On April 19, 1880, California’s first commercially successful oil well was patented, just west of present-day Santa Clarita.

That moment put the region on the map and helped usher in California’s oil boom.

The well was more than a stroke of luck; it was also a moment of innovation. The success of Pico Oil Spring Mine Section Two wasn’t just due to good geology.

It was backed by a U.S. patent, granted for a mechanical method of oil drilling that enabled deeper, more efficient drilling.

The well was operated by Charles Mentry for the California Star Oil Works Company, which later became part of Standard Oil of California, today known as Chevron.

Land office records show that five placer claims were originally staked in Pico Canyon, meaning that five separate claims were made (marked and recorded) for mining.

One of them, the Pico Oil Spring Mine, located in Section Two, Township 3 North, Range 17 West, was officially patented on April 19, 1880, to Robert F. Baker and E.F. Beale. Two of the remaining claims were later patented in 1890 to the Occidental Asphalt Company.

This 1880 patent symbolized the beginning of the industrialization of oil extraction in the West.

Mentry’s use of steam-powered technology, unique for the time, gave Pico Oil Spring Mine Section Two an edge, allowing it to become the first oil well in California to produce commercially viable quantities over an extended period.

The patent helped secure investor confidence, drawing attention and resources to the Santa Clarita Valley, and laid the groundwork for oil to become one of California’s key industries.

Pico No. 2 would pump steadily until 1938, producing over 100,000 barrels of oil in its lifetime.

The oil was first transported by wagon, then via one of the state’s earliest oil pipelines, which wound its way from Pico Canyon to a refinery in Newhall, the first successful commercial refinery in California.

But oil interests didn’t stay confined to Pico Canyon.

By the 1920s, curiosity turned to Newhall itself.

In 1924, as developers were preparing to sell land in Wildwood Canyon, concerns surfaced that the land might hold oil.

So next time you pass through Newhall or hike the trails of Mentryville, remember — this region’s roots run deep. And 144 years ago today, those roots struck oil.

To read yesterday’s Today in SCV History, click here.