Assessment of the Enhanced Geothermal System Resource Base of the United States

Blackwell, David; Negraru, Petru; Richards, Maria

doi:10.1007/s11053-007-9028-7

Cited by 128 publications

(75 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The model assumptions of the temperature model in this study are similar to the protocol proposed by Beardsmore et al (2010), but a 3-D finite difference method is used to solve the boundary value problem and to generate a steadystate solution for the temperature. The methodology of the protocol was based on earlier work of Tester (2006) and has been used to assess the geothermal potential of the USA (Blackwell et al, 2007). When data are scarcely available it is a fast way to generate an adequate temperature model for a large area such as Europe or the USA.…”

Section: Methodology Model Geometry and Property Distributionmentioning

confidence: 99%

See 1 more Smart Citation

Assessing the prospective resource base for enhanced geothermal systems in Europe

et al. 2014

View full text Add to dashboard Cite

Abstract. In this study the resource base for EGS (enhanced geothermal systems) in Europe was quantified and economically constrained, applying a discounted cash-flow model to different techno-economic scenarios for future EGS in 2020EGS in , 2030EGS in , and 2050. Temperature is a critical parameter that controls the amount of thermal energy available in the subsurface. Therefore, the first step in assessing the European resource base for EGS is the construction of a subsurface temperature model of onshore Europe. Subsurface temperatures were computed to a depth of 10 km below ground level for a regular 3-D hexahedral grid with a horizontal resolution of 10 km and a vertical resolution of 250 m. Vertical conductive heat transport was considered as the main heat transfer mechanism. Surface temperature and basal heat flow were used as boundary conditions for the top and bottom of the model, respectively. If publicly available, the most recent and comprehensive regional temperature models, based on data from wells, were incorporated.With the modeled subsurface temperatures and future technical and economic scenarios, the technical potential and minimum levelized cost of energy (LCOE)

show abstract

Section: Methodology Model Geometry and Property Distributionmentioning

confidence: 99%

“…The first large-scale resource assessment for EGS was conducted for the United States (Tester, 2006;Blackwell et al, 2007). More recently, an updated resource assessment for the United States from (Williams et al, 2008) has been combined with a development cost model to create resource supply curves (Augustine et al, 2010;Augustine, 2011).…”

Section: Introductionmentioning

confidence: 99%

Assessing the prospective resource base for enhanced geothermal systems in Europe

et al. 2014

View full text Add to dashboard Cite

show abstract

“…The calculation of deep temperature from the geothermal gradient values is different from common methods used by Blackwell et al [35], Wang et al [36], and other researchers. The computing process has not considered the radiogenic heat production within 5 km.…”

Section: Temperature Extrapolationmentioning

confidence: 95%

Estimate of Hot Dry Rock Geothermal Resource in Daqing Oilfield, Northeast China

et al. 2016

View full text Add to dashboard Cite

Development and utilization of deep geothermal resources, especially a hot dry rock (HDR) geothermal resource, is beneficial for both economic and environmental consideration in oilfields. This study used data from multiple sources to assess the geothermal energy resource in the Daqing Oilfield. The temperature logs in boreholes (both shallow water wells and deep boreholes) and the drilling stem test temperature were used to create isothermal maps in depths. Upon the temperature field and thermophysical parameters of strata, the heat content was calculated by 1 km × 1 km × 0.1 km cells. The result shows that in the southeastern part of Daqing Oilfield, the temperature can reach 150 • C at a depth of 3 km. The heat content within 3-5 km is 24.28 × 10 21 J, wherein 68.2% exceeded 150 • C. If the recovery factor was given by 2% and the lower limit of temperature was set to be 150 • C, the most conservative estimate for recoverable HDR geothermal resource was 0.33 × 10 21 J. The uncertainties of the estimation are mainly contributed to by the temperature extrapolation and the physical parameter selections.

show abstract

“…To compute the available heat content of the area, temperature at depth was calculated from the heat flow at depths from 3 to 10 km (Tester and others, 2006;Blackwell, Negraru, and Richards, 2007). The basic dataset from which the temperature was computed was the U.S. surface heat flow database.…”

Section: Implications For the Geothermal Potential Temperature And Hementioning

confidence: 99%

“…Among them geothermal energy plays an important role. Geothermal exploitation is usually associated with resources located in the western United States, where high temperatures may be encountered over large regional areas (Blackwell, Negraru, and Richards, 2007), but in general only high-grade (in excess of 150°C) geothermal resources are exploited. Yet areas east of Rocky Mountains possess an important geothermal potential.…”

Section: Introductionmentioning

confidence: 99%

Heat Flow and Geothermal Potential in the South-Central United States

Blackwell

Erkan

2008

Nat Resour Res

Self Cite

View full text Add to dashboard Cite

Geothermal exploration is typically limited to high-grade hydrothermal reservoirs that are usually found in the western United States, yet large areas with subsurface temperatures above 150°C at economic drilling depths can be found east of the Rocky Mountains , which is associated with the apparently highly radioactive basement of the Sabine uplift. The geothermal resource in this area is large and diverse, and can be divided in high grade (temperature above 150°C) convective systems, conductive based enhanced geothermal systems and geothermal/geopressured systems. One of the most attractive areas east of the cordillera extends from eastern Texas across Louisiana and Arkansas to western Mississippi. Here temperatures reach exploitation range at depths below 4 km, and tapping such a resource from shut in hydrocarbon fields is relatively easy. The initial costs of the development can be greatly reduced if existing hydrocarbon infrastructure is used, and therefore using shut-in hydrocarbon fields for geothermal purposes should not be neglected.

show abstract

Assessment of the Enhanced Geothermal System Resource Base of the United States

Cited by 128 publications

References 24 publications

Assessing the prospective resource base for enhanced geothermal systems in Europe

Assessing the prospective resource base for enhanced geothermal systems in Europe

Estimate of Hot Dry Rock Geothermal Resource in Daqing Oilfield, Northeast China

Heat Flow and Geothermal Potential in the South-Central United States

Contact Info

Product

Resources

About