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・ Batán District
・ Batán Grande Reserved Zone
・ Batán River
・ Batáquez
・ Batça, Beypazarı
・ Batèë Iliëk
・ Baté
・ Baté Empire
・ Batéké Plateau
・ Batéké Plateau National Park
・ Batîr
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・ Batı Kozluca oil field
Batı Raman oil field
・ Batı Çalışma Grubu
・ Batıbelenören, Yenipazar
・ Batıkan
・ Batıkent, Yenimahalle
・ Batıköy, Didim
・ Batısandal
・ Batňovice
・ Bau
・ Bau (album)
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・ Bau (musician)
・ Bau (village)
・ Bau Airport
・ Bau Dham


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Batı Raman oil field : ウィキペディア英語版
Batı Raman oil field

The Batı Raman oil field (''batı'' meaning ''west'' in Turkish) is located in the Batman Province, in the Southeastern Anatolia Region of Turkey. With the estimated reserves of 1.85 billion barrels (252×106 tonnes) and a production rate of around from 204 wells (as of 2007), this is the largest and most productive oil field in Turkey.
The field is 17 km long and 2–4 km wide and is oriented from east to west. It is located a few kilometers south from the city of Batman, with the Raman oil field lying to the east. The Batman River is flowing nearby, on the western side of the Batman city. These two fields are separated by a narrow fault system.
The oil is classified as heavy. It has a density of 9.7–15 API (1.002–0.966 g/cm3, 12 API or 1 g/cm3 on average) and a viscosity of 450–1000 cP. Oil is located at an average depth of 1310 meters〔 and is capped by a layer of Garzan Limestone – a carbonate of Cretaceous period. The layer is about 64 m (210 ft) thick and lies at a depth of about 1320 m, it has an average porosity of 18%. Its measured permeability of 200–500 mD is higher than calculated bulk values of 10–100 mD indicating presence of numerous cracks and fractures. The layer is rather heterogeneous, both laterally and vertically.〔〔
The field was discovered in 1961 and developed by Türkiye Petrolleri Anonim Ortaklığı. Oil production began in 1962 at a rate of and rapidly increased to in 1969 but then declined. The major oil production mechanism was expansion of fluid, which was pressurized to about 1800 psi, but the pressure dropped to about 400 psi due to extraction. Considering the high density and viscosity of the oil, only 1.5% of the deposit could be extracted by the natural mechanism and this limit was quickly exhausted – about (5%) of oil has been recovered from the field by 2007. The pressure was raised by injecting water and later carbon dioxide. About of water were pumped into the field in the period of 1971–1978, followed by CO2 injection in 1987. This increased production after 1987, which peaked at in 1993 and is gradually declining since then. Only about 20 wells were drilled by 1967 but a hundred new ones were added by 1969. Some wells were abandoned then and their total number decreased to about 90 in 1987 but then was gradually raised again to about 200 by 1995. The productivity of most wells is close to .〔〔
==References==



抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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