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:

  • House, Nancy J.; Willis, Mark E.; Burns, Daniel R.; Lu, Rongrong; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)
    Tight gas reservoirs are problematic to produce, often requiring multiple stages of hydraulic fracturing in order to create connected pathways through which hydrocarbons may flow. In this paper, we propose a new methodology ...
  • Shemeta, Julie; House, Nancy J.; Willis, Mark E.; Willis, Kent M.; Burns, Daniel R. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2009)
    Natural and induced fractures provide the only means of production in tight gas sand reservoirs. The objective of this work is to locate and characterize natural and induced fractures from the analysis of scattered waves ...
  • Vetri, Laura; Willis, Mark E.; Rao, Rama V. N.; Burns, Daniel R.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
    Discrete, vertically aligned fracture systems impart one or more notches in the spectral ratios of stacked reflected seismic traces. This apparent attenuation is due to the azimuth dependant scattering introduced by the ...
  • Paillet, Frederick L. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1983)
    Previously formulated scaling laws relating acoustic waveforms in boreholes to frequency, tool size and borehole diameter were investigated by repeated logging of the same test interval with different frequencies, and ...
  • Krasovec, Mary L.; Burns, Daniel R.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1999)
    Seismic data from the Niger Delta is used to test processing sequences involved in prestack and poststack amplitude and frequency analysis of marine seismic data. Water bottom reverberations are found to present a ...
  • Reppert, Phillip M.; Morgan, Frank Dale (Massachusetts Institute of Technology. Earth Resources Laboratory, 2002)
    Electro-osmosis, the movement of a fluid with respect to solid wall when an electric field is applied tangentially to the solid wall, has been studied for many years[superscript 1]. Frequency-dependent electro-osmosis ...
  • Reppert, Phillip M.; Morgan, Frank Dale; Lesmes, David P.; Jouniaux, Laurence (Massachusetts Institute of Technology. Earth Resources Laboratory, 2002)
    An experimental apparatus and data acquisition system was constructed to measure the streaming potential coupling coefficients as a function of frequency. The purpose of the experiments was to measure, for the first ...
  • 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 ...
  • Ajo-Franklin, Jonathan B. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)
    Frequency-domain finite-difference (FDFD) modeling offers several advantages over traditional timedomain methods when simulating seismic wave propagation, including a convenient formulation within the context of wavefield ...
  • Toksoz, M. N.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
    This report contains results from the third year of the Full Waveform Acoustic Logging Consortium and rock physics studies at M.J.T. This year marks the completion of the first phase of the project which has been directed ...
  • Toksoz, M. Nafi; Cheng, C. H.; Garcia, Gilles (Massachusetts Institute of Technology. Earth Resources Laboratory, 1984)
    We have now completed the second year of the Full Waveform Acoustic Logging Consortium. During these two years, we have developed a good understanding of seismic wave propagation in a borehole through both theoretical ...
  • Garcia, G. H.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
    This paper presents the full waveform acoustic log inversion problem for a multisource - multireceiver tool logging a cylindrical fluid-filled borehole. The problem is formulated in the frequency-depth domain. A priori ...
  • Song, Fuxian; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2011)
    Downhole microseismics has gained increasing popularity in recent years as a way to characterize hydraulic fracturing and to estimate in-situ stress state. Conventional approaches only utilize part of the information ...
  • Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)
    We present an indirect method of determining shear wave velocities from full waveform acoustic logs based on the inversion of the spectral ratio of the P-wave trains at two source-receiver separations. This method ...
  • Bouchon, Michel; Schmitt, Denis (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
    We present a boundary integral equation formulation for the problem of wave propagation in a borehole of irregular cross-section. The method consists in representing the wave field diffracted at the borehole-rock interface ...
  • Grandi, Samantha; Rao, Rama V. N.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2002)
    In this paper, we present a modelling of the in-situ stress state associated with the severe hole enlargement of a wellbore. Geomechanical information is relevant to assure wellbore stability, i.e., to prevent damages ...
  • Brown, Stephen (Massachusetts Institute of Technology. Earth Resources Laboratory, 2011)
    4-D seismic techniques rely on measuring changes in velocity over time in order to detect changes during activities such as CO[subscript 2] flooding and storage in a reservoir. Wang et al. [1998] detail a laboratory study ...
  • Paillet, F . L. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
    A full suite of geophysical logs, including nuclear, electric, acoustic transit-time, acoustic waveform, and acoustic televiewer logs, and high-resolution flowmeter measurements have been used to investigate the lithologic ...
  • Kane, Jonathan; Al-Moqbel, Abdulrahman; Rodi, William; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2002)
    We present a method for combining seismic deconvolution and geostatistical interpolation. Both problems are posed as a single joint inverse problem in the maximum likelihood framework. Joint inversion allows for well ...
  • Kane, Jonathan; Rodi, William; Herrmann, Felix; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1999)
    Information about reservoir properties usually comes from two sources: seismic data and well logs. The former provide an indirect, low resolution image of rock velocity and density. The latter provide direct, high ...
MIT-Mirage