Oil-generating potential of bituminous rocks from Permian and Domanic deposits in Tatarstan by the data of the pyrolytic Rock-Eval method

Using the Rock-Eval pyrolytic method, a comparative analysis of bituminous rock samples from the Permian deposits of the Ashalchinskoye oil deposit and the house (Domanic) deposits of the Romashkinskoye oil field was carried out and their oil-generating potential was estimated. It is shown that according to the content of organic matter, rocks differentiate from very good productive deposits to satisfactory. Permian rocks contain a high content of free hydrocarbons, after extraction, which the oil-producing potential of rocks sharply decreases. The residual organic matter is characterized by low values of the hydrogen index, high values of the oxygen index and a low degree of maturity, which is typical for kerogen of type III, formed from the sediments of the continental type. A distinctive feature of the dominant rocks is the low content of free hydrocarbons and the high content of insoluble kerogen of types I and II associated with organic matter of marine origin and possessing high oil and gas generation potential, the realization of which with the formation of free hydrocarbons is possible using technologies simulating artificial maturation of kerogen directly in productive layers. The heterogeneity of rocks from the Permian and Domanic deposits by the oil-generating potential determined by the different organic matter contents in rocks, by its nature and resistance to thermal effects, indicates the various possibilities and conditions for its implementation

Transformation of organic matter of rocks from domanik deposits in hydrothermal and pyrolytic processes

© SGEM 2017. All Rights Reserved. The objects of the study were samples of Domanik rock from Upper Devonian siliceous-carbonate and carbonate sediments of the Romashkinо oil field, which occurs in the central part of the South Tatarian arch in Tatarstan. The composition of organic matter and mineral rock components and bitumoids extracted from them was studied by thermal analysis, X-ray diffraction analysis, SARA analysis and gas chromatography. Significant differences in the mineralogical composition and content of organic matter are found in samples after their hydrothermal treatment at a temperature of 350°C in the steam medium at the carbon dioxide. Based on the example of these rock samples, pyrolytic experiments were conducted to simulate the processes of conversion of kerogen to free micronized oil at temperatures of 350 and 600°C in a hydrogen medium in a flow system. The content of Mn 2+ , SO 3 - , SO 2 - ions in the rock, as well as ions of vanadyl (VO 2+ ) and free radicals (R*) in the pyrolysis products were evaluated using Xband electron paramagnetic resonance (EPR) spectroscopy at frequency of 9.43 GHz. The most significant changes associated with an increase in the concentration of free radicals were observed at 350°C. A new free organic radical C350 was registered In the sample of siliceous-carbonate sediments and a free organic radical C 600 – in carbonate sample, which indicate that the studied rocks did not fully realize their potential in natural hydrocarbon generation processes

Aquathermolysis of High-Viscosity Oil in the Presence of an Oil-Soluble Iron-Based Catalyst

© 2017, Springer Science+Business Media, LLC, part of Springer Nature. A synthetic oil-soluble iron-based catalyst was studied experimentally. A physical model of the catalytic transformation of high-viscosity oil at 200°C was developed. The composition and physicochemical and rheological characteristics of the thermocatalysis products were studied. IR spectroscopy found that the compositions of individual fractions changed. It was shown that the fraction of high-molecular-mass components could be substantially reduced by using the synthetic catalyst in combination with a hydrogen donor. This reduced the viscosity and; therefore, increased the degree of oil extraction

The effect of laser radiation on the surface of the aluminum alloy AMG-6

The effect of laser radiation on the change in the amount of oxygen and its distribution on the surface of an aluminum alloy AMG-6 is studied. It has been established that the oxygen content increases with time after laser treatment. The latter worsens the wetting of the alloy.Исследовано влияние лазерного излучения на изменение количества кислорода и его распределения на поверхности алюминиевого сплава АМГ-6. Установлено, что со временем после лазерной обработки содержание кислорода увеличивается. Последнее ухудшает смачивание сплава

Structural changes of heavy oil in the composition of the sandstone in a catalytic and non-catalytic aquathermolysis

© 2016,International Journal of Pharmacy and Technology. All rights reserved.Currently in connection with exhaustion of actively developed resources of light crude and the increasing consumption of energy carriers the development task solution of scavenger oil which will soon become the most important resource of stabilization and increase of oil production is relevant. The share of scavenger oil which,in particular,treatsuperviscous heavy oil steadily grows in overall balance therefore in the next years the gain of oil extraction will be provided at the expense of such naptha. It is accepted to call these resources of hydrocarbons non-conventional as their extraction requires application of the technologies and methods different from traditional methods of light oil production. One of such methods is steam impact on the layer which is characterized by downloading settlement volume of the heat carrier through delivery wells,creation of a thermal fringe and its subsequent advance by not heated water on layer towards production wells. At the same time use of various additional receptions,in particular,forcing of catalytic systems will allow to increase energy efficiency and to intensify process of heavy oil extraction. Relevance of such researches does not raise doubts. In this work the heavy native oil structural changes are studied; they lie in a sample of petrosaturated sandstone of the Volga-Ural province,being impacted by process of catalytic and not catalytic aquathermolysis

The description of heavy oils and the products of their catalytic conversion according to sara-analysis data

© Research India Publications. The main obstacle during the production of heavy oils is their abnormally high viscosity due to a significant content of resin-asphaltene substances. In order to remove heavy oils a variety of methods is used that reduces the viscosity in a layer and provides the partial conversion of the heavy components as the result of aquathermolysis. The disadvantages of this method are the high cost and the formation of free radicals to break ties. Free radicals may be involved in the polymerization reaction and form larger molecules, which leads to the viscosity increase. In order to inhibit the formation of free radicals, to reduce oil viscosity and the temperature of thermal processes various catalysts are used. They are administered in a nano state or as precursors. At the decomposition of the last ones directly into a layer an active form of a catalyst is developed. The search for new efficient catalysts obtained using available raw materials, is an urgent task to improve the energy efficiency of thermal methods for heavy oil recovery. However, for the successful solution of such problems the knowledge of the process law is required taking place under the influence of heavy oils, which is possible only in a qualitative study of the individual components. A qualitative study of heavy oil chemical composition makes it necessary to separate them into components. A common way of such oil separation is SARA method. The paper studied the influence of the iron-containing catalyst precursor to convert the heavy oil of Ashalchinsky oil field in the catalytic aquathermolysis

Transformation oil soluble catalysts based on transition metals (Co, Fe) under aquathermolysis

© SGEM 2017. All Rights Reserved. As a promising alternative to thermal steam treatment of oil-saturated reservoir technology to intensify the extraction of heavy oil catalytic aquathermolysis process can be identified. This paper presents the results of research of the active form oil soluble catalysts based on metals Co (II) and Fe (II), formed in the process of the laboratory simulation of catalytic aquathermolysis heavy crude oil, and its influence on the composition of the oil itself. Experimental data shows a decrease in viscosity catalytic aquathermolysis products. According to the hydrocarbon type content analysis (SARA) and IR spectroscopy a significant reduction of high-molecular structures of oil by catalytic thermal destruction was revealed. The composition of the active form of the catalyst powder was analyzed by X-ray diffraction method. It was shown, that the oil soluble complex based on Co is converted to the sulfide form, the complex based on Fe - to the oxide. According to the results of SEM measurements of the catalyst, the particle size is within 60 nm

Conversion of the Organic Matter of Domanic Shale and Permian Bituminous Rocks in Hydrothermal Catalytic Processes

© 2017 American Chemical Society. Comparative studies of hydrothermal transformation of organic matter samples of bituminous rocks from Domanic and Permian deposits of the Tatarstan Republic (Russian Federation) have been carried out. The experiments have been taken at a temperature of 300 °C in a vapor-gas carbon dioxide environment, with a content of 30% water in the reactionary system and an initial pressure of carbon dioxide of 2 MPa. It is shown that the distinguishing features of the organic matter of the analyzed species according to thermal analysis data are most prominent in the loss of its mass at various temperature intervals. Also, changes take place in group and structural composition and hydrocarbon composition, which have an impact on the composition of the initial products of experiments. Hydrothermal effects on the Domanic rock sample result in the destruction of structural polymer fragments of kerogen. It results in an increase in the contents of asphaltenes and their modified structures in the form of carben-carboids, insoluble in solvents characteristic of asphaltenes, thus reducing the relative content of saturated hydrocarbons in the products of the experiment. Under similar hydrothermal conditions, changes in the physical composition of the Permian rock are less significant. For the investigation of activation processes of the transformation of organic matter of the Permian rock, an experiment was conducted using catalysts. As catalysts, a composition of oil-soluble iron(II), cobalt(II), and copper(II) carboxylates with an additive of propanol was used. The use of the catalyst has increased the output of light fractions and reduced the content of resins and asphaltenes as part of Permian rock

Oil generation potential of the Permian deposits of Tatarstan based on the content, structure and thermal stability of organic matter in rocks

© SGEM2016.With the use of thermal analysis and Rock-Eval, as well as on the basis of changes in the content and features of the group and the hydrocarbon composition of organic matter in samples of oil and bitumen-containing rocks of Permian deposits in Tatarstan, according to their mineral composition, evaluated the types of hydrocarbon fluids and oil generation potential of the rocks