Abstract

The regional geothermal pattern of Egypt has been previously defined from bottom hole temperature data inside oil wells in Northern Egypt and Gulf of Suez. For the same objective, geothermal gradient/heat flow determinations have also been conducted inside existing mineral exploration and water wells in Eastern Egypt and in Kharga Oasis in Western Desert as well as inside specially drilled regional gradient shallow boreholes in Eastern Egypt. To complement the regional geothermal picture in the southern part of Egypt, temperatures were measured inside seven water wells in a remote area in the south Western Desert at East Oweinat. The average calculated temperature gradient was found to amount to 12 mK/m, a value similar to that obtained from bottom hole temperature/depth relationship of deep artesian wells at Dakhla Oasis 300 km to the north, but much less than the normal gradient amounting to 20 mK/m in Northern Egypt. The data obtained emphasize the extension of the low heat flow province of the Mediterranean north of Egypt to its southern border with Sudan. A distribuição regional de fluxo geotérmico no Egito foi previamente definida a partir de temperaturas de fundo de poço medidas em poços de petróleo no norte do Egito e no golfo de Suez. Com o mesmo objetivo, determinações de gradientes térmicos e de fluxo de calor foram realizadas em poços para exploração mineral e de água no leste do Egito e no oásis de Kharga no deserto ocidental, assim como em poços rasos especialmente perfurados no leste do Egito. Para complementar a representação do fluxo térmico regional na parte sul do Egito, foram medidas temperaturas em sete poços de água em uma área remota no deserto do sudoeste em East Oweinat. O gradiente térmico médio encontrado é de 12 mk/m, valor similar ao obtido a partir de relações de temperatura de fundo de poço/profundidade de poços profundos no oásis de Dakhla 300 quilômetros mais ao norte, mas muito inferior ao gradiente geotérmico normal de 20 mk/m encontrado no norte do Egito. Os dados obtidos enfatizam a extensão da província de baixo fluxo térmico do norte mediterrâneo do Egito para a sua fronteira sul com o Sudão.

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