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Browsing Earth Resources Laboratory Industry Consortia Technical Reports by Title

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Browsing Earth Resources Laboratory Industry Consortia Technical Reports by Title

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  • Burns, D. R.; Cheng, C. H.; Wilkens, R. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
    Measurements of pore shapes from Scanning Electron Microscope (SEM) images for three sandstone samples (the Navajo Sandstone, the Weber Sandstone, and the Kayenta Sandstone) are compared to the aspect ratio spectra ...
  • Imhof, Matthias G. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
    Well-logs show that heterogeneities occur at many different spatial scales. In this paper, we want to characterize how waves are affected by these heterogeneities, and we study how reflection and transmission coefficients ...
  • Herrmann, Felix J. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2000)
    AVO analysis of seismic data is based on the assumption that transitions in the earth consist of jump discontinuities only. The generalization of this type of transition to a more realistic class of transitions shows a ...
  • Shen, Feng; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
    Offset-dependent characteristics of seismic scattering are useful in the interpretation of fractured reservoirs. Synthetic seismograms generated by a 3-D finite difference modeling are used to study elastic wave propagation ...
  • Imhof, Matthias G. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1995)
    In this paper, two different methods to solve scattering problems in acoustic or elastic media are coupled to enhance their usefulness. The multiple multipole (MMP) expansions are used to solve for the scattered fields ...
  • Meredith, J . A.; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
    The purpose of this paper is to synthesize the most important results of the thesis work of Meredith (1990) concerning radiation from seismic sources in boreholes. Previous studies of radiation from sources in boreholes ...
  • Lee, Jung Mo; Gibson, Richard L., Jr.; Toksoz, M. Nafi; Cameli, Gian Mauro; Batini, Fausto; Dini, Ivano (Massachusetts Institute of Technology. Earth Resources Laboratory, 1995)
    Surface seismic reflection surveys and VSP's have been extensively carried out in the Monteverdi area, within the Larderello region. Calibration of these seismic observations with data from numerous deep wells allowed ...
  • Herrmann, Felix J. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2000)
    Over the years, there has been an ongoing struggle to relate well-log and seismic data due to the inherent bandwidth limitation of seismic data, the problem of seismic amplitudes, and the apparent inability to delineate ...
  • Saggaf, Muhammad M.; Toksoz, M. Nafi; Marhoon, Maher I. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2000)
    We present an approach based on competitive networks for the classification and identification of reservoir facies from seismic data. This approach can be adapted to perform either classification of the seismic facies based ...
  • Malcolm, Alison E.; Ursin, Bjørn; de Hoop, Maarten V. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2008)
    If singly scattered seismic waves illuminate the entirety of a subsurface structure of interest, standard methods can be applied to image it. It is generally the case, however, that with a combination of restricted ...
  • Block, Lisa V.; Cheng, C. H.; Fehler, Michael C.; Phillips, W. Scott (Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
    The Los Alamos Hot Dry Rock Reservoir is an experimental geothermal project in north-central New Mexico. A fractured zone was created within otherwise impermeable igneous and metamorphic rock by injecting water into a ...
  • Pearce, Frederick Douglas (Massachusetts Institute of Technology. Earth Resources Laboratory, 2003-09)
    We use a 3-D finite difference numerical model to generate synthetic seismograms from a simple fractured reservoir containing evenly-spaced, discrete, vertical fracture zones. The fracture zones are represented using a ...
  • Toksoz, M. N.; Cheng, C. H.; Willis, M. E. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1983)
    The propagation of seismic waves in an open borehole is reviewed. The principal wave types are the refracted P and S waves and the two guided waves - pseudo-Rayleigh and Stoneley. The dispersion properties of the guided ...
  • Zhu, Zhenya; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1999)
    Seismoelectric and seismomagnetic fields generated by acoustic waves in fluid-saturated fractured borehole models are experimentally investigated with an electrode and a Halleffect sensor. In a borehole with a horizontal ...
  • Zhu, Zhenya; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
    The seismoelectric logging method is based on measuring the electric field generated by seismic waves in a fluid-filled borehole. Two kinds of electromagnetic (EM) fields can be generated within the formation and at the ...
  • Schakel, Menne D.; Zhu, Zhenya; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2009)
    Seismic to electromagnetic wave conversion has been proposed as a possible exploration method. We present laboratory measurements of the conversion of an acoustic wave into electric potential, which occurs at a ...
  • Krasovec, Mary L.; Rodi, William L.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
    The variation in seismic P to P reflection amplitude with offset (AVO) caused by a system of fractures embedded in an isotropic background is investigated. Additionally. a sensitivity analysis of AVO parameters with ...
  • Fang, Xinding; Fehler, Michael; Chen, Tianrun; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    The understanding of seismic scattering of a finite fracture is very important in reservoir fracture characterizations, but the analytical solution of this problem is not available. Thus, in this paper, we present an ...
  • Sierra, Jesus; Queen, John H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
    We present an original method to estimate local shear wave birefringence properties for 3-D surface P to S converted waves. To accomplish this we approach the problem in reverse VSP (RVSP), and we show that they are ...
  • Toksoz, M. Nafi; Al-Dajani, AbdulFattah (Massachusetts Institute of Technology. Earth Resources Laboratory, 2000)
    The presence of azimuthal anisotropy causes shear wave propagation to split into fast and slow shear waves. The most common azimuthally anisotropic models used to describe fractured reservoirs are transverse isotropy ...
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