroleum engineer varies depending on factors such as location, experience, and industry. Here are some key findings:

• The median salary for petroleum engineers in the United States was $130,850 in 2021, with the best-paid 25% making $167,750 and the lowest-paid 25% making $100,880.
• The Bureau of Labor Statistics reports that the annual wage for petroleum engineers ranges from $76,960 to $169,230, with the highest salaries typically found in management, scientific, and technical consulting services.
• The average salary for a petroleum engineer in California is around $157,600 per year, with wages typically starting from $97,800.
• The highest-paying metropolitan areas for petroleum engineers in the US are New York, Oxnard, Anchorage, San Francisco, and Austin.
• The states and districts that pay petroleum engineers the highest mean salary are New Jersey, Alaska, California, Texas, and Florida.

Its important to note that these figures are based on estimates and may not reflect the actual salary of every petroleum engineer. Additionally, salaries may vary depending on the specific job duties and responsibilities of the engineer.