Determination of aromatic hydrocarbons in Sostinskoе oil field
This article is devoted to the study of the patterns of distribution of aromatic hydrocarbons at a fraction of the IBP up to 150 °C oil field Sostinskoe wells number 3, 8, 9. Group hydrocarbon composition oil field Sostinskoe was determined by aniline points (GOST 12329-77). It is established that in the narrow fractions 60–95 ºC oil field Sostinskoe, wells number 3, 8, 9, the predominant class of hydrocarbons are alkanes (84.04, 85.46 and 86.89 %, respectively), followed by the arenas (15.96, 14.54 and 13.11 % respectively), naphtha no. In the fraction of 95–122 °C the predominant class of hydrocarbons are alkanes (55.10, 57.75 and 60.40 %, respectively) followed by naphthenes (28.38, 24.25 and 20.13 %, respectively) and Arena (16.52, 18.00 and 19.47 %, respectively). In the fraction of 122–150 º C are the predominant class of alkane hydrocarbon (55.09, 56.14 and 57.19 %, respectively) followed by naphthenes, (29,66, 28,91 and 28,17%, respectively) and arenas (15,25, 14.95 and 14.64 %). In the fraction of 150–200 ºC are the predominant class of alkane hydrocarbon (66.54, 55.82 and 45.10 %, respectively) followed by naphthenes, (22.18, 31.49 and 40.80 %, respectively) and arenas (11.28, 12.69 and 14.10 %, respectively). Total fraction of from 60 to 200 ºC are the predominant class of alkane hydrocarbon (65.19, 63.79 and 62.39 %, respectively) followed by naphthenes (20.06, 28.22 and 22.28 %, respectively) and arenas (14.75, 15.04 and 15.33 %, respectively). The relative distribution of C8 aromatic hydrocarbons in the fraction of the IBP up to 150 °C was examined by gas chromatography. In the fraction of the IBP up to 150 ° C oil field Sostinskoe well number 3, 9 relative concentration maxima occur in the meta-xylene peaks (35,71 and 35,97 %, respectively) followed by n-decane (32.14 and 30.67 %; respectively), ortho-xylene (11.11 and 11.48 %, respectively). On humus origin indicates the source of the organic substance concentration of ethylbenzene relative low (7.14 and 7.17 %), since the organic substance sapropel origin ethylbenzene relative concentration exceeds 13 %. In the fraction of the IBP up to 150 °C oil field Sostinskoe, the well number 8 has a maximum relative concentration at the peak of para-xylene (28.29 %). The relative concentration of meta-xylene below 50 % in the fraction of the IBP up to 150 °C oil field Sostinskoe well number 3, 8, 9, indicating that the original organic matter humus oil origin. However, the high relative concentration of ethylbenzene (21.29 %) indicates that the starting organic matter sapropel origin, since organic substances of the humus origin ethylbenzene relative concentration does not exceed 13 %.