Oil of the Sredne-Nyurolskoye Field
Abstract Generated abstract
This paper reports an evaluation of the commercial properties of crude oil from the Sredne-Nyurolskoye field in Tomsk Oblast. Using fractionation and standard physicochemical characterization, it describes yields, sulfur content, hydrocarbon composition, viscosity, low-temperature properties, and suitability of gasoline, jet fuel, diesel, kerosene, catalytic cracking feedstock, fuel oil, residues, and base oil fractions. The oil is characterized as low-sulfur and paraffinic, with high yields of light fractions and several distillates meeting or nearly meeting relevant fuel standards, sometimes after alkaline purification or additive treatment. The study concludes that this crude is a valuable feedstock for chemical processing and for producing fuels and oils.
Full Text
OIL OF THE SREDNE-NYUROLSKOYE FIELD
N. M. Smolyaninova, K. K. Stramkovskaya, S. I. Smolyaninov,
S. I. Khoroshko
(Presented by the scientific-methodological seminar of the Chemical-Technological Faculty)
The Sredne-Nyurolskoye oil field is located in Kargasok District, Tomsk Oblast. The oil of this field is low-sulfur, paraffinic, and has a high content of fractions boiling up to 200 and 300°C—33.9–59.4%, respectively. Its commercial qualities are given in Table 1.
The gasoline fractions have relatively low octane numbers, but with the addition of ethyl fluid in an amount of 0.82 g/kg of fuel they meet the requirements of the technical standards for grade A-66 motor gasoline.
The hydrocarbon composition of the gasoline fractions (Table 2) shows that, having negligible sulfur content and a low content of aro-
Table 2
Characteristics of feedstock for catalytic reforming
| Fraction distillation temperature limits, °C | Yield on oil, wt. % | $\rho_4^{20}$ | Sulfur content, % | Aromatic hydrocarbons, wt. % | Naphthenic hydrocarbons, wt. % | Methane hydrocarbons, wt. % |
|---|---|---|---|---|---|---|
| 62–85 | 2,9 | 0,6981 | absent | 4 | 39 | 57 |
| 62–105 | 6,8 | 0,7168 | absent | 3 | 38 | 59 |
| 85–105 | 3,9 | 0,7234 | absent | 3 | 37 | 60 |
| 85–120 | 7,4 | 0,7300 | absent | 3 | 33 | 64 |
| 85–180 | 22,0 | 0,7513 | absent | 6 | 30 | 64 |
| 105–120 | 3,5 | 0,7353 | absent | 3 | 28 | 69 |
| 105–140 | 8,3 | 0,7421 | absent | 5 | 30 | 65 |
| 120–140 | 4,8 | 0,7480 | absent | 6 | 32 | 62 |
| 140–180 | 9,8 | 0,7550 | absent | 8 | 28 | 64 |
matics, they may constitute a favorable feedstock for chemical processing in pyrolysis and catalytic reforming processes.
The fraction boiling within the range 120–240°C, according to all indicators except acidity, corresponds to grade TS-1 jet fuel (GOST 10227–62); the 120–280°C fraction—to T-1 fuel. In terms of vi-
therefore, in order to obtain specification-grade jet fuel from these fractions, only alkaline purification will be required.
From Sredne-Nyurolskoye oil, illuminating kerosene can be obtained without purification from sulfur compounds, with a yield of 32.3%.
The characteristics of the distillates used to obtain diesel fuels, given in Table 1, show that the 150–350°C fraction meets GOST 305–62 in all indicators for summer diesel fuel; the 200–350°C fraction meets the requirements for fuels of grades L and S; the 240–350°C fraction corresponds to fuels of grades DT-1, DT-2, and DT-3 according to GOST 1167–51.
The yield of feedstock for catalytic cracking is 19.7%. Its composition includes 55% methane-naphthenic hydrocarbons and 45% aromatic hydrocarbons.
Table 3
Characteristics of fuel oils and residues
| Fuel oil and residue | Density, $\rho^{20}_{4}$ | Conditional viscosity, degrees Engler, VU$_{50}$ | Conditional viscosity, degrees Engler, VU$_{80}$ | Conditional viscosity, degrees Engler, VU$_{100}$ | Temperature, °C, flash | Temperature, °C, pour point | Sulfur content, % | Coking tendency, % | Yield on crude oil, % |
|---|---|---|---|---|---|---|---|---|---|
| Commercial fuel oil 40 | 0.9325 | — | 8.0 | 4.5 | 208 | 25 | 1.08 | 6.0 | 23.0 |
| Commercial fuel oil 100 | 0.9485 | — | 15.0 | 8.6 | 235 | 29 | 1.20 | 7.6 | 16.8 |
| Commercial fuel oil 200 | 0.9395 | — | 10.4 | 6.5 | 223 | 27 | 1.14 | 6.8 | 19.8 |
| Residue: | |||||||||
| above 350 | 0.9180 | 19.1 | 3.7 | 2.6 | 191 | 21 | 0.96 | 4.7 | 28.4 |
| above 400 | 0.9485 | — | 15.5 | 8.6 | 235 | 29 | 1.20 | 7.6 | 16.8 |
| above 450 | 0.9745 | — | — | 21.0 | 290 | 35 | 1.40 | 10.0 | 8.7 |
The characteristics of fuel oils and residues of different withdrawal depths, presented in Table 3, show that fuel oils of grades 40 and 100 do not meet GOST 10585–63 with respect to pour point and, evidently, can be used only as MP fuel (for open-hearth furnaces). Fuel oil grade “200” can be obtained from this oil with characteristics fully meeting the corresponding GOST.
From the 350–450° fraction and the residue boiling above 450°C, a base oil with a viscosity index of 85 can be separated in an amount of 17% by weight of the oil.
It follows from the above that the oil of the Sredne-Nyurolskoye field is a valuable raw material for chemical processing and for obtaining fuels and oils.
Conclusions
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A study has been carried out of the commercial properties of the oil of the Sredne-Nyurolskoye field.
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The yields and quality of commercial petroleum products have been shown.
Characteristics of marketable products
| Fraction boiling range, °C | Petroleum yield, % | Density, \(d_4^{20}\) | Viscosity, cSt, 20°C | Viscosity, cSt, 50°C | Viscosity, cSt, 100°C | Sulfur content, % | Temperature, °C: flash | Temperature, °C: crystallization | Temperature, °C: cloud point | Temperature, °C: initial crystallization | Iodine number, g iodine per 100 g fuel | Octane number | Cetane number | Hydrocarbon content, %: aromatics | Hydrocarbon content, %: naphthenic | Hydrocarbon content, %: methane | Coking tendency, % | Smokeless flame height, mm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gasoline fractions | ||||||||||||||||||
| 28–200 | 53.9 | 0.7495 | — | — | — | trace | — | — | — | — | 52.0 | — | — | 6.0 | 29.0 | 65.0 | — | — |
| Fuels for jet engines | ||||||||||||||||||
| 120–240 | 28.4 | 0.7835 | 1.55 | — | — | 0.02 | — | 41 | — | −51 | — | — | — | 13.4 | — | — | — | 24 |
| 120–280 | 38.7 | 0.7895 | 1.60 | — | — | 0.03 | — | 46 | — | −40 | — | — | — | 15.9 | — | — | — | 33 |
| Diesel distillates | ||||||||||||||||||
| 50–350 | 48.7 | 0.8255 | 3.80 | 2.10 | — | 0.11 | −34 | 70 | −12 | — | 0.49 | — | 57 | — | — | — | 0.01 | — |
| 200–350 | 36.1 | 0.8370 | 5.10 | 2.56 | — | 0.21 | −18 | 97 | −8 | — | 0.79 | — | 58 | — | — | — | 0.03 | — |
| 240–350 | 27.6 | 0.8425 | 6.40 | 3.25 | — | 0.28 | −15 | 109 | −3 | — | 0.77 | — | 58 | — | — | — | 0.04 | — |
| Kerosene distillates | ||||||||||||||||||
| 150–280 | 31.1 | 0.8145 | — | — | — | 0.05 | — | 56 | −32 | — | — | 20.0 | — | — | — | — | — | 22 |
| 150–320 | 32.3 | 0.8155 | — | — | — | 0.06 | — | 68 | −15 | — | — | 19.0 | — | — | — | — | — | 21 |
| Raw material for catalytic cracking | ||||||||||||||||||
| 350–450 | 19.7 | 0.8970 | — | — | 4.72 | 0.71 | 23 | — | — | — | — | — | — | 45.0 | — | 55.0 | 0.02 | — |
Noted Misprints
| Page | Line | Printed | Should read |
|---|---|---|---|
| 4 | 13 from bottom | heavy isotopes | heavy isotopes |
| 7 | 5 from bottom | reservoirs | reservoirs |
| 8 | 13 from top in the column “Deviation” | \(\underline{+0{,}000}\) | \(\underline{+0{,}000}\) |
| 8 | 20 from bottom in the column “Difference of data” | \(-0{,}5\ \ 8\) \(\ \ \ \ \ \ 5\) \(\ \ \ \ \ \ 3\) \(-0,\) |
\(+0{,}42\) \(-0{,}35\) |
| 8 | 10 from bottom | value | values |
| 42 | 3 from top | \(\rho\) | \(\rho_{\mathrm{k}}\) |
| 44 | 3 from top | \(O\lambda\) | \(O\lambda\) |
| 44 | 13 from top | \(D'\) | \(D'\) |
| 44 | 12 from bottom | \(\rho\) | \(\rho_{\mathrm{д}}\) |
| 81 | 5 from bottom | aromatic | aromatic hydrocarbons |
| 84 | 11 from top | electivity | selectivity |
| 90 | 9 from top | In considering | In considering |