Relevant bibliographies by topics / Well logging

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Well logging'

Author: Grafiati
Published: 4 June 2021
Last updated: 16 June 2025

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Journal articles on the topic "Well logging"

1

Hurst, Andrew. "Geological well logging." Marine and Petroleum Geology 5, no. 1 (1988): 85. http://dx.doi.org/10.1016/0264-8172(88)90046-3.

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Kleinberg, Robert L. "Well logging overview." Concepts in Magnetic Resonance 13, no. 6 (2001): 342–43. http://dx.doi.org/10.1002/cmr.1019.

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Birchak, James R. "Acoustic attenuator, well logging apparatus and method of well logging." Journal of the Acoustical Society of America 100, no. 4 (1996): 1940. http://dx.doi.org/10.1121/1.417877.

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Worthington, Paul F. "Encyclopedia of well logging." Marine and Petroleum Geology 5, no. 1 (1988): 83. http://dx.doi.org/10.1016/0264-8172(88)90043-8.

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Herron, Michael M. "Mineralogy from Geochemical Well Logging." Clays and Clay Minerals 34, no. 2 (1986): 204–13. http://dx.doi.org/10.1346/ccmn.1986.0340211.

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Melcher, C. L. "Scintillators for well logging applications." Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 40-41 (April 1989): 1214–18. http://dx.doi.org/10.1016/0168-583x(89)90622-8.

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Felder, R. D. "Advances in Openhole Well Logging." Journal of Petroleum Technology 46, no. 08 (1994): 693–701. http://dx.doi.org/10.2118/27918-pa.

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Donaldson, E. C. "Well logging for earth scientists." Journal of Petroleum Science and Engineering 2, no. 4 (1989): 389. http://dx.doi.org/10.1016/0920-4105(89)90013-2.

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Kleinberg, Robert L. "NMR well logging at Schlumberger." Concepts in Magnetic Resonance 13, no. 6 (2001): 396–403. http://dx.doi.org/10.1002/cmr.1026.

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Dmitrenko, E. V., Yu I. Zakharchenko, and S. P. Shuray. "Prevention of the accidents based on risk analysis during well logging." Okhrana truda i tekhnika bezopasnosti na promyshlennykh predpriyatiyakh (Labor protection and safety procedure at the industrial enterprises), no. 3 (2021): 51–55. http://dx.doi.org/10.33920/pro-4-2103-07.

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Conduction of well logging is associated with the possibility of occurrence of various emergency situations. The most probable are the sticking of well-logging tools and logging cable rupture. Such events can trigger the development of emergencies. Therefore, ensuring safety during well logging is an actual and practically important task. The authors analyzed the risk of well logging activities using the method of event tree analysis. It has been found that the main causes of sticking are rapid descent of the logging probe and casing string displacement. The rapid descent of logging probes is associated with incorrect actions of the operator and damage to the well logging winch. The logging probe breakage (rupture) is associated with mechanical damage to the cable and poor connection of the probe to the cable. The authors propose a set of specific recommendations to reduce the risk of accidents and to improve the coherence of the work carried by drilling personnel and the well logging laboratory, to timely detect defects in the logging cable and to rapidly remove well-logging tools in the event of an accident.
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Dissertations / Theses on the topic "Well logging"

1

Hue, Yik-Kiong. "Analysis of electromagnetic well-logging tools." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1143053776.

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Lee, Hwa Ok. "Numerical Modeling of Electromagnetic Well-Logging Sensors." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274981676.

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Banchs, Rafael Enrique. "Time harmonic field electric logging /." Digital version accessible at:, 1998. http://wwwlib.umi.com/cr/utexas/main.

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Johnson, Erik D. Ph D. Massachusetts Institute of Technology. "High-energy photon transport modeling for oil-well logging." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53266.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2009.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 121-122).<br>Nuclear oil well logging tools utilizing radioisotope sources of photons are used ubiquitously in oilfields throughout the world. Because of safety and security concerns, there is renewed interest in shifting to electronically-switchable accelerator sources. Investigation of accelerator sources opens up the opportunity to study higher-energy sources. In this thesis, sources with a 10 MeV endpoint are examined, a several-fold increase over traditional techniques. The properties of high-energy photon transport are investigated for potential new or improved well logging measurements. Two obvious processes available with a high-energy photon source are pair production and photo neutron emission. A new measurement of formation density is proposed based on the annihilation radiation produced after the pair production of high-energy source photons in the rock formation. With a detector spacing of 55 cm, this measurement exhibits a sensitivity to density with a dynamic range of 10 across a typical range of formation density (2.0 - 3.0 g/cc), the same as traditional measurements. Increases in depth of investigation for these measurements can substantially improve the sampling of the formation and thus the quality and relevance of the measurement. Being distributed in angle and space throughout the formation, a measurement based on anni-hilation photons exhibits a greater depth of investigation than traditional methods. For a detector spacing of 39 cm (equivalent to a typical spacing for one detector in traditional approaches), this measurement has a depth of investigation of 8.0 cm while the traditional measurement has a depth of investigation of 3.6 cm.<br>(cont.) For the 55 cm spacing, this depth is increased to 9.4 cm. Concerns remain for how to implement an accelerator source in which energy spectroscopy, essential for identifying an annihilation peak, is possible. Because pair production also depends on formation lithology, the effects of chemical composition on annihilation photon flux are small (<20 %) for the studied geometry. Additionally, lithology measurements based on attenuation at high energies show too small an effect to be likely to produce a useful measurement. Photoneutron production cross sections at this energy are too small to obtain a measurement based on this process.<br>by Eric D. Johnson.<br>Ph.D.
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Bristow, James F. "Physical and chemical characteristics of rocks from downhole measurements." Thesis, University of Nottingham, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.336177.

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Jakaboski, Juan-Carlos. "Innovative Thermal Management of Electronics Used in Oil Well Logging." Thesis, Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/7255.

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The oil and gas industries use sophisticated logging tools during and after drilling. These logging tools employ internal electronics for sensing viscosity, pressure, temperature, and other important quantities. To protect the sensitive electronics, which typically have a maximum allowable temperature of 100 㬠they are shielded and insulated from the harsh external drilling environment. The insulation reduces the external heat input, but it also makes rejection of the heat generated within the electronics challenging. Electronic component failures promoted by elevated temperatures, and thermal stress, require a time consuming and expensive logging tool replacement process. Better thermal management of the electronics in logging tools promises to save oil and gas companies time and money. This research focuses on this critical thermal management challenge. Specifically, this thesis describes the design, fabrication, and test of an innovative thermal management system capable of cooling commercial-off-the-shelf electronics for extended periods in harsh ambient temperatures exceeding 200 㮠Resistive heaters embedded in quad-flat-packages simulate the electronics used in oil well logging. A custom high temperature oven facilitates the evaluation of a full scale prototype of the thermal management system. We anticipate the prototype device will validate computer modeling efforts on which its design was based, and advance future designs of the thermal management system.
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NOVO, MARCELA SILVA. "NUMERICAL ANALYSIS OF ELECTROMAGNETIC WELL-LOGGING TOOLS BY USING FINITE VOLUME METHODS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11478@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>SOCIETY OF EXPLORATION GEOPHYSICISTS FOUNDATION<br>SOCIETY OF PETROPHYSICISTS & WELL LOG ANALYSTS<br>O objetivo principal deste trabalho é o desenvolvimento de modelos computacionais para analisar a resposta eletromagnética de ferramentas de perfilagem LWD/MWD em formações geofísicas arbitrárias. Essa modelagem envolve a determinação precisa de campos eletromagnéticos em regiões tridimensionais (3D) complexas e, conseqüentemente, a solução de sistemas lineares não-hermitianos de larga escala. A modelagem numérica é realizada através da aplicação do método dos volumes finitos (FVM) no domínio da freqüência. Desenvolvem-se dois modelos computacionais, o primeiro válido em regiões isotrópicas e o segundo considerando a presença de anisotropias no meio. As equações de Maxwell são resolvidas através de duas formulações distintas: formulação por campos e formulação por potenciais vetor e escalar. A discretização por volumes finitos utiliza um esquema de grades entrelaçadas em coordenadas cilíndricas para evitar erros de aproximação de escada da geometria da ferramenta. Os modelos desenvolvidos incorporam quatro técnicas numéricas para aumentar a eficiência computacional e a precisão do método. As formulações por campos e por potenciais vetor e escalar são comparadas em termos da taxa de convergência e do tempo de processamento em cenários tridimensionais. Os modelos foram validados e testados em cenários tridimensionais complexos, tais como: (i) poços horizontais ou direcionais; (ii) formações não homogêneas com invasões de fluído de perfuração; (iii) formações anisotrópicas e (iv) poços excêntricos. Motivado pela flexibilidade dos modelos e pelos resultados numéricos obtidos em diferentes cenários tridimensionais, estende-se a metodologia para analisar a resposta de ferramentas LWD que empregam antenas inclinadas em relação ao eixo da ferramenta. Tais ferramentas podem prover dados com sensibilidade azimutal, assim como estimativas da anisotropia da formação, auxiliando o geodirecionamento de poços direcionais e horizontais.<br>The main objective of this work is to develop computational models to analyze electromagnetic logging-while-drilling tool response in arbitrary geophysical formations. This modeling requires the determination of electromagnetic fields in three- dimensional (3-D) complex regions and consequently, the solution of large scale non-hermitian systems. The numerical modeling is done by using Finite Volume Methods (FVM) in the frequency domain. Both isotropic and anisotropic models are developed. Maxwell's equations are solved by using both the field formulation and the coupled vector-scalar potentials formulation. The proposed FVM technique utilizes an edge-based staggered-grid scheme in cylindrical coordinates to avoid staircasing errors on the tool geometry. Four numerical techniques are incorporated in the models in order to increase the computational efficiency and the accuracy of the method. The field formulation and the coupled vector-scalar potentials formulation are compared in terms of their accuracy, convergence rate, and CPU time for three-dimensional environments. The models were validated and tested in 3-D complex environments, such as:(i) horizontal and directional boreholes; (ii) multilayered geophysical formations including mud-filtrate invasions; (iii) anisotropic formations and (iv)eccentric boreholes. The methodology is extended to analyze LWD tools that are constructed with the transmitters and/or receivers tilted with respect to the axis of the drill collar. Such tools can provide improved anisotropy measurements and azimuthal sensitivity to benefit geosteering.
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ROSA, GUILHERME SIMON DA. "PSEUDO-ANALYTICAL MODELING FOR ELECTROMAGNETIC WELL-LOGGING TOOLS IN COMPLEX GEOPHYSICAL FORMATIONS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=30559@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PROGRAMA DE DOUTORADO SANDUÍCHE NO EXTERIOR<br>Esta tese apresenta um estudo sobre técnicas de modelagem numérica utilizadas na análise da propagação eletromagnética em formações geofísicas comumente encontradas na perfuração de poços de petróleo. O emprego de sensores eletromagnéticos adjacentes à broca de perfuração permite a inferência dos parâmetros constitutivos do solo ao redor do poço. Nos últimos anos, os avanços da tecnologia de perfilagem eletromagnética permitiram a modelagem em tempo real do problema, possibilitando direcionar a perfuração do poço a fim de maximizar a exploração de petróleo, gás, e outros hidrocarbonetos fósseis. Formações geofísicas complexas são predominantes neste tipo de problema, e geralmente são modeladas usando técnicas numéricas de força bruta como os métodos de diferenças finitas, dos elementos finitos ou dos volumes finitos. No entanto, estas técnicas têm um custo computacional relativamente alto em termos de memória e tempo de processamento. O avanço da tecnologia de perfilagem em tempo real requer abordagens mais eficientes. Neste trabalho nós empregamos o método do casamento de modos combinado com uma série de características positivas dos métodos pseudoanalíticos conhecidos na literatura para obter uma técnica inédita que permite analisar poços direcionais com estratificações radiais e longitudinais em formações geofísicas anisotrópicas. A técnica proposta permite modelar problemas ainda não explorados, mas com motivação tecnológica iminente, como a propagação eletromagnética ao longo de poços curvados e a perfuração em camadas inclinadas em relação ao eixo axial do poço. Nós apresentamos uma série de resultados de validação que demonstram que a técnica introduzida neste trabalho pode modelar de forma acurada e eficiente sensores de perfilagem eletromagnética usados na exploração de petróleo e gás.<br>This research presents a study on numerical techniques to model the electromagnetic propagation in geophysical formations commonly encountered in oil well drilling. The employment of electromagnetic sensors surrounding the drill bit allows inferring the constitutive parameters of the soil around the well. In recent years, advances in electromagnetic logging technology have enabled the real-time modeling of this problem. In this way, the drilling direction can be guided in order to maximize the exploitation of oil, gas, and other fossil hydrocarbons. The complex geophysical formations that are prevalent in this type of problem can be effectively handled using brute-force numerical techniques such as finite-differences, finite-elements and finite-volumes. However, these techniques suffer from relatively high cost in terms of both computer memory and CPU time. The advancement of real-time logging technology demands approaches that are more efficient than purely numerical methods. In this work, we employ the mode-matching technique combining attractive features of the well-known pseudo-analytical approaches to obtain a new technique for analyzing directional well-logging tools in anisotropic formations with both radial and axial stratifications. The proposed technique allows to model problems not yet explored, but with a strong technological motivation, such as electromagnetic propagation along curved wells and drilling along inclined layers. We present a series of validation results showing that the novel technique introduced in this study can model accurately and efficiently electromagnetic logging sensors used in oil and gas exploration.
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Trevizan, Willian Andrighetto. "Nuclear magnetic resonance and digital rock in oil industry: well logging applications." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-10082017-113902/.

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This thesis discusses Nuclear Magnetic Resonance (NMR) techniques for formation evaluation in well log analysis for the oil/gas industry. We present the standard ingredients for NMR data processing and interpretation, and develop a methodology that extends the determination of surface relaxivity from the laboratory to the well site. The methodology consists of a processing algorithm for diffusion editing data, which enables surface relaxivity determination for conditions close to those found in well logging (regarding data availability and noise levels). At moderate noise levels, lower relaxivity values (below 10&mu;m/s) can be determined solely from NMR diffusion data, while higher values (&#8764;30&mu;m/s) can be separated from intermediate ones. Application for actual logging data still requires some noise reduction techniques such as stationary measurements downhole or data stacking among different depths. However, it provides a way of converting T2 distributions into actual pore size distributions even for downhole acquisitions, before the samples get to the laboratory for routine analysis. Besides the logging analysis, we also developed a theoretical approximation to the diffusion equation with partial absorptive contour conditions, by calculating appropriate transition rates between cells in an arbitrary grid, allowing a simple methodology for obtaining the NMR data based on pore imaging. Calculated rates can in principle be used for modeling/understanding different diffusion phenomena, such as exchange between pores or relaxation sites.<br>Neste trabalho são discutidas técnicas de Ressonância Magnética Nuclear (RMN) aplicadas à avaliação de formações por meio da perfilagem de poços pela indústria de óleo e gás. São apresentados os conceitos básicos para processamento e interpretação dos dados de RMN, e desenvolvida uma metodologia para determinação da relaxatividade superficial em poço. O método consiste em um algoritmo de processamento de dados de diffusion editing, que permite a obtenção da relaxatividade superficial em condições próximas as encontradas na perfilagem de poços de petróleo (em relação à disponibilidade de dados e nível de ruído). Para níveis moderados de ruído, as relaxatividades mais baixas (menores que 10&mu;m/s) podem ser determinadas através das medidas de difusão por RMN, enquanto valores mais altos (&#8764;30&mu;m/s) podem ser separados dos intermediários. Aplicações em dados de perfilagem ainda requerem técnicas de redução de ruído como aquisições estacionárias em poço ou empilhamento de dados ao longo de um intervalo de profundidades. Entretanto, o método possibilita uma forma de converter as distribuições de T2 em distribuições de tamanhos de poros ainda em poço, antes que as amostras sejam enviadas para o laboratório em análises de rotina. Além da perfilagem, foi desenvolvido também uma aproximação para a equação de difusão com condições de contorno absortivas, através de equações de taxas. A forma das taxas de transição permite o desenvolvimento de metodologias simples para obtenção dos dados de RMN através de imagens dos poros das rochas. As taxas de transição podem ser utilizadas também para a modelagem de outros fenômenos que envolvam difusão, como fenômenos de troca entre poros ou entre sítios com diferentes valores de relaxação.
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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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Books on the topic "Well logging"

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Gorbachev, Yury I. Well logging: Fundamentals of methods. Wiley, 1995.

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Society of Petroleum Engineers of AIME., ed. Production logging. Society of Petroleum Engineers, 1985.

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L, Campbell Frank, ed. Well logging II: Electric and acoustic logging. Henry L. Doherty Memorial Fund of AIME, Society of Petroleum Engineers, 1986.

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Society of Petroleum Engineers (U.S.), ed. Openhole well logging. Society of Petroleum Engineers, 1986.

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Tittman, Jay. Geophysical well logging. Academic Press, 1986.

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Chin, Wilson C. Electromagnetic Well Logging. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118835074.

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1940-, Baker Ron, University of Texas at Austin. Petroleum Extension Service., and Association of Oilwell Servicing Contractors., eds. Well logging methods. 2nd ed. Petroleum Extension Service, University of Texas at Austin, 1991.

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Geological Survey (U.S.), ed. Geological application of well logs: A selected bibliography of well logging literature published through June 30, 1985. U.S. Dept. of the Interior, Geological Survey, 1985.

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pétrole, Institut français du, ed. Encyclopedia of well logging. Gulf Pub. Co., 1985.

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Lorenzo, Serra, ed. Well logging and geology. Editions Serralog, 2003.

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Book chapters on the topic "Well logging"

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Luthi, Stefan M. "Paleomagnetic Logging." In Geological Well Logs. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04627-2_11.

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Kobr, Miroslav. "Geophysical Well Logging." In Encyclopedia of Solid Earth Geophysics. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-10475-7_173-1.

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Kobr, Miroslav. "Geophysical Well Logging." In Encyclopedia of Solid Earth Geophysics. Springer Netherlands, 2011. http://dx.doi.org/10.1007/978-90-481-8702-7_173.

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Kobr, Miroslav. "Geophysical Well Logging." In Encyclopedia of Solid Earth Geophysics. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58631-7_173.

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Mishra, O. P., and D. C. Naskar. "Geophysical Well Logging or Borehole Logging." In Geophysical Methods. CRC Press, 2024. http://dx.doi.org/10.1201/9781032661902-12.

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Luthi, Stefan M. "Nuclear Spectroscopy Logging." In Geological Well Logs. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04627-2_10.

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Luthi, Stefan M. "History of Logging." In Geological Well Logs. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04627-2_2.

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Liu, Hongqi. "Electrical Logging." In Principles and Applications of Well Logging. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-53383-3_2.

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Liu, Hongqi. "Electrical Logging." In Principles and Applications of Well Logging. Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-662-54977-3_2.

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Etnyre, Lee M. "Radioactivity Logging." In Finding Oil and Gas from Well Logs. Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-5230-4_7.

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Conference papers on the topic "Well logging"

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Havira, R. Mark. "Ultrasonic Techniques in Oil Well Logging." In CORROSION 1988. NACE International, 1988. https://doi.org/10.5006/c1988-88370.

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Abstract Oil well logging is used to provide the oil and gas industry with information essential to discovering and extracting hydrocarbons. This paper addresses two ultrasonic measurements that are presently used in oil well logging. The most widely used is an ultrasonic technique that evaluates the integrity of the cement seal after a steel casing has been lowered and cemented in place. This instrument is also capable of monitoring the effects of corrosion both on the inner and outer surfaces of the casing. The measurement is based on a pulsed resonant technique. Less widely used is the Borehole Televiewer, an ultrasonic scanning device based on a pulse-echo technique. It provides an acoustic image of geologic features such as rock layers and fractures.
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Akinshin, Alexander Vadimovich, Mikhail Vladimirovich Dmitrievskiy, Yuliy Dmitrievich Kantemirov, and Kirill Dmitrievich Bobylev. "Automate Well Logging Data Interpretation with Digital Assistant." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208424-ms.

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Abstract Nowadays, digitalization and automation are a common trend for many companies of various areas including the oil and gas production industry. Processes of initial data preliminary analysis (unification, merging, depth shifting) and petrophysical preparation for calculations (lithology differentiation, averaging, measurements calculation etc.) in the framework of geophysical well logging (GWL) data interpretation take a significant amount of time. Incorporation of automation algorithms tuned for specific sediments enables to considerably reduce labour effort what increases the time needed for the analytical part of the interpretation. The developed approach is an integrated algorithm which helps to perform preliminary preparation and interpretation of GWL data in the framework of integrated adjustable process with minimum participation of the interpreter in routine operations. The features of the virtual assistant are coded in Python.
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Kazak, Ekaterina Sergeevna, and Andrey Vladimirovich Kazak. "Comprehensive Studies of Formation Water for Achimov and Bazhenov Formations — Revitalizing Archived and Old Cores." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208415-ms.

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Abstract The sediments of Bazhenov (BF) and Achimov (ACh) formations have been studied for more than 50 years, and to date, a large amount of core material obtained during drilling at the stage of exploration is stored in the core stores of Russian industrial companies. The rise in the cost of the complex of geological exploration and the emergence of new research methods enabled studies of the old/dry core from previously drilled exploration wells. BF and ACh reservoir rocks have low permeability and initially low water saturation, and therefore, during storage, rock samples could partially retain pore water. To study its composition and quantitative content, we used the previously proposed integrated approach with proven effectiveness in fresh low-permeability BF rocks. The studied materials include BF rock samples from 3 different fields stored for 2 years after sampling in the laboratory, and ACh rock samples from 12 fields, cored more than 10 years ago at the geologic exploration stage. The complex technique includes determining free and bound water contents by the evaporation method with isotopic analysis (δ18O and δD) of the released water. The modified water extraction method provides a range of pore water salinity, while the modified alcohol ammonium chloride method measures the cation exchange capacity (CEC). Auxilary methods include Rock-Eval pyrolysis to determine organic matter content, X-ray diffraction analysis (XRD) to assess the mineral composition of sediments. The verification of the results for the BF rock samples was carried out according to the data obtained for the new/fresh core, while for the ACh rock samples — according to the results of the direct chemical composition analysis of the formation water. Despite the low permeability, we found that the BF and ACh rock samples during storage lost almost all (up to 90%) free water due to evaporation. At the same time, salts from formation water remained in the pore space, which made it possible to estimate the range of its NaCl salinity: 1.84–14.7 g/L for ACh rock samples and 4.49–20.19 g/L for BF rock samples. The obtained values set the lower limit of the possible pore water salinity of the studied ACh and BF rock samples. Moreover, the results match those from direct salinity measurements in the ACh depth intervals and the results of fresh BF core laboratory studies. We showed that the old/dry BF and ACh core could be effectively used to assess the bound water content with subsequent determination of its genesis from isotopic composition data and CEC measurements. This opportunity relies on the high clay content in the studied BF and ACh rock samples. The obtained results show the fundamental capability of informative laboratory studies of BF and ACh rock samples from public and private core storage facilities and give new life to archived and old/dry core.
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Sitdikov, Vil Dayanovich, Artyom Anatolyevich Nikolaev, Ekaterina Alekseevna Kolbosenko, Grigoriy Vladimirovich Ivanov, Artyom Konstantinovich Makatrov, and Andrey Vladimirovich Malinin. "The Features of X-Ray Phase Analysis of Rocks with Complex Mineral Composition." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208448-ms.

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Abstract The article presents the results of identification and quantitative analysis of the phase composition, fine structure parameters of minerals in carbonate and terrigenous rocks by the use of modern X-ray diffraction (XRD) analysis. To make the XRD analysis, we optimized the modes of x-ray pattern shooting by changing the radius of the goniometer, the system of primary and secondary slits, Soller slits, and the system of detecting the low-content minerals. In processing the obtained x-ray patterns, we considered the size and defects of the crystal grains, the crystallographic mode of arrangements, atomic population of the crystal lattice, the Debye-Waller factor and the instrumental line broadening by the use of the Caliotti function for LaB6. So we determined the type and content of minerals, estimated the period of the crystal lattice, the size of the coherent scattering domains and micro-distortion crystal lattice of the mineral. We compared the obtained data on the presence and quantitative content of minerals with the data of X-ray fluorescence (XRF) analysis and scanning electron microscopy (SEM). Based on the obtained data, reference intensity ratio (RIR) coefficients were selected for a number of minerals typically contained in core materials for quantitative phase analysis by the use of the corundum number method.
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Mikhaylov, Sergey Petrovich, and Anastasia Andreevna Shtyrlyaeva. "Consideration of the Influence of Carbonate Cement on the Accuracy of Prediction of Well Start-Up Flow Rates in Deep Reservoirs of the West Siberian Oil and Gas Basin on the Example of Reservoir U1 Formation." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208422-ms.

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Abstract Oil reservoirs are often affected by tectonic processes throughout their lifetime. Tectonic processes contribute to the impact on the formation of a number of mechanical and chemical factors. These factors change the composition and structure of the reservoir and this affects the reservoir properties of the reservoir. Deep-seated reservoirs experience a longer and more intense impact of tectonic processes. A more detailed study of the composition and properties of reservoirs for an accurate forecast of reservoir properties and their productivity potential is due to this. Standard log interpretation methods have been developed based on shallow strata. These methods do not allow taking into account secondary changes in the reservoir and make the calculations of the starting flow rates of wells reliable. J1 stratum West Wing on Nizhnevartovsky set is a prime example of this.
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Spirina, Anastasiia, and Evgeniy Cherepanov. "Petroelastic Modeling of Complex Lithology Fields: Case Study." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208423-ms.

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Abstract The present-day growth of petroleum reserves, maintaining and enhancing of oil production is associated with involving of complex fields into production (Uspenskaya, 2014). The complex structure of the study areas of the Urai Region (facies variability, formation replacement, fracturing, crushing and cleavage zones, complicated structure of the pore space) makes conventional forecast of reservoir properties ineffective. Moreover, the pay formations are highly exhausted with high production water cut. Therefore, the search of prospective targets is relevant in the Urai Region. The article shows generalized results of petroelastic modeling of several fields of the Urai Region for solving the following tasks: ○ Lithology, saturation and poroperm properties forecast of reservoir rocks from log and seismic data; ○ Development of 1D mechanical earth models (MEM) of horizontal well sections and their maintenance while drilling horizontal wells. The approach is based on the principles of integrating different-scale geological and geophysical studies. The lithological division of rocks was carried out, the saturation behavior and point-by-point interpretation of the data of geophysical methods of well logging (WL) were identified. 3D component models were built with taking into account the lithological features of the section using core sample studies. Effective models for the environment of sediments of interest were selected and petroelastic modeling was carried out.
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Glotov, Anton Vasilievich. "Residual Water Content and Water Saturation of Bazhenov Formation Cores." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208418-ms.

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Abstract The article presents a new method of determining the residual water content and water saturation of the Bazhenov rocks formation (unconventional reservoir), which is contingent on the synchronous thermal analysis integrated with gas FT-IR spectroscopy and mass spectroscopy. The studies were executed on extensive factual core material. The combination of thermal and spectrometric methods for the identification of gases which are released during heating of core samples facilitated to analyze the dynamics of water release and proposed methods of its separation accordingly by the degrees of connectivity.
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Dulkarnaev, Marat Rafailevich, Evgeny Alexandrovich Malyavko, Ekaterina Evgenievna Semyonova, et al. "The Use of Quantum Dot Inflow Tracers in Multi-Well Reservoir Production Surveillance and Inter-Well Diagnostics." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208430-ms.

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Abstract Reservoir pressure maintenance is an extremely important factor in field development. In enhanced oil recovery water flooding projects, it is essential to optimize the flooding efficiency in a timely manner and reduce uncertainties in inter-well hydrodynamic modelling. Usually, the inter-well space parameters are assessed using interference tests or tracer- based surveillance. These methods offer such advantages as reliable information on the flow communication in the target area and the reservoir connectivity in different zones of the field. However, the duration and cost of the described surveillance technologies pose a significant drawback, and therefore alternative physical and mathematical methods with simplified forecast models are widely spread. This paper describes a method for integrating the results of dynamic marker-based inflow production surveillance in horizontal wells and the Spearman's rank-order correlation method. This approach is applied to provide better interventions for reservoir pressure maintenance, optimization of in-fill drilling, update existing hydro-dynamic models and reduce the level of uncertainty in decision making.
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Kunakasov, Arthur Ahatovich, Evgeniy Viktorovich Kharkov, and Robert Aleksandrovich Chigirev. "Mohr-Coulomb Envelope Based on Geomechanical Studies: West Siberian Fields Case Studies. Applied Methods." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208427-ms.

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Abstract The strength properties of the rock determine many physical processes occurring in the formation and at the bottom of the well. Deformation and destruction of rocks under the influence of external forces can be both a positive and a negative factor for working with formations at all stages of development. To create the optimal design of the well drilling trajectory, select the optimal development project, the fluids extraction rate from the formations, efficient planning and implementation of hydraulic fracturing procedures, prevention of emergencies during drilling and operation and reduction of oil recovery due to irreversible loss of reservoir properties and solving many other problems, it is necessary to consider possible destruction of the rock. The Mohr-Coulomb envelope (rock strength passport) can be used as a strength criterion for such tasks, it characterizes the boundary values of stresses in the rock, at which its destruction occurs according to the Mohr-Coulomb theory. At article discusses three methods for determinate strength passports based on the results of laboratory studies of rock samples: multistage loading of the sample, assessment of the sample fracture after triaxial compression strength test, the use of "twin" samples for testing. The features of each method, its advantages and limitations are disclosed, examples of construction of strength passports for rocks from fields in Western Siberia are shown. According to the research results, the most preferable is the use of "twin" samples. However, this method is associated with technical difficulties.
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Xiong, Xiaofei, and James Jia Sheng. "An Optimized Experimental Investigation of Foam-Assisted N2 Huff-n-Puff Enhanced Oil Recovery in Fractured Shale Cores." In SPE Symposium: Petrophysics XXI. Core, Well Logging, and Well Testing. SPE, 2021. http://dx.doi.org/10.2118/208431-ms.

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Abstract Sustainable development of shale reservoirs and enhanced oil recovery have become a challenge for the oil industry in recent years. Shale reservoirs are typically characterized by nano Darcy-scale matrix, natural fractures, and artificially fractures with high permeability. Some of earlier studies have confirmed that gas huff-n-puff has been investigated and demonstrated as the most effective and promising solution for improving oil recovery in tight shale reservoirs with ultra-low permeability. Fractures provide an advantage in enhancing recovery from shale reservoirs but they also pose serious problems such as severe gas channeling, which led to rapid decline production from a single well. More studies are needed to optimize the process. This paper studies the method of foam-assisted N2 huff-n-puff to enhance oil recovery in fractured shale cores. The influence of foam on oil recovery was analyzed. The effect of matrix permeability, cycle number and production time on oil recovery are also considered. The shale core used in the experiment was from Sichuan Basin, China. For the purpose of comparation and validation, two groups of tests were conducted. One group of tests was N2 huff-n-puff, and the other was foam-N2 huff-n-puff. In the optimization experiment, matrix permeabilities were set as 0.01mD, 0.008mD and 0.001mD, cycle numbers ranged from one to five, the production time is designed to be 1 hour and 24 hours respectively. During the puff period of experiments, the history of oil recovery was closely monitored to reveal the mechanism. During a round of gas injection of fractured shale cores, foam-assisted N2 huff-n-puff oil recovery is 4.59%, which is significantly higher than that of N2 huff-n-puff is only 0.0126%, and the contrast becomes more obvious with the increase of matrix permeability. The results also showed that the cumulative oil recovery increased as the number of cycles was increased, with the same experimental conditions. There is an optimal production time to achieve maximum oil recovery. The cycle numbers, matrix permeability, and production time played important roles in foam-assisted N2 huff-n-puff injection process. Therefore, under certain conditions, foam-N2 huff-n-puff has a positive effect on oil development in fractured shale.
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Reports on the topic "Well logging"

1

Normann, R. A., and J. A. Henfling. High temperature spectral gamma well logging. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/527429.

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LARRIESTRA, Claudio. Geochemical Well Logging by Geostatistical Integration of Cutting and Well Log Data. Cogeo@oeaw-giscience, 2011. http://dx.doi.org/10.5242/iamg.2011.0187.

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Hirasaki, George J., and Kishore, K. Mohanty. Fluid-Rock Characterization and Interactions in NMR Well Logging. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/782900.

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Hirasaki, George J., and Kishore K. Mohanty. Fluid-Rock Characterization and Interactions in NMR Well Logging. Office of Scientific and Technical Information (OSTI), 2001. http://dx.doi.org/10.2172/782901.

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George J. Hirasaki and Kishore K. Mohanty. Fluid-Rock Characterization and Interactions in NMR Well Logging. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/881436.

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Hirasaki, George J., and Kishore K. Mohanty. Fluid-Rock Characterization and Interactions in NMR Well Logging. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/807615.

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Hirasaki, George J., and Kishore K. Mohanty. Fluid-Rock Characterization and Interactions in NMR Well Logging. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/807616.

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8

Cummings, F. M., D. L. Haggard, and G. W. R. Endres. Evaluation of neutron dosimetry techniques for well-logging operations. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/5399666.

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9

Swanson, De Los Santos, and Miller. L51539 Improved Methods for Inspecting Gas Storage Well Downhole Casing. Pipeline Research Council International, Inc. (PRCI), 1987. http://dx.doi.org/10.55274/r0010090.

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A considerable background of prior work indicates that corrosion damaged casing in gas storage wells is largely due to the development of individual corrosion pits, which occur either on the inside or outside wall of the casing. Such pits are inevitably the result of electrochemical potentials, which are established between unlike conductive materials in an electrolyte. Damage is the result of localized loss of metal, which can be assessed in terms of the size of these individual corrosion flaws. Magnetic corrosion logging has been available for at least 25 years, but has not received wide acceptance as a basis for making intelligent repair decisions. An earlier PRCI-sponsored research study concluded that the best approach to short term improvement in the performance of current corrosion logging practice was the application of modern digital data acquisition techniques to one specific type of magnetic logging, namely, flux leakage or magnetic perturbation measurements. In this research program, experimental equipment of this type has been developed and demonstrated in conjunction with a cooperative effort with one of the logging companies (Dresser-Atlas). This equipment replaces the electronics assembly in the commercial instrument with a new package which samples each of the 12 (or 24) analog flux leakage sensor signals at a rate of either 86.8 or 173.6 samples per second, depending upon whether 24 of the sensors or only 12 are being sampled. The signals are digitized at this rate under the control of a downhole microprocessor, which formatsthe digital data into a serial bit stream and transmits it to the surface over standard logging cable. The data transmission system uses Manchester encoding and performs the data transfer at a maximum rate of 40,000 bits per second.
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Bond, Leonard J., Kayte M. Denslow, Jeffrey W. Griffin, et al. Evaluation of Non-Nuclear Techniques for Well Logging: Technology Evaluation. Office of Scientific and Technical Information (OSTI), 2010. http://dx.doi.org/10.2172/1006309.

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