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Date submitted2007-09-03
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Date accepted2007-11-27
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Date published2008-10-06
New developments in the field of equipment for MTZ and AMTZ methods
- Authors:
- Leo Fox
There are two parallel approaches clearly appeared in elaboration of the fifth generation of multifunctional electroprospecting equipment. Both approaches have multiple channels. The first one (which is more closely related to the previous generations models) has, as the main features, a central (recording, controlling and processing) unit connected by cables to 20-24 one- or twochannel boxes, each with preamplifier, ADC and small memory. Only two channels are used for horizontal magnetic components, all other channels measure horizontal electric components. The second approach (dominating now at the world equipment market) features an unlimited number of independent (without cables) 5-, 3- and 2-channels boxes, all synchronized by GPS. Most recently (in 2005) «Phoenix Geophysics Ltd» released a telemetric multifunctional system under the trade name SSMT.net, which incorporates advantages from both mentioned approaches. Since 2003, a natural field electroprospecting technique, measuring only three magnetic components, has grown rapidly for various types of useful minerals.
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Date submitted2007-09-03
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Date accepted2007-11-28
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Date published2008-10-06
Application of 2DMTZ for oil prospecting in the delta of the St. Clee River (south-eastern Ontario, Canada)
- Authors:
- A. I. Ingerov
2D magnetotelluric surveying with measurements of horizontal component of magnetotelluric (MT) field was carried out by «Phoenix Geophysics» company on 2000 at a prospect in southeast part of Ontario province. The investigations evidences, that МТS data could locate areas of improvement of Silurian limestone reservoir features, which are associated with dolomitization zones along deep faults. Characteristic features of the dolomitization zones, predicted from МТS data, were confirmed by following drilling. Re-treatment of the MT date on 2006 with the use of the latest version of software provided significantly improvement of MTS curves. Results of the concrete geological structure modeling demonstrated, that vertical component data of MT field are more informative to the problem being studied. The key problems are accuracy of setting of MT vertical component data measurement sensor and thermo stabilization of every three sensors. Special equipments (tripods) manufactured under the «Phoenix Geophysics» company contract, provide the both problems adequate solving.
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Date submitted2007-09-04
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Date accepted2007-11-01
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Date published2008-10-06
Electrical exploration by MTZ method in the complex of regional oil and gas prospecting works in the European part of Russia
The electromagnetic (MTS) investigations with the use of Canadian MTU equipment have been carried out along CDP profiles, crossing Central Regions of Russia. The results are presented in the form of seismic-geological sections. Their total extend is 1430 km. The analysis of electric logging of 19 boreholes, disposed in the vicinity of the profiles, has been executed. The composite geological section extending from north boundary of Moscow syneclise to south boundary of Ryazan-Saratov trough has been compiled. Principal electrical conduction horizons of sedimentary cover are associated with Carboniferous – Permian terrigenous complexes. Along sizable intervals of the profiles conduction complexes of Meso-Neoproterozoic age are separated below these complexes. Structural features of sedimentary-metamorphic Paleo-Mesoproterozoic rocks are observed in the consolidated basement. The characteristic features of the geoelectric model of the area of investigations are described. The problems and prospects of electrical methods application in complex of hydrocarbon prospecting investigations are discussed.
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Date submitted2007-09-14
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Date accepted2007-11-12
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Date published2008-10-06
About application of a complex of direct methods of search for coal-hydrocarbons in the process of oil and gas prospecting works of NAK Neftegas of Ukraine
- Authors:
- A. N. Koval
- P. M. Chepil
The results of application of direct prospecting methods for oils and gas deposits in the Ukraine are presented. These methods allows rather fast appraisal of presence of oil-and-gas on large areas with minimal expenses before deep-well drilling. The application of the methods in the oil fields prospecting has allowed discovering set of hydrocarbon deposits in the Ukraine. The complex of direct methods combined with seismic surveys will promote cost reducing of a geological exploration process for oil and gas as whole.
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Date submitted2007-09-24
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Date accepted2007-11-23
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Date published2008-10-06
Development of geoelectrochemical technologies and their complex use in hydrocarbon prospecting
The problems of progression of geoelectrochemical technologies are considered. Simplifying algorithm of the flow aureole modeling is described. Examples of the geoelectrochemical technologies application in the search for ore lodes and oil and gas pools are presented.
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Date submitted2007-09-20
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Date accepted2007-11-20
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Date published2008-10-06
Results of electrical exploration in search of pipe-type objects in the areas of Arkhangelsk region
- Authors:
- Yu. V. Korotkov
Results of employing of pulsed electromagnetic soundings method (MPP) of diamond deposits are presented. Investigations in the past are analyzed. Methodic and results of investigations, which have been out using modern-day equipment and software in Arkhangelsk diamond province, are described. Efficiency of application of the MPP-method in the process of predictive-prospecting investigations is analyzed.
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Date submitted2007-09-25
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Date accepted2007-11-30
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Date published2008-10-06
Integrated approach to the study of complex geologic structures on the basis of marine magnetotelluric studies
- Authors:
- Yu. I. Matveev
- Yu. V. Roslov
- A. Zerill
A novel ocean bottom high-resolution magnetotellurics station is integrated with advanced nonlinear seismic tomography to build a high resolution, geologically accurate upper crust model characterized by a high level of spatial resolution. The integrated model provides the degree of accuracy needed by depth migration to properly image under highly variable covers and severe topography/bathymetry. The resolution of the final depth migration shows the potential of the proposed strategy to increase the value of seismic data and de-risk complex plays exploration programs. Technology has been successfully applied in Gulf of Mexico, North Sea Barents Sea and other oil and gas offshore provinces.
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Date submitted2007-09-04
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Date accepted2007-11-30
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Date published2008-10-06
Results of magnetotelluric studies on the Batolit profile (south of the Siberian platform)
- Authors:
- A. M. Pashevin
- V. A. Tupitsin
- V. V. Gomulskiy
The latest results of regional magnetotelluric surveys along «Batholit» reference geophysical profile are presented. Characteristic features of the Siberian platform geoelectric section are described. The methodic of the magnetotelluric data interpretation is justified.
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Date submitted2007-09-06
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Date accepted2007-11-30
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Date published2008-10-06
Scientific and methodological problems of geological interpretation of the digital database of the materials of deep electrical exploration on the territory of the European part of Russia
- Authors:
- I. S. Feldman
- Yu. M. Erinchek
- A. S. Egorov
The database of digitized regional electrical materials is described. The database covers territories of Ease-European platform and adjusting fold areas (Kuakas, east flank of Uralian fold area, Skiff plate and Timan-Pechora region of Barents fold area). Besides of primary information, the database includes resulting geoelectric maps and sections. The results of their experimental geological interpretation show, that geoelectric data provide: modeling of sedimentary cover which is adequate to seismic data; modeling of blocks and interblock (suture) zones boundaries, which is more reliable that seismic data interpretation; separation of ancient volcanogenic-sedimentary layer in the upper part of the consolidated crust.
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Date submitted2007-09-19
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Date accepted2007-11-01
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Date published2008-10-06
Some aspects of application of electrical exploration methods in the study of gold deposits in Siberia
- Authors:
- A. N. Orekhov
Golden ore objects are rather difficult object for researching them by geophysical methods. The analysis of efficiency of using the electroprospecting methods in the researching different kinds of Siberian golden ore deposits was taken. There was also made a conclusion that for the rising of efficiency of the methods using for the researching of golden ore deposits they are needed to be pointed at the revealing of petrophysical and geophysical zonality, which is individual for each kind of golden ore deposits.
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Date submitted2007-09-16
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Date accepted2007-11-02
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Date published2008-10-06
Frequency-time analysis of time series of magnetotelluric sounding
- Authors:
- M. M. Pechenkin
Article give an account of results magnetotelluric data analysis with application of Morle wavelet.
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Date submitted2007-09-21
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Date accepted2007-11-08
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Date published2008-10-06
Detection of geologic heterogeneities by MTS method data
- Authors:
- I. A. Gubin
New data obtained with magnetotelluric method supplement a seismic and a geological section when oil and gas researches carry out. The magnetotelluric method is considered to be a regional method till recently but it becomes exploring method when new generation equipment had appeared. Magnetotelluric data and seismic data correspond to each other quite well. It allows judging about prospects of oil-and-gas content of reefs. A dispersion of resistivity field allows revealing some features of geoelectrical section.