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IJSTR >> Volume 6 - Issue 7, July 2017 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Geothermic Characters Of The Most Promising Geothermal Filed For Power Generation In Republic Of Yemen

[Full Text]



Al Kubati M., Al Qraafi Fahd, Mattash M., Al nethary M.,



Geothermal exploration, Thermal springs, Thermal wells , Geothermometrics,Ymen geothermal , geochemically analyzed,and Deep geothermal .



This paper presents geothermal exploration and their geothermometric characteristics in the western part of Yemen. Geologically this volcanic province totals areas approximately 45,000 km2. Tectonically the study area is considered one of the most active in the Arabian Plate boundaries that affected by the opening of the Red Sea and the Gulf of Aden as well as by the African rift valley. Extensive field work had been carried out to evaluate the geothermal characteristics of this area. Water and gas samples were collected from hundreds of thermal springs and shallow domestic wells and geochemically analyzed and reported. Temperatures and PH values range from 35 to 96.3 °C and from 4.5 to 8.5 respectively. Deep geothermal gradient indicates that the geothermal gradients in the western part of the province (Red Sea coast) are relatively high up to 182 °C at the depth of 3290 m. Volcanic units are affected by hydrothermal processes and became intensively altered. By applying geothermometric methods, four geothermal fields have been primarily identified, they are: Al-Lisi and Isbil (Dhamar province); Al-Qafr (Ibb province); Damt (Dhala province) and the Red Sea coast geothermal fields and three water types were recognized which are Na-HCO3-Cl-S and Ca-Na-Cl and Na –HCO3.Results from Al-Lisi and Isbil geothermal area are considered the most promising field. Geothermal detail studies have been achieves and location of the first geothermal exploration well is located in Al-Lisi and Isbil field.By applyig geophisical methods Iso- Resistivity contour maps,these maps reflected high resistivity areas and low.Clearly shows the low resistivity values incentral and Western part of the study area about 11Ωm,While up Resistivity values to the area in the eastern 600Ωm.Also through the use ofthe different current electrode spacing (AB/2) 700, 1000, 1500, and 2000m.We find the low- Resistivity areas becoming more widespread and concentrated in the center of the study area and shrink high - Resistivity areas.Indicating increased electrical conductivity with increasing depth.



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