Advanced Search
DSpace@MIT

Browsing Earth Resources Laboratory by Title

Research and Teaching Output of the MIT Community

Browsing Earth Resources Laboratory by Title

Sort by: Order: Results:

  • Theophanis, Stephen; Zhu, Xiang (Massachusetts Institute of Technology. Earth Resources Laboratory, 1997)
    Vve examine seismic waves scattered from anisotropic heterogeneity with laboratory data and numerical modeling in order to develop modeling techniques for the characterization of fracture properties in tight gas sands ...
  • Toksoz, M. N.; Guler, Fatih (Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)
    A set of ultrasonic experiments was carried out to determine the effects of horizontal and vertical fractures on full waveform acoustic logs. Boreholes of 1 cm diameter were drilled in aluminum blocks. Measurements were ...
  • Poliannikov, Oleg V.; Prange, Michael; Malcolm, Alison E.; Djikpesse, Hugues (Massachusetts Institute of Technology. Earth Resources Laboratory, 2013)
    We study the problem of determining an unknown microseismic event location relative to previously located events using a single monitoring array in a monitoring well. We show that using the available information about the ...
  • Poliannikov, Oleg V.; Prange, Michael; Malcolm, Alison E.; Djikpesse, Hugues (Massachusetts Institute of Technology. Earth Resources Laboratory, 2012)
    We study the problem of determining an unknown event location relative to previously located events using a single monitoring array in a monitoring well. We show that using the available information about the previously ...
  • Mikhailov, Oleg V.; Queen, John H.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1997)
    We present a new type of field measurement capable of detecting and characterizing fractured (permeable) zones intersecting a borehole. The method is based on measuring electrical fields generated by a borehole Stoneley ...
  • Yang, Di; Malcolm, Alison E.; Fehler, Michael (Massachusetts Institute of Technology. Earth Resources Laboratory, 2013)
    Time-lapse seismic data are widely used for monitoring subsurface changes. A quantitative assessment of how reservoir properties have changed allows for better interpretation of fluid substitution and migration during ...
  • van Wijk, Kasper; Mikessel, Dylan; Melo, Gabriela; Malcolm, Alison E. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    Seismic interferometry is a technique used to estimate the Green’s function (GF) between two receiver locations, as if there were a source at one of the locations. By crosscorrelating the recorded seismic signals at the ...
  • Melo, Gabriela; Malcolm, Alison E.; Mikesell, Dylan; van Wijk, Kasper (Massachusetts Institute of Technology. Earth Resources Laboratory, 2013)
    Seismic interferometry (SI) is a technique used to estimate the Green’s function (GF) between two receiver locations, as if there were a source at one of the receiver locations. However, in many applications, the requirements ...
  • Hayashi, Koichi; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1999)
    We have developed a two-dimensional viscoelastic finite-difference modeling method for highly complex topography. Realistic modeling of seismic wave propagation in the near surface is complicated by many factors, such ...
  • Block, Lisa V.; Cheng, C. H.; Duckworth, Gregory L. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)
    Average semblance and maximum-likelihood spectral analyses are applied to synthetic and field full waveform acoustic logging data to determine formation velocities. Of particular interest is the ability of these methods ...
  • Mendelson, Jim; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
    Using ultrasonic velocity measurements taken over a multiplicity of directions we show that samples exhibit weak to moderate anisotropy of seismic velocities. We further define the anisotropic geometry with high resolution ...
  • Gibson, Richard L. Jr.; Toksoz, M. Nail (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
    A model for attenuation of acoustic waves in suspensions is proposed which includes an energy loss due to viscous fluid flow around spherical particles. The expression for the complex wavenumber is developed by considering ...
  • Shabelansky, Andrey Hanan; Malcolm, Alison E.; Fehler, Michael (Massachusetts Institute of Technology. Earth Resources Laboratory, 2011)
    Identifying the relationship between surface seismic data and a particular region in the earth, referred to as visibility analysis, is important because it facilitates the optimization of the quality and speed of the imaging ...
  • van der Hilst, Robert D.; de Hoop, Maarten V.; Shen, Peng (Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)
    In seismic tomography, the finite frequency content of broad-band data leads to interference effects in the process of medium reconstruction, which are ignored in traditional ray theoretical implementations. Various ways ...
  • Kane, Jonathan; Herrmann, Felix; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2002)
    We present a non-linear method for solving linear inverse problems by thresholding coefficients in the wavelet domain1. Our method is based on the wavelet-vaguelette decomposition of Donoho (1992). Numerical results for ...
  • Kane, Jonathan; Herrmann, Felix; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2001)
    Solving linear inversion problems in geophysics is a major challenge when dealing with non-stationary data. Certain non-stationary data sets can be shown to lie in Besov function spaces and are characterized by their ...
  • Tang, X. M.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1989)
    A laboratory experimental study has been carried out to investigate the mode trapping characteristics of a fluid-filled fracture between two elastic solids. Using a small circular cylindrical receiver of 2.7 mm diameter, ...
  • Lineman, D. J.; Mendelson, J. D.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)
    We present a novel system for well-to-well log correlation using knowledge-based systems and dynamic depth warping techniques. This approach overcomes a major drawback inherent in previous methods, namely the difficulty ...
  • Untitled 
    Tezuka, Kazuhiko; Cheng, C. H.; Tang, X. M. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)
    This paper describes a propagator matrix formulation for the problem of the Stoneley wave propagation in an irregular borehole. This is based on a simple one-dimensional theory that is possible for the low frequency ...
  • Untitled 
    Cheng, Arthur C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1996)
    This is the second year we have combined the work of the Logging and Reservoir Delineation groups at the Earth Resources Laboratory. In the first part of this report, we present work related to logging and petrophysics, ...
MIT-Mirage