Geological and geochemical criteria of oil and gas bearing section in the contact zone of the Pre-Jurassic basement and sedimentary cover in the sublatitudinal Pre-Ob region

2013 ◽  
Vol 8 (3) ◽  
Author(s):  
K.G. Skachek ◽  
◽  
A.I. Larichev ◽  
O.I. Bostrikov ◽  
◽  
...  
Keyword(s):  
Contact Zone ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Gas Bearing

scholarly journals GEOLOGICAL AND GEOPHYSICAL CHARACTERISTICS OF THE ANABAR‐KHATANGA OIL AND GAS PROVINCE; NUMERICAL MODELING OF THE PROCESSES OF FORMATION OF SALT DOMES (SIBERIAN SECTOR OF THE RUSSIAN ARCTICS)

2019 ◽  
Vol 10 (2) ◽  
pp. 459-470
Author(s):  
V. A. Kontorovich ◽  
В. V. Lunev ◽  
V. V. Lapkovsky
Keyword(s):  
Cross Sections ◽  
Oil And Gas ◽  
Numerical Models ◽  
Sedimentary Cover ◽  
Ground Surface ◽  
Geological Structure ◽  
Salt Domes ◽  
Software Packages ◽  
Geological Features ◽  
Gas Bearing

The article discusses the geological structure, oil‐and‐gas‐bearing capacities and salt tectogenesis of the Anabar‐Khatanga saddle located on the Laptev Sea shore. In the study area, the platform sediments are represented by the 14‐45 km thick Neoproterozoic‐Mesozoic sedimentary complexes. The regional cross‐sections show the early and middle Devonian salt‐bearing strata and associated salt domes in the sedimentary cover, which may be indicative of potential hydrocarbon‐containing structures. Diapirs reaching the ground surface can be associated with structures capable of trapping hydrocarbons, and typical anticline structures can occur above the domes buried beneath the sediments. In our study, we used the algorithms and software packages developed by A.A. Trofimuk Institute of Petroleum Geology and Geophysics (IPGG SB RAS). Taking into account the structural geological features of the study area, we conducted numerical simulation of the formation of salt dome structures. According to the numerical models, contrasting domes that reached the ground surface began to form in the early Permian and developed most intensely in the Mesozoic, and the buried diapirs developed mainly in the late Cretaceous and Cenozoic.

Geothermal features of the western part of Yenisei-Khatanga regional trough

2019 ◽  
pp. 28-36
Author(s):  
Dmitry A. Novikov
Keyword(s):  
Oil And Gas ◽  
Sedimentary Basin ◽  
Sedimentary Cover ◽  
Heating Effect ◽  
Small Thickness ◽  
Geological Evolution ◽  
Geological Section ◽  
Gas Bearing ◽  
Different Parts ◽  
Comprehensive Study

The article deals with the results of a comprehensive study of the geothermal conditions of oil and gas bearing deposits in the western part of Yenisei-Khatanga regional trough. Four types of vertical geothermal zonality are established, the characteristics of which depend on the geological evolution of different parts of the sedimentary basin. The minimal geothermal gradients (1,80–2,2 0 C/100 m) are established there in the near edge zones with a small thickness of the sedimentary cover and the development of the infiltration system. The maximum gradients (3,2–3,4 0 С/100 m) are established in the zones of disjunctive tectonics, which had a significant heating effect on the geological section due to the ascending discharge of groundwater from deep-lying aquifers.

scholarly journals Modeling of the tectonic position and prediction of the spatial distribution of hydrocarbon deposits in the Middle Kura depression (examples from the Ganja oil and gas-bearing region)

2020 ◽  
pp. 38-44
Author(s):  
A. Khuduzade ◽  
Sh. Akhundov ◽  
S. Shabanova ◽  
T. Imamalili ◽  
O. Ismaylov
Keyword(s):  
Oil And Gas ◽  
Sedimentary Cover ◽  
Sedimentary Basins ◽  
Petroleum Potential ◽  
Tectonic Position ◽  
Geochemical Factors ◽  
History Of ◽  
Fundamental Research ◽  
Gas Potential ◽  
Gas Bearing

The article continues the series of publications devoted to the forecast of oil and gas potential in the Middle Kura Depression. Systematization and analysis of published materials show that the effectiveness of prospecting and exploration for oil and gas depends on the fairness and accuracy of scientific ideas about the origin and patterns of hydrocarbon localization. The established heterogeneity of the structure of sedimentary basins and the uneven distribution of oil and gas deposits in them allows us to make a predictive assessment of territories based on historical-geological methods and a synthes analysis of criteria for assessing the prospects of oil and gas. These methods are based on fundamental research in geology, the most important of which are structural-tectonic analysis and the genesis of oil and gas-bearing structures, the study of geological and geochemical factors in the simulation model “Uniform continuous lowering”, the study of the staged conversion of organic matter in the catagenetic process and show the oil and gas windows, prediction of collector and overlying seal zones, study of organic substances dissolved in water and other hydrogeological factors contributing to the formation and prevent of oil and gas deposits. Analysis of the geological history of the first stage of research,the assessment of petroleum potential of the region. Based on the results of seismic surveys, we carried out paleotectonic reconstructions for the northwestern zone of the Ganja oil and gas-bearing region, which illustrate the maps of total thickness in the form of isopachic triangle, paleotectonic profiles and graphic of subsidence size. Modeling of structural surfaces made it possible to establish the historical development of not only local structures, but also to notice new features in the formation of chronostratigraphic surfaces, and to judge the tectonic regime of the sedimentation basin, to justify the mechanism of formation in the sedimentary cover of the Middle Kura depression, both of plicative dislocation and faulting as well as zones of oil and gas accumulation associated with them. The study can be considered as a positive argument when choosing the location of the prospecting well.

scholarly journals Features of Distribution of Oil and Gas Deposits in the Earth’s Crust

2020 ◽  
Vol 6 (8) ◽  
pp. 135-144
Author(s):  
T. Yarboboev ◽  
Sh. Akhmedov ◽  
K. Usmonov
Keyword(s):  
Genetic Factors ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Petroleum Geology ◽  
Gas Accumulation ◽  
Sedimentary Deposits ◽  
Geological Feature ◽  
Gas Formation ◽  
Hydrocarbon Deposits ◽  
Gas Bearing

Hydrocarbon deposits within oil and gas-bearing territories are distributed very unevenly both in area and in the section of sedimentary deposits, which is the main geological feature of oil and gas placement in the subsurface. The formation of hydrocarbon accumulations in the sedimentary cover is due to a set of genetic factors, which ultimately determines the patterns of placement of oil and gas accumulations along the section and area of the sedimentary cover. The study of the factors determining the zonation of oil and gas accumulation and genetically her condition, zoning of oil and gas formation, contributes not only to expanding our knowledge on the fundamental problems of petroleum geology, but also improve the efficiency of exploration.

scholarly journals Trace elements of naftides of oil- and gas-bearing basin

2019 ◽  
Vol 488 (5) ◽  
pp. 534-538
Author(s):  
S. A. Punanova
Keyword(s):  
Trace Elements ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Chemical Properties ◽  
Mineral Elements ◽  
Oil Fields ◽  
Low Concentrations ◽  
Gas Bearing ◽  
Oil Formation

The parameters of the concentration distribution of trace elements in the oil fields of oil and gas basins of the world, their physic-chemical properties, as well as the geological and geochemical features of oil formation in these basins were studied. It is shown that the ontogenesis of hydrocarbons associated with deep tectonic transformations (geodynamic factor) controls not only the placement of naphtides in the sedimentary cover, but also the diversity of their metallogenic specialization. The classification of oils of various ontogenesis zones is given in accordance to the degree of their enrichment of mineral elements and their belonging to the vanadium or nickel metallogenic type. The oil, characterized by primary rich concentrations of trace elements of the main zone of oil formation, and oil with initially low concentrations of trace elements in the zones of early generation are presented. The processes of transformation of the composition of oils in the areas of hypergenesis lead to their enrichment, whereas the oil of the catagenesis zone is depleted in trace elements.

Significance of Mineralogical and Lithologic-Petrographical Rank in the Ranking of Geological Information

2020 ◽  
Vol 42 (4) ◽  
pp. 33-49
Author(s):  
O.V. CHEPIZHKO ◽  
V.V. YANKO ◽  
V.M. KADURIN ◽  
I.M. NAUMKO ◽  
S.M. SHATALIN
Keyword(s):  
Fluid Flow ◽  
Black Sea ◽  
Bottom Sediments ◽  
Oil And Gas ◽  
Sedimentary Cover ◽  
Geochemical Characteristics ◽  
The Black Sea ◽  
Flow Parameters ◽  
Geochemical Parameters ◽  
Geological Information

For the first time the importance of mineralogical and lithological-petrographical ranks in the line of geological information ranks is substantiated for implementation of long-term forecasts, standard and non-standard approaches to research of physical and geochemical parameters as a basis of creation of complex system of forecast criteria and prospecting indicators of hydrocarbons within the sedimentary cover of Black sea based on the theory of global fluid-flows derivation. These criteria have different sensitivity to the object (hydrocarbon deposits) and are therefore ranked. The ranking determined the following parameters: 1) seismic data within the object, obtained by the method of deep seismic sounding, RWM SDP; 2) parameters of tectono-geodynamic structures; 3) the main characteristics of sedimentary cover and bedrock; 4) geochemical characteristics; 5) parameters of mineral complexes and fluid inclusions in mineral neoformations; 6) the value of the distribution of meiobenthos. Based on modern views of oil and gas geology, structural-tectonic and lithological-facies criteria are among the main ones. The study of the mineralogical component of sediments is made with using mineralogical, thermobarogeochemical and X-ray spectral methods. Fixation of anomalies of fluid flow at the bottom of the Black Sea as to the distribution of abiotic parameters in order to assess the prospects of oil and gas is determined by structural and tectonic features and high permeability of fluid flow; parameters of mineral complexes (minerals, facies) and genetic connections; heterogeneity of geochemical characteristics of bottom sediments; the presence of hydrocarbon inclusions in authigenic minerals of bottom sediments.

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