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Sofia Davydycheva

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Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425809
... acquisition lwd knizhnerman ultra-deep resistivity imaging geophysics druskin seg international exposition Quality control of ultra-deep resistivity imaging using fast 3D electromagnetic modeling Sofia Davydycheva* (3DEM Holding, Houston, TX), Vladimir Druskin (Worcester Polytechnic Institute, Boston...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-0759
... Focused Source EM Survey versus time- and frequency-domain CSEM Sofia Davydycheva*, R&D 3DEM Consulting, Sugar Land, Texas, and Nikolai Rykhlinski, Institute of Innovative Methods of Geophysics, Moscow, Russia Summary A new Focused Source Electromagnetic (FSEM) method exploits an idea of focusing...
Proceedings Papers

Paper presented at the 2009 SEG Annual Meeting, October 25–30, 2009
Paper Number: SEG-2009-0446
... wire-line and LWD resistivity tools. Sofia Davydycheva, R&D 3D EM Consulting, Sugar Land, Texas Summary The present paper pursues two principal objectives. First, a universal 3D finite-difference (FD) modeling approach is introduced to simulate responses of a few different logging resistivity tools of...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2997076
... hoversten turnoff strack transmitter seg international exposition resistivity anisotropy feasibility study sensitivity annual meeting reservoir characterization receiver davydycheva upstream oil & gas electric dipole csem sofia davydycheva anisotropy application Bachinger , F...
Proceedings Papers

Paper presented at the 2011 SEG Annual Meeting, September 18–23, 2011
Paper Number: SEG-2011-0494
... anisotropic medium Modeling of electromagnetic logs in a layered, biaxially anisotropic medium Sofia Davydycheva* and Tsili Wang, PathFinder - A Schlumberger Company, Houston, Texas Summary A fast 1D electromagnetic (EM) modeling method has been developed and tested. It allows simulating triaxial responses...
Proceedings Papers

Paper presented at the SPWLA 52nd Annual Logging Symposium, May 14–18, 2011
Paper Number: SPWLA-2011-WWW
... boundary saturation invasion dispersion correction reservoir permeability Tornado Chart SPWLA 52nd Annual Logging Symposium, May 14-18, 2011 1 On the Efficacy of Tornado Charts Rohollah A. Pour, The University of Texas at Austin David Kennedy and Sofia Davydycheva, PathFinder, a Schlumberger...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0775
... seafloor conductivity druskin Finite-difference solution of the three-dimensional electromagnetic problem using divergence-free preconditioners Mike Zaslavsky , Sofia Davydycheva, Vladimir Druskin, Aria Abubakar, Tarek Habashy, Schlumberger, USA and Leonid Knizhnerman, Central Geophysical Expedition...
Proceedings Papers

Paper presented at the 2008 SEG Annual Meeting, November 9–14, 2008
Paper Number: SEG-2008-0284
...Sensitivity study and inversion of the fully-triaxial induction logging in cross-bedded anisotropic formation Hanming Wang*, Sofia Davydycheva, Schlumberger, Jinjuan Zhou, University of Houston, Mark Frey, Tom Barber, Aria Abubakar, Tarek Habashy, Schlumberger Summary We developed a three...
Proceedings Papers

Paper presented at the 2006 SEG Annual Meeting, October 1–6, 2006
Paper Number: SEG-2006-0406
... tool wang good agreement Triaxial Induction Tool with Electrode Sleeve: A Study of Its Response to Borehole Eccentricity Sofia Davydycheva*, Dean Homan, and Gerald Minerbo, Schlumberger, Sugar Land Product Center Summary We developed a finite difference (FD) code to model the response of a...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0604
... exposition oil search An electrical prospecting method for oil search using the induced polarization effect Sofia Davydycheva *, Nikolai Rykhlinsky, Central Geophysical Expedition, Peter Legeido, Irkutskgeofizika Summary We propose a method of surface and marine electrical prospecting using artificial...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0632
... electric field equation october 2004 upstream oil & gas habashy druskin anisotropic media davydycheva node finite-difference scheme media log analysis approximation Finite-difference scheme for electromagnetic logging in 3D anisotropic media Sofia Davydycheva*, Vladimir Druskin, and...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0616
... inversion A three-dimensional parametric inversion of multi-component multi-spacing induction logging data Aria Abubakar, Tarek M. Habashy, Vladimir Druskin, Schlumberger-Doll Research, Sofia Davydycheva, Hanming Wang, Tom Barber, Schlumberger Product Center and Leonid Knizhnerman, Central Geophysical...
Journal Articles
Petrophysics - The SPWLA Journal of Formation Evaluation and Reservoir Description 40 (05).
Paper Number: SPWLA-1999-v40n5a2
Published: 01 September 1999
...Barbara Anderson; Thomas Barber; Sofia Davydycheva; Druskin Vladimir; Elizabeth Dussan; Leonid Knizhnerman; Ping Lee With the rapid expansion of horizontal drilling, the interpretation of logs, especially resistivity logs, has become an increasingly complex problem. The proximity of shale layers or...
Proceedings Papers

Paper presented at the International Oil & Gas Conference and Exhibition in China, December 5–7, 2006
Paper Number: SPE-103897-MS
... Interpretation Hanming Wang, SPE, Tom Barber, SPE, Kouchiang Chen, SPE, Sofia Davydycheva, Mark Frey, SPE, Dean Homan, SPE, Gerald Minerbo, Chris Morriss, SPE, Richard Rosthal, SPE, Jan Smits, SPE, and Giovanni Tumbiolo, Schlumberger 2 SPE 103897 Theory The fundamental component of triaxial induction tool...
Proceedings Papers

Paper presented at the SPWLA 44th Annual Logging Symposium, June 22–25, 2003
Paper Number: SPWLA-2003-QQ
... anisotropy SPWLA 44 th Annual Logging Symposium, June 22-25, 2003 FIELD TEST RESULTS OF AN EXPERIMENTAL FULLY- TRIAXIAL INDUCTION TOOL Richard Rosthal, Tom Barber, Steve Bonner, Kuo-Chang Chen, Sophia Davydycheva, Gary. Hazen, Dean Homan, Charles Kibbe, Gerald Minerbo, Robert Schlein, Laurent Villegas...
Proceedings Papers

Paper presented at the SPWLA 38th Annual Logging Symposium, June 15–18, 1997
Paper Number: SPWLA-1997-N
... better understanding of tool physics and provides the basis for the design of new tools and interpretation methods. log analysis Davydycheva shale Symposium Upstream Oil & Gas borehole geometry human computer interaction curve separation tool response grid resistivity invasion...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0784
... Triaxial induction tool response in 1D layered biaxial anisotropic formation Sofia Davydycheva, 3DEM Holding, Mengsu Zhou*, and Richard Liu, University of Houston Summary A fast 1D electromagnetic modeling method for simulating electromagnetic (EM) field in biaxial anisotropic formation is applied to model...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-0186
... effect and made serious attempts to characterize hydrocarbon accumulations by electrical methods (Davydycheva, 2006; He, 2010; Commer, 2011). The IP effect is captured and evaluated by relatively new electromagnetic attributes which will help to solve some problems encountered in proper evaluation of the...
Proceedings Papers

Paper presented at the SPWLA 50th Annual Logging Symposium, June 21–24, 2009
Paper Number: SPWLA-2009-48563
... measurements. ACKNOWLEDGMENTS The authors thank the oil companies for permission to use their data in this paper. The authors are especially grateful to Vladimir Druskin, Mikhail Zaslavsky, Aria Abubakar and Sushil Shetty from Schlumberger-Doll Research, and to Ray Kocian, Sofia Davydycheva, Leonid Knizhnerman...
Proceedings Papers

Paper presented at the 2000 SEG Annual Meeting, August 6–11, 2000
Paper Number: SEG-2000-1814
.... 5. Barbara Anderson, Thomas Barber, Vladimir Druskin, Ping Lee, Elizabenth Dussan V. Leonid Knizhnerman SEG 2000 Expanded Abstracts Azimuthal Electromagnetic Wave Well Logging Response Computation By 3D FDTM and Sofia Davydycheva, 1996, The response of multiarray induction tools in highly dipping...

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