Sedimentary Geothermal Resources in Nevada, Utah, Colorado, and Texas

Assessing Low-Temperature Geothermal Play Types: Relevant Data and Play Fairway Analysis Methods

“…Recently, there is interest in harnessing geothermal energy from sedimentary basins for electricity production (Porro et al 2012) and/or direct use for heating and cooling. A sedimentary basin consists of a stratigraphic sequence that, when associated with oil and gas production, provides the opportunity to use existing information and technologies from the petroleum industry to develop geothermal resources (Johnston et al 2020). For instance, well logs, temperature gradients, and reservoir properties such as formation thickness are widely known from hydrocarbon exploration.…”

Life Cycle Greenhouse Gas Emissions of CO2-Enabled Sedimentary Basin Geothermal

“…24 In contrast, CO 2 -plume geothermal (CPG) systems operate in naturally porous and permeable reservoirs in sedimentary basins and do not require hydraulic fracturing. 16,25 Sizable and relatively shallow natural reservoirs overlain by an impermeable caprock can often be found in sedimentary basins worldwide, 26,27 including the Gulf Coast 28 and Southern Rocky Mountains 29,30 in the United States. Several studies have addressed the technical and economic performance of CPG systems.…”

“…Despite the relatively low specific heat of CO 2 , its high mobility (ratio of density to viscosity) makes supercritical CO 2 a more efficient heat extraction fluid and less likely to form blocked fluid pathways from mineral participation in GCS reservoirs. , The use of CO 2 for geothermal heat extraction was first proposed in the context of enhanced geothermal systems (CO 2 -based EGSs). − However, the EGS relies on contentious hydraulic stimulation to enhance permeability and fluid connectivity . In contrast, CO 2 -plume geothermal (CPG) systems operate in naturally porous and permeable reservoirs in sedimentary basins and do not require hydraulic fracturing. , Sizable and relatively shallow natural reservoirs overlain by an impermeable caprock can often be found in sedimentary basins worldwide, , including the Gulf Coast and Southern Rocky Mountains , in the United States.…”