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Date submitted2024-04-16
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Date accepted2024-09-24
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Date published2024-11-12
Deep-buried Lower Paleozoic oil and gas systems in eastern Siberian Platform: geological and geophysical characteristics, estimation of hydrocarbon resources
The study of deep-buried oil and gas systems is a promising trend in the preparation of hydrocarbon resources. The study of the factors determining oil and gas potential is extremely important. The Lena-Vilyui sedimentary basin in the eastern Siberian Platform has a potential for the discovery of large oil and gas fields in deep-buried Cambrian deposits. The use of original methodological approaches to the analysis of black shale and overlying deposits, generalization of the results of lithological, biostratigraphic and geochemical studies of Cambrian deposits in territories adjoining the study area, modern interpretation of geophysical data showed that siliceous, carbonate, mixed rocks (kerogen-mixtite) of the Kuonamka complex and clastic clinoform-built Mayan deposits are most interesting in terms of oil and gas potential. Oil and gas producing rocks of the Lower and Middle Cambrian Kuonamka complex subsided to the depths of 14 km. The interpretation of modern seismic surveying data confirms the hypothesis of a limited occurrence of the Upper Devonian Vilyui rift system. Based on generalization of geological, geophysical and geochemical archival and new materials on the Lower Paleozoic deposits of the eastern Siberian Platform, a probabilistic estimation of geological hydrocarbon resources of the Cambrian and younger Paleozoic complexes in the Lena-Vilyui sedimentary basin was performed. Based on basin modelling results it was concluded that the resources were mainly represented by gas. It is presumed that oil resources can be discovered in traps of the barrier reef system as well as on the Anabar and Aldan slopes of the Vilyui Hemisyneclise. With a confidence probability of 0.9, it can be stated that total initial resources of oil and gas (within the boundaries of the Vilyui Hemisyneclise) exceed 5 billion t of conventional hydrocarbons. The recommended extremely cautious estimate of resources of the pre-Permian complexes is 2.2 billion t of conventional hydrocarbons. In the study area, it is necessary to implement a program of deep and super-deep parametric drilling without which it is impossible to determine the oil and gas potential of the Lower Paleozoic.
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Date submitted2022-10-14
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Date accepted2022-12-13
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Date published2023-02-27
Carbon capture and storage: net zero contribution and cost estimation approaches
Carbon capture, utilization, and storage (CCUS) are a combination of necessary and promising technologies that can help reduce CO2 emissions, which are not used on a large scale due to the high cost of solutions. This article aims to review and analyze carbon capture and storage (CCS) projects in terms of their net zero contribution and cost estimates. The study identified a wide range of cost estimation methods that can be applied to CCS projects and revealed such issues as a lack of standardization, limited data, and cost data variability. Still, several common trends were found, including the classification of CCS adopters into low-cost and high-cost industries, cost estimation by CCS step (capture, transportation, storage) and industry (power generation, other sectors), and calculation of relative indices to make comparisons with other decarbonization options. The results of the study can serve as a foundation for developing approaches to estimating the costs of CCS in Russia, which are necessary for planning government support measures and involving businesses in the implementation of these initiatives.
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Date submitted2016-09-05
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Date accepted2016-10-27
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Date published2017-02-22
Impact of the shape of geological contact on mining losses in the process of near-contact zone development
- Authors:
- G. S. Kurchin
- S. A. Vokhmin
- A. A. Kytmanov
In Russia development of mineral resources is carried out on a truly grand scale, and mining industry is in its essence a basic sector, supporting and facilitating the development of national economy. It predetermines the need of safe and responsible attitude towards riches of our subsoil – mineral resources. With this in mind, one of the key requirements to extraction technologies is minimization of mining losses and ore dilution. The biggest ore losses in the mining block take place in the process of development of contact areas between the ore body and surrounding rocks, due to differences between development pattern and surface of geological contact. Complexity of the contact between ore and surrounding rocks is traditionally characterized by so called «stochastic contact zone». Technological difficulty of extracting ore from the ore – wallrock contact is determined by volatility of geometric parameters in «stochastic contact zone» in the plane of geological contact. Current paper focuses on the issues of standard-setting for mining losses and ore dilution in the process of near-contact zone development. A method is suggested to estimate standard values of losses and ore dilution in stochastic zones. Authors have developed an algorithm of defining the shape of the contact. In the stochastic zone the contact can have a rectangular, sinusoidal, serrate and straight-line shapes. Research has established a relation between the contact shape and amounts of mining losses and ore dilution, formulas to calculate standard values are presented. Using suggested method, standard values for contact ore losses can be obtained in a quicker and more reliable way.
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Date submitted2015-08-13
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Date accepted2015-10-29
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Date published2016-04-22
Multicriteria estimation of bearing capacity of geomaterials
- Authors:
- I. A. Brigadnov
In the article the problem of an estimation of bearing capacity of geomaterials as a deform-able solid is considered in the current configuration, which may be as the reference (undeformed) or the actual (deformed). We propose an original variational approach to the problem for stresses in selected subdomains, in which, depending on different engineering considerations, average in-tegral values of different component of stresses are estimated and from their aggregate the bearing capacity of the current configuration of the solid is estimated regarding to given external influ-ences. In each of the selected subdomain the weakest stress field is obtained which is globally bal-anced with external influences. For example, the assessment of the average integral hydrostatic pressure is needed for study of bearing capacity of geomaterials.
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Date submitted2010-07-24
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Date accepted2010-09-17
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Date published2011-03-21
Features technology of modelling waste bank phosphite by results to laser-scanning survey
- Authors:
- M. Yu. Vasiliev
Features of a technique of lazer – scanning survey of waste bank and processing of its re- sults are stated. The estimation of accuracy of survey is executed and the constructed three- dimensional model on which define geometrical parameters for an estimation of stability of highwall slope.
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Date submitted2009-09-01
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Date accepted2009-11-20
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Date published2010-06-25
Mathematical models of technical state estimation of ship elements
- Authors:
- I. I. Nikolaenkov
- A. P. Gospodarikov
The methods of mathematical models estimation of ship elements technical state were worked out in this work. The latter were realized for different conditions of ship elements work.
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Date submitted2009-08-16
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Date accepted2009-10-29
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Date published2010-02-01
Definition of dependent cadastral value estimation indicators of urban land sections (on the example of Kostomuksha)
- Authors:
- O. Yu. Lepikhina
The work is devoted to the analyze of the connection between indices of urban parcels cadastral value. By using several mail factors composite analyze of urban parcels was done. With the help of statistic methods distribution laws of indices were determined. As a result correlation coefficients were calculated and dependent indices were exposed. In the end of the research the main question was answered: is it right to use analyze of hierarchy method for calculating weights of the indices as it is done in the methods of urban area state cadastral valuation?
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Date submitted2009-08-28
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Date accepted2009-10-22
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Date published2010-02-01
Peculiarity of economic investment at gold ore deposit
- Authors:
- P. A. Zhigulevich
In clause dynamics investment development branch is studied. Methodical bases the analysis of the factors influencing acceptance investment decisions and algorithm of a complex estimation investment appeal of the enterprise are offered.
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Date submitted2008-11-08
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Date accepted2009-01-26
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Date published2009-12-11
Principles optimization of expenses for the labour protection of the mining enterprises
Classification of damage from accidents and crashes is given. Procedure optimization expenses for a labour protection and definition of economically sound risk of accidents and crashes is offered. The estimation of economic efficiency of personnel development serving the self-propelled mining equipments on ore mine «Northern» of industrial complex «Pechenga Nikel» is carried out.
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Date submitted2008-11-14
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Date accepted2009-01-17
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Date published2009-12-11
The methodological principles of an economic estimation оf secondary mineral resources from an item of a system approach
- Authors:
- P. V. Berezovskiy
In the article are offered and justified the methodological principles of an economic estimation of secondary mineral resources from an item of a system approach in market conditions. The necessity of application of a system approach as theoretical basis for mining methodological principles of an economic estimation of secondary mineral resources is exhibited. The functional segments of statistical and dynamic methods are revealed at an economic estimation of secondary mineral resources.
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Date submitted1951-07-01
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Date accepted1951-09-09
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Date published1952-03-26
Methodology for assessing the accuracy of mineral reserves calculations
- Authors:
- D. A. Kazakovskii
The currently known methods of calculating reserves cover all cases and specific conditions of various deposits with sufficient completeness. The correct choice of a method from among the existing ones ensures obtaining results with an error, the magnitude of which is determined not so much by the calculation methods as by the detail of exploration. From this point of view, the development of new calculation methods (especially based on preliminary and detailed exploration data) is not a pressing task. It should be borne in mind that from the point of view of accuracy, all calculation methods used in practice are approximately equivalent, with the exception of the arithmetic mean method. Methods for calculating reserves in operational exploration require further development, mainly in the direction of simplifying the calculation technique associated with the use of the numerous data that must be dealt with in these cases. Here, smoothing techniques should be used more widely, as well as methods of mathematical statistics (in particular, correlation theory) to clarify the patterns of mineralization, as well as to delineate ore deposits. Special mining-geometrical graphs should be used more widely, allowing cumbersome calculations to be replaced by comparatively simple graphical operations. In connection with the large number of samples and tested workings, the use of graphs has significantly simplified the calculation of reserves.