scholarly journals PORE SOLUTIONS OF MESOZOIC SEDIMENTS FROM THE WEST SIBERIAN BASIN

2018 ◽  
pp. 84-88
Author(s):  
N. F. Chistyakova

The article deals with the analysis of the chemical composition of pore solutions pressed from terrigenous rocks at pressures of 5-10-15-400 atm. Particular attention is paid to sulfate and hydrocarbonate ions of relict water - pore solutions - indicators of the realization of the oil and gas potential of rocks containing dispersed organic matter of subaquatic origin at the stage of catagenesis.

Fact Sheet ◽  
2008 ◽  
Author(s):  
Christopher J. Schenk ◽  
Kenneth J. Bird ◽  
Ronald R. Charpentier ◽  
Donald L. Gautier ◽  
David W. Houseknecht ◽  
...  

2021 ◽  
Vol 82 (3) ◽  
pp. 19-26
Author(s):  
POPKOV VASILY I. ◽  

The surface of the folded base of the platforms is an important geological boundary separating rock complexes formed in different geodynamic settings and characterized by different physical properties, which largely determine the patterns of formation of minerals in them. Therefore, determining the depth of its occurrence and morphology is not only theoretical, but also practical. Despite many years of studying the foundation of the west of the Turan Platform, there is no unity among geologists and geophysicists in their ideas about its structure, depth of occurrence and surface structure. In this regard, the aim of the work is to build a structural map of the surface of the foundation of the west of the Turan plate, to identify the main tectonic structures and their morphology. The construction is based on a comprehensive analysis of drilling materials and geophysical data. When drawing up the structural map, all the currently available geological and geophysical material was used, including data from drilling, gravity and magnetic surveys, and seismic surveys of various modifications, which made it possible to perform fairly detailed and reliable constructions. The article provides a detailed description of the surface structure of the folded base of the west Turan platform. The obtained results can be used in solving the issues of oil and gas potential of the studied territory. The folded base of the western Turan plate is a heterogeneous and heterochronous formation, differentiated by the depth of occurrence, which allows for morphostructural zoning of its surface.


2019 ◽  
Vol 98 ◽  
pp. 02007
Author(s):  
Rustam Mustaev ◽  
Javidan Ismailov ◽  
Uliana Serikova

This paper provides the results of geochemical studies with products of mud volcanoes conducted for a purpose of evaluating the generative potential of the South-Caspian basin. The kerogen types have been identified for different stratigraphic intervals and stages of the organic matter (OM) thermal maturity have been determined. A correlation has been established between the generative potential and the basin deposition and subsidence rate.


Author(s):  
Yu. V. Khokha ◽  
M. B. Yakovenko ◽  
O. V. Lyubchak

The article considers the methods for estimating the level of organic matter transformation, scattered in sedimentary strata, in the process of catagenetic transformations. The authors show the efficiency of kerogen property research by coal petrographic methods and palynological analysis, the purpose of which is to establish the paleotemperature that was actualized in the process of evolution. The advantages and disadvantages of establishing the organic matter generation potential by pyrolytic methods, primarily by pyrolysis by Rock-Eval, are evaluated. In the context of the organic matter evolution indirect study methods, brief information on gas geochemistry is given and the main indicators used in the analysis of the chemical composition of gases in hydrocarbon deposits are listed. It is shown that the equilibrium thermodynamics apparatus can provide information about the conditions and level of organic compounds transformation in the lithosphere. The general information on geological history of the Southern oil and gas region of Ukraine is given and the main events that influenced the modes of transformation of organic matter are shown. The most important of these were the plate collision processes and the accompanying spreading that took place during the approaching of the Arabian continent and Eurasia, which led to the formation of a faults network: submeridional and sublatitudinal. According to the chemical composition of the region's depo-sits, graphs within the coordinates C2/C3 to C2/i-C4 and ln(C2/C3) to ln(C1/C2) are plotted. According to the graphs, the authors establish the trends of organic matter evolution: development in the direction of maturation and kerogen formation without secondary oil destruction. Information on the method of calculating the kerogen/gas system composition according to the Jaynes formalism is given. According to thermodynamic simulation combined with the chemical composition of deposits, maps of equilibrium temperatures and depths for several temperature flows are constructed. The effect of the individual deposits geological structure on the evolution of its contents is shown. The map of generation depletion of the region kerogen is made. According to the results of the map analysis, it is found that the kerogen of the Kerch-Taman interpericline depression is maximally depleted, while the kerogen of the southern side of the Karkinitsky-North-Crimean depression retains the high potential for the formation of light hydrocarbons.


AAPG Bulletin ◽  
1993 ◽  
Vol 77 ◽  
Author(s):  
SAVOSTIN, L., and N. KUSNETSOV, LAR
Keyword(s):  
The West ◽  

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