References
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Characteristics of Terrestrial Heat Flow and Lithospheric Thermal Structure in Typical Intermountain Basin at the Eastern Foot of Yanshan Mountain, North China
The Yanshan area is rich in geothermal resources. However, limited research has been done on the geothermal resources of intermountain basins in the area, which restrict the exploration and development of geothermal resources. In this study, the Yanheying Basin, a typical intermountain basin located in the eastern foothills of Yanshan Mountain, is selected to perform a comprehensive analysis regarding heat flow and lithospheric thermal structure, to have a better understanding of the geothermal background and resource utilization potential of the area. The methods of deep borehole temperature logging, and rock sampling and testing were applied. With geological and geophysical data …
Surface heat flow in Western Anatolia (Turkey) and implications to the thermal structureof the Gediz Grabenthe thermal structureof the Gediz
New heat flow data from the Veiholmen and Raudsand boreholes, middle Norway
Nature of Heat Flow Asymmetry on the Mid-Oceanic Ridges of the World Ocean
Statistical analysis of heat flow distribution along nine geotraverses crossing mid-oceanic ridges in the Atlantic, Pacific, and Indian oceans is carried out. Significant asymmetry of heat flow distribution is established: its mean values differ on opposite sides of ridge axes. In geotraverses of the Southern Hemisphere, their western flanks have a higher average heat flow, and on geotraverses of the Northern Hemisphere, the same is true of the eastern flank. Various tectonic factors leading to such a distribution are taken into account, but it is suggested that the universal cause of this regularity is the Coriolis effect, which, as the …
Regional variations in geothermal gradient and heat flow across the African plate
1813 geothermal gradient measurements from deep wells have been accessed across the African plate. Thermal conductivities based largely on North African sampling and publications have been used to either directly estimate heat flow from these or to calibrate other author's figures to form a standardised dataset. Variations seen in geothermal gradient can be due to lateral changes in lithology and thermal conductivity. The thermal regime of West Africa is shown to be consistent and featureless, with the exception of high heat flows over some igneous-influenced areas such as Senegal/Mauritania. Southern Africa is consistently thermally cold. More tectonically active regions in …
Estimation of Geothermal Gradient, Geothermal Heat Flux and Thermal Conductivity of Rocks in Western Niger Delta Using Well Log Data
Inversion of thermal conductivity and heat flow from borehole temperature data affected by recent variation in ground surface temperature
We inverted the thermal conductivity of earth material, heat flow, and ground surface temperature (GST) history from borehole temperature data obtained at the carbon dioxide capture and storage demonstration project site in Tomakomai, Japan, by Bayesian inverse analysis. Past GST change that had disturbed the underground temperature was treated as a heat source in inversion analysis to determine thermal conductivity of the earth material from borehole temperature and underground structure data. The inverted past GST change suggested an increase of GST by 3 K from 1800 to the present. The inverted thermal conductivity of the earth material appeared to correspond …
Terrestrial heat flow in the baiyinchagan sag, erlian Basin, northern China
The Baiyinchagan Sag of the Erlian Basin is a Mesozoic continental rift basin located in the eastern part of the Central Asian Orogenic Belt between the North China Craton and the Siberian Craton. The sedimentary fill comprises mainly the Cretaceous sandstones and mudstones underlying Cenozoic succession. Knowledge regarding the factors affecting the tectonic evolution of the Baiyinchagan Sag is lacking. The objective of this study is to obtain new terrestrial heat flow measurements in the Baiyinchagan Sag for constraints on its thermotectonic history. We obtained continuous temperature logs from three boreholes, namely Xi24, Xi3-76 and Xi30 with depths of 1230, …
Terrestrial heat flow and crustal thermal structure in the northern slope of Tazhong uplift in Tarim Basin
Considerable breakthroughs have been obtained recently in deep and ultra-deep carbonate strata of the northern slope of Tazhong uplift, which is characterized by a burial depth of more than 6300 m and is characterized by high burial temperature. However, the lack of systematic temperature research and effective temperature prediction for the ultra-deep strata in northern slope of the Tazhong has seriously restricted the petroleum exploration in the future. The continuous steady-state temperature logs and well test temperature were obtained, and the thermal conductivity were measured to analyze the current thermal state and deep thermal structure characteristics of the northern slope …
Analysis of Geothermal Resources in Three Texas Counties
This project updates the geothermal resources beneath our oil and gas fields, as part of the research for the Texas GEO project. This report "Analysis of Geothermal Resources in Three Texas Counties" (October 2020) improves on previous mapping of the Texas resources for the counties of Crockett (West Texas), Jackson (central Gulf Coast) and Webb (South Texas). Through additional bottom-hole temperatures (BHT), the number of well sites increased from 532 to 5,410 in total for these counties. The improved methodology to calculate formation temperatures from 3.5 km (11,500 ft) to 10 km (32,800 ft) includes thermal conductivity values more closely …
Heat flow estimates offshore Haiti in the Caribbean plate
Heat-flow in the Caribbean is poorly known and generally low in the major basins and the Greater Antilles arc, but with some high values in active zones, like in the Cayman trough or in the Lesser Antilles Arc. Here we present new heat-flow data for offshore Haiti, which is part of the Greater Antilles arc. We obtain new heat-flow estimates from in situ measurements and Bottom Simulating Reflector (BSR). Both methods suggest a regionally low heat-flow, respectively 46 +/- 7 and 44 +/- 12 mW/m(2), with locally high values exceeding 80 mW/m(2). The high heat-flow values are generally located near …
Deep basin temperature and heat-flow field in Denmark – New insights from borehole analysis and 3D geothermal modelling
We present a 3D numerical crustal temperature model with inverse optimisation methodology and analyse the present-day conductive thermal field of the Danish onshore subsurface. The model is based on a comprehensive analysis and interpretation of borehole and well-log data for thermal and petrophysical rock properties and their regional variability and spatial distribution across the country. New values of terrestrial surface heat flow derived from 21 deep well locations are 65–76 mW m−2 (mean: 72 ± 3) for the Danish Basin, 77–86 (81 ± 5) for the Danish part of the North German Basin, and 61–63 (62 ± 1) for the …
Update of Brazilian heat flow data, within the framework of a multiprong referencing system
Heat Flow and Seismicity in Bulgaria
Modeling and comparative analysis of a flow and heat coupling model of the riparian zone based on thermal conductivity empirical models
Recently, the use of heat as a tracer to evaluate the process of hyporheic exchange in riparian zones has attracted wide attention. A more accurate flow-heat coupling model of riparian zones could help us understand the patterns of water flow and heat transfer in riparian zones and provide a scientific basis for the comprehensive management and efficient utilization of these zones. In this paper, a flow-heat coupling model of a riparian zone based on thermal conductivity empirical models (TCEMs) was built by customizing partial differential equations (PDEs) based on the simulation of soil water flow using porous media and the …
Recovery and comparative research of thermal history on jiuquan basin group
Analysis of Geothermal Resources in Three Texas Counties
This project updates the geothermal resources beneath our oil and gas fields, as part of the research for the Texas GEO project. This report "Analysis of Geothermal Resources in Three Texas Counties" (October 2020) improves on previous mapping of the Texas resources for the counties of Crockett (West Texas), Jackson (central Gulf Coast) and Webb (South Texas). Through additional bottom-hole temperatures (BHT), the number of well sites increased from 532 to 5,410 in total for these counties. The improved methodology to calculate formation temperatures from 3.5 km (11,500 ft) to 10 km (32,800 ft) includes thermal conductivity values more closely …
The Franconian Basin thermal anomaly, SE Germany revised: New thermal conductivity and uniformly corrected temperature data
Heat flow variations in the Antarctic continent
Heat flow in the Western Mediterranean: Thermal anomalies on the margins, the seafloor and the transfer zones
The Western Mediterranean basin has been formed by Miocene back-arc extension and is underlain by a thin and young lithosphere. This young lithosphere is warm, as testified by an overall elevated offshore heat flow. Heat flow within the Western Mediterranean is, however, highly variable and existing data are unevenly distributed and poorly studied in the central part of the Liguro-Provençal and Algero-Balearic basins. This central part is floored by a young oceanic crust, bordered by different continental margins, cut by transform faults, and filled by up to 8 km of sediments. We present a total of 148 new heat flow …