Bakhar gas, gas condensate, and petroleum field
BAKHAR GAS, GAS CONDENSATE, AND PETROLEUM FIELD (RU: Бахарское месторождение) is situated within the Azerbaijanian SSR, within the water area of the Caspian sea, at the distance of 35 kilometres from the Baku city to the south-east. It belongs to the South Caspian petroleum-and-gas-bearing province. It is controlled by the brachyanticline, which is complicated by the disorders, and is confined to the Fatmayi-Zykh anticlinal belt.
It has been discovered during the 1968, and is being developed since the 1969. There have been identified 8 reservoirs within the depositions of Pliocene at the depth of 3600-4800 metres. The reservoirs are tabular vaulted, tectonically screened. The collectors are porous (sandstones and siltstones), the porosity is 14-20%, the permeability is up to 180 millidarcies. The effective thickness is 20-36 metres. The gas-water contact of the upper reservoir is 3610 metres, of the lower one is 5050 metres. The initial reservoir pressure corresponds to the hydrostatic one, the temperature is 82-100 degrees Celsius. The composition of the gas (%) is: CH4 is 94.7-96.6; C2H6 + higher are 3.25-5.0; CO2 is 0.05-0.2. The density of the gas is 0.580-0.600 (in relation to the air at 20 degrees Celsius), the density of the condensate is 760-800 kilograms per cubic metre, the content of S is up to 0.03%. The petroleum contains 0.16% of S, and up to 23% of the paraffin wax; the density of the petroleum is 863 kilograms per cubic metre. The centre of the extraction is the Baku city.
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