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A comparison of LWD and wireline dipole sonic data

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dc.contributor.author Briggs, Victoria
dc.contributor.author Rao, Rama V. N.
dc.contributor.author Grandi, Samantha K.
dc.contributor.author Burns, Daniel R.
dc.contributor.author Chi, Shihong
dc.contributor.other Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.date.accessioned 2012-01-20T18:49:47Z
dc.date.available 2012-01-20T18:49:47Z
dc.date.issued 2004
dc.identifier.uri http://hdl.handle.net/1721.1/68623
dc.description.abstract Data measured by both wireline and LWD tools in the same borehole are compared. Discrepancies in shear velocities as calculated from the data are on average around 5% and discrepancies between compressional velocities are less than 3%. The consistency of the bias between logs suggest it is related to the calculation of velocity. Comparison of industry and ERL velocity processing show excellent agreement and give an example of possible spread of velocity data due to processing chain. A short section of data in an unconsolidated zone shows velocity differences of just over 10% with an opposite trend to the over all bias. Dispersion analysis of the waveforms show this is consistent with a damaged zone surrounding the borehole wall caused by drilling. en_US
dc.description.sponsorship Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.description.sponsorship Massachusetts Institute of Technology. Borehole Acoustics and Logging Consortium en_US
dc.publisher Massachusetts Institute of Technology. Earth Resources Laboratory en_US
dc.relation.ispartofseries Earth Resources Laboratory Industry Consortia Annual Report;2004-12
dc.title A comparison of LWD and wireline dipole sonic data en_US
dc.type Technical Report en_US
dc.contributor.mitauthor Briggs, Victoria
dc.contributor.mitauthor Rao, Rama V. N.
dc.contributor.mitauthor Grandi, Samantha K.
dc.contributor.mitauthor Burns, Daniel R.
dc.contributor.mitauthor Chi, Shihong
dspace.orderedauthors Briggs, Victoria; Rao, Rama V. N.; Grandi, Samantha K.; Burns, Daniel R.; Chi, Shihong en_US


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