Phoenix Geophysics Ltd.

Phoenix, Canada

Phoenix Geophysics Ltd.

Phoenix, Canada
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Andrey S.,National Mineral Recourses University | Ermolin E.Y.,National Mineral Recourses University | Ingerov A.I.,PHOENIX GEOPHYSICS LTD
Geobaikal 2012 - 2nd International Research and Application Conference on Electromagnetic Research Methods and Integrated Geophysical Data Interpretation | Year: 2012

Patom Crater is the modern (ca 500 years old) volcano-like geological edifice comprised of Proterozoic limestone lumps and situated in southern folded rim of Siberian platform. From its discovery in 1949, the crater's origin remains unclear. Impact factor, volcanic and cryogenic models were proposed. As result of present investigations the geological interpretation of magnetotelluric soundings along 5 km profile across of the Patom crater has been performed. The Patom tectonic zone with the mark of Devonian fluidmetasomatic process has been discovered. The zone breaks the layers of carbonaceous shale of sedimentary host rocks. Absence of records of relatively young and considerable geological processes, as well as other geophysical and geochemical data, leading us to the suggestion about the cryogenic model of the Patom Crater origin, like unusual hydrolaccolith.

Babajanov T.L.,Uzbekgeofizika | Kim G.B.,Uzbekgeofizika | Yuldashev G.Y.,Uzbekgeofizika | Fox L.,Phoenix Geophysics Ltd. | Ingerov O.,Phoenix Geophysics Ltd.
SEG Technical Program Expanded Abstracts | Year: 2011

Uzbekistan first used electroprospecting methods for hydrocarbon exploration in 1931. Since 1970, the main electroprospecting techniques used by Uzbekgeofizika (the main geophysical contractor in Uzbekistan) have been MT, LOTEM, and IP (Berdichevsky et al. 2001, Ingerov et al., 2003). MT was the principal method, but application until ca. 1995 was limited by several factors including heavy truck-mounted equipment, restricted frequency range, and insufficient computer capability. Therefore, MT was often followed by LOTEM for greater accuracy and detail and by IP, which can provide parameters associated with hydrocarbon presence in prospective structures. This combined approach increased the success rate of deep drilling. (Ingerov et al., 2003). Uzbekgeofizika acquired modern multifunction EM equipment in 2007; its portability and accuracy has enabled improvements in the application of EM methods to hydrocarbon exploration. The annual EM production of Uzbekgeofizika has attained 6000 MT sites and 2000 LOTEM and IP sites. By the end of 2010, Uzbekgeofizika had acquired over 16 000 MT sites with the new equipment. This large amount of new data generated a high-priority requirement for appropriate qualitative and quantitative interpretation. The authors here analyse some interpretation approaches for 3-D MT data acquired in the Buzakhur area in south Uzbekistan. The closely spaced Buzakhur 3-D MT grid was designed to supplement the uncertain seismic structural map and also to identify prospective targets indicated by local EM anomalies. © 2011 Society of Exploration Geophysicists.

Ingerov A.I.,Phoenix Geophysics Ltd. | Ingerov I.A.,Advanced Geophysical Operations and Services Inc. | Lozovoy A.L.,National Mining University | Mendriy Ya.V.,National Mining University
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu | Year: 2012

Purpose: Application of standard curves (amplitude and phase curves) of interference extremum received by induction sounding with natural sources for the purpose of mapping of geoelectrical horizons of high resistivity. Methodology: On the basis of the results of 1D and 2D physical and mathematical modelling of the behaviour of amplitude and phase curves interference extremums depending on the change of parameters of geoelectrical section was studied. For the removal of static displacement of curves caused by near-surface heterogeneity, the electric logging and seismic data were used additionally. Findings: Empiric dependences for determination of parameters of geoelectrical section on observed periods of amplitude and phase curves interference extremums of magnetotelluric data were established. Originality: The abscissas of standard curves interference extremums of the induction soundings with natural sources are closely associated with the parameters of geoelectrical section. Practical value: The method can be used for express interpretation of the electromagnetic data in order to study the target horizon morphology within oil and gas fields.

Ermolin E.,National Mineral Resources University | Ingerov O.,Phoenix Geophysics Ltd. | Ingerov I.,AGCOS Inc.
76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience the Energy - Incorporating SPE EUROPEC 2014 | Year: 2014

The main parameters of isometric conductive 2-D bodies (shape of the body's cross-section, total longitudinal conductivity of the body's cross-section G, depth H, etc.) can be quickly and accurately determined using the frequency response and the vertical cross-section of the tipper. Research carried out by the authors for 3-D and quasi 2-D (ratio of body's length to width L/a (relative length) is 3-80) has shown that the main parameters for these bodies can also be quickly identified. Unlike 2-D bodies, the body's relative length L/a (the ratio of body's length to width) plays a very important role in this case. The authors have proposed a methodology for determining this parameter using characteristic data points of the tipper frequency response. Since values of the parameters for these bodies are strongly dependent on the body's relative length L/a, a technique for introducing corrections is proposed (correction factors) for determining the true values of anomalous body's parameters. Where the body's relative length is decreased, tipper anomalies (induction vectors) are weakened by several orders, thus highlighting the importance of accurate alignment of magnetic field component sensors to their respective axis's during the course of a field survey.

Senchina N.P.,St. Petersburg State Mining Institute | Ermolin E.U.,St. Petersburg State Mining Institute | Ingerov O.,Phoenix Geophysics LTD. | Savichev A.A.,St. Petersburg State Mining Institute
GEOBAIKAL 2014 - 3rd International Geobaikal Conference 2014: Exploration and Field Development in East Siberia | Year: 2014

Exploration of thin ore bodies covered by effusive rock presents a very difficult geophysical task. Goldbored veins prospecting forms are particularly distinct. Detailed modeling completed by the authors showed that 5-component audiomagnetotellurics (AMT) shows a strong potential for completing this tastk. In essence, the 5-component AMT combines two electroprospecting methods: 4-component (Ex, Ey, Hx, Hy) AMT and 3-component (Hx, Hy, Hz) magnetovariational profiling (MVP). The technology was tested in the field using more than 280 stations with 40-meter spacing along 8 profiles in the remote and difficult to survey Chucot region (Russia). Portable multifunctional 5-generation equipment was used. The use of precision tripods for induction magnetic sensor installations allowed for high productivity and low environmental impact of the work. As a result of data interpretation, the authors propose constructing geology of dykes and defusive host rocks, as well as covering them with tuff and lava. The positions of fault zones were determed. The ore zones are detected as a high resistivity zones. It position define at AMT-MVP maps parameters reliably. The resume of this research is the AMT-MVP is a high-effective technology for gold ore exploration in Chucot Region. Precession tripod using to insatiate magnetic sensors is a very important.

Senchina N.P.,National Mineral Resources University | Ermolin E.,University of Mines | Ingerov O.,Phoenix Geophysics LTD
GEOBAIKAL 2014 - 3rd International Geobaikal Conference 2014: Exploration and Field Development in East Siberia | Year: 2014

The report provides an example of integration of audiomagnetotelluric sounding (AMT) and airborne magnetic surveys for gold-bearing quartz veins prospecting. The ground AMT was carried out in the difficult geological and climate conditions in the Chukotka region. Gold-bearing veins have very small thickness (first meters) which are up to five hundred meters in vertical length. The veins host rocks are covered by thick layer of overlying volcanic rocks (up to 150 m). The contrast of the electrical properties between target objects and host rocks-andesites-provides an opportunity to identify the gold-bearing veins as high resistivity zones. Aeromagnetic survey results allow to distinguish bewteen potentially mineralized zone and anomalies of low magnetic properties having deep roots. Besides that, both methods help to clarify the geological structure of the study area and differentiate tectonic blocks, faults and dikes. Integration of AMT and airborne magnetic surveys gives the opportunity to improve the efficiency of these independent geophysical methods.

Senchina N.P.,National Mineral Resources University | Savichev A.A.,St. Petersburg State Mining Institute | Ingerov O.,Phoenix Geophysics Ltd. | Ermolin E.,Mining University | Kozlov A.,Mining University
GEOBAIKAL 2014 - 3rd International Geobaikal Conference 2014: Exploration and Field Development in East Siberia | Year: 2014

Examples of integrated use of geochemical and mineralogical techniques together with electroprospecting survey of the objects with a complex geological structure in Eastern Siberia are considered. Exploring by regional profiles of magnetotelluric sounding in the area of world-class Pb-Zn deposits Ozernoe allowed to map the deep structure, mineralogical and geochemical studies gave the possibility to forecast Au-Ag, Au-Ba, Au-As and Au-Mo-U mineralization in the territory. Local AMTS-profiling revealed flooded fault zone controlling intersecting auriferous quartz-vein bodies. Integration of AMTS, gamma-ray spectrometry and geochemical survey for secondary dispersion halos overlapped on the lake-marsh deposits territories enabled prediction of indigenous sources of alluvial gold-brannerite mineralization. Geological and geophysical studies of volcano-like Patom Crater and his structure showed his complex deep structure characterized by the presence of carbonaceous rock formations-potential generators of methane, permafrost zone of carbonate rocks under the crater is considered as a buffer for the phase transitions of methane hydrate methane and vice versa, which led to the excavation of limestone boulders on the surface the material cone and subsequent subsidence of its central hill.

Bazinet R.,Phoenix Geophysics Ltd. | Jacas A.,CSIC - Institute of Materials Science | Confalonieri G.A.B.,CSIC - Institute of Materials Science | Vazquez M.,CSIC - Institute of Materials Science
IEEE Transactions on Magnetics | Year: 2014

We introduce a low-noise fundamental-mode orthogonal fluxgate magnetometer for use in magnetotelluric surveys. The fluxgate makes use of rapidly quenched amorphous wire having vanishing value of saturation magnetostriction constant (λ ≈ 10-7) and displaying ultrasoft magnetic behavior. The design of the fluxgate consists of multiple U-shaped sensor heads where pairs of wire pieces are inserted as core material. The novelty of this system resides in the use of a quadruple sensor head. Digital signal processing with effective electronic noise suppression allows this magnetometer to achieve a noise floor of 0.8 pT/Hz1/2 for frequencies above 10 Hz. The possibilities of in situ application are discussed and guidelines on noise suppression strategies are given. © 2013 IEEE.

Ingerov O.,Phoenix Geophysics Ltd. | Babajanov T.L.,Uzbekgeofizika | Kim G.B.,Uzbekgeofizika | Yuldashev G.Y.,Uzbekgeofizika | Fox L.,Phoenix Geophysics Ltd.
73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011 | Year: 2011

A 3D MT survey was undertaken in 2008 in a mountainous region of South Uzbekistan. The seismic method had encountered serious difficulties due to the complicated geology and the rough terrain that prevented vehicular travel. Uzbekgeofizica's electroprospecting crew from Bukhara carried out a 3-D MT survey in an area prospective for gas, moving from site to site on foot. A total of 1017 MT sites were collected in a grid of 200 m x 400 m spacing, using 17 Phoenix Geophysics SSMT System 2000 receivers in the frequency range 300 Hz to 0.0003 Hz. Data analysis shows that MT parameters derived from a dense grid accurately reflect the geology and can map positive structure positions as well as tectonics. More significantly, by using MT parameters and the results of their 1D and 2D interpretation, it is possible to differentiate productive and unproductive structures.

Ermolin E.,Saint Petersburg State Mining Institute | Ingerov O.,Phoenix Geophysics Ltd.
73rd European Association of Geoscientists and Engineers Conference and Exhibition 2011: Unconventional Resources and the Role of Technology. Incorporating SPE EUROPEC 2011 | Year: 2011

There is unique geological structure in the Earth, situated at far mountain area covered by heavy bush at East Siberia. The name of this geological structure is Patomsky Crater, which has been discovered during routine geological survey in 1949 by Russian geologist V.V. Kolpakov. Patomsky Crater is situated about 200 km to northeast from Baikal Lake at east part of Irkutsk region. Since it discovery three geological expeditions in 2005-2008 were curried out to discover the nature of the crater. As only helicopter is the available transport to this area application of geophysical equipment was very limited. Fourth expedition carried out in august 2010 has 7 sets of AMT equipment, enough to provide in short time AMT profile, which crosses the Patomsky Crater in the direction orthogonal to the structure of hosting Proterozoic rocks. 2-D inversion of TE and TM curves as well as tipper data has been done. AMT data show the Craters body has high resistivity at upper several hundred meters depth. This body breaks metamorphosed and folded Proterozoic host rocks. The tipper and real induction vectors data were very useful to determine complicate 3-D structure of area.

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