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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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2007)This article explores various aspects of geophysical experimental design (ED) applied to single-borehole DC resistivity. For resistivity problems, an experiment or survey is defined as the set of electrode configurations ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1985)We use the ultrasonic transmission method to measure P-, SH-, and SV-wave velocities for Chelmsford Granite, Chicopee Shale, and Berea Sandstone in different directions up to 1000 bars confining pressure. The velocity ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2001)When a rock sample is pressed by a force, the pressure on the crystal lattice generates an electrical field around the quart grains due to the piezoelectric effect. If a rock is saturated by conductive fluid, the relative ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1996)The electrokinetic effect in a fluid-saturated porous rock is defined as the coupling and conversion between seismic and electric energies. When seismic waves propagate through a fluid-saturated formation and cause a ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1997)The coupling between seismic and electromagnetic waves in a fluid-saturated porous medium is essentially controlled by the electrokinetic effect. The inverse effect of the seismoelectric conversion, the electroseismic ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2004)A scaled multipole acoustic tool is built for laboratory measurements at ultrasonic frequencies in borehole models. The source with four separate transducers generate monopole, dipole, and quadrupole waves by different ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2008)Laboratory experiments are performed with an isotropic Lucite borehole model to measure the acoustic wave fields generated by a monopole source in the borehole. The source not only generates acoustic waves propagating ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1997)Experimental and theoretical studies show that there are two kinds of electromagnetic (EM) fields generated by seismic waves in a fluid-saturated porous medium. First, at an interface where the formation properties are ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2009)Streaming potential across a porous medium is induced by a fluid flow due to an electric double layer between a solid and a fluid. When an acoustic wave propagates through a porous medium, the wave pressure generates a ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2005)Acoustic logging while drilling (LWD) may be complicated because of contamination by waves propagating along the drill collar (the tool waves). In this paper we propose a new method for separating tool waves from the true ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)The ultrasonic logging is performed with dipole transducers in aluminum and lucite borehole models to study the propagation of the flexural waves in a fractured or cased borehole. The experimental results show that the ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2001-05-11)Gaining a detailed understanding of turbidite bed sequences is important for the characterization of sandstone reservoir properties, correlation of well cores, and geological interpretation. Many factors influence the ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)A variety of established and experimental geophysical techniques was used to measure the vertical distribution of fracture permeability in a 229-meter deep borehole penetrating schist and quartz monzonite near Mirror Lake, ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)A variety of established and experimental geophysical techniques was used to measure the vertical distribution of fracture permeability in a 229-meter deep borehole penetrating schist and quartz monzonite near Mirror Lake, ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1994)This paper describes a fast algorithm for estimating formation permeability from Stoneley wave logs. The procedure uses a simplified Biot-Rosenbaum model formulation. The input to the inversion is the Stoneley wave ...
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(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 ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1984)Low-frequency acoustic-energy sources for waveform logging have important applications in: 1) Verifying theoretical calculations; 2) generating tube waves in large-diameter boreholes; and 3) providing larger sample volumes ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2003)A nite difference scheme which includes the effects of attenuation and anisotropy is tested for seismic reflection and borehole acoustic models. The validity of the scheme is established using a 3D homogenous isotropic ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 2006)Fractured reservoir characterization is becoming increasingly important for the petroleum industry. Currentmethods for this task are developed based on effectivemedia theory, which assumes the cracks or fractures in a ...
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(Massachusetts Institute of Technology. Earth Resources Laboratory, 1987)This paper discusses the results of tests carried out on a finite difference formulation of Biot's equations for wave propagation in saturated porous media which vary in range and depth (Stephen, 1987). A technique for ...
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