Patterson-UTI Drilling Company LLC and its subsidiaries operate land based drilling rigs primarily in oil and natural gas producing regions of the continental United States, Alaska, and western and northern Canada. We serve major and independent oil and gas companies to provide a comprehensive drilling solution, including APEX® drilling rigs and crews who are committed to working safely, efficiently and in an environmentally responsible way, all of which makes Patterson-UTI Drilling the perfect choice for your drilling needs.