IDDP鈥擳he chemistry of the IDDP-01 well fluids in relation to the geochemistry of the Krafla geothermal system

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• 作者：Halld贸r 脕rmannsson ; Thr谩inn Fridriksson ; Gudmundur H. Gudfinnsson ; Magn煤s 脫lafsson ; Finnbogi 脫skarsson ; Dadi Thorbj枚rnsson
• 关键词：IDDP ; Krafla ; Geochemistry ; Acid well fluids
• 刊名：Geothermics
• 出版年：January, 2014
• 年：2014
• 卷：49
• 期：Complete
• 页码：66-75
• 全文大小：4179 K

文摘

The Leirbotnar field, where IDDP-01 is situated consists of an upper liquid dominated zone to 1000-1400 m depth, 190-220 掳C, sulphate major anion, and a lower two phase zone, 300 掳C chloride main anion. The IDDP-01 fluid is dry steam, local origin, pH 3. The major anion is chloride (20-166 mg/kg), probably of magmatic origin. The major metallic cations, Fe (5-100 mg/kg), Cr (0-6 mg/kg), Ni (0-5 mg/kg) and Mn (0.1-0.8 mg/kg) seem to be derived from the well casing and sampling equipment. The gas content is low (about 0.1%) and the gas is apparently not directly emitted from magma.