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Browsing Earth Resources Laboratory Industry Consortia Technical Reports by Issue Date

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Browsing Earth Resources Laboratory Industry Consortia Technical Reports by Issue Date

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  • Concha, Diego Alvaro Pinero (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010-06)
    We applied the double-difference tomography method to image the P and S-wave velocity structure of the European Hot Dry Rock geothermal reservoir (also known as the Soultz Enhanced Geothermal System) at Soultz-sous-Forets, ...
  • Willis, Mark E.; Poliannikov, Oleg V. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010-04-26)
    Seismic interferometry is a method of obtaining a virtual shot gather from a collection of physical shot gathers. The set of traces corresponding to two common receiver gathers from many physical shots is used to synthesize ...
  • Poliannikov, Oleg V. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010-04-26)
    Interferometry is a method of redatuming physical sources to receiver locations. Under idealized assumptions stacking the cross correlogram of the two common receiver gathers yields a bandlimited Green's function between ...
  • Chen, C. -W.; Rondenay, Stephane; Miller, D. E.; Djikpesse, H. A. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010-01-01)
    We investigate the applicability of an array-conditioned deconvolution technique, developed for analyzing borehole seismic exploration data, to teleseismic receiver functions and data preprocessing steps for scattered ...
  • Ay, Erkan; Song, Fuxian; Kuleli, Huseyin Sadi; Toksoz, M. Nafi; Zhang, Haijiang (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    The ability to detect small microearthquakes and identify their P and S phase arrivals is a key issue in hydrofracture downhole monitoring because of the low signal-to-noise ratios. We apply an array-based waveform ...
  • Chen, Tianrun; Wang, Bing; Zhu, Zhenya; Toksoz, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    Most acoustic logging while drilling (LWD) tools generate a single pure borehole mode (e.g., dipole or quadrupole) to estimate the formation shear velocity. We propose an approach where multipole modes are generated ...
  • Li, Junlun; Zhang, Haijiang; Kuleli, Huseyin Sadi; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    We present a new method using high frequency full waveform information to determine the focal mechanisms of small, local earthquakes monitored by a sparse surface network. During the waveform inversion, we maximize both ...
  • 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 ...
  • Malcolm, Alison E. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    The interaction of acoustic and electromagnetic waves with periodic structures plays an important role in a wide range of problems of scientific and technological interest. This contribution focuses upon the robust and ...
  • Verdel, Arie; Gouedard, Pierre; Yao, Huajian; van der Hilst, Robert D. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    Surface waves are of increasing interest in seismic prospecting. Traveltime tomography based on dispersion measurements is often used to process surface-wave data, but it has limitations due to the a priori information ...
  • Poliannikov, Oleg V.; Malcolm, Alison E. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    In many applications, sequestering CO[subscript 2] underground for example, determining whether or not the medium has changed is of primary importance, with secondary goals of locating and quantifying that change. We ...
  • 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 ...
  • Li, Junlun; Zhang, Yang; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    In this paper, we present a method to model acoustic wave propagation in the frequencydomain in the presence of free surface topography using the embedded boundary method. The advantage of this method is to solve for the ...
  • Malcolm, Alison E.; de Hoop, Maarten V. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    It is well known that reverse-time migration is capable of correctly imaging multiply scattered energy. To do this, one of the interfaces from which the waves scatter must be included in the background velocity model. ...
  • Zhang, Yang; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    Current imaging technique such as micro X-ray CT can provide us detailed 3D micro-structures of porous rocks that can be used in numerical simulation so as to predict elastic properties of rocks saturated with different ...
  • Song, Fuxian; Toksoz, M. Nafi; Li, Junlun (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    Downhole microseismics has gained in popularity in recent years as a way to characterize hydraulic fracturing sources and to estimate in-situ stress state. Conventional approaches only utilize part of the information ...
  • 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 ...
  • Wang, Ping; Chen, Tianrun; Fehler, Michael; Brown, Stephen; Zhang, Yang; Fang, Xinding; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2010)
    In this paper, we model the acoustic scattering from a two dimensional fracture that is simulated by two different physical models. We calculate the scattering from the fractures with different properties based on these ...
  • Bleibinhaus, Florian; Rondenay, Stephane (Massachusetts Institute of Technology. Earth Resources Laboratory, 2009-12-17)
    In full-waveform inversion of seismic body waves, often the free surface is ignored on grounds of computational efficiency. Asynthetic study was performed to investigate the effects of this simplification. In terms of ...
  • Poliannikov, Oleg V.; Willis, Mark E.; Mashele, Bongani Jabulani (Massachusetts Institute of Technology. Earth Resources Laboratory, 2009-05-31)
    Seismic interferometry is a method of obtaining a virtual shot gather from a collection of actual shot gathers. The set of traces corresponding to multiple actual shots recorded at two receivers is used to synthesize a ...
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