Knowledge Base

Geoelectrics using industrial magnetic fields: study, technology, examples

The work is dedicated to the development of the method of inductive sensing, based on the use of industrial magnetic field (PMP) formed by a collection of various types of stationary sources of industrial region. The need for its application arises in dealing with various kinds of geotechnical, environmental and other types of problems in areas of high impact of industrial fields, it is an essential obstacle to the use of traditional methods Electrometry. Main attention is paid to theoretical and experimental studies of this method, methods of processing and interpretation of the results of observations, the creation of hardware and software, and field survey technology. Examples of the successful application of this method in solving a number of urgent tasks, as well as the problematic issues to be addressed in order to further its improvement and development. The results of the research may be useful both geoscientists involved in the decision of geological problems and the study of the functionality of industrial fields, as well as professionals engaged in the design and control of a secure operation of industrial facilities.

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Interpretation of electrical sounding using the ZOND software system

The methodological principles and methods of computer interpretation of electrical soundings, implemented with the probe system of programs. Particular attention is paid to improving the uniqueness of operatively-sti and geological richness of content produced the results-ing with current hardware and teaching opportunities cart-resistance method. Examples with Applications, developed methods and techniques for solving various types of tasks.

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Multielectrode electrical soundings with the usage of inversion array

Abstract: the article deals with the possibilities of the multielectrode measurement principle usage for the development of the electrical sounding technology on the base of the AMS-ZOND hardwaresoftware package. The main aim of new technology creation is the increasing of the field work efficiency for the geological section investigation in the depth interval approximately 200 meters, taking into account the specific peculiarities of the existent interpretation programs. The technique and technology of the group sounding method have been designed, also the possibilities of the applying of inversion array, based on the reciprocity principle, have been investigated with the purpose of the multichannel equipment usage. Measurements are conducted with the predetermined ratio “noise/signal”, which is controlled by the AMS-1 equipment, for the decrease of the enhanced noise level effect. The results of the experimental work show the productivity increase up to 4-5 times in comparison with the traditional vertical electrical sounding method with the adequate accuracy of obtained measurement results.

Key words: multielectrode soundings, electrical tomography, group soundings, reciprocity principle, inversion array.

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Studying of dams with complex electro methods

The experience of the application of complex electro techniques, including vertical electric sounding and method of natural field, as well as the evaluation of its effectiveness in adverse conditions by using advanced technologies of the field work on the example of the study rockfill dam in order to detect the possible presence of zones of increased decompression of soil and filtering water.

Keywords. The electrical sensing, the method of natural field, technology, dam, filtration processes.

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Electric surveys in conditions of urbanized territories

Abstract. The substantiation and development of electric methods complex are considered, which allows to estimate the physical condition of rocks and the dynamic of it’s variation in industrial zone. Instances of it’s effective applying for geological structure investigations with a purpose to control and predict possible negative physical-geological processes are shown as the example of a salt deposit.

Key words. Electric survey, industrial electromagnetic fields, electric sounding, monitoring.

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About the results of the electrical prospecting possibilities research for the oil deposits investigation under the geoelectrical conditions of Perm Region

Abstract. The peculiarities and intensity of the hydrocarbons manifestation in the field of the electrical parameters of the subsurface part of the section up to a depth of 60–80 m and also 200 and 600 m for the particular areas were investigated on the example of the survey of the number of oil deposits in Perm region for the solving of ecological and test oil search targets. The complex of complementary methods was formed to conduct oil prospecting in the conditions of urbanized territories (or with the help of the specially constructed generator for the fixed frequency setting). It includes the induction sounding method which is based on the usage of industrial (or specially generated) electromagnetic fields and provides the efficiency of the regional investigation conducting and getting of tentative information about the presence of the perspective oil areas; and the combination of conventional methods: electrical sounding, transient sounding, induced polarization method for the getting of the information about different electrical parameters of rocks in overlapping intervals of the effective depths which are controlled by each used method with the purpose of detailed verification investigations conducting on the oil perspective areas determined with the help of the regional survey. The test of the developed technology on the example of the Belskoe oil deposit has shown the accordance of the obtained results and the prior information about the spatial location of the increased oil content areas and the prospectively of it’s further development.

Key words: electrical prospecting, prediction of hydrocarbons accumulations, industrial electromagnetic fields, electrical sounding, induction sounding, induced polarization.

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The monitoring control of the medium physical condition by electrical methods on the potential dangerous territories of the Earth’s surface deformations creation

Abstract. Methods and technology of monitoring control of the geological medium physical condition on the territory of salt deposit for the purpose of possible failure phenomena prediction are considered. The technology is based on the usage of periodical territory investigations by the electrical sounding method in the complex with remote sensing observations on identified the most dangerous areas. The system of remote sensing monitoring observations is realized on the base of geometric sounding principle applying with the multichannel areal measurement of the generated electrical field, it allows to control the physical condition of rocks in different effective depth intervals with the constant position of electrodes. In this case the signal recording is out of the dangerous zone with the help of the system of line communication and the commutator of channel switching. On the practical example the information value of obtained results with advanced economical effectiveness and decreased risk of field survey conducting is shown. During the analysis of the spatio-temporal behavior of electrical resistivity it was identified that dynamic parameters are the most informative for determination of potential dangerous zones, in particular the velocity of resistivity change, which allows to estimate the availability of active geological processes on the investigated territory. The obtained data of monitoring measurements accord with the results of geodetic control and allow to get information about the behavior of stressedly-deformed condition of rocks, which is necessary for the prediction of the risk level of considered territory and possibility of discrete subsidence there.

Key words: monitoring, salt karst, electrical sounding, remote sensing observations, technology, failure phenomena, prediction.

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The technology integrated engineering and geophysical surveys for the diagnosis of the condition of hydraulic structures

Develop stability control methods and forecast physical state waterworks (GTS) – reservoirs, ponds, dams, levees, is very relevant, as the violation of their functioning is related not only to the possible significant economic and environmental damage, but sometimes able to cause accidents, pose a threat to human life. Only in the Perm region there are more than 1,100 different kinds of existing GTS.

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Engineering-geophysical investigations under conditions of undermined areas

Key words: engineering-geophysical investigations; undermined territory; seismic exploration; electrical exploration; electromagnetic sounding; man-made electromagnetic field survey.

Abstract: The article describes research results of the ground base of a structure in an undermined territory. A survey complex including a set of conventional and unconventional methods (engineering seismics, electrical exploration, georadar sounding, man-made electromagnetic field survey, thermal imaging survey) was used for these purposes. Physical and mechanical properties of the soils are estimated. Some necessary recommendations are given to the design enterprise to continue assessing the technical state of the territory and develop the measures to ensure the building structures reliability.

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Evaluation of oilfield pollution of surface karst massifs methods Electrometry

The example of the Perm region.
V.P.Kolesnikov (Perm State University); S.M.Kostarev (OOO “PermNIPIneft”)

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The use of computer interpretation of electrical prospecting data technology in the study of karst areas

This publication describes the experience of using the interpretation of electrical soundings computer technology with software systems “Probe” in the study of the karst areas in one of the district of the Perm region Kungur to pre-study the possibility of construction of civil engineering structures.

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Underground rapid-sensing method for the study of space okoloshtrekovogo

Geoelectrics are one of the basic methods used during ground and underground mining geophysical work in order to ensure safe mining VKMKS.

Improving the efficiency of this method is inextricably linked with the improvement of its hardware-methodical maintenance, increase adaptability and efficiency of field survey.

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Application of the methods and Electrometry technologies for search and geometrization technogenic accumulations of fluid in the surface of the geological environment

The problem of negative impact on the geological environment of human activity results is becoming increasingly important in recent years. Particularly difficult cause of pollution in the environment in urban areas and in areas with difficult geomorphological conditions. In the areas of oil production and the problem of finding geometrisation technogenic deposits of hydrocarbons and brines due not only to the environmental risk of the development of this process, but the irretrievable loss of valuable hydrocarbons.

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Express Electrometry methods in detecting and monitoring the status of zones violations waterproof stratum in a salt mine

This article discusses the experience of electrometry to obtain rapid information on the geological features of the section on one of the mines Verkhnekamskoye potash deposit in an emergency situation in autumn 2006.

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In search of electromagnetic earthquake precursors

Natural phenomena associated with the tectonic activity of the Earth, constantly remind myself disastrous consequences, resulting in a large loss of life and destruction of all kinds of civil and industrial constructions. The problem of early detection, assessment and forecast of negative geological processes caused by tectonic activity, has always been and remains one of the most relevant to humans.

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Application Electrometry methods for problem solving oilfield geoecology

Among geophysical methods occupy a special place methods Electrometry. These methods are very inexpensive, fairly productive and have a broad arsenal of tools for investigation of the geological environment. Penetrating deep into the Earth’s interior, electric and electromagnetic fields (natural or artificially created) are a wealth of information about the structure and the physical state of rocks forming the incision.

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The use of computer interpretation of electrical prospecting data technology in the study of karst areas

This publication describes the experience of using the interpretation of electrical soundings computer technology with software systems “Probe” in the study of the karst areas in one of the district of the Perm region Kungur to pre-study the possibility of building civil buildings.

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Diagnosis of dams using NDT methods

The development of control methods for the stability and prediction of the physical condition of waterworks (GTS) (reservoirs, ponds, dams, dykes, etc.) is very relevant, as the violation of their functioning is related not only to the possible significant economic and environmental damage, but sometimes able to lead to accidents, dangerous to human life (people). Only in the Perm region there are more than 1,100 different kinds of existing hydraulic structures (GTS) – reservoirs, ponds, dams, etc .. According to the inventory 2003-2006 over 170 (13.7% of them) need major repairs or reconstruction.

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Engineering-geophysical investigations under conditions of undermined areas

Abstract: The article describes research results of the ground base of a structure in an undermined territory. A survey complex including a set of conventional and unconventional methods (engineering seismics, electrical exploration, georadar sounding, man-made electromagnetic field survey, thermal imaging survey) was used for these purposes. Physical and mechanical properties of the soils are estimated. Some necessary recommendations are given to the design enterprise to continue assessing the technical state of the territory and develop the measures to ensure the building structures reliability.

Key words: engineering-geophysical investigations; undermined territory; seismic exploration; electrical exploration; electromagnetic sounding; man-made electromagnetic field survey.

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About increase of unambiguity of interpretation electric sounding

A new method is proposed to improv the uniqueness of the automatic interpretation of the vertical electric sounding (VES) date, which is based on the use of combination of regularizing elements, involved in the interpretive process in its basic stages. Are given for extending the inverse problem, the general scheme of constructing the algorithm and methods for its implementation.

Key words: vertical electric sounding, computer interpretation, regularization , technology.

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The results of research on the methodological and interpretive software Electrometry in solving environmental and mining problems

This publication describes the results of laboratory research of ground and underground Electrometry Institute of Geological Sciences in 2001, is a natural extension of research work conducted in the previous period [3]. One outcome of this work is a complex of complementary methods, providing the possibility of physical and geological information on a given part of the section within the salt and adjoining over-and-salt deposits in relation to VKMKS conditions.

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