Oil Content Distribution Research Articles

Perspectives of Upper Kirmaki clay suite in Chilov field

Chilov adasy field is being in industrial operation since 1948. The oil content is associated with Kirmaki, Gala, Lower Kirmaki, Upper Kirmaki sand suites of the deposits of lower section of Productive Series. The oil potential in Chilov field is distributed both on lower and upper wings of the structure which is characterized with the fault of 400-500 m amplitude. The difference is the oil bearing capacity in the lower wing is associated with Kirmaki, Gala, Lower Kirmaki, Upper Kirmaki sand suites while in the upper wing it is connected with only Gala and Lower Kirmaki suites. The first 10 t oil production was obtained on 04.06.1974 in the well No 49 of Upper Kirmaki clay suite in the interval of 647–644 m. Afterwards, despite of oil output from 3 more wells (No 29, 83, 163), the distribution of oil content in Upper Kirmaki clay suite along the field was not clear and the reserves not calculated. Thus, due to the fundamental analysis of field-geophysical data of the wells in Upper Kirmaki clay suite and consideration of test results it was defined that it has commercial oil reserves. The distribution of oil reserves within the blocks of Upper Kirmaki clay suite structure has been specified and the borders defined as well.

Beneficiation of 6-0 mm fine-grain oil shale using vibrating air-dense medium fluidized bed separator

The throughput of oil shale is gradually increasing because of the high value it provides for different applications. However, during oil shale mining, a large amount of fine-grain (6-0mm) material is produced. As the 6-0mm material has higher oil content and better combustion performance, it can be effectively utilized by performing beneficiation through physical sorting to reduce impurities and upgrade the oil shale grade. In this paper, the physical properties of fine-grain (6-0mm) oil shale were analyzed. The beneficiation of 6-0mm oil shale using a vibrating air-dense medium fluidized bed was proposed. The effects of the vibration intensity Γ, gas velocity v, and bed height h on the beneficiation efficiency were systematically investigated. The distribution characteristics of the oil content in the upper, middle, and lower layers of the bed under the optimum operating parameters were studied. Under the optimum operating parameters (v=1.46cm/s, h=85mm, Γ=10.87), the oil content in the upper layer material of the bed is uniform and the fluctuation of the oil content is gentle with better stability. The distribution of the oil content in the middle layer is disorderly, the fluctuation range expands further, and the stability is the worst. The oil content distribution in the lower layer material is uniform with a very small range of fluctuation, and the oil content distribution in the bed material is stable. The yields and oil content of the concentrate are 31.34% and 10.68%, while those of tailings are 68.66% and 0.92%, and the separating accuracy (probable error) is 0.125g/cm3. In conclusion, 6-0mm oil shale can be effectively beneficiated by the vibrating air-dense fluidized bed separator and it can be recycled and utilized efficiently.

Growth and Essential Oil Content ofAngelica archangelicaas Influenced by Light Intensity and Growing Media

ABSTRACT The effects of light levels and growing media on growth and essential oil content in Angelica archangelica were investigated under greenhouse conditions. Eight months after seed sowing, the highest shoot and root dry matter yield (810 g/plant and 438 g/plant respectively) was recorded from sand-hydroponic (SH) grown variants under supplemental light (SL). The highest oil yield (4.03 mg/plant) was produced by SH-grown plants under SL, while the lowest oil yield (1.74 mg/plant) was obtained from plants grown under organic culture with natural light (NL). The contribution of SL to dry matter (DM) shoot production under SH culture was 57%, while for root production this was found to be 61%. The DM root and total shoot yields of organically grown plants under SL declined by 11% and 18%, respectively, due to increased light intensity. Significant differences were found in the distribution of oil content in different organs, root sizes and the grinding of angelica samples. Thick and thin roots were foun...