Here in the article we investigated the carbohydrate composition of sulfite liquor for the presence of cellulosic polysaccharides of the hemicellulose, represented by the optical isomers of pentosans (xylanе, arabinana) and hexosans (mannose, rhamnose), thin-layer chromatography. The differences in carbohydrate composition of sulfite liquor have been detected, depending on the method of their preparation. The effect of carbohydrate composition on some properties of drilling reagents derived on their basis has been determined.

Keywords: Sulfite liquor; Carbohydrates; Hemicellulose; Xylane; Rhamnose; Thin layer chromatography; Drilling reagents.

The effect of some domestic research (karboksilmetilkrahmal - CMC, starch extrusion) and foreign (Rodopol 23P) starch derivatives on the properties of artificially prepared and natural (alluvial) muds, which are used in drilling oil and gas wells in Noyabrsk region of Western Siberia, are studied. It was shown that aqueous solutions of salts have a significant destabilizing effect on aqueous solutions of CMC, and Cenomanian reservoir mineralized water produces an effect on muds with addition of CMC.

Keywords: Polysaccharides; Starch; Clay suspension; Rheology; Filtration rate; Salt aggression.

The article deals the problem of gas wells flooding diagnosis. The process of flooding reduces the efficiency of the gas fields development. The known diagnosis methods are very labor-consuming. Besides they don’t provide real-time diagnosis. The proposed method uses the results of daily measurements of temperature and pressure at the wellhead for automatically flooding diagnosis. The method is built on mathematical processing of these results by a special algorithm.

Keywords: Gas-well flooding; Method of automatic diagnosis; Mean square deviation; Wellhead temperature and pressure.

This article discusses issues related to the study of fluid pressure fluctuations under its injection into the production and injection wells. Details of transmission mechanism of fluid pressure fluctuations to tubing string vibrations are presented in the article. Simulation models of flow string under cyclic liquid pumping and installation of the antiwear hammer device are provided. As a result of calculations, transition amplitude vs flow string vibration frequency has been presented in the article.

Keywords: Simulation model; Tubing string; Amplitude; Vibration frequency; Packer.

Currently emulsion formulas are widely used in various processes of oil production: when primary and secondary penetrations, well killing operations, bottom-hole treatment and Production Enhancement processes. In perspective, undoubtedly, the application range of invert emulsions will expand. Placing on production of reservoirs with scavenger oils will demand the new approach to problems of
conservation, recovery and enhancement of reservoir properties. In this context invert emulsions, due to their unique properties, allow successful and effective solution of a part of technological problems in oil extracting.

Keywords: Well killing fluids; Carbonate rocks; Acid treatment; Invert emulsion; Preservation of reservoir properties.

The sensitivity analysis of field-geologic parameters influence on the productivity factor of deposits was conducted in conditions of various groups of objects in carbonate reservoirs. The character and degree of parameter influence were revealed. Patterns allowing to predict the efficiency of bed productivity from indirect data coming from geologic - physical and physical-chemical properties of layers and fluids saturating them, and also the bedding terms of productive layers were created. We presented the algorithm of the received data application for effective development of low productive objects of oil recovery.

Keywords: Productivity efficiency; Oil deposits; Carbonate reservoir; Oil field development.

The analysis of geological -physical and physical - chemical properties of productive reservoirs and fluids was made. Grouping of objects was done and the centers of grouping were defined, the adjacent objects were selected for carrying out further research. The analysis of geological features of various groups of objects allowing planning actions for improvement of development system for the purpose of oil recovery increase was carried out. The optimum complex of technologies of oil recovery increase and decrease in water content differentially on the allocated groups of fields was recommended. It was offered to apply the recommendations for objects of each of the selected groups.

Keywords: Grouping of development objects; Object - area; Reservoir; Оil recovery.

Crucial role of the pipeline transportation in the supply of hydrocarbons to the Russian enterprises, CIS and foreign countries is evident and it is the subject of scientific and economic research. In article the system of pipeline transport, priorities of pipeline construction, basic trends in development of research efforts of Ufa State Petroleum Technological University are considered.

Keywords: Main pipeline, Building and repair, Operational reliability, Intense-deformed condition, Innovations and priorities.

Research on extraction of concentrates of organosulfur compounds from sour crude oil using various solvents has been conducted. The composition of organosulfur compounds has been investigated which showed that benzo - and dibenzothiophenes are predominant components of the selected concentrates relating to hard to recover ones from oil and oil products by conventional methods. The hydrogenation was carried out on the example of individual benzothiophene by means of electrophilic hydrogenation systems. The possibility to obtain concentrates of organosulfur compounds with high sulphide content from highly sulphurous oil has been shown.

Keywords: Organosulfur compounds; Concentrate; Benzothiophene; Dibenzothiophene; Highly sulphurous oil; Hydrogenation.

The article presents the results of scientific research in the context of development of technical approach to the cost-accounting in integrated production. The authors formulated the principles of integrated production, their main technological features that affect the formation of the basic and by-product cost index. The authors propose a universal cost allocation method in integrated production, based on balancing the profitability of sales of the two product groups - basic products of integrated production and products resulting from further processing of by-products and waste products.

Keywords: Production cost; Sideline products; Production profitability; Distribution method; Volume-natural method; Market method.

Currently the greatest interest is the problem of protecting the environment against heavy and bituminous oil pollution. The paper studies the processes that occur in oil-polluted soil, as well as recommendations on bioremediation of soils contaminated with heavy oil from Ashalchinskoye field in the Republic of Tatarstan. It was found that the effective restoration of heavy oil contaminated soil requires treatment with suspension of native oil oxidation microorganisms and additional fertilizing in the form of mineral supplements, bio-stimulator, such as decomposed organic matter and the soil conditioner - peat.

Keywords: Heavy oil; Oil-oxidizing microorganisms native; Remediation; Phytotoxicity; Biodyne.