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15th EAGE International Conference on Geoinformatics - Theoretical and Applied Aspects
- Conference date: May 10-13, 2016
- Location: Kiev, Ukraine
- Published: 10 May 2016
1 - 50 of 94 results
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Role of geoinformation in decision making in the complicated conditions of well drilling
Authors H. Guliyev, G. Afandiyev, A. Kadymov, T. Makhmudov, I. Guliyev and G. HasanovaSummaryThe possibility of estimation and forecasting of trouble intervals (intervals with AHPR, absorption zones) is considered in drilling process on the basis of data obtained as a result of geological and technological explorations. Methods are proposed to estimate the density of drilling fluid, gravity degree of drilling fluid absorption in the complicated conditions. An expression was obtained to calculate the density of drilling fluid. Linguistic rules were also formulated based on fuzzy cluster analysis. Gravity degree of absorption depending on petrophysical characteristics was estimated. Two approaches - statistical and fuzzy were proposed for predictive estimate of gravity degree of absorption depending on the character of input data.
Statistical estimation is performed on value of the absorption coefficient.
In case of lack of information or its insufficiency, the method based on fuzzy cluster analysis is proposed. Five classes were obtained, each of which is characterized by relative gravity of absorption, the corresponding characteristics of layers and the intensity of absorption on the basis of which linguistic rules were compiled for qualitative estimation of absorption degree depending on petrophysical characteristics according to principle ‘if…, so…”.
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The field of atmospheric electricity and the geological structure of the Earth
By M. YakymchukSummaryThis paper present in the theses style the information about the main results of scientific research, obtained by the author recently. A model of the structure of Earth and atmosphere electric field is analyzed. It is specified the interdependence between electrical charge, temperature and pressure, which makes it possible to explain many phenomena, which we observe in nature. The geophysical complex, built on this model basis, finds its application during the hydrocarbons and other minerals prospecting.
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Application of direct-prospecting geophysical method for hydrocarbon potential assessment of large prospecting blocks in Arctic
Authors S. Levashov, N. Yakymchuk, I. Korchagin, D. Bozhezha and V. PrylukovSummaryThe authors continued testing the frequency-resonance method of remote sensing (RS) data processing and interpretation in the Arctic region. In 2014, for hydrocarbon accumulations prospecting the satellite images were processed over four major blocks in the Norwegian part of the former “gray” zone of the Barents Sea and over a large area in the Kara Sea.
In the Barents Sea the RS data were processed within four search sites covering 39742 km2. Area of 3D seismic work within them is 13956 km2. Two anomalous zones of the “gas deposit” type and 13 anomalous zones of “gas+condensate reservoir” type with total area of 1613 km2 were detected and mapped within investigated areas. Relative to total surveyed area (39742 km2) it is 4.06 %.
In area of Universitetskaya-1drilled well locations in Kara Sea the RS data were processed over block of 4150 km2. Four anomalous zones of “oil+gas+condensate» type and two anomalous zones of “oil+gas» type were found and mapped within survey sites. The total area of all anomalies is 510 km2. With respect to the area of the surveyed block this is 12.29%. Within the surveyed block in the Kara Sea the total area of all detected anomalies is significantly larger than those in the Barents Sea.
The received results show the principal possibility of remote sensing, seismic and geoelectric methods integrated application for hydrocarbon accumulations prospecting and exploration within offshore. The direct technology of frequency-resonance processing of RS data allow to investigate operatively in reconnaissance character the most promising areas in the Arctic region for the detection of giant and unique HC fields. This may significantly speed up the development of the oil and gas potential of Arctic region.
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On possibility the values of fluid pressure in reservoirs using for the oil-and-gas prospects assessing within deep horizons of cross-section
Authors S. Levashov, N. Yakymchuk, I. Korchagin, D. Bozhezha and V. PrylukovSummaryThe results of petroleum prospects assessment of the deep horizons of cross-section within some structures and oil and gas fields, as well as local sites for deep wells drilling in the Dnieper-Donets (DDB) and Caspian depression are analyzed. A survey of these areas were carried out with a frequency-resonance technology of satellite images processing using for “direct” searching and prospecting of hydrocarbons (HC) accumulations. The investigation results are given by maps of maximum values of fluid pressure in the reservoir. This is, in fact, a complex parameter, whose value depends of the gas pressure, contained in the fluid or in free form in the reservoir, as well as of its amount, i.e. of the rock porosity. The maps, constructed by the results of prospective structures investigation, are compared with similar maps on the known hydrocarbon deposits. Maps of maximum values of reservoir pressure can significantly narrow down the area of detailed prospecting work of priority character conducted and of prospecting wells location. Taking into account the hydrostatic principle such maps give the opportunity to shape the preliminary assumptions on the depth of hydrocarbon deposits location. The absence within the contours of detected anomalous zones of the “hydrocarbon deposits” type of sites with higher values of fluid pressure in reservoir allow avoids such areas (anomalies) from the list of objects that deserve priority detailed study and drilling. The conducted studies allow to conclude that the results of satellite imagery decoding - this is new information with the “direct hydrocarbon indicators”, which can be useful and in demand at any stage of the exploration process for oil and gas.
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Operative assessment of hydrocarbon potential of prospecting block in the region of Marcellus shale spreading by the frequency-resonance method of remote sensing data processing and interpretation
Authors S. Levashov, N. Yakymchuk, I. Korchagin, D. Bozhezha and V. PrylukovSummaryThe possibility of mobile technology of frequency-resonance processing and interpretation of remote sensing data using for the local areas with increased hydrocarbon (HC) (oil, gas and gas condensate) concentrations detection and mapping within the shale spreading is analyzed. This technology is the “direct” method for oil and gas prospecting and exploration. Experimental studies were conducted in local area of Marcellus shale spreading. The anomalous zones of the “reservoir of gas” (“gas, oil”) type were detected and mapped within the surveyed block. Parameters of many anomalous zones (areas and maximum estimates of fluid pressure in the reservoirs) allow us to classify them as promising objects, the probability of commercial HC inflows from which is relatively high. The observed anomalies should be considered as priority local areas for detailed study by geophysical methods and drilling. This is essentially the “Sweet spots” zones. The received estimates of maximum values of reservoir pressure within the observed anomalous zones vary in a fairly wide range. This indicates that the projected productive horizons can be located both above and below the shale complexes. Therefore, the practically all (available for drilling) interval of the cross-section should be studied, when for the hydrocarbon accumulations prospecting within areas of shale spreading. Anomalous zones with very low values of fluid pressure in the reservoirs should not be considered as priority targets for detailed study. The development of the surveyed area starting from detected anomalous zones will allow significantly reduce the harmful effects on the environment. The tested mobile technology allows detecting and mapping operatively the “Sweet spots” zones within the shale and other unconventional reservoirs spreading.
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Application of frequency-resonance method of remote sensing data processing for ore mineral prospecting in different regions of the world
Authors S. Levashov, N. Yakymchuk, I. Korchagin, D. Bozhezha and M. PetranovskayaSummaryThe results of experimental testing of mobile and operative technology of the remote sensing (RS) data frequency-resonance processing and interpretation (decoding) for “direct” searches of the various types minerals on the ore deposits and prospective areas are analyzed. Exploratory studies were conducted with this technology application within ore bearing areas in the Republic of Kazakhstan, Ukraine, Cameroon, Sudan and Canada. It is shown that for the small objects (lodes) detection and mapping the remote sensing data processing should be carried in a large scale – 1:2000 and larger. As a result of the geological survey of some revealed in 2014 anomalous zones with the help of trenches (pits) and drilling within investigated areas in Madagascar, Sudan and Guyana the rocks with gold mineralization were discovered. This technology inclusion in the traditional complex of exploratory geological and geophysical methods will contribute both to minimize the financial cost for the particular exploration problem solving and to reduce significantly the time to implement them. Detection within the mapped anomalies in different regions of the gold-bearing rocks (with a high gold content in the rocks, including) is a fundamentally important evidence of efficiency of the frequency-resonance principle of remote sensing data processing and interpretation.
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Central Basin of the Bransfield Strait: magnetic anomalies and the formation stages of the Antarctic Peninsula continental margin structures
Authors V.D. Soloviev, I. Korchagin, S. Levashov, N. Yakymchuk and D. BozhezhaSummaryIt is shown that the Central Bransfield Basin magnetic anomalies sources were connected with the neovolcanic zone development processes. Age of linear magnetic anomalies may reflect the cooling time of plateau basalts which formed in a result of periodic thermal regime change processes in the upper mantle. The powerful tectonic movements of border structures had a great influence too. The deep geoelectric boundaries and large mantle heterogeneities distribution in different segments of the Drake Passage can be interpreted as large-scale processes of formation and deep transformation of the primary crust fragments under the influence of sufficiently large diapirs of partially molten rocks.
A possible mechanism was proposed for the evolution of the Antarctic Peninsula continental margin structures and the Bransfield Strait in result of moving the mantle plume to the upper layers of lithosphere and young rift system formation under the trough axis in the Central Bransfield basin. New data give additional information for better understanding the evolution stages of structures at this region.
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Studying of deep layers of the geological medium on the basis of data of seismic exploration and seismology
Authors H. Guliyev, K. Aghayev, T. Volkov and G. HasanovaSummaryThe deep layers of the geological medium are studied on the basis of joint processing and interpretation of data of seismic exploration and seismology. Data on earthquakes were processed, velocity models of the medium were defined on velocities of pressure and shear waves. The value of the velocity of propagation of pressure waves was adjusted on seismic profile on data of seismology. According to the clarified results, sections of Poisson’s ratio were calculated on regional seismic profiles in the South Caspian Basin.
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On applying magnetic method for soil pollution monitoring in Zaporizhzhya
More LessSummaryThe paper is devoted to the study of magnetic properties and contents of heavy metals in soils from Zaporizhzhya - a powerful industrial center. The low-frequency magnetic susceptibility (Xlf) of soils varies within the range 61… 4087×10−8 m3/kg with a median value 271×10−8 m3/kg, and the frequency dependence of magnetic susceptibility Kfd is 0…13 3% with a median value 2,0 %. The low Xlf and high Kfd values inherent to natural soils are observed on the right-bank western part of the city, and low values Kfd <2% and Xlf >10−5 m3/kg are observed in the main industrial zone where steel-mills are situated.
Statistically significant correlation between magnetic parameters and heavy metals contents are found. Magnetic methods can be recommended for monitoring of soil contamination degree in the city of Zaporizhzhya.
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Integration between the remote sensing of the Earth data and geological-geophysical studies for polymetallic ore prospecting
Authors A. Bunina, O. Azimov, S. Stankevich, Y. Dorofey and V. ChepurnoySummaryThe model for automated integration and complex interpretation of remote sensed and geological-geophysical data to evaluate territories ore prospectivity is offered. The integration possibility is demonstrated over the Novotroitska area of the South-Donbas near-fault volcanotectonic depression. The spatial distribution of polymetals prognostic content within the study area is obtained.
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The results of seismic observations in the central part of the Ukrainian shield in 2007–2013
Authors V. Omelchenko, A. Kendzera and V. KuchmaSummaryThe results of the analysis of seismic events recorded in the Ukrainian Shield from 2007 to 2013 are presented. The comparison of seismic activity with the deep structure of the Earth’s crust and tectonic features of the region was accomplished.
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Regularized methods for solving nonlinear inverse gravity problem
Authors E. Akimova, V. Misilov and A. TretyakovSummaryRegularized variants of conjugate gradient and componentwise gradient methods for solving the three-dimensional nonlinear inverse gravity problem of finding the density interface were constructed. The algorithms were parallelized and implemented for multicore processors and GPUs. The model problem with noised synthetic data was solved. The comparison of the proposed methods and the local corrections method in terms of iteration number, execution time and error of the solution was carried out.
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Information products of remote sensing of Earth from space, as the basis of the Ukrainian National Internet-center monitoring and analysis of data for agriculture
Authors B. Busygin, I. Garkusha and K. SergieievaSummaryTo systematize domestic and foreign experience of usage of space remote sensing data, transformation methods for different-level and different-time datasets and program tools for their processing to creation of the National Internet-center of monitoring and analysis of data for solving, among others, the problems of crops productivity forecasting in Ukraine. The review of world achievements in the field of diverse space surveys using for grain agriculture problems solving is accomplished. The main questions related to identification and inventory of agricultural grounds for control of crops condition, definition of soils structure, quality and timeliness of various agricultural procedures controlling, dynamics of development of crops supervision and productivity forecasting are cover. The main requirements are formulated and necessary components for creation of architecture of information, methodical and program implementation of the Ukrainian Internet-center for monitoring and the analysis of space remote sensing data for grain agriculture problems solving are defined. The results received can be used for preparation and implementation of main stages of Ukrainian Internet-center creation for agricultural areas monitoring.
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GEANT4 like computational tool of nuclear geophysics
Authors V. Belokhin and A. ZhemchugovSummaryNuclear geophysical methods are considered to be the most informative and important for monitoring oil and gas fields. Traditionally for their development statistical calculations by Monte Carlo method are used, which allows from one side to reduce natural modeling, and from the other side to obtain parameters fundamentally not achievable by direct measurement, for example, the basic gamma spectra. This technique, though quite expensive in terms of computing resources is both versatile to accommodate a variety of physical processes and to modeling facilities with complex geometries and elemental composition. There are several multi-purpose software packages for the simulation of nuclear processes in the material, among which are the MCNP, FLUKA and GEANT4.
For the nuclear logging methods simulation authors have chosen the GEANT4 package - a multipurpose program complex with open-source software, which has the required functionality. GEANT4 package has been developed at CERN to simulate the physical processes taking place during the passage of elementary particles through matter.
The paper describes the experience of GEANT4 use to simulate the main nuclear-geophysical methods: gamma spectrometry logging, neutron-neutron and pulsed neutron-gamma spectrometry logging.
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Modelling of groundwater level surface as indicator of radiation safety area
Authors O. Scherbak, T. Koshliakova, V. Dolin jun., I. Rudenko and Y. KutskaSummaryThe spatial-temporal dynamics of the upper Quaternary - upper Eocene groundwater complex hydrodynamic regime in the influence zone of Kyiv subsurface radioactive waste storage was analyzed by using of geoinformatical research methods. The presence of groundwater level downtrend and hydroizohypses spatial configuration changes were determined. Based on the results obtained by using statistical analysis the conclusion was made about the low reliability of the provision of groundwater level monitoring data.
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Finite-difference kinematic migration as one of the ways of obtaining information about seismic boundaries and seismic velocities in geological environment
Authors O. Pylypenko, O. Verpakhovska and V. PylypenkoSummaryMigration is divided into kinematic and dynamic. Dynamic migration allows you to show the internal structure of geological environment with all its features as the dynamic parameters of the observed wave field. The kinematic migration gives information about the seismic boundaries and seismic velocity. The result of kinematic migration can be further used to realize the dynamic migration.
The kinematic migration is based on a downward continuation of the time field of a direct and reversed travel-times that is realized by solving the eikonal equation on a special type of grid with finite- difference method. At the same time kinematic migration can be used travel-time curves of the reflected and refracted waves. The report focuses on the subject of obtaining information about the seismic boundaries and seismic velocity in the geological environment using the finite-difference kinematic migration.
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Relation of lineaments network features and distribution of ore objects by the example of the East African Rift area
Authors B. Busygin and S. NikulinSummaryThe technique and results of studying of spatial interrelation between characteristics of satellite images lineaments network and localization of vein type ore objects on the example of East African rift valley area (within Democratic Republic of the Congo territory) is given in the paper.
On the studied area prevail lineaments with azimuths of 0, 45, 90 and 135 degrees which are found everywhere on Earth and form some “normal” global network related with processes of planetary level. In paper it is shown that the perspective scope of an inquiry is studying of deformations of “normal” network which are connected with local geological processes. In particular, it demonstrated that there is a relationship between the localization of ore deposits and the high concentration of lineament deformations, for example, their breaks and turns.
The received results confirm existence of relationship between a structure of lineaments network and the known deposits, making it possible to use lineament analysis data for ore objects forecasting.
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Investigation kerogen types according to pyrolysis of samples (for example, the Dnieper-Donets basin)
Authors Y. Zelenko, O. Dziuba and O. KarpenkoSummaryThe analysis of 60 samples of kerogen based on statistical data processing pyrolytic parameters (pH and temperature index maximum output of hydrocarbons in the cracking kerogen) is conducted. The paper studies kerogen types and nature of saturation of productive strata by the method of benchmarking and comparisons.
The results of data processing obtained by pyrolysis «Rock-Eval» rock samples from wells of different parts of the Dnieper-Donets basin. The research allowed to evaluate the spatial distribution of different kerogen types and determine the nature of the maturity of organic matter within the individual Straton disclosed wells.
There are confirmed different kinds of mature organic matter from existing oil fields and to the potential gas reserves of unconventional type within the studied structures.
The analysis of the spatial distribution of types of kerogen within the DDD based thermal pyrolysis conversion rock and «Rock-Eval». Installed on certain types of kerogen studied structures coincide with the lateral distribution of hydrocarbons in DDD from north - west to south - eastern part, namely oil deposits characteristic of northern and gradually replaced the condensate and gas in the southern part. In the studied core samples predominant type III kerogen, which according to existing classifications, formed mostly from the remains of terrestrial vegetation and paleoumovah continental margins and deltas.
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The ways to improve the technique of seismic microzonation of building sites in Ukraine
Authors A. Shynkarenko and O. KendzeraSummaryThe paper presents the analysis of the existing technique of seismic microzonation of building sites in Ukraine. There are discussed the previous experience of seismic zonation application and the background of general detailed seismic zonation and seismic microzonation technique. Seismic microzonation regulatory documents that are used in Ukraine and abroad are analyzed. There are highlighted main issues of the technique of seismic microzonation of building sites in Ukraine that are: unreasonable selection of the soil volume to be investigated; lack of unique approach to define the relationships between soil attributes and seismic impact features; inaccurate assessment of the correlation between soils seismic stability and groundwater level. There are proposed the ways to solve these issues.
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Magnetovariational response functions 3D models of deep faults
Authors O. Hishchuk, T. Burakhovich and T. PrichepySummaryCalculations and analysis magnetovariational response functions 3D theoretical models of deep regional faults with different inclination angles (900 to 150) were held. The intensity of induction parameters depends on inclination angle and deviations in magnitude W (for model vertical conducting structure 900) of the inclined 600 and 300 constitute the 10% and 30%, respectively. It is shown, that the ratio of the maximum (modulo) values tippler, obtained for the period, corresponding to the maximum frequency response, depending on the inclination angle the subvertical conductor is described logarithmic function. The versatility of this dependence for a other series models raises doubts, which defined complicated, the behavior of the electromagnetic field, arising from three-dimensional conductive structures even elementary forms. The dependence of the angle of incidence of the fault on the parameter distance relationship between the provisions of the maxima at Tmin and Tmax is linear. It is shown, that in the construction and calculation of 3D models real geological environments can with some confidence using conducting deep faults in the form of subvertical structures.
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Geophysical and engineering methods in the study of the pipeline systems
Authors R. Hloba, O. Danylov, S. Korneyenko and Y. HlobaSummaryIt is proposed to apply a set of geophysical methods to engineering surveys when designing and operating linear underground constructions within pipelines. A new method of resonance acoustic profiling being integrated in conventional electrical methods, will enhance the validity of the research data. The study allows for identifying the areas best fitting for laying and operating the pipeline transport system. The paper provides a complex of geophysical methods to guarantee safety standards on the pipeline transport systems when affected by natural and anthropogenic hazards. The study of resonance acoustic profiling will provide data on geological sections, landslide areas mapping, rockfalls, water intrusion, water-bearing horizons, zones of tectonic disturbances and karst cavities. The electrical methods allow for determining probable areas of corrosion sites on the pipeline transport systems: VES (vertical electrical sounding), “remote electrode” (electrometric survey), measuring potential gradient and SEP (symmetrical electrical profiling), in particular.
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Agent-based model of data actualization of online region sustainable development atlases
Authors B. Busygin and A. KachanovSummaryThe paper looks at the problems of automatic collecting and processing the data for electronic atlases. Agent-based model is proposed to solve the problems of searching for the new data and populating the databases from the diverse sources automatically. The proposed multi-agent system for data actualization is described and its subsystem functions are explained.
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Petrophysical thermobaric model of the Eearth’s crust of the Black sea North-Western part along a 25 DSS profile
By V. KorchinSummaryThe new hypothesis of education, existence and disappearance of low velocity zones (LVZ), discovered the DSS method as elastic anomalies of the Earth’s crust is presented in the article. The difficult changes of VP,S=f(PT) for rocks are experimentally set up (regions of velocity inversion are revealed). Zones arise in cases, when at corresponding depths, the temperature gradient exceeds the certain threshold, and the pressure cannot compensate the disturbance of rocks caused by temperature actions. The presence of low velocity zones is the objective reality and they can be everywhere in the Earth’s crust. Their power can be increased with the increase of intensity of thermal regimes or it will disappear with lowering of heat in a lithosphere. In the offered work on the basis of study of connection of interstitial space with the longitudinal waves propagation velocity at high pressures and temperatures in the Ukrainian shield granites samples an attempt more fully to describe a change porosity and fractures of rocks depending on P and Т influence of different depths is carried out, to explain some crust anomalies of rocks unpacking, which can be conductors of migration and localization of deep origin hydrocarbons.
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Experimental investigations of density and velocity characteristics of gneises at high pressures and temperatures
Authors E. Karnaukhova and V. KorchinSummaryElastic-density characteristics of gneises with a depth change on nonlinear laws. The experiments show that the VP=f(H) and p=f(H) dependences have complicated regularities: on the curves velocity and density inversion zones with maxima and minima manifestation are marked. It was shown that rocks differentiation on elastic-density parameters in probed varieties of gneises in laboratory conditions at the atmospheric pressure and room temperature and at the simultaneous influence on samples of deep PT parameters depends on the percentage content of high-density pyroxene and amphibole, and also stratified biotite. These materials enabled to complement and correct before the known information about “velocity-density” dependence on different depths, widely use at a seismic-gravity modelling.
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Uncompression zones of rocks of thermodynamics nature in the earth’s crust of Ukrainian shield central part
Authors V. Korchin, P. Burtnyi and V. KobolevSummaryLongitudinal waves propagation velocity waves and density of rocks depends substantial appearance on pressure and temperatures influence of which must be taken into account at the calculations of these parameters on different depths. From the data of thermobaric petrophysical seismic-gravity modelling the specified material cut of area of the Earth’s crust of central part of the Ukrainian shield is got. Found out the local areas of lowering of ricks density, which, as a rule, coincide with the area of low velocity zones and formed deep thermodynamic conditions. Such uncompression zones of mineral environment can serve one of diagnostic signs at the searches of mineral deposits.
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On solving the structural inverse magnetic problem of finding a contact surface in the case of arbitrary directed magnetization
By V. MisilovSummaryInverse structural magnetic problem of finding a contact surface between two layers with constant magnetizations was formulated for the case of arbitrary directed magnetization vectors. An effective numerical technique for solving this problem was proposed and implemented for multicore processors. Model problem with synthetic magnetic data was solved.
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The relationship between low-frequency magnetic susceptibility and heavy metals in soils of Odesa
Authors I. Stakhiv, I. Tsyupa and K. BondarSummaryThe results of studying relationship between low-frequency magnetic susceptibility and heavy metals (Cd, Mn, Cu, Ni, Pb, Zn) in soils of Odesa are represented in the paper. Actual data analysis shows, that the level of pollution in the city remains high. It is obvious firstly from the high values of magnetic susceptibility 300-625·10−8 m3/kg, and secondly from the high concentrations of metals - indicators of anthropogenic pollution (Cd, Cu, Pb, Zn). The content of these metals demonstrated significant correlation coefficients with low frequency magnetic susceptibility of soils. The map of spatial distribution of low-frequency magnetic susceptibility shows that southern and central parts of the city are polluted, a high values are mainly confined to highways and plants. Pollution load index is high (up to 4) for most points of the study area, thus the soil of Odesa are in poor conditions.
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Results of experimental electromagnetic studies of the Crimean region
Authors T. Burahovich and A. KushnirSummarySpatial-temporal pattern of distribution of geomagnetic variations and electric field on the Earth’s surface was obtained as a result of modern experimental observations conducted in 2007–2013 along 9 profiles (48 points) by the methods of magnetotelluric sounding (MTS) and magnetovariation profiling (MVP). These profiles cross various geological structures of the Crimean region. It is possible to estimate the value of electrical conductivity and vertical and horizontal geo-electric structure. The processing of these data is done using modern software system PRC_MTMV (author Varentsov Iv. M.) that provides the common noise-protected evaluation of the impedance, tipper and horizontal magneto-variation response according to synchronous MT/MV records. The main result of qualitative interpretation of geo-electric research is the detection of high conductivity regions in the Earth’s crust and upper mantle of the Crimea, that are characterized by the variations of conductivity, depth and configuration. They characterize the various geological structures differently. The sub-vertical conductive zones often coincide with the fault structures, most of these objects are confined to the suture zones between tectonic elements such as the East European platform and the Scythian plate, the Scythian plate and the Crimean mountain, North and South Kerch zone. This fact may reflect high permeability of the suture zones for deep fluids in the process of their formation.
Although the qualitative interpretation of the experimental data of magnetotelluric sounding (MTS) and magnetovariation profiling (MVP) provides inconsistent understanding of the depth distribution of the Crimean region electrical conductivity, the combination of these methods allows constructing the model of resistivity distribution within a three-dimensional environment much more accurately and adequately to the observed experimental data.
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Selection of the similar gidrogeodynamic mode zones within the Zhytomyr region with the tools of information and spatial analysis in GIS
Authors O. Pona and L. DavybidaSummaryThe question of distributing of crowd conditions of the cross-correlation connections between the mode of water-tables vibrations and sun activity on the territory of the Zhytomyr Region was considered and the maps which made it possible to set basic law conformities of these connections were created. Territorial homogeneity of the long-term groundwater mode was analyzed within territory of the Zhytomyr Region. The selection of the similar gidrogeodynamic mode zones within territory of the Zhytomyr Region was executed.
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Studying of modern flooding of southwestern part Krivbass by geophysical methods
Authors P. Pigulevskiy, V. Svistun, S. Slobodyaniuk and A. KyryliukSummaryThe results and methods of identifying and mapping areas of flooding by modern geophysical methods at the south-western part of Kryvbas are presented. On the basis of electrical properties of rocks data, a materials synthesis of engineering-geological conditions study and, above all, hydrogeological, and methods of optimum complex and methodic of geophysical studies were identified. To study the degree of flooding of the southwestern part of Kryvbas were used geoelectric methods in modifications vertical electrical sounding and natural field involving biolocation research and large-scale maps of the gravitational field. It was established that the zone of increased expressive horizontal gradients, which coincide with the natural deformation zones wide field or abrupt changes of apparent resistivity are regions of increased permeability of water. Aquifer in Quaternary sediments has planar spread with different levels of standing water. The separate areas with a natural (along rivers and large beams) and anthropogenic origin (dumps, quarries, tailing) are allocated. The level of capillary moisture is placed above the ground water level and, by our opinion, characterizes the depth of surface evaporation. Received information from results of electrometric and biolocation research is very important for solving agricultural problems - humidification control or depth of evaporation, as well as for administrative decision-making at various levels in order to minimize the effects of the activity of man-made objects (sludge storage tanks, reservoirs).
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GIS modeling of the groundwater levels to the intensive flooded areas (on the example of the Zhytomyr Region)
Authors Y. Bilinska and M. TymkivSummaryActual problems of development of the natural processes of flooding for the territory of Ukraine. The technique of regional groundwater level modeling based on geoinformation approach was created. The predictive modeling of the groundwater levels within the territory of Ukrainian Polissya was carried.
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Conductivity anomalies and mineral resources of the central part of the Ukrainian shield
Authors B. Shyrkov and A. UsenkoSummaryIt was discovered the different spatial orientation of the condactors in the central part of the Ukrainian shield to use the three-dimensional geoelectrical modeling. They correspond the sublatitudinal and submeridional superficial and deep conductivity anomalies. Involvement of the experimental results of magnetotelluric sounding (MTZ) and magnetovariation profiling (MVP), structure analysis data, geochemistry, mineralogy makes it possible to carry out the regional and local forecasting of the mineral deposits within the Ukrainian shield. It was established that low-resistance anomalies are confined to the areas of the metasomatosis to extend along the fault zones. are The most of the ore deposits, including Savran’ and Kapitanivka ore fields within the Golovanivsk shear zone and deposits of graphite, uranium, titanium, iron ore, lithium are localized within these limits.
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Development of geoportal of natural-reserve Fund of Ukraine
Authors V. Demidov and E. KravchenkoSummaryTo store large enough size of spatial data the development of geoportal is the best solution for the presentation of geodata and automatic report generation. The basic principles and technology of geoportal development for natural-reserve Fund (NRF) of Ukraine are presented in the paper. To create the geoportal the objects of national NRF has been inventoried and database of NRF in Ukraine has been actualized. The software solution to storage of large size of geodata, access and visualization was proposed. This solution involves the use of Open Source products such as PostgreSQL (with the extension PostGIS), GeoServer, and Apache, which minimizes the costs of developing of geoportal.
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Interpretation of high-resolution magnetic survey integrated in archaeological GIS (on example of Hotiv Scythian hillfort)
Authors M. Daragan, M. Orlyuk, A. Romenets and K. BondarSummaryAs a result of geophysical data interpretation, all anomalies, that can match archaeological objects on magnetic map of Hotiv Scythian hillfort, integrated into specialized GIS of this archaeological monument were localized. It was established that the total number of archeological objects that could be correlated with ground dwellings or dugouts (with already studied) on the area covered with geophysical survey and excavations does not exceed two dozen. Available data indicate poor population occupancy of the settlement in the 6th century B.C.
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A search for connections of gravitational influence of the Moon and the Sun with earthquakes of Carpathian region of Ukraine
Authors A. Kazantsev and L. KazantsevaSummaryIf there is an influence of the Moon and Sun on the occurrence of earthquakes, the physical nature of such influence can only be the gravitational. A possible gravitational influence is caused by the resultant tidal forces of the Moon and the Sun, but not by their separate actions. The calculations algorithm for the tidal forces of the Sun and Moon and for their resultant is described. Relative changes of these forces for different zones on the earth’s surface in time and at various depths are presented. Preliminary recommendations for searching of connections of gravitational influence of the Moon and the Sun with earthquakes was made.
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The analysis of the relationship between the phases of the Moon and the occurrence of landslides
Authors O. Pona, L. Shtogryn and D. KasianchukSummaryThe paper presents the primary statistical analysis of the coherence of extreme precipitation events with the phases of the Moon the length is 64 years, which allowed us to see the qualitative and quantitative relationship of periodic regularities in the influence of the Moon on the weather, in particular, on the formation of long-term anomalous precipitation, which in turn are a trigger for activation of landslide. It was revealed that the Prykarpattya in most cases, the abnormal rains in the last or first quarter Moon. The consistency of the frames, structures, spectra extreme precipitation taking into account the lunar phases and periods of activization of landslides indicates a possible link between them.
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Automated of calculation the corrections of radio logging for devices of the Soviet-Russian type
More LessSummaryAt one stage of data processing neutron logging in the calculation of porosity factor, there is a need to insert corrections for downhole conditions. “Geopoisk” provides a tool by means of which you can perform this task. However, problems lay in the fact that all algorithms were in the form of formulas, that is in a text file (code in the language “Gaosi” compiled module “Calculator”) which must be edited for correct calculations of particular cases, which is problematic for non-expert users without programming skills.
The aim of this work was to develop a dialog application that is integrated into the “Geopoisk”, which allows, by means of user interaction with its interface, to make settings for the calculation of correction factors, add them, and get a formula (code) without interacting directly with it.
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Creating of maps of investigation of spatial distribution of major chemical elements by electron probe microanalyzer and using it for understanding ways and sequences of crystallization fusion
Authors O. Loshakov and O. RybnikovaSummaryIn this article there was an aim to understand the way of crystallization a kind of granite from deposit of Zhytomyr region, Ukraine. According to the authors it can be proved after deep researching of mineral and chemical features of this rock by precision geochemical equipment. At the beginning electron probe microanalyzer had used and it helped to create the maps of investigation of spatial distribution of major chemical elements. In this article there was information about the method of creation maps, was noticed software that have used. As a result obtained models are shown. Some conclusions and ways of possible future activity have made after work with them.
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Induced seismicity and seismotectonics of Nadvirna oil and gas area (Ukrainian Precarpathians)
Authors L. Nazarevych and A. NazarevychSummaryDetailed analysis of seismicity and seismotectonics of Nadvirna oil and gas area (Ukrainian Precarpathians) is made. Association of local earthquakes to the faults, breaks and midwater surfaces of thrusts and folds surrounding structures with oil and gas deposits is revealed and some of the specific characteristics of their foci are analyzed. Local seismicity (activation of which took place in 1996–2012) is regarded as induced, that is, as caused by changes (during the oil and gas production) of hydrodynamic and geomechanical regime of oil and gas bearing and surrounding geological structures the relaxation of tectonic stress which was accumulated in these structures as a result of analyzed regional geodynamic processes.
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Mudflows risks. Assessment of mudflow risk on the example of east part of the Upper Tisza basin
Authors T. Chepurna, D. Kasiyanchuk, E. Kuzmenko, I. Chepurnyj and Y. BilinskaSummaryThe method of determining the reduced mudflow collective risk based on the calculation of average space-time probability of mudflows, partial total area of alluvial fans of mud over the period, plane of maximum destruction, population density, coefficient that takes into account the availability of protective systems in the area. Built cartogram assessments resulted of debris risks to administrative-territorial units (town and city councils).
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The structure and components of information-analytical system of natural-technical complexes monitoring and assessment (for Transcarpathian region)
Authors O. Ivanik, M. Nazarenko, S. Chomenko, O. Mykhaylenko and S. ZamkovetsSummaryThe consideration is given to the general structure of the of information-analytical system of natural-technical complexes monitoring and assessment (for Transcarpathian region). Geodatabase, data collection, processing and service subsystems are the main functional links of the developed system. The basic functional tasks of the system have been defined. They include the input of initial observations information, database information, solving of spatial analytical tasks, generation and printing of reports; work on georeference data (analysis and visualization of geospatial data, developing of risk models) and forecasting of the complex systems behavior under the influence of hazardous geological processes.
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Interrelation between neotectonic movements and structural formation in Kanev area
Authors L. Tustanovska, G. Ivankevich and E. YahnoSummaryResearch of tectonogenesis within the Near-Kanev Dnieper area has been shown that regional and local tectonic structures include a variety of shapes and diverging at all stages of development. The method of structural morphometry adapted to the environment of GIS has been used for the analysis of morphogenesis and tectonogenesis. A different genetic models of paleorelief and modern surface have been developed. It is confirmed that tectonic movements within Kanev dislocations had differentiated character that appears on different order morphometric maps. Morphometric maps reflect the gradual formation of dislocations under the influence of tectonic movements, external factors (denudation, accumulation, erosion and glacial processes) and diapir formations. Tectonic scheme of local structures and dislocations has been proposed. It has more than 40 local dislocation structures. The special consideration is given to interrelation between relief formation and tectonic movement. It enables to allocate anticline and syncline structures of different orders and identify their features.
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On the restrictions of the digital geomapping systems during the geophysical anomalies modeling
By Y. DubovenkoSummaryPurpose. The new requirements for the correctness of meso-scale regional constructions according to the data of gravitational and magnetic fields are analyzed. The transition of the interpretation facilities of these fields to the new field and media models is postulated. These models must meet the new requirements to the methods of observation and practice of interpretation. From this point of view, classic formulations of linear boundary value problems for gravity and magnetic should be regarded as first approximations of media.
Design/methodology/approach. It was determined that at the transition to more accurate models of regional media one should take into account the effects of the locality and the vector nature of the appropriate anomalies. Because of this, we brought new means for image analysis of initial data – digital maps.
Findings. The limits of applicability of visual images of the original models are analyzed. It is noted that for the most correct reconstruction of geological surfaces it is advisable to draw soft packs, which use the finite element method for surface interpolation, with basis in the form of bicubic B-splines. It is pointed out that in the construction of sections from the cross-sections of these surfaces can be automated the composition of some of its geometric characteristics. The information about the errors of visual analysis and the formal classification of maps according to the analysis is compiled.
Practical value/implications. The mechanisms of formation of false stereotypes of the development apart from a priori geological knowledge are illustrated by the several examples. The tool for the efficient processing of large geophysical datasets is proposed, Isoline program. The dependence of the parameters of numerical solution on the method of data interpolation is defined. The prospects for simulation by the digital maps are listed out, as far as the restrictions on the quality of the source data and requirements to the parameters of their filtering.
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Application of geophysical methods holography to study the deep structure of Korosten pluton
Authors M. Bankovskyi and A. GeikhmanSummaryApplied the idea of a common wave nature of all potential fields of geophysical holography method to build a real tool to help seismic methods in the study of the deep structure and the search for mineral deposits in the territory of Korosten pluton in the Ukrainian shield
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Application of geophysical holography in the search for oil and gas in the Ukrainian Carpathians
Authors M. Bankovskyi and A. GeikhmanSummaryApplied the idea of a common wave nature of all potential fields of geophysical holography method to build a real tool to help seismic methods in the search for oil and gas in the Ukrainian Carpathians.
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Burial History Modeling of the Taranaki Basin (New Zealand)
Authors I. Titenko and I. VirshyloSummaryThis investigation was made to study burial history of Taranaki Basin, that situated on the west coast of the North Island of New Zealand. It produces from about 20 fields, ranging from the giant Maui gas-condensate field. The basin characterize by complex tectonic history. In evolution of Taranaki Basin it can distinguish two major tectonic event. First it’s rifting in the start of evolution of the basin and second it’s volcanism in the Miocene, which led to the formation of hydrocarbon migration paths, traps and greatly influenced to the generation of hydrocarbons.
Novva 1D Modelling software used to build the models. 1D modeling of burial history of basin was made for four different wells on the base of wells data, geochemistry and paleogeography. Determined that Rakopi and North Cape major Cretaceous source rock are completely matured, but have significant different generation histories. The influence of the Miocene volcanism on the thermal history of the basin is presented. The results provide important information about generation and hydrocarbon prospects in this region.
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Statistical models of results comparing of roller-bit and core drilling studying while mining exploration of iron ore deposits
Authors A. Plotnikov, A. Belous and M. KuryloSummaryComparison of sampling results of roller-bit, core drilling and trench sampling were held for Yeristovske deposit of banded iron formation. Comparison was done for contents of total iron, iron associated with magnetite and silica.
Studying of different sampling methods of banded iron formation allows choosing the best method for mining exploration of Yerystivske deposit. For this comparison, the experimental block was selected in the rocks of main productive strata deposit К25. Data of chemical sampling after roller-bit and core drilling showed that variances of total iron and iron associated with magnetite vary, but mean values are similar. Dispersions and mean values of data for quality concentrate and sampling after roller-bit and core drilling are not different. Taking into account results of the comparison, it is recommended to use sludge with core drilling while mining exploration of banded iron formation. Geophysical methods give correct results in a case of adjustment in accordance with chemical core sampling.
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Influence of GPR measure step and depth of investigation on quality of GPR profiles
Authors A. Chernov and O. LoshakovSummaryIn that paper results of investigation on experimental geophysical polygon are represented. The aim of investigations was to find out settings of measure step and depth of investigation to get proper differentiation of buried objects on GPR profile to the depth of 4 meters in the shortest time. Profiles were recorded by the same device VIY2-300 GPR (transmitter and receiver antennas’ frequency is 300 MHz). The results of experiment show, that to localize steel pipes (diameter 5 cm and length from 1 m to 2 m), border between void (styrofoam), dripped soil and natural soil on depth to 4 meters, measure step on experimental field should be >127 mm and proper depth of surveying is 3–4, 6 and 9 meters. Achieved results, related to settings should be tested on other sites to make decisive conclusions. Further investigations related to that topic are going on.
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Seismicity of Ukrainian Precarpathians in the context of tectonics and vertical Holocene movements
More LessSummaryThe study of seismicity in Ukrainian Precarpathians for the historical and instrumental observation periods in connection with tectonics and vertical Holocene movements is carried out. The seismicity here has the spatial and temporal peculiarities. It is clearly differentiated by areas and energy potential. The analysis of seismicity detect the main seismoactive faults in the region. That are Precarpathian, Shopur-Nadvirna, Turyanka, Hutsul faults. Majority of local earthquakes are localized in the zone of influence of these faults. Most seismic activity of Precarpathian fault is observed recently in the Nadvirna city area. Relationship of local earthquakes sources with vertical movements in Precarpathians for the Holocene period was analyzed. It was revealed that all earthquakes sources are located in areas of positive integral vertical movements. Predominant number of earthquakes occur in morphostructural neotectonic units in the crossing of Precarpathian fault with faults of subdiagonal north-eastern orientation, in areas with a total amplitude of the vertical Holocene movements in the range +5,7 ÷ +10,2 m.
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Preliminary results of magnetic investigations at Starunia oil-ozokerite deposit (Carpathian Region, Ukraine)
Authors O. Menshov, R. Kuderavets and I. ChobotokSummaryHydrocarbon migration and microseepage effect, which change the composition of magnetic minerals in well strata and near-surface geological horizons, as well as soils, can cause local magnetic anomalies and changes in the magnetic properties of soils. Understanding the effects of hydrocarbons on the magnetic mineral diagenesis is of great importance. The purpose of our magnetic studies at Starunia is to characterize the local magnetic field upon Starunia oil and ozokerite site. The specific objective of the paper is to investigate the lateral and vertical variability of the magnetic properties of the soil in the outcrops of the Velyky Lukavets river valley and near the Nadia-1 well in order to establish their possible relationship with hydrocarbons. Starunia is the small village in the Ukrainian Carpathians. This place became the world famous thanks to the paleontological discoveries of large Pleistocene mammals in the first half of the 20 th century. The Starunia oil-ozokerite deposit occurs in the Boryslav-Pokuttya Unit of the Carpathian Foredeep, which is the main oil- and gas-bearing part of the Ukrainian Carpathians. The Carpathian thrust-and-fold belt consists of a number of nappe, thrusted northeastward. We performed the measurements of the magnetic field along the Mag1, Mag2 and Mag3 profiles. The soil magnetic susceptibility was measured along Mag1 profile. The soils were sampled for the laboratory magnetic measurements The significant contrasts of magnetic field with the local negative magnetic anomaly of about 30–35 nT and width of about 700 m was identificated upon Starunia oil and ozokerite field. The origine is connected with the Vorotyshcha Beds layers and lenses of salt rock as well as numerous veins of ozokerite. The spatial position of this anomaly is correlated with the Rinne fault on which is leaking to the surface oil and clay pulp with salts of different composition.
The high hydrocarbon content in the near-surface sediments and soils within the Starunia site must be associated with hydrocarbon migration from deeper accumulations to the surface, which led to the formation of newly magnetic minerals. We suggest that magnetic anomalies and magnetic susceptibility of soils can be indicative of the presence of hydrocarbons if used along with other geophysical and geochemical methods.
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