Experimentally determined rock-fluid interactions applicable to a natural hot-dry-rock geothermal system

Conference · Thu Jan 01 04:00:00 EST 1981

OSTI ID:6548766

Charles, R W; Grigsby, C O; Holley, Jr, C E; Tester, J W; Blatz, L A

The field program cnsists of experiments in which hot rock of low permeability is hydraulically fractured between two wellbores. Water is circulated from one well to the other through the fractured hot rock. Our field experiments are designed to test reservoir engineering parameters such as heat-extraction rates, water-loss rates, flow characteristics including impedance and buoyancy, seismic activity, and fluid chemistry. Laboratory experiments were designed to provide information on the mineral-water reactivity encountered during the field program. Two experimental circulation systems tested the rates of dissolution and alteration during dynamic flow. Solubility of rock in agitated systems was studied. Moreover, pure minerals, samples of the granodiorite from the actual reservoir, and Tijeras Canyon granite have been reacted with distilled water and various solutions of NaCl, NaOH, and Na/sub 2/CO/sub 3/. The results of these experimental systems are compared to the observations made in field experiments done within the hot dry rock reservoir at a depth of approximately 3 km where the initial rock temperature was 150 to 200/sup 0/C.

• Research Organization: Los Alamos National Lab., NM (USA)
• OSTI ID: 6548766
• Report Number(s): LA-UR-81-534; CONF-810618-1
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150904 -- Geothermal Engineering-- Geothermal Reservoir & Well Performance
152001* -- Geothermal Data & Theory-- Properties of Aqueous Solutions
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM SILICATES
ANORTHOSITES
AQUEOUS SOLUTIONS
BIOTITE
CALCIUM COMPOUNDS
CALCIUM SILICATES
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHLORIDES
CHLORINE COMPOUNDS
CHLORITE MINERALS
DATA
DISPERSIONS
ENERGY SYSTEMS
ENGINEERING
EPIDOTES
EXPERIMENTAL DATA
FELDSPARS
FLOW RATE
GABBROS
GEOTHERMAL SYSTEMS
GEOTHERMOMETRY
GRANITES
GRANODIORITES
Geothermal Legacy
HALIDES
HALOGEN COMPOUNDS
HEAT EXTRACTION
HOT-DRY-ROCK SYSTEMS
HYDROGEN COMPOUNDS
HYDROTHERMAL ALTERATION
HYDROXIDES
IGNEOUS ROCKS
INFORMATION
IRON COMPOUNDS
IRON SILICATES
MICA
MICROCLINE
MINERALS
MIXTURES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PLUTONIC ROCKS
QUARTZ
RESERVOIR ENGINEERING
ROCK-FLUID INTERACTIONS
ROCKS
SILICA
SILICATES
SILICON COMPOUNDS
SILICON OXIDES
SODIUM CARBONATES
SODIUM CHLORIDES
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SOLUBILITY
SOLUTIONS
SOLVENT PROPERTIES
TEST FACILITIES
TRANSITION ELEMENT COMPOUNDS