Influence of borehole-eccentred tools on wireline and logging-while-drilling sonic logging measurements

Handle URI:
http://hdl.handle.net/10754/562654
Title:
Influence of borehole-eccentred tools on wireline and logging-while-drilling sonic logging measurements
Authors:
Pardo, David; Matuszyk, Paweł Jerzy; Torres-Verdín, Carlos; Mora Cordova, Angel; Muga, Ignacio; Calo, Victor M. ( 0000-0002-1805-4045 )
Abstract:
We describe a numerical study to quantify the influence of tool-eccentricity on wireline (WL) and logging-while-drilling (LWD) sonic logging measurements. Simulations are performed with a height-polynomial-adaptive (hp) Fourier finite-element method that delivers highly accurate solutions of linear visco-elasto-acoustic problems in the frequency domain. The analysis focuses on WL instruments equipped with monopole or dipole sources and LWD instruments with monopole excitation. Analysis of the main propagation modes obtained from frequency dispersion curves indicates that the additional high-order modes arising as a result of borehole-eccentricity interfere with the main modes (i.e., Stoneley, pseudo-Rayleigh and flexural). This often modifies (decreases) the estimation of shear and compressional formation velocities, which should be corrected (increased) to account for borehole-eccentricity effects. Undesired interferences between different modes can occur at different frequencies depending upon the properties of the formation and fluid annulus size, which may difficult the estimation of the formation velocities. © 2013 European Association of Geoscientists & Engineers.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Environmental Science and Engineering Program; Numerical Porous Media SRI Center (NumPor)
Publisher:
Wiley
Journal:
Geophysical Prospecting
Issue Date:
13-Feb-2013
DOI:
10.1111/1365-2478.12022
Type:
Article
ISSN:
00168025
Sponsors:
The work reported in this paper was funded by the University of Texas at Austin Research Consortium on Formation Evaluation, jointly sponsored by Anadarko, Aramco, Baker-Hughes, BG, BHP Billiton, BP, Chevron, ConocoPhillips, ENI, ExxonMobil, Halliburton, Hess, Marathon, Mexican Institute for Petroleum, Nexen, Pathfinder, Petrobras, Repsol-YPF, RWE, Schlumberger, Statoil, Total and Weatherford. The first author was partially funded by the Spanish Ministry of Sciences and Innovation under project MTM2010-16511, the Laboratory of Mathematics (UFI 11/52) and the Ibero-American Project CYTED 2011 (P711RT0278).
Appears in Collections:
Articles; Environmental Science and Engineering Program; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorPardo, Daviden
dc.contributor.authorMatuszyk, Paweł Jerzyen
dc.contributor.authorTorres-Verdín, Carlosen
dc.contributor.authorMora Cordova, Angelen
dc.contributor.authorMuga, Ignacioen
dc.contributor.authorCalo, Victor M.en
dc.date.accessioned2015-08-03T10:59:56Zen
dc.date.available2015-08-03T10:59:56Zen
dc.date.issued2013-02-13en
dc.identifier.issn00168025en
dc.identifier.doi10.1111/1365-2478.12022en
dc.identifier.urihttp://hdl.handle.net/10754/562654en
dc.description.abstractWe describe a numerical study to quantify the influence of tool-eccentricity on wireline (WL) and logging-while-drilling (LWD) sonic logging measurements. Simulations are performed with a height-polynomial-adaptive (hp) Fourier finite-element method that delivers highly accurate solutions of linear visco-elasto-acoustic problems in the frequency domain. The analysis focuses on WL instruments equipped with monopole or dipole sources and LWD instruments with monopole excitation. Analysis of the main propagation modes obtained from frequency dispersion curves indicates that the additional high-order modes arising as a result of borehole-eccentricity interfere with the main modes (i.e., Stoneley, pseudo-Rayleigh and flexural). This often modifies (decreases) the estimation of shear and compressional formation velocities, which should be corrected (increased) to account for borehole-eccentricity effects. Undesired interferences between different modes can occur at different frequencies depending upon the properties of the formation and fluid annulus size, which may difficult the estimation of the formation velocities. © 2013 European Association of Geoscientists & Engineers.en
dc.description.sponsorshipThe work reported in this paper was funded by the University of Texas at Austin Research Consortium on Formation Evaluation, jointly sponsored by Anadarko, Aramco, Baker-Hughes, BG, BHP Billiton, BP, Chevron, ConocoPhillips, ENI, ExxonMobil, Halliburton, Hess, Marathon, Mexican Institute for Petroleum, Nexen, Pathfinder, Petrobras, Repsol-YPF, RWE, Schlumberger, Statoil, Total and Weatherford. The first author was partially funded by the Spanish Ministry of Sciences and Innovation under project MTM2010-16511, the Laboratory of Mathematics (UFI 11/52) and the Ibero-American Project CYTED 2011 (P711RT0278).en
dc.publisherWileyen
dc.subjectBoreholeen
dc.subjectEccentreden
dc.subjectWirelineen
dc.titleInfluence of borehole-eccentred tools on wireline and logging-while-drilling sonic logging measurementsen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentEnvironmental Science and Engineering Programen
dc.contributor.departmentNumerical Porous Media SRI Center (NumPor)en
dc.identifier.journalGeophysical Prospectingen
dc.contributor.institutionUniversity of the Basque Country (UPV/EHU) and IKERBASQUE (Basque Foundation for Sciences), Bilbao, Spainen
dc.contributor.institutionThe University of Texas at Austin, Austin TX, United Statesen
dc.contributor.institutionPontificia Universidad Católica de Valparaíso, Chileen
dc.contributor.institutionUniversity of Science and Technology, Kraków, Polanden
kaust.authorCalo, Victor M.en
kaust.authorMora Cordova, Angelen
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