Sinclair is over 100 years old, but we couldn’t have lasted this long if we didn’t stay ahead of the times. We combine old-fashioned values with tomorrow’s technology for cleaner, more powerful products.
The Sinclair Refinery has become the most sophisticated refinery – and one of the largest – in the Rocky Mountain region. With gas oil hydrocracking, gas oil hydrotreating, delayed coking units, and the associated hydrogen generation and sulfur plant capacity, the refinery processes heavy sour crude into high-quality, low-sulfur gasoline and diesel fuels. We serve customers in Colorado, Idaho, Nebraska, Nevada, Oregon, Utah, Washington and Wyoming with a team continuously pursuing excellence in safety, environmental compliance, training and refinery utilization.
The Casper Refinery is an economic cornerstone for central Wyoming and one of the oldest refineries still operating in the Rocky Mountains today – now modernized to increase reliability and production while lowering sulfur levels. Near our central hub for crude oil supply, the refinery serves customers in Wyoming, Idaho, Utah, Nevada, Nebraska, Colorado, Montana and South Dakota. The Casper Refinery team has created a culture driven by excellence in production, reliability and safety.