The radioactive elements of oil and of derrick water in several oil mines of Apsheron peninsula

It is known that oil extracted from deep strata of the ground directly contacts with minerals and ores and it is a carrier of several radioactive elements. Radio-ecological investigations conducted in several oil mines of Apsheron peninsula, show that there are radioactive elements, such as uranium, radium, thorium and radon in the structures of oil and derrick water. Amount of these radioactive elements is changeable depending on the chemical structures of oil and derrick water. So, amount of uranium in the structure of naften (aromatic oil) is more, than in the structure of oil with paraffin. Besides, migration of uranium from strata water to oil leads to increasing the amount of uranium. Radio spectro metrical analysis of oil and derrick water extracted from the territories of Surahany, Sabunchi, Balahany, Qaradah, Bayil and Romana located in the Apsheron peninsula was conducted by us. Amount of the radioactive elements in specimens of oil are distributed in the following way: Uranium - 2.3 - 13.6 ·10-7 g/kg; Radium - 1.2 - 3.5 ·10-12 g/kg; Thorium - 8.2 - 17.0 ·10-7 g/kg. Amount of the radioactive elements in derrick water are: Uranium - 1.2 - 4.5 ·10-6 g/l; Radium - 2.5 - 3.2· 10-11 g/l; Thorium - 1.1 - 3.1 ·10-7 g/l.. There are ponds around the derricks, which are source of radioactive pollution in most of the oil mines. It was found that level of radiation is about 150-500 micro R/h in these ponds and near of the derricks