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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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  • Inversion For Permeability From Stoneley Wave Velocity And Attenuation 
    Cheng, N. Y.; Cheng, C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
    The in situ permeability of a formation is obtained by the inversion of Stoneley wave phase velocity and attenuation, which are evaluated by applying the Extended Prony's method to the array sonic logging data. The Maximum ...
  • Inversion of Shear Wave Anisotropic Parameters in Strongly Anisotropic Formations 
    Tang, Xiaoming; Chi, Shihong; Zhu, Zhenya (Massachusetts Institute of Technology. Earth Resources Laboratory, 2006)
    Deepwater reservoirs use highly deviated wells to reduce cost and enhance hydrocarbon recovery. Due to the strong anisotropic nature of many of the marine sediments, anisotropic seismic imaging and interpretation can improve ...
  • Inversion Of Travel Time For Velocity 
    Willis, M.E. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1983)
    Common source velocities and borehole compensated (BC) estimates have been used to obtain formation velocity estimates from full waveform acoustic logs (Willis and Toksoz, 1982). With both of these methods the ...
  • Inversion of Travel Time for Velocity Using Multi-Spacing Sonic Tools 
    Paternoster, Benoit J. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
    Spatial resolution of sonic logs is greatly affected by the minimum spacing between receivers. Improvements can be made, however, when the spatial sampling of the formation is less than the minimum spacing. This paper ...
  • Kinematic redatuming by two source interferometry 
    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 ...
  • Laboratory Measurements of Attenuation in Rocks at Ultrasonic Frequencies 
    Gonguet, Christophe; Coyner, Karl B.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)
    The spectral ratio method is used to calculate the quality factor (Q) in porous rock samples at ultrasonic frequencies (0.3 - 1.5 MHz). The data were collected using the pulse transmission technique with aluminum used ...
  • Laboratory Studies Of The Acoustic Properties Of Samples From The Salton Sea Scientific Drilling Project And Their Relation To Microstructure And Field Measurements 
    Tarif, P. A.; Wilkens, R. H.; Cheng, C. H.; Paillet, F . L. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1988)
    Compressional and shear wave velocities were measured at confining pressures up to 200 MPa for twelve core samples from the depth interval of 600 to 2600 m in the California State 2-14 borehole. Samples were selected to ...
  • Laboratory Study Of Frequency Dependent Streaming Potentials 
    Reppert, Philip M.; Morgan, F. Dale (Massachusetts Institute of Technology. Earth Resources Laboratory, 1998)
    Frequency dependent streaming potentials were measured on a glass capillary, porous filter, and a sample of Boise sandstone. The pore diameters for these three samples range from 1 millimeter to 34 micrometers. The ...
  • Lithologic Cycles And Paleo Fluid Flow Channels In Old Oceanic Crust From Geophysical Logs At ODP Site 418A 
    Burns, D. R.; Thompson, D. R.; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1990)
    Using some new processing of the multichannel sonic (MCS) log data from Site 418A, the resulting P, S, and Stoneley wave velocity estimates and apparent attenuation were integrated with the natural gamma, spectral gamma, ...
  • A locally conservative variational multiscale method for the simulation of porous media flow with multiscale source term 
    Juanes, Ruben; Dub, Francois-Xavier (Massachusetts Institute of Technology. Earth Resources Laboratory, 2008)
    We present a variational multiscale mixed finite element method for the solution of Darcy flow in porous media, in which both the permeability field and the source term display a multiscale character. The formulation ...
  • Locating point diffractors in layered media by spatial dynamics 
    Poliannikov, Oleg V. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2008-06-16)
    We present a new approach to the problem of detecting point diffractors from active source surface seismic data. We formulate an optimization problem in the configuration space of possible collections of scatterers and ...
  • Location Of Microearthquakes Induced By Hydraulic Fracturing 
    Rodi, William; Li, Yingping; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1993)
    This paper examines the problem of locating microearthquakes induced by hydraulic fracturing using seismic arrival time data. In addition to the use of absolute arrival times measured for individual events, we consider ...
  • Measured radiation patterns of the scale model dipole tool 
    Lu, Rongrong; Rao, Rama V. N.; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2003)
    The sound field of finite dipole acoustic transducers in a steel tool was investigated and their horizontal by measuring their vertical radiation patterns in water at two different frequencies. Measurements were also made ...
  • Measurements Of Shear-Wave Azimuthal Anisotropy From Ultrasonic Dipole Data 
    Tao, Guo; Cheng, Ningya; Zhu, Zhenya; Cheng, C. H. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1995)
    Four methods for analyzing azimuthal anisotropy from dipole logging data are described and attempted in this paper. These techniques are based on the phenomena of flexural wave splitting in anisotropic materials and are ...
  • Measurements Of Shear-Wave Azimuthal Anisotropy With Cross-Dipole Logs 
    Tao, Guo; Cheng, Arthur C. H.; Toksoz, M. N. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1997)
    Three methods for analyzing azimuthal anisotropy from cross-dipole logs are applied to data from the Powder River Basin in Wyoming. These techniques are based on the phenomena of flexural wave splitting in anisotropic ...
  • Meeting Agenda 
    Massachusetts Institute of Technology. Earth Resources Laboratory (Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)
    Meeting agenda for the Earth Resources Laboratory 2007 Industry Consortia Meeting.
  • A Method of Measuring Acoustic Wave Attenuation in the Laboratory 
    Tang, X. M.; Toksoz, M. N.; Tarif, P. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)
    The measurement of attenuation is performed by directly determining the attenuation operator (or the impulse response of the medium) in the time domain. In this way, it is possible to separate the attenuation operator ...
  • Model-guided Geosteering for Horizontal Drilling 
    Song, Fuxian; Toksoz, M. Nafi (Massachusetts Institute of Technology. Earth Resources Laboratory, 2009)
    Horizontal drilling is an important development in the petroleum industry and it relies heavily on guiding the drill bit with the aid of sonic logging, i.e. geosteering. The quality of sonic imaging depends heavily on ...
  • Modeling and Inversion of Self Potential Data 
    Minsley, Burke J. (Massachusetts Institute of Technology. Earth Resources Laboratory, 2007-06)
    This dissertation presents data processing techniques relevant to the acquisition, modeling, and inversion of self-potential data. The primary goal is to facilitate the interpretation of self-potentials in terms of the ...
  • Modeling Borehole Stoneley Wave Propagation Across Permeable In-Situ Fractures 
    Tang, X. M.; Cheng, C. H.; Paillet, F. L. (Massachusetts Institute of Technology. Earth Resources Laboratory, 1991)
    The characterization of hydraulic transmissivity of permeable fracture reservoirs is a very important task in the exploration of water resources and hydrocarbons. Previous studies that model the permeable structure as a ...
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