Biggest Offenders

Chevron

The report found Chevron was the largest holder of idle wells at 9,055. The epicenter of Chevron’s legion of idle wells sits in Kern County, where Chevron maintains 7,694 idle wells, or 85% of its grand total statewide. It is also the last oil major doing exploration and production in California, but in 2022 it sold its longtime headquarters and transferred the bulk of its staff to Houston, Texas, sparking rumors that it would soon exit the state as an oil producer.

Chevron claimed a profit of $35.5 billion in 2022 and $117 billion in the last 10 years. It would cost an estimated $1.7 billion to plug Chevron’s current idle wells, less than 5% of last year’s reported profit and 1% of the company’s profit over the past decade. Plugging all its wells (26,431) in California would cost $5.1 billion, ​or just 4.4% of its combined profits over the last 10 years.

Chevron’s profits are in large part a by-product of the company’s international tax-dodging tactics. In 2015, the company admitted during a U.S. Senate investigation that it held at least $31 billion in multiple offshore tax havens. In 2017, Reuters also documented how Chevron loaned money to itself to avoid paying taxes to the Australian government, which sued Chevron over the practice and recouped $268 million. In 2018 Dutch and International unions filed a complaint as well alleging “massive tax avoidance” by Chevron using Dutch subsidiaries created for that purpose. In 2023, the company was reported to have benefitted from a $15 billion tax write-off after acquiring fracking giant Hess Corporation.

While Chevron has not plugged the vast bulk of its orphan and idle wells yet, Chevron CEO Michael Wirth’s 2022 compensation was $24 million. He made an additional $23 million that year by selling his company stock. Additionally, Chevron's executives have access to eight different private jets for executive use, worth an estimated $257 million, enough to plug 15% of the company’s current orphan and idle wells.

Aera, ExxonMobil & Shell

Aera claimed a profit of $98 billion in 2022. It would cost an estimated $1.8 billion to plug Aera’s current inventory of idle wells, only 1.8% of last year’s reported profits for the two companies that served as its jointly held owners until 2022: ExxonMobil and Shell. 

Plugging all Aera’s wells (24,060) in California would cost $4.7 billion and just 0.5% of its two former parent companies’ $332 billion in profit during the past decade.

In March 2023, IKAV acquired Aera Energy. IKAV is a German private equity company that now owns Aera on a 51% basis alongside Canadian Pension Plan (CPP) Investments’ 49% stake in Aera. IKAV is privately held and does not release profit figures, but it has $2.5 billion in assets under management (AUM). CPP Investments also has $570 billion in AUM and a 2023 fiscal net increase of $31 billion.

California Resources Corporation, Occidental Petroleum

The third largest holder of idle wells is California Resources Corporation (CRC), a spinoff created by Occidental Petroleum in 2014, with 6,658. Occidental is the world’s 25th largest oil company by market capitalization, which offloaded older California-centric assets onto a smaller newly created company. When Occidental created CRC as a spinoff company, Occidental passed on debt that would eventually lead to CRC filing for bankruptcy in 2020.

CRC currently has 15,451 total unplugged wells, with 43% of them idle. Plugging CRC’s idle wells would cost about $1.7 billion. In 2022, Occidental Petroleum earned $13.3 billion in profits, while California Resources Corporation earned $524 million. Plugging costs are about 10% of the combined profits for Occidental and CRC in 2022.