Characterization of deep ground geothermal field in Jiahe Coal Mine

2011 ◽  
Vol 21 (3) ◽  
pp. 371-374 ◽  
Author(s):  
Yi Zhang ◽  
Dongming Guo ◽  
Manchao He ◽  
Yaodong Jiang ◽  
Qing Yang
Keyword(s):  
Coal Mine ◽  
Geothermal Field

Characterization of coal-mine refuse as backfilling material

1996 ◽  
Vol 14 (2) ◽  
pp. 129-150 ◽  
Author(s):  
M. G. Karfakis ◽  
C. H. Bowman ◽  
E. Topuz
Keyword(s):  
Coal Mine

scholarly journals Spatial and temporal multiplet analysis for identification of dominant fluid migration path at The Geysers geothermal field, California

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
M. Staszek ◽  
Ł. Rudziński ◽  
G. Kwiatek
Keyword(s):  
Temporal Analysis ◽  
Geothermal Field ◽  
Fluid Injection ◽  
Fluid Migration ◽  
Multiple Events ◽  
Spatial And Temporal Analysis ◽  
Hydraulic Conditions ◽  
The Geysers ◽  
Multiplet Analysis

AbstractMultiplet analysis is based on the identification of seismic events with very similar waveforms which are used then to enhance seismological analysis e.g. by precise relocation of sources. In underground fluid injection conditions, it is a tool frequently used for imaging of subsurface fracture system. We identify over 150 repeatedly activated seismic sources within seismicity cluster induced by fluid injection in NW part of The Geysers geothermal field (California). Majority of multiple events (ME) occur along N–S oriented planar structure which we interpret as a fault plane. Remaining ME are distributed along structures interpreted as fractures, forming together a system of interconnected cracks enabling fluid migration. Temporal analysis reveals that during periods of relatively low fluid injection the proportion of ME to non-multiple events is higher than during periods of high injection. Moreover, ME which occur within the fault differ in activity rate and source properties from ME designating the fractures and non-multiple events. In this study we utilize observed differences between ME occurring within various structures and non-multiple events to describe hydraulic conditions within the reservoir. We show that spatial and temporal analysis of multiplets can be used for identification and characterization of dominant fluid migration paths.

scholarly journals Characterization Of Coal Acid Water In Void Pools Of Coal Mining In South Kalimantan

2018 ◽  
Vol 73 ◽  
pp. 05030
Author(s):  
Kiswanto ◽  
Heru Susanto ◽  
Sudarno
Keyword(s):  
Coal Mining ◽  
Coal Mine ◽  
Ph Value ◽  
Liquid Waste ◽  
Quality Standards ◽  
Field Work ◽  
Acid Water ◽  
Acidic Water ◽  
Mine Acid

This study aims to determine the characteristics of acidic water derived from void coal mine by taking samples from voids located in South Kalimantan. Method used in this research was field work and laboratory work. The result of measurement of acid characterization of coal mine acid was analyzed to have the highest pH value of 4.01, the highest temperature was 33.9 oC, the highest Color was 3.01 NTU, the highest COD was 56.50 ppm, the highest BOD was 20,34 ppm , The highest DHL of 1 us, the highest TSS of 652.67 ppm, the highest Fe of 9.46 ppm, the highest Mn of 1.72 ppm and the Cd content is still below the defined standard of less than 0.01 ppm. Decree of the State Minister of Environment No. 113 of 2003 on Liquid Waste Quality Standards for Coal Mining.

Mineralogical characterization of silica sinters from the El Tatio geothermal field, Chile

2008 ◽  
Vol 93 (8-9) ◽  
pp. 1373-1383 ◽  
Author(s):  
M. Garcia-Valles ◽  
J.L. Fernandez-Turiel ◽  
D. Gimeno-Torrente ◽  
J. Saavedra-Alonso ◽  
S . Martinez-Manent
Keyword(s):  
Geothermal Field ◽  
Mineralogical Characterization

scholarly journals Groundwater Chemistry and Overpressure Evidences in Cerro Prieto Geothermal Field

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Ivan Morales-Arredondo ◽  
María Aurora Armienta ◽  
Nuria Segovia
Keyword(s):  
Water Samples ◽  
Evolutionary Process ◽  
Geothermal Field ◽  
Geological Characteristics ◽  
Physical Chemical ◽  
Geothermal Wells ◽  
Cerro Prieto ◽  
Diagenetic Evolution ◽  
Brine Evolution

In order to understand the geological and hydrogeological processes influencing the hydrogeochemical behavior of the Cerro Prieto Geothermal Field (CP) aquifer, Mexico, a characterization of the water samples collected from geothermal wells was carried out. Different hydrochemical diagrams were used to evaluate brine evolution of the aquifer. To determine pressure conditions at depth, a calculation was performed using hydrostatic and lithostatic properties from CP, considering geological characteristics of the study area, and theoretical information about some basin environments. Groundwater shows hydrogeochemical and geological evidences of the diagenetic evolution that indicate overpressure conditions. Some physical, chemical, textural, and mineralogical properties reported in the lithological column from CP are explained understanding the evolutionary process of the sedimentary material that composes the aquifer.

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