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In the article, a qualitative and quantitative analysis of motor biofuels for water and land types of transport is carried out. In that context, the possibility of increasing their effi ciency is demonstrated through the introduction of the rapid pyrolysis process, which allows up to 25% of renewable fuels to be used in a mixture with conventional diesel. It is established that the most eff ective way is the joint processing of bio-oil with oil products on existing production facilities, which does not require the construction of new plants, signifi cantly reduces the dependence on fossil oil, and the obtained gasoline and diesel fuel have good performance characteristics and their use practically does not require changes in the fuel consumption infrastructure. Sažetak U ovome radu provedena je kvalitativna i kvantitativna analiza motornih biogoriva u vodenom i kopnenom prijevozu. U tom kontekstu prikazuje se mogućnost povećanja učinkovitosti goriva uvođenjem brzog procesa pirolize, kojim se 25% obnovljivih goriva može koristiti u mješavini s konvencionalnim dizelskim gorivom. Utvrđeno je da je najučinkovitiji način obrada bionafte zajedno s naftnim proizvodima u postojećim proizvodnim pogonima, što ne zahtijeva gradnju novih postrojenja, značajno smanjuje ovisnost o fosilnim gorivima, a dobiveno naftno i dizelsko gorivo pokazuju dobre izvedbene karakteristike, dok njihova uporaba ne zahtijeva promjene u infrastrukturi potrošnje goriva. KEY WORDS motor fuel pyrolysis bio-oil vacuum gasoil co-processing KLJUČNE RIJEČI motorno gorivo piroliza bionafta vakuum plinsko ulje koprocesuriranje

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The correct organization of environmental management is essential for oil and gas enterprises provide improving the efficiency of their activity. This is vital for small and medium-sized enterprises (SMEs), which are the driving force behind the economies of highly developed countries. There was a passive form of environmental policy in many developing countries, the influence to environment was not been taken into account, the existing methods in the field of environmental safety management were not been effective enough. The investigation toward the environmental management in oil and gas industry enterprises of Azerbaijan was provided and comparing the results with Ukraine. The article also includes the institutional barriers in SMEs development, which negatively affect for environmental management. The results define the main areas for improving environmental management in oil and gas industry, in particular taxation mechanism.

The article is devoted to the development and improvement of methodology and implementation of riskcontrolling subsystem in the management system of oil and gas companies in under uncertainty conditions. It is proved, that the mathematical tool of Fuzzy Logic allows to reveal and take into account complicated nonlinear dependences between quantitative and qualitative indicators of risk-event probability estimation, and also mutual effect of risk forming factors. The six-level system of evaluation of risks of operating activities of oil and gas companies, based on fuzzy logic has been established. It allows to take into account the non-linear nature of the relationship between the risk forming factors and the resulting indicator. The logical inference model has been designed. It shows the dependence of the risk level on the meaning of linguistic rules about groups of risk forming factors in different risk groups and which is the basis for the risk assessment model. The conceptual model of management of oil and gas companies with the risk-controlling subsystem as a part of it, the main element of which is the fuzzy model of risk assessment and forecasting, has been proposed. The research concluded, that the implementation of the proposed model of management of oil and gas production enterprises will significantly improve the efficiency of the upstream segment enterprises and significantly reduce losses, caused by the occurrence of risk-events.