Geology, geography and global energy
Scientific and Technical Journal
Acidity Sostinskiy oil field of Kalmykia and its fractions
2014. №2, pp. 48-56
Erdnieva Olga G. - C.Sc. in Chemistry Associate Professor, Kalmyk State University, 11 Pushkin st., Elista, Republic of Kalmykia, 358000, Russian Federation, erdnieva_og@kalmsu.ru
Sangadzhiev Mergen M. - C.Sc. in Geology and Mineralogy, Associate Professor, Kalmyk State University, 11 Pushkin st., Elista, Republic of Kalmykia, 358000, Russian Federation, smm54724@yandex.ru
Basanova Saglara S. - Student, Kalmyk State University, 11 Pushkin st., Elista, Republic of Kalmykia, 358000, Russian Federation
This article is devoted to the determination of acidity Sostinskoe oil field (well no. 3, 8, 9) and some of its fractions. Determination of acid value was carried out by titrimetric method as used nitrozin indicator yellow. The essence of the method lies in the titration of the test product of the acidic compounds with an alcohol solution of potassium hydroxide in the presence of a color indicator and light oil for determining acidity, expressed in mg KOH/100 cm for oils and greases - acid number, expressed in mg KOH/g. The test oil has low acidity. In the sample wells no. 9 oil acids are absent. Getting gasoline, naphtha, kerosene and diesel fractions was carried out according to GOST 2177-99. Fractional distillation of crude oil was carried out at atmospheric pressure on the unit type Arns-1E. Acidity equal to 5 mg KOH per 100 ml of fuel. This is more than the above gasoline and kerosene. Studies have shown that oil distillate fractions of Sostinskiy field, wells no. 3, 8, characterized by a low content of oil acids. The content of oil acids does not exceed the standards set listed above state standards. The acidity of oil fractions wells no. 9 missing. All test oil and petroleum fractions correspond to state standards.
Key words: кислотность, кислотное число, нефтяные кислоты, нафтеновые кислоты, фракции нефти, цветной индикатор, гидроксид калия, pH, acid number, oil acids, naphthenic acids, oil fractions, colored indicator, potassium hydroxide
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