Potential Basin-Centered Gas Accumulation in Cretaceous Trinidad Sandstone, Raton Basin, Colorado
Published:January 01, 1986
Peter R. Rose, John R. Everett, Ira S. Merin, 1986. "Potential Basin-Centered Gas Accumulation in Cretaceous Trinidad Sandstone, Raton Basin, Colorado", Geology of Tight Gas Reservoirs, Charles W. Spencer, Richard E. Mast
Download citation file:
The Raton basin of southern Colorado is geologically analogous to other Rocky Mountain Laramide basins that contain areally and volumetrically large accumulations of natural gas reservoired in tight Cretaceous and Tertiary sandstones and located in the deeper parts of the basins. Such basin-centered gas accumulations are recognized as a class distinct from conventional structural or stratigraphic traps. Based on geologic analogy, specific detailed geologic mapping, observed gas shows, and bore-hole log analysis, a basin-centered gas accumulation is postulated to exist in the deeper part of the Raton basin in the Trinidad Sandstone.
Figures & Tables
Geology of Tight Gas Reservoirs
Tight gas reservoirs occur in low-permeability, gas-bearing formations that are present to some extent in all gas-producing basins worldwide. This is the first volume to bring together data on tight reservoirs for a variety of basins and different geologic settings. The papers in this volume discuss characteristics of some of the most significant tight gas areas in the United States; however, these data are equally applicable to many other recognized and unrecognized tight gas provinces in other nations. In general, tight reservoirs in the United States are grouped into tight gas sandstones and eastern Devonian shales. The Devonian shale sequences are dominantly marine shale but include some siltstone and sandstone. Tight gas sandstone formations of other than Devonian age are present throughout the United States and consist primarily of fluvial and marine sandstones and siltstones. In addition, gas also occurs in low-permeability marine carbonate reservoirs. The 14 papers in this volume cover such topics as: coal-bed methane and tight gas sands interrelationships; gas-bearing shales in the Appalachian basin; exploration and development of hydrocarbons from low-permeability chalks; and geologic characterization of low-permeability gas reservoirs.