Navajo Nation Oil and Gas Company (NNOGC) is a fully integrated oil and gas company. Navajo Petroleum is the official brand o ... f NNOGC. The corporate headquarters in St. Michaels, Arizona. The company's Downstream Retail/Wholesale operations is managed from the corporate offices. NNOGC's Midstream Running Horse Pipeline operations is operated from its Montezuma Creek, Utah and Farmington, New Mexico offices. Since 2008, Upstream operations primarily operated from offices downtown Denver, Colorado. NNOGC recently setup Upstream operations in Farmington, New Mexico to be located near its operating properties in the Paradox Basin and San Juan Basin. read more