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Anisotropy (electrical)

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Proceedings Papers

Paper presented at the 1993 SEG Annual Meeting, September 26–30, 1993
Paper Number: SEG-1993-0367
... ABSTRACT No preview is available for this paper. upstream oil & gas vozoff resolution electromagnetic measurement strack media determination field data resistivity anisotropy electrical anisotropy coefficient joint inversion exploration inversion result inversion...
Proceedings Papers

Paper presented at the 2015 SEG Annual Meeting, October 18–23, 2015
Paper Number: SEG-2015-5919757
... Summary In this study we use Controlled Source Electromagnetic (CSEM) data, well log data and rock physics to investigate electrical anisotropy drivers in the Snøhvit area of the Barents Sea. Results show that for the shale dominated sediments electrical anisotropy varies systematically...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216147
... ABSTRACT Controlled-source electromagnetic (CSEM) method has evolved into an established geophysical technique and found its increasing applications on land, marine and airborne. However, irregular undulated earth surface and electrical anisotropy of geological formations are often encountered...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1440
... Summary We present a study on determining electrical anisotropy in a 1D environment and its application to the characterization of anisotropic hydrogeologic parameters. The solution we have developed utilizes simultaneously the information in 1D DC resistivity and time-domain electromagnetics...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, March 26–28, 2019
Paper Number: IPTC-19355-MS
... conductive fracture basement fracture micro-resistivity log unconventional reservoir basement reservoir anisotropy electrical micro-image log international petroleum technology conference Abstract Owing to the depleting reserves in the conventional reservoirs over the last few years...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3583981
... a long period; second, the magnetic field is the most sensitive field when discriminating different types of anisotropy for all receiver positions, the horizontal electric field does in the top and above the anisotropic layer and the vertical electric field does inside it; third, in both stratified...
Proceedings Papers

Publisher: Society of Petroleum Engineers (SPE)
Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-206109-MS
... computed through simulation of various physical phenomenon. In this paper, we document a workflow for estimation of tortuosity anisotropy in both whole-core CT-scan and micro-CT-scan image stacks and compare the tortuosity estimates obtained from simulation of electric potential distribution, diffusion...
Proceedings Papers

Paper presented at the 2014 SEG Annual Meeting, October 26–31, 2014
Paper Number: SEG-2014-1259
... shale laminations and shale anisotropy. In this study, we incorporate a depth-dependent Thomas-Stieber model to describe the shale laminations. From the vertical and horizontal resistivity, an electrical anisotropy template was built in conjunction with the modified Thomas-Stieber model. The template...
Proceedings Papers

Paper presented at the SPWLA 51st Annual Logging Symposium, June 19–23, 2010
Paper Number: SPWLA-2010-28073
... clay-bound water Upstream Oil & Gas formation dip Symposium saturation anisotropy reservoir SPWLA 51st Annual Logging Symposium, June 19-23, 2010 Integration of Electrical Anisotropy, Magnetic Resonance, and Nuclear Spectroscopy Data for Improved Petrophysical Interpretation of Wells...
Journal Articles
Petrophysics 49 (03).
Paper Number: SPWLA-2008-v49n3a1
Published: 01 June 2008
...Jean-Baptiste Clavaud ABSTRACT The effect of compaction upon shale electrical anisotropy is analyzed using multi-component induction logging data acquired in Miocene shales. Multi-component induction logging technology provides an estimate of the resistivity parallel to bedding (i.e...
Proceedings Papers

Paper presented at the 2004 SEG Annual Meeting, October 10–15, 2004
Paper Number: SEG-2004-0624
... that the scattered potential FD method successfully competes with alternative finite-difference methods used to simulate borehole EM logging responses in the presence of 3D inhomogeneous anisotropic media. potential formulation electrical conductivity anisotropy khz anisotropic media reservoir simulation...
Proceedings Papers

Paper presented at the SPWLA 44th Annual Logging Symposium, June 22–25, 2003
Paper Number: SPWLA-2003-YY
... of azimuthal electrical tools (with electrodes displaced from a borehole axis) for the determination of the horizontal components of the resistivity tensor and azimuth of the anisotropy axis. For this purpose, based on the developed resistivity model for fractured carbonate formations, we estimated...
Proceedings Papers

Paper presented at the Offshore Mediterranean Conference and Exhibition, March 26–28, 2003
Paper Number: OMC-2003-113
... ABSTRACT: Recently, Baker Atlas introduced a new wireline openhole Multi-component Induction service, the 3D ExplorerSM, for measuring transverse electrical anisotropy. The measurement enables operators to detect and accurately quantify hydrocarbon reserves in certain depositional environments...
Proceedings Papers

Paper presented at the 2002 SEG Annual Meeting, October 6–11, 2002
Paper Number: SEG-2002-0700
... (harmonic decomposition). log analysis anisotropic media coefficient harmonic decomposition well logging electrical sonde amplitude axis resistivity verzhbitskii harmonic coefficient anisotropic medium borehole mean resistivity azimuthal anisotropy estimation anisotropy electrode...
Journal Articles
SPE Res Eval & Eng 4 (06): 483–488.
Paper Number: SPE-75115-PA
Published: 01 December 2001
...Jon Bang; Arne Solstad; Svein Mjaaland Summary An existing theory describes how electrical anisotropy in the formationaffects the response of resistivity logging tools. We have related this theory to the processing of logging while drilling (LWD) induction logs and are thus able to calculate...
Proceedings Papers

Paper presented at the 2001 SEG Annual Meeting, September 9–14, 2001
Paper Number: SEG-2001-1536
... Summary In regions with distinct dipping stratification the traditional isotropic layered earth is an inadequate model. In this case, it is useful to extend the model to a layered earth with general anisotropy such that to each layer is assigned a symmetrical 3 × 3 resistivity tensor...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 1–4, 2000
Paper Number: SPE-62908-MS
... Abstract An existing theory describes how electrical anisotropy in the formation affects the response of resistivity logging tools. We have related this theory to the processing of LWD induction logs, and are thus able to calculate the anisotropic resisticities directly from the logs...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 3–6, 1999
Paper Number: SPE-56509-MS
... determination sand resistivity water saturation calculation saturation macroscopic electrical anisotropy upstream oil & gas shale log analysis spe 56509 well logging fraction electrical anisotropy Copyright 1999, Society of Petroleum Engineers Inc. This paper was prepared for presentation...
Proceedings Papers

Paper presented at the 1998 SEG Annual Meeting, September 13–18, 1998
Paper Number: SEG-1998-1064
... ABSTRACT No preview is available for this paper. permeability open crack perpendicular open microcrack shear wave splitting anisotropy porosity crack system microcrack upstream oil & gas electrical conductivity reservoir characterization wave velocity orientation shear...
Proceedings Papers

Paper presented at the Latin American and Caribbean Petroleum Engineering Conference, August 30–September 3, 1997
Paper Number: SPE-39012-MS
.... The need to quantify the horizontal resistivity values (Rh) in horizontal or highly deviated wells so as to enable comparison with the resistivity values derived from vertical wells, is a topic of much ongoing research. Effects, such as electrical anisotropy important in the interpretation of resistivity...

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