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Academic literature on the topic 'Prospecting Geophysical methods Oman'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Prospecting Geophysical methods Oman"

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DAVYDOV, Vadim Anatol’evich. "Geophysical surveys in the area of the Krylatovskaya water well." NEWS of the Ural State Mining University 1 (March 15, 2021): 65–73. http://dx.doi.org/10.21440/2307-2091-2021-1-65-73.

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Relevance and purpose of the work. Surface sources of clean water are increasingly depleted. In this regard, the role of underground sources of drinking and domestic water supply is increasing. Geophysical exploration methods can be an e ective tool for fnding groundwater. The tasks of the research included determining the possibilities of magnetic prospecting in the areal search for promising zones, and identifying the features of electromagnetic fields during audiomagnetotelluric and magnetovariational soundings in the area of an operating water well. Methodology. The magnetic field was surveyed with an MMP-203 proton magnetometer (Geologorazvedka plant, Leningrad). Electrical exploration included vertical electrical sounding (VES) with ERA equipment (GNPP Geologorazvedka, St. Petersburg) and recording of audio magnetotelluric fields with OMAR-2 equipment (IGF UB RAS, Ekaterinburg). Results. The result of the magnetic survey was a map of the anomalous magnetic field of the study area, where the water-abundant groundwater zone of the weathering crust can be distinguished by structural features. The zones of tectonic faults, promising for the presence of fractured-vein waters, are confedently distinguished by positive linear anomalies of the magnetic field. The characteristic features of electromagnetic fields during audiomagnetotelluric and magnetovariational soundings in the area of distribution of fractured waters have been clarified. The most revealing behavior is the behavior of the real and imaginary quadratures of the magnetovariational tipper, characterized by minimum values and zero crossing, respectively. According to the results of electromagnetic sounding, an increase in the thickness of the weathering crust with a decrease in resistance is recorded in the area of the water intake well, which is evidence of its water cut. Conclusions. The significance of magnetic prospecting for clarifying the structural and geological structure of the territory when searching for water-saturated zones has been determined. The high e£ciency of electromagnetic soundings on direct and alternating current was confirmed to determine the nature, depth and power of the identiŽed structures. Traditionally studied, in the search and exploration of groundwater, geophysical felds are replenished with new electromagnetic parameters. These include the module and quadratures of the audio range magnetovariational tipper. The research results indicate that these parameters are anomalous in relation to aquifers, which allows us to give reasonable recommendations on the location of drilling production wells.
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RAO, M. B. Ramachandra. "Geophysical prospecting methods." MAUSAM 1, no. 2 (February 9, 2022): 93–104. http://dx.doi.org/10.54302/mausam.v1i2.4467.

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Zhao, Chuanting, Jiantao Ran, Lijun Xue, Kaifei Wang, and Yangang Cui. "Application of Geophysical Technology in Engineering Investigation." E3S Web of Conferences 338 (2022): 01003. http://dx.doi.org/10.1051/e3sconf/202233801003.

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With the development of science and technology and the progress of society, various high and new technologies have increasingly shown their respective advantages. Among them, geophysical prospecting technology is a typical representative. Because it can greatly improve the speed and efficiency of engineering, and at the same time, it also plays an important role in engineering safety and prevention. Therefore, it is widely promoted and applied, especially in engineering survey work. This article studies the importance of geophysical prospecting in engineering exploration, the methods of geophysical prospecting technology, the application of geophysical prospecting technology, and the development trend of geophysical prospecting technology. How to better understand the application of geophysical prospecting technology and rationally choose working methods and methods, so as to serve the geological exploration work to the utmost extent, is an important topic that needs to be solved and studied urgently.
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Song, Mingchun, Guoqiang Xue, Hongbo Liu, Yixin Li, Chunyan He, Hongjun Wang, Bin Wang, Yingxin Song, and Shiyong Li. "A Geological-Geophysical Prospecting Model for Deep-Seated Gold Deposits in the Jiaodong Peninsula, China." Minerals 11, no. 12 (December 9, 2021): 1393. http://dx.doi.org/10.3390/min11121393.

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The North China Craton is one of China’s major gold-producing areas. Breakthroughs have been continually made in deep prospecting at depths of 500–2000 m in the Jiaodong Peninsula, and geophysical methods have played an important role. Given that the geophysical signals of deep-seated gold deposits are difficult to detect, due to their thick overburden layers, conventional geophysical methods are not suitable for deep prospecting. Therefore, this study upgrades the geological-geophysical prospecting model, which is based on the deep metallogenic model and geophysical method of large exploration depths. Based on the analysis of the metallogenic geological factors of the altered-rock-type gold deposits in the fracture zones of the Jiaodong Peninsula, this study proposes that the gold deposits are controlled by large-scale faults, generally occur near the contact interfaces between the Early Precambrian metamorphic rock series and Mesozoic granitoids, and exhibit a stepped metallogenic model. This model then becomes the prerequisite and basic condition for deep prospecting by geophysical methods. For this reason, the traditional geophysical model, which focuses on the exploration of shallow mineralization anomalies, is transformed into a comprehensive multi-parameter geological-geophysical qualitative prospecting model highlighting the exploration of ore-controlling structural planes. The model adopts various frequency domain methods (e.g., CSAMT, AMT, WFEM), reflection seismology, and other methods to detect the deep geological structure. The characteristics of parameters such as gravity and magnetism, resistivity, polarizability, and the seismic reflection spectrum are applied to identify the ore-controlling fault location and dip angle change, and to estimate the ore-bearing location according to the stepped metallogenic model. The prospecting demonstration of deep-seated gold deposits in the Shuiwangzhuang mining area indicates the effectiveness of the comprehensive model. The comprehensive deep prospecting model effectively solves the problem of deep prospecting of gold deposits controlled by faults, promotes the great breakthrough of deep prospecting in the Jiaodong Peninsula, and provides an important technology demonstration for deep prospecting throughout China.
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Yue, Lei. "Application of Geophysical Technique in the Coal Mining." International Journal of Online Engineering (iJOE) 11, no. 7 (August 31, 2015): 11. http://dx.doi.org/10.3991/ijoe.v11i7.4759.

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Although coal is one of the most prevalent energy resources in the world, coal production has been a high risk industry due to its frequent accidents, especially in the developing nations. As well known, the main reason for that problem is that the potential disaster sources are not prospected before coal mining. Hence, it is very necessary to be advanced prospecting before the coal mining. Usually, the work of advanced prospecting can be done by the geophysical methods. According to the difference of disasters source physical characters, different geophysical methods can be employed. Because of different geophysical methods owning their advantages and disadvantages, this paper provides a general introduction to the most important methods used in the coal mining. These methods represent a primary tool for advanced prospecting to the disaster source. Although their main application is in prospecting disaster source in the coal mining, the methods are also used in other fields, for example, railway tunnel, environmental engineering and city construction. Consequently, geophysical method is of importance not only to geophysicists but also to geologists, engineers and archaeologists. The paper only covers the basic physical principles, methodology, and application fields of the various survey methods
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Gan, Jie, Hui Li, Zhengwei He, Yu Gan, Junqing Mu, Huan Liu, and Lin Wang. "Application and Significance of Geological, Geochemical, and Geophysical Methods in the Nanpo Gold Field in Laos." Minerals 12, no. 1 (January 14, 2022): 96. http://dx.doi.org/10.3390/min12010096.

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As the main part of the Indosinian metallogenic province in the eastern part of the Tethys metallogenic domain, Southeast Asia has experienced multiple stages of tectonic magnetic activities accompanied by the formation of rich mineral resources. However, due to the undeveloped economy, low degree of geological work, dense vegetation cover, and lack of obvious prospecting marks, traditional geological prospecting work in the area is not optimal. Consequently, the combination of high-precision geophysics and geochemistry has become an important method of looking for ore bodies deep underground in this area. The Nanpo gold deposit is a hydrothermal gold deposit that occurs in the Indosinian felsic volcanic rock body, and its mineralization is closely related to felsic magmatism. This study carried out comprehensive geophysical and geochemical exploration methods of soil geochemical survey, induced polarization (IP) survey, and audio-frequency magnetotelluric (AMT) survey. Based on the characteristics of geophysical and geochemical anomalies, geological inference, and interpretation, the integrated geophysical and geochemical prospecting criteria of the ore area have been determined: The large-scale and overlapping Au-Ag-Cu anomaly area in the host felsic magmatic rocks (mainly diorite, monzodiorite and granodiorite) is a favorable metallogenic area. Two anomalies, P1–H1 and P3–H6, with the best metallogenetic conditions and the deepest extensions of the known ore bodies, were further selected as engineering verification targets. After the study of the drill core, gold (mineralized) bodies consistent with the anomalies were found, indicating that the combined method is suitable for the exploration of mineral resources in this area, and the prospecting effect is good. At the same time, the metallogenic prediction shows that the deep part of the mining area still has great metallogenic prospects and prospecting potential. The characteristics of geophysical and geochemical anomalies and prospecting experience in the study area can provide references for the prospecting of hydrothermal gold deposits in the Luang Prabang–Loei structural belt.
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Fenta, Mulugeta C., David K. Potter, and János Szanyi. "Fibre Optic Methods of Prospecting: A Comprehensive and Modern Branch of Geophysics." Surveys in Geophysics 42, no. 3 (March 9, 2021): 551–84. http://dx.doi.org/10.1007/s10712-021-09634-8.

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AbstractOver the past decades, the development of fibre optic cables, which pass light waves carrying data guided by total internal reflection, has led to advances in high-speed and long-distance communication, large data transmission, optical imaging, and sensing applications. Thus far, fibre optic sensors (FOSs) have primarily been employed in engineering, biomedicine, and basic sciences, with few reports of their usage in geophysics as point and distributed sensors. This work aimed at reviewing the studies on the use of FOSs in geophysical applications with their fundamental principles and technological improvements. FOSs based on Rayleigh, Brillouin, and Raman scatterings and fibre Bragg grating sensors are reviewed based on their sensing performance comprising sensing range, spatial resolution, and measurement parameters. The recent progress in applying distributed FOSs to detect acoustic, temperature, pressure, and strain changes, as either single or multiple parameters simultaneously on surface and borehole survey environments with their cable deployment techniques, has been systematically reviewed. Despite the development of fibre optic sensor technology and corresponding experimental reports of applications in geophysics, there have not been attempts to summarise and synthesise fibre optic methods for prospecting as a comprehensive and modern branch of geophysics. Therefore, this paper outlines the fibre optic prospecting methods, with an emphasis on their advantages, as a guide for the geophysical community. The potential of the new outlined fibre optic prospecting methods to revolutionise conventional geophysical approaches is discussed. Finally, the future challenges and limitations of the new prospecting methods for geophysical applications are elucidated.
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Kasyanova, N. A. "Ways to improve the reliability of interpreting the results of geophysical surveys performed for the local forecast and prospecting for solid minerals: a geodynamic approach." Proceedings of higher educational establishments. Geology and Exploration 63, no. 4 (October 12, 2021): 73–79. http://dx.doi.org/10.32454/0016-7762-2020-63-4-73-79.

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Background. The geodynamic approach is effectively used in regional forecasting and prospecting works. However, its application for local forecasting and prospecting for solid minerals is limited and sometimes impossible. One of the key problems of local forecasting and prospecting for minerals (solid, liquid, gaseous) is the presence of non-standard (flickering) geophysical anomalies, which complicates the interpretation of the results of geophysical surveys performed at different times at different stages of geological exploration. The article is devoted to clarifying the possibility of using geodynamic research in local forecasting and prospecting for solid minerals on the basis of attracting the latest scientific knowledge from the field of studying the spatio-temporal patterns of the development of modern geodynamic processes and their influence on the Earth’s geophysical fields. Aim. To increase the reliability of interpreting the results of geophysical surveys performed for local forecasting and prospecting for solid minerals.Materials and methods. The research was carried out on the basis of a comprehensive analysis of literature data, fund materials and the results of many years of the author’s own research in the fields of modern geodynamics and prospecting and exploration geodynamics. The initial data were based on the monitoring data of various Earth’s geophysical fields (deformation, seismic, and surface magnetic).Results. A geodynamic reason for the appearance of flickering anomalies in the Earth’s geophysical fields (in particular, magnetic) has been established, and a mechanism for their formation under the influence of modern geodynamic processes has been proposed. The possibility of using the geodynamic approach in the prospecting for solid minerals has been expanded, and ways to increasing the efficiency of local searches have been proposed.Conclusions. The research demonstrates the possibility of using geodynamic studies in local prospecting for solid minerals, which helps to increase the reliability of the results of interpretation of geophysical survey data, and, as a result, to reduce the overall financial and time costs involved with searching for mineral deposits.
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Kulikov, V. A., A. G. Yakovlev, and V. A. Polikarpova. "SOME PROBLEMS OF ELECTRICAL GEOPHYSICAL PROSPECTING METHODS USED FOR EXPLORATION OF ORE DEPOSITS." Geodynamics & Tectonophysics 12, no. 3S (October 19, 2021): 731–47. http://dx.doi.org/10.5800/gt-2021-12-3s-0550.

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Electrical geophysical prospecting methods are widely used at different stages of geological exploration. In the last two decades, new computer technologies and satellite navigation systems were successfully introduced in the geophysical industry. As a result, exploration technologies have improved, and new geophysical methods have been developed, such as electrical resistivity tomography (ERT) and spectral induced polarization (SIP) methods. An important role in ore geophysics is played by magnetotelluric (MT) methods. In this article, we focus on the issues of methodology and interpretation of electrical prospecting data for solving ore exploration problems. Special attention is paid to the induced polarization (IP) method that is most widely used in mineral exploration and mining industry as one of the most important and most dynamically developing techniques of ore geophysics. In addition, the issues of correct choices of survey scales and the use of automatic 2D and 3D inversion programs are considered.
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Kharisov, Timur F., Vitalii V. Melnik, and Aleksei L. Zamiatin. "Geophysical researches in mine." Izvestiya vysshikh uchebnykh zavedenii Gornyi zhurnal 7, no. 7 (November 11, 2020): 49–55. http://dx.doi.org/10.21440/0536-1028-2020-7-49-55.

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Introduction. Geophysical methods of rock mass research are among the most effective ways of solving various mining problems being widely used in mining, gas and oil industry, as well as in science. They allow to conduct prospecting and prospect evaluation remotely, to reveal structural heterogeneity, cavities, zones of contacts of various environments in the rock mass with rather high precision. The article contains an example of solution to the problem of finding a fallen and spread through three-tier shelf in an operated shaft. Research methodology. Spectral seismic profile (SSP) method and GPR were used for prospecting. SSP is based on the dependence between the spectral composition of the oscillatory process occurring when rock mass exposed surface undergoes impact effect, and the structure of the rock mass. GPR method is based on the reflection of the electromagnetic wave from boundaries between media with different electrophysical properties. Research results. Geophysical methods have made it possible to identify the following boundaries of the metal shelf filled with rock mass inside the vertical shaft: 5.5–6.0 m, 10.5–11.0 m, 15 m. Combined results of the two measurement methods and their comparative analysis show rather high convergence therefore confirming the reliability of the obtained results. Exploration drilling of downholes from the level working confirmed the obtained results.
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Dissertations / Theses on the topic "Prospecting Geophysical methods Oman"

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Persson, Kjell. "Integrated geophysical-geochemical methods for archaeological prospecting." Doctoral thesis, Stockholm, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-279.

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Hawke, Philip James. "The geophysical signatures and exploration potential of Australia's meteorite impact structures." University of Western Australia. School of Earth and Geographical Sciences, 2004. http://theses.library.uwa.edu.au/adt-WU2005.0053.

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[Truncated abstract. Please see the pdf version of the abstract for the complete text.] Thirty impact structures of confirmed or possible status are currently identified in Australia. Twenty-two of these structures are confirmed by the presence of meteorite fragments or shock metamorphic features that are diagnostic of meteorite impact. The remainder have an impact origin supported by strong secondary evidence. New impact structures are being discovered in Australia at a rate of about one every year, with geophysics a key tool in the identification of candidate structures for further investigation. It is estimated that between two and five times the current number of impact structures are yet to be discovered on the Australian continent. Past compilations of the geophysical signatures of impact structures, particularly of their potential field responses, have been focused on structures formed in mainly crystalline targets. From these studies the expected gravity response is an overall low due to fracturing of the target rocks, with a local gravity high common over the centre of large complex structures, due to the structural uplift of denser material. An overall demagnetisation of the target rocks by the high shock pressures generated by the impact is also expected, although central magnetic highs may also be produced by remanently magnetised melt or the uplift of magnetic rocks from depth. The geophysical signatures of fifteen Australian impact structures are discussed, including individual case studies on nine structures and a detailed study of the Yallalie structure. Only one of the structures discussed here was formed in crystalline rocks, with a further two in mixed sedimentary / crystalline targets. The other structures that were studied were formed in either Phanerozoic basins or mildly-deformed Proterozoic sedimentary rocks. The potential field responses of these structures show a greater variability than was expected, particularly between structures that were formed in different types of target rock. A positive gravity response is found over four structures formed in clastic sedimentary rocks deposited in a Phanerozoic basin. These anomalies are due to the emplacement of denser rock into the central uplift. A decrease in density due to brecciation is not apparent in this target rock type. Furthermore, it is suggested that by collapsing pore space and removing water, the density of wet sedimentary rocks may be locally increased by impact. Circular magnetic anomalies are found outside the central uplift of six impact structures formed in either Phanerozoic or weakly-metamorphosed Proterozoic sedimentary basins.Four possible sources for these anomalies are proposed; remanently magnetised melt or suevite surrounding the central uplift, creation of new magnetic minerals along internal faults within the crater by post-impact hydrothermal fluids, deformation of a flat-lying magnetic layer within the target stratigraphy, and magnetic (maghemite, heavy minerals) minerals concentrated within the post-impact crater fill. It is not possible to definitively identify an impact crater from geophysical evidence alone. Consequently, candidate structures selected from geophysical data, even those as strongly supported as Silverpit, should not be given equal status to structures that have been proven beyond doubt by diagnostic geological criteria. However, it is proposed that structures that possess several pieces of secondary evidence, such as circular shape, interpretation of characteristic geophysical features and crater morphometry, be reclassified as “provisional” impact structures and be given a status that is between “possible” and “probable”. A global compilation of the natural resources known to be associated with impact structures has been undertaken. Where possible, an economic value is calculated for the total definable resource for each structure. The prospectivity of impact structures for petroleum, mineral or water resources is reconfirmed by this work. Almost 20% of all known terrestrial impact structures are associated with some form of resource that is, or has been, exploited. The most numerous, and generally most valuable, of these resources are hydrocarbon accumulations stored in structural traps or brecciated rocks within, or around, the structure. The structural displacements resulting from crater formation can expose from beneath cover, or preserve from erosion, a pre-existing, or progenetic, mineral deposit. While the massive base-metal deposits of the Sudbury Mining Camp are perhaps the most famous of all impact-related economic resources, they require the preservation of the melt sheet formed by a very large (>150 km diameter) impact structure. The Sudbury mineralisation is probably unique on the Earth, but may be a valid target for metal exploration on other planets. Other types of natural resource include surface or ground water, deposits of chemical or organic-rich sedimentary material, hydrothermal ores and industrial diamonds.
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Tsang, Wing-shing, and 曾永成. "Borehole geophysics limitations of natural gamma and gamma-gamma density logging methods." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2003. http://hub.hku.hk/bib/B42577238.

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Theodoridis, John Apostolis 1972. "Borehole electromagnetic prospecting for weak conductors." Monash University, School of Geosciences, 2004. http://arrow.monash.edu.au/hdl/1959.1/5225.

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Tsang, Wing-shing. "Borehole geophysics limitations of natural gamma and gamma-gamma density logging methods." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B42577238.

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Ahmad, Khalid. "Investigating the source of thermal anomalies in the northern United Arab Emirates (UAE) desert using geophysical methods." Diss., Rolla, Mo. : Missouri University of Science and Technology, 2010. http://scholarsmine.mst.edu/thesis/pdf/Ahmad_09007dcc807ad423.pdf.

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Thesis (Ph. D.)--Missouri University of Science and Technology, 2010.
Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed June 30, 2010) Includes bibliographical references (p. 129-135).
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Stevenson, Frederick. "Response of the Black Mountain, South Africa, sulfide deposit to various geophysical techniques and implications for exploration of similar deposits." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/558021.

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Rosa, Henrique. "Estudo de caracterização de eletrofacies por meio de perfis geofisicos de poços e de amostras de testemunhos utilizando estatistica multivariada." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/265408.

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Orientadores: Saul Barisnik Suslick, Alexandre Campane Vidal
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica e Instituto de Geociencias
Made available in DSpace on 2018-08-12T08:19:21Z (GMT). No. of bitstreams: 1 Rosa_Henrique_D.pdf: 5323611 bytes, checksum: 9779cc866a624b65a3932fa6ade79e78 (MD5) Previous issue date: 2006
Resumo: Este estudo se foca na elaboração de um método de caracterização de eletrofácies, o qual utiliza dados de perfis geofísicos de poços referentes às classes litológicas identificadas nos testemunhos desses poços, por meio do emprego de análises qualitativas associadas a tratamentos estatísticos multivariados. A princípio, o estudo visa estabelecer uma rotina de análises qualitativas para os dados litológicos extraídos dos testemunhos e associados aos perfis, por meio de ferramentas estatísticas básicas, com o objetivo de identificar agrupamentos de classes litológicas e caracterizar as eletrofácies presentes no intervalo testemunhado. Numa segunda etapa, aplica-se a técnica estatística multivariada da Análise de Agrupamentos em dois passos, a qual gera agrupamentos (eletrofácies) por meio da associação dos dados dos perfis com as classes litológicas descritas nos testemunhos. Numa terceira etapa, esses agrupamentos são avaliados quantitativamente por intermédio de ferramentas estatísticas, as quais incluem a Análise de Variância Simples (one way Anova), o Teste de Médias e a Análise Discriminante. Como exemplo de aplicação, utiliza-se um conjunto de dados que inclui perfis e descrições de testemunhos de três poços verticais do Campo Escola de Namorado, localizado na Bacia de Campos, no Estado do Rio de Janeiro. Os resultados obtidos mostram um bom desempenho da Análise de Agrupamentos em dois passos para a caracterização de eletrofácies, e permitem que se obtenham informações acerca da qualidade da amostragem, no que se refere aos ajustes das mesmas com as profundidades de perfis, além de proporcionar agilidade ao processo de investigação exploratória de dados de perfis em relação às classes litológicas a estes associadas.
Abstract: This study is focused on the elaboration of a method for electrofacies characterization which uses well log data related to the lithological classes identified in the core samples of the wells, based upon qualitative approach and multivariate statistics analysis. The first step of this method involves the establishment of a qualitative approach routine which includes the analysis of a package of well log data, which are extracted from the cored intervals, using basic statistics tools (histograms and cross plots) and aiming to delineate and characterize electrofacies. The second step involves the utilization of a classical multivariate technique called Two Steps Cluster Analysis, which generates clusters (electrofacies) based upon the association between well log data and the lithological classes identified from the core samples. The details of the Cluster Analysis technique are showed during the development of this study. During the third step of proposed method, all the clusters generated in the previous steps are quantitatively evaluated by ordinary statistical tools, which include one-way Anova, Test of Means and Discriminant Analysis. As an example of application of this method it is used a complete package of data which includes well logs and macroscope reports of three sets of core samples, extracted from three vertical wells, located in the producing Oil Field of Namorado, in the Campos Basin, Rio de Janeiro State, Brazil. The results of the statistical tests show a good performance for the Two Steps Cluster Analysis tool in characterizing electrofacies. Furthermore, all the statistical tests applied in this study allow the researcher to obtain information about the quality of the sampling process and the accuracy related to the correlation between the sampling and the logging depth, speeding-up the process of the exploratory investigation by using well log data and associated to the lithological classes present in the cored intervals of the oil wells.
Doutorado
Reservatórios e Gestão
Doutor em Ciências e Engenharia de Petróleo
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Ledwaba, Lebogang John. "An overview of energy minerals in the Springbok Flatsbasin, South Africa : implications for geochemical and geophysical exploration." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1019880.

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This study is informed by the rising demand for power needs in South Africa and aims at understanding the geophysical and geochemical characteristics of the energy minerals in the Springbok Flats Basin and relating them to the prevailing geological and structural setting for improved exploration targeting. The Springbok Flats Basin is part of the Karoo sediments and host to uranium, coal and coal bed methane (CBM) resources. The lithology sections in the basin indicate presence of basaltic lavas at the top, underlain by mudrocks, siltstones, sandstones, conglomerates and diamictite, with interbedded coal beds occasionally. The coals are uraniferous and shale bounded and of lower Beaufort age at 250 Ma. The regional radiometric data identifies the regional extent of the Springbok Flats Basin as a basin with low total count values. This information is useful in exploration as it gives an idea of the limits of the area where to focus application for prospecting licenses. The reduced to pole of the total magnetic field, residuals and first vertical derivative maps clearly show the high magnetic susceptibility nature of the surrounding Bushveld rocks as compared to the low Karoo sediment susceptibility within the basin. There are distinct ring shaped picks within the basin possibly due to known Karoo dolerite sills in particular to the central south western part of the grid. The regional geochemical mapping program is a cost-effective way of providing an overview of the relative abundance levels, regional trends and anomalous patterns in the underlying lithological units. Background values of elements in soils over different lithological units and the identification of anomalous values relative to these elements can easily be identified. The geochemical results show an excellent correlation between soil chemistry and underlying geological formations. A few distinct gravity highs are clearly shown within the basin. Assuming the effect of the Letaba basalt to the gravity readings is uniform across the basin; these distinct anomalies could be due to Karoo dolerite sills as they coincide with areas of distinct high magnetic signature. A conceptual model was generated assuming that the Karoo sediments’ layering is uniform across the gravity profile but changes in the residual are due to an increased thickness of the sill supported by the gentle changes on the surface topography. Satellite imagery has got its challenges especially in areas of vegetation but it does provide a very useful tool in exploration. A number of spectral analysis techniques and band rations can be used to differentiate the areas underlain by the Letaba basalts, the Karoo sandstones/shale and Bushveld granites for mapping purposes. The priority focus will be on the shallower Karoo sediments because of the potential for cheaper mining. Exploration targeting needs to be guided by observed geochemical and geophysical characteristics in order to prioritize areas taking into account the presence of Karoo intrusives such as the dolerite sills that tend to devolatize the coal hence affecting the quality/rank. Structures and gravity signatures are very important in delineating areas with thick sediments that have a potential for CBM. The same understanding in targeting goes a long way in planning drill holes, resource modelling and pre-feasibility stages for mine planning. A high resolution airborne geophysical survey is recommended over the basin to better resolve structures. Geophysical borehole logging is recommended to be part of the exploration drilling programs in the Springbok Flats Basin in order to define the in-situ geophysical characteristics. Geophysical logging is useful in particular for the uranium reserves that cannot be delineated from the surface due to deep intersection.
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Mori, Roberta Tomi 1988. "Integração de dados sísmicos 3D e de perfis geofísicos de poços para a predição da porosidade de um reservatório carbonático da Bacia de Campos." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287783.

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Orientador: Emilson Pereira Leite
Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Geociências
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Resumo: Uma boa caracterização geológica dos reservatórios é de grande importância para a diminuição dos riscos da perfuração de um poço seco, assim como os custos de exploração e desenvolvimento de tal reservatório. No presente trabalho, buscou-se predizer os valores de porosidade de um reservatório através da integração de dados sísmicos 3D com perfis geofísicos de poços através de dois métodos: Regressão Linear Multiatributo e Redes Neurais Artificiais. O reservatório em questão é de constituição carbonática de origem Albiana, do final do Cretáceo Inferior. Na primeira etapa, foram traçados horizontes baseando-se em eventos sísmicos contínuos nas seções sísmicas, chamados superfícies cronoestratigráficas, no intervalo de profundidade que abrange o reservatório. Na segunda etapa, foram obtidos predições dos valores de porosidade do reservatório, assim como os respectivos modelos 3D, através dos dois métodos acima citados. Com a RLM, foram obtidos valores altos, baixos e intermediários de porosidade, variando desde 5% até 40%. Já com a RNA, tais valores variaram de 5% a 30%. Em ambos os métodos, os valores de porosidade apresentaram um crescimento da porção sudoeste em direção à porção nordeste, apresentando baixos valores nas profundidades referentes aos horizontes traçados. Picos com os valores máximos de porosidade foram observados em pontos dispersos por todo o volume 3D. Comparando-se os resultados obtidos pelos dois métodos, ficou evidente a maior eficácia da RNA, a qual apresentou correlação de 0,90 entre os valores reais e os valores preditos e erro de 2,86%, enquanto que os resultados obtidos através da RLM apresentou correlação de 0,55 e erro de 5,45%. Além disso, foi feita uma comparação com os aspectos geológicos do reservatório, na qual concluiu-se que as baixas porosidades da porção sudoeste se deve à presença de microporosidade e as altas porosidades da porção nordeste, à macroporosidade original das rochas. Concluiu-se também que as baixas porosidades encontradas nas regiões dos horizontes sísmicos estão relacionadas às diferentes texturas de rochas, já que as rochas presentes nessas regiões possuem maiores quantidades de matriz carbonática (packstones e wackestones) quando comparadas com as rochas das regiões entre os horizontes (grainstones)
Abstract: A good geological reservoirs characterization is very important for reducing the risk of drilling a dry hole as well as the costs for reservoir exploration and development. In this study, it was attempted to predict the porosity values of a reservoir through the integrations of 3D seismic data with geophysical well logs using two different methods: Multiattribute Linear Regression and Artificial Neural Networks. The studied reservoir has a carbonate composite, with the age of Albian, in late Early Cretaceous. On the first stage of the study, horizons have been traced based on continuous seismic events on seismic sections, in depths that cover the reservoir. On the second stage, it was obtained some predictions of reservoir porosity values, as well as their 3D models by the two methods that was already mentioned. High, low and intermediate porosity values have been obtained by the MLR, ranging from 5% to 40%. With the ANN, these values ranged from 5% to 30%. In both methods, the porosity values grew from south-west portion toward the northeast portion, with low values on the depths related to the horizons traced. We can observe maximum value peaks of porosity at points scattered throughout the 3D volume. A comparison of the results obtained by the two methods evidence the greater efficiency of the ANN, with a correlation of 0,90, between actual porosity and predicted values, and 2.86% of error, while the results obtained by the MLR showed a correlation of 0,55 and an error of 5.45%. Furthermore, we have made a comparison between the results obtained and the reservoir geological features, which allows us to conclude that the low porosity in the south-west portion is because of microporosity, while the high porosity in the northeast is because of the original macroporosity of the rocks. We also conclude that low porosity found on horizon surfaces are related to different rock textures, once the rocks on these horizon regions have more carbonatic matrix in their constitution (packstones and wackestones) than the rocks in the other regions between the horizons (grainstones)
Mestrado
Geologia e Recursos Naturais
Mestra em Geociências
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Books on the topic "Prospecting Geophysical methods Oman"

1

Geophysical methods. Englewood Cliffs, N.J: Prentice Hall, 1989.

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Dobrin, Milton B. Introduction to geophysical prospecting. 4th ed. New York: McGraw-Hill, 1988.

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H, Savit Carl, ed. Introduction to geophysical prospecting. 4th ed. New York: McGraw-Hill Book Co., 1988.

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Nath, Sankar Kumar. Geophysical prospecting for groundwater. Rotterdam: Balkema, 2000.

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Cahit, Çoruh, ed. Basic exploration geophysics. New York: Wiley, 1988.

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M, Brooks, and Hill Ian, eds. An introduction to geophysical exploration. 3rd ed. Malden, MA: Blackwell Science, 2002.

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Geophysical methods in geology. 2nd ed. New York: Elsevier, 1986.

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Asger, Eriksen, ed. Field geophysics. 4th ed. Hoboken, NJ: Wiley, 2011.

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Zhdanov, Mikhail Semenovich. The geoelectrical methods in geophysical exploration. Amsterdam: Elsevier, 1994.

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Milsom, John. Field geophysics. Milton Keynes: Open University Press, 1989.

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Book chapters on the topic "Prospecting Geophysical methods Oman"

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Farfour, Mohammed, and Talal Al-Hosni. "Application of Seismic Refraction Tomography to Map Bedrock: A Case Study from Al-Amrat, Oman." In On Significant Applications of Geophysical Methods, 103–6. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-01656-2_23.

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Ebraheem, Abdel Azim, Mohsen Sherif, Mohamed Al Mulla, Khaled Alghafli, and Ahmed Sefelnasr. "Assessment of Groundwater Resources in Water Spring Areas Using Geophysical Methods, Northern UAE." In Natural Disaster Science and Mitigation Engineering: DPRI reports, 493–508. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2904-4_20.

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AbstractThe Khatt, Madab, and Al Ghmour Springs are important springs in UAE. They are located in the foothills of the Oman Mountains. The water temperature of these springs is relatively high (approximately 39 °C). Overexploitation of fractured aquifers negatively affected the waterflows from these springs. The outflows from these springs are time-dependent and range from 10 to 50 L/s (until 1998) to 1–10 L/s (until 2010). To assess the current conditions of the spring areas, relevant data were carefully reviewed, analyzed, and stored in a GIS database. A 3D-geological model was developed for the Khatt Springs area, which allowed different types of visualizations, calculations, and predictions. In addition, a 2D earth resistivity imaging survey was performed to evaluate the available groundwater resources, characterize the major faults/fractures feeding these springs, and to determine the locations of saturated fractures and karsts and the thicknesses of the unconsolidated materials in the wadis. Borehole and drilling information from observation wells were utilized to enhance the analysis of the earth resistivity imaging data. The described procedures and acquired results indicated that it was possible to determine the locations of two production wells for feeding Al Ghmour Springs with water during drought periods to keep it alive.
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Ward, Stanley H. "16. Electrical Methods in Geophysical Prospecting." In Geophysics - Field Measurements, 265–375. Elsevier, 1987. http://dx.doi.org/10.1016/s0076-695x(08)60601-8.

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"Geophysical prospecting in Pliska (Bulgaria): applied methods and results." In Byzantium, Pliska, and the Balkans, 341–50. De Gruyter, 2007. http://dx.doi.org/10.1515/9783110218831.2.341.

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"Geophysical methods of prospecting for and exploration of metallic, non-metallic and coal deposits." In Prospecting and Exploration of Mineral Deposits, 187–233. Elsevier, 1986. http://dx.doi.org/10.1016/b978-0-444-99515-5.50014-4.

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Abiodun, Emmanuel. "Integrated Geochemical and Geophysical Approach to Mineral Prospecting – A Case Study on the Basement Complex of Ilesa Area, Nigeria." In Advances in Data, Methods, Models and Their Applications in Geoscience. InTech, 2011. http://dx.doi.org/10.5772/26619.

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Herz, Norman, and Ervan G. Garrison. "Geomorphology in Archaeology." In Geological Methods for Archaeology. Oxford University Press, 1998. http://dx.doi.org/10.1093/oso/9780195090246.003.0005.

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Geomorphology is the study of the evolution of landforms. Analysis of surficial deposits provides much of the evidence for changes in landforms over time. These deposits may be residual materials, formed in place by weathering of underlying formations, or may have been formed elsewhere and then transported by wind, water, or humans to their present site of deposition. They include both sediments and soils, which are commonly confused in the field although each originates by different processes and each yields different kinds of information. Both geomorphology and surficial deposits are the principal subjects of several other publications and will not be covered in great detail here. This book aims to cover in more detail fields that are universally acknowledged to be important for archaeology but are generally ignored in the "geoarchaeology" literature. Those seeking more information on geomorphology and surficial deposits should refer to other publications. The kind and amount of surficial materials change with the changing land surface and climatic conditions and so offer the best evidence regarding the evolution of the landscape. An understanding of these changes on a site will allow a re-creation of the paleoenvironment at the time of occupation and a modeling of the prehistoric land-use patterns. Archaeological exploration in an area is facilitated by first pinpointing desirable habitation sites of the time and then targeting these sites for geophysical prospecting. After a site has been discovered, geophysical and geomorphic-sedimentologic information can help develop excavation strategies. Such information commonly allows a better idea of the distribution and nature of buried artifacts and may explain anomalous surficial redistribution of artifacts, for example, by downslope wash or sediment burial. The first study in a new area proposed for any detailed archaeological work should be geomorphic-surficial geology. It can be carried out in three distinct phases:1. Geomorphic mapping affords meaningful descriptions of the landforms, drainage patterns, surficial deposits, tectonic features, and any active geomorphological processes. 2. The erosional processes that carved the landforms—including soil formation, sediment removal or deposition, and tectonic uplift—are documented.
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Conference papers on the topic "Prospecting Geophysical methods Oman"

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Nikolaev, Alexei V. "Nontraditional methods of geophysical prospecting: Ideas and experimental results." In SEG Technical Program Expanded Abstracts 1990. Society of Exploration Geophysicists, 1990. http://dx.doi.org/10.1190/1.1890388.

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Jata, I., and S. Kasapi. "Application of surface geophysical methods in groundwater prospecting in the Shkodra region." In 5th Congress of Balkan Geophysical Society. European Association of Geoscientists & Engineers, 2009. http://dx.doi.org/10.3997/2214-4609-pdb.126.6264.

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Kutrubes, Doria, and John F. Kick. "Prospecting for a Municipal Water Supply Using Multiple Geophysical Methods, Long Lake, NY." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2011. Environment and Engineering Geophysical Society, 2011. http://dx.doi.org/10.4133/1.3614055.

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Yakymchuk, M., S. P. Levashov, I. N. Korchagin, and Y. M. Pischaniy. "Mobile Geophysical Methods Application for the Operative Prospecting Conducting on the Construction Sites." In 73rd EAGE Conference and Exhibition incorporating SPE EUROPEC 2011. Netherlands: EAGE Publications BV, 2011. http://dx.doi.org/10.3997/2214-4609.20149501.

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Varentsov, I., A. Khrapov, and A. Yakovlev. "Land Geophysical Methods for Search and Prospecting of Copper-Nickel Deposits of “Norilskiy Nickel”." In GeoSiberia 2007 - International Exhibition and Scientific Congress. European Association of Geoscientists & Engineers, 2007. http://dx.doi.org/10.3997/2214-4609.201403696.

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Yakymchuk, M., Y. M. Yakymchuk, I. Korchagin, S. Levashov, M. Dravert, and Y. Pyschaniy. "Investigation of Geological-Engineering and Hydrological Conditions in the Prospecting Areas by Geophysical Methods." In 2nd EAGE St Petersburg International Conference and Exhibition on Geosciences. European Association of Geoscientists & Engineers, 2006. http://dx.doi.org/10.3997/2214-4609-pdb.20.p147.

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A. Meju, Max, and Sergio L. Fontes. "Evaluation Of Combined Tem-Csamt Methods For Gold Prospecting In The Pau-A-Pique Subarea Of The Fazenda Brasileiro Mine, Brazil." In 7th International Congress of the Brazilian Geophysical Society. European Association of Geoscientists & Engineers, 2001. http://dx.doi.org/10.3997/2214-4609-pdb.217.156.

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Raju, P. V. S., and K. S. Kumar. "Application of Geophysical Methods (Gravity and Magnetics) to Chromite Prospecting: An example from Kathpal Area, Sukinda, Orissa." In 1st Indian Near Surface Geophysics Conference & Exhibition. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201979027.

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Pérez-Cuevas, J., V. Flores-Sasso, E. Prieto-Vicioso, L. Ruiz-Valero, and S. Sandoval. "Application of Geophysical Prospecting Methods for Soil Structure Characterization of the Cathedral of Santo Domingo, Dominican Republic." In 12th International Conference on Structural Analysis of Historical Constructions. CIMNE, 2021. http://dx.doi.org/10.23967/sahc.2021.030.

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Gorunov, А., Е. Кiselev, I. Kondratiev, А. Safonov, K. Tertyshnikov, and V. Chernov. "The role of high-resolution electrical survey (HRES-IP) in complex of geophysical methods during exploration, prospecting and exploitation of oil and gas deposits." In Geophysics of the 21st Century - The Leap into the Future. European Association of Geoscientists & Engineers, 2003. http://dx.doi.org/10.3997/2214-4609-pdb.38.f188.

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