About Us

Welsco Drilling Corporation began operation with an old cable tool back in 1973. The Corporation continued to drill water wells and provide pump services until the early 80s where work began with its first geothermal steam project.

Since that time Welsco has honed its skills in the Geothermal Steam arena. Welsco has also completed a multitude of water well projects and has added a 24-hour pump service. Additionally, Welsco has drilled for gas, oil and lithium. We are proud to foster a family environment within our corporation while supporting and encouraging our team to do the same. Our highly skilled and qualified team looks forward to providing you with our best.

We are all about family and building long-lasting relationships.

Meet the men and women who make up the Welsco Drilling team. 

Jesus “Augie” Mariezcurrena


The Mariezcurrenas

Danielle Mariezcurrena

Owner/Safety Coordinator

Dave Anderson


Troy Holbrook


Dan Haddox

Shop Foreman/Mechanic

Jay Cicchetto

Pump Technician

Hector Robles

Drillers Helper

Pete Kulick

Drillers Helper