MS-26 Oil and Gas Fields Map of Colorado, 1991 Download Publication Details Oil and gas fields map of Colorado showing basin outlines; field names; producing formations and their predominant ages; water disposal wells; gas injection wells; storage projects; oil, gas, and products pipelines; refineries; and gas processing plants. Field discoveries are current through December 1990. 1 color plate (1:500,000). Digital PDF download. MS-26D This map is an update of the prior Map Series MS-22 published in 1983. This map was later updated by Map Series MS-33 in 2003. Citations Smith, J. R., et al. MS-26 Oil and Gas Fields Map of Colorado. Colorado Geological Survey, Department of Natural Resources, 1991, https://coloradogeologicalsurvey.org/publications/oil-gas-fields-map-colorado-1991.