Results 251 to 260 of about 2,171,272 (296)

Seismic shifts in the geochemical and microbial composition of a Yellowstone aquifer. [PDF]

PNAS Nexus
Boyd ES, Colman DR, Menchaca A, Spietz RL, Shoemaker A, Finn C, Mencin D, Andrade-Barahona E, Cox A, Kieft T, Bilek S, Hungerford J, Onstott TC.   +12 more
europepmc   +1 more source

Formation of the Structure and Properties of Building Ceramics Based on Coal Ash and Metallurgical Slags: A Review of Modern Research. [PDF]

Materials (Basel)
Yelubay M, Vakalova T, Tolegenov D, Maussumbayev S, Kanasheva N, Aitkaliyeva G, Massakbayeva S.   +6 more
europepmc   +1 more source

Research on the Functional Group Changes of Coal under the Erosion of High Temperature Airflow. [PDF]

ACS Omega
Liu C, Jia B.
europepmc   +1 more source

Enhanced RNA Formation Under Amine-Rich Local Atmospheres from 2’,3’-Cyclic Nucleotides

Schmid A, Kovařík A, Hintz J, Wunnava S, Palacký J, Krepl M, Šedo O, Havel Š, Ślepokura K, Šponer J, Mojzeš P, Mast CB, Zdráhal Z, Braun D, Šponer JE.   +14 more
europepmc   +1 more source

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The wellbore instability mechanism in hot dry rock drilling

Geoenergy Science and Engineering, 2023
Xiaohua Zhu
exaly   +2 more sources

Drilling for hot dry rock reservoirs

Geothermics, 1987
Abstract The drilling group evaluated techniques suitable for drilling inclined boreholes, of controlled geometry, to reach temperatures of 200–250°C in crystalline rock. They concluded that there is no fundamental reason why holes for HDR projects cannot be drilled and completed successfully using techniques already available, and that further ...
AJ Beswick, G Baron, JD Garnish
openaire   +1 more source

The U.S. hot dry rock project

Geothermics, 1987
Abstract Early attempts to hydraulically fracture and connect two wells drilled at the Hot Dry Rock (HDR) site at Fenton Hill in New Mexico produced a large volume of fractured rock, but no connection. Microearthquakes triggered by fracturing indicated that the stimulated rock zones grew in unexpected directions.
John T Whetten, Bert R Dennis, Donald S Dreesen, Leigh S House, Hugh D Murphy, Bruce A Robinson, Morton C Smith   +6 more
openaire   +1 more source

Geothermal reservoirs and hot dry rock systems

1999
Most geothermal reservoirs and hot dry rock (HDR) systems are located in fractured low porosity geological formations. In such settings, fractures provide conduits for fluid flow through such rocks. Therefore fractures, either natural or those artificially created, are important for the successful operation of geothermal reservoirs and HDR systems.
B. B. S. Singhal, R. P. Gupta
openaire   +1 more source

Heat extraction from hot, dry, crustal rock

pure and applied geophysics, 1978
Natural heat stored in the earth’s interior represents an essentially inexhaustible energy supply which, at usefully high temperatures, is accessible at practical drilling depths from almost anywhere on the earth’s land surface. The problems of extracting and using this heat are those of engineering and economics, and can be expected to vary with the ...
openaire   +1 more source