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Browsing Earth Resources Laboratory by Title

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  • Fang, Xinding; Fehler, Michael; Zhu, Zhenya; Chen, Tianrun; Brown, Stephen; Cheng, Arthur; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
    Formation elastic properties near a borehole may be altered from their original state due to the stress concentration around the borehole. This could result in a biased estimation of formation properties but could provide ...
  • McLeod, Aileen E.; Dawers, Nancye H.; Underhill, John R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2001)
    Through examination of the scaling relations of faults and the use of seismic stratigraphic techniques, we demonstrate how the temporal and spatial evolution of the fault population in a half-graben basin can be accurately ...
  • Zhu, Zhenya; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1993)
    Flexural waves generated by a dipole source have been studied theoretically and used to estimate the shear parameters of a formation. The basic principles and main properties of flexural waves propagating in a borehole ...
  • Herrmann, Felix (Massachusetts Institute of Technology. Earth Resources Laboratory, 2001)
    Seismological images represent maps of the earth's structure. Apparent bandwidth limitation of seismic data prevents successful estimation of transition sharpness by the multiscale wavelet transform. We discuss the application ...
  • Tang, X. M.; Zhu, Zhenya; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1992)
    The radiation patterns of an elastic wave field generated by circular plane compressional and shear transducers are derived using the method of steepest descent. These patterns contain both effects of the elastic half ...
  • Zhang, Jie; Lavely, Eugene; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1997)
    A useful approach to optimal seismic survey design is to simulate the seismic response for a suite of a priori subsurface models and shot-receiver templates. The response can be used to evaluate many criteria such as ...
  • Malcolm, Alison E.; de Hoop, Maarten V.; Ursin, Bjorn (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    As more resources are directed toward reverse-time migration an accurate velocity model, including strong reflectors, is necessary to form a clear image of the subsurface. This is of particular importance in the vicinity ...
  • Lu, Rongrong; Willis, Mark E.; Campman, Xander; Ajo-Franklin, Jonathan B.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)
    We describe a new short cut strategy to image the sediments and salt edge around a salt flank through an overburden salt canopy. We demonstrate its performance and capabilities on a synthetic acoustic seismic data from ...
  • Al-Dajani, AbdulFattah; Alkhalifah, Tariq (Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
    Horizontal transverse isotropy (HTI) is the simplest azimuthally anisotropic model used to describe vertical fracturing in an isotropic matrix. Using the elliptical variation of P-wave normal-moveout (NMO) velocity with ...
  • AI-Dajani, AbdulFattah; Alkhalifah, Tariq; Morgan, Dale (Massachusetts Institute of Technology. Earth Resources Laboratory, 1999)
    Parameter estimation from elliptical variations in the normal-moveout (NMO) velocity in azimuthally anisotropic media is sensitive to the angular separation between the survey lines in 2D, or equivalently source-to-receiver ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
    This report contains the results of work completed during the sixth year of the Full Waveform Acoustic Logging Consortium in the Earth Resources Laboratory at M.LT. Over the last six years, our work have evolved from ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
    This report contains the results of work completed during the seventh year of the Full Waveform Acoustic Logging Consortium in the Earth Resources Laboratory at M.LT. During the past year, we have been concentrating on ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
    This report contains the results of work completed during the ninth year of the Full Waveform Acoustic Logging Consortium in the Earth Resources Laboratory at M.LT. During the past year, we have started the evolution ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1992)
    This report contains the results of work completed during the tenth year of the Borehole Acoustics and Logging Consortium in the Earth Resources Laboratory at M.l.T. This is the first year that the Consortium has been ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
    This report contains the results of work completed during the eighth year of the Full Waveform Acoustic Logging Consortium in the Earth Resources Laboratory at M.I.T. During the past year, we were able to accomplish many ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1993)
    This report contains the results of work completed during the eleventh year of the Borehole Acoustics and Logging Consortium in the Earth Resources Laboratory at M.LT. We continued our trend toward more general borehole ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)
    This report contains the results of work completed during the twelfth year of the Borehole Acoustics and Logging Consortium in the Earth Resources Laboratory at M.LT. This year we have achieved one of our major goals in ...
  • Gibson, Richard L., Jr. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1996)
    This report describes work performed by the Reservoir Delineation Consortium during the past year. We have made progress in the areas of theoretical analysis of wave propagation, data analysis, and significant field work ...
  • Fang, Xinding; Fehler, Michael; Zhu, Zhenya; Zheng, Yingcai; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
    The measurements of fracture parameters, such as fracture orientation, fracture density and fracture compliance, in a reservoir is very important for field development and exploration. Traditional seismic methods for ...
  • Zheng, Yibing; Burridge, Robert; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2003)
    We are developing a finite element program for oil and gas reservoir simulation based on Biot's poroelastic theory, where a simultaneous solution is sought for both the pore pressure and strain in the solid phase. Several ...
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