... ambient seismic vibration mars hobiger inversion vibration application society applied geoscience upstream oil & gas international algorithm exploration geophysicist ambient vibration reservoir characterization ellipticity giardini american association underground cornou...

... ellipticity modulus variation upstream oil & gas seg seg international exposition incident angle azimuth variation ambiguity estimation ellipse reservoir characterization long axis direction fracture orientation estimation seismic data Downton , J. , and H. Russell , 2011...

... detectors can offer a useful link between theoretical models and real field experiments. magnitude particle motion interface upstream oil & gas experiment displacement particle displacement laser doppler vibrometer needle hydrophone ellipticity surface-wave impedance frequency...

... first calculate the seismic amplitude attributes of the partial azimuthal stacks that contain the anisotropy information. These azimuth-dependent attributes are then fitted to an ellipse, e assuming that the aligned fractures induce an elliptical anisotropy. The ellipticity is proportional to fracture...

... surface wave polygon velocity map main menu characterization reservoir characterization correlation investigation inverse ellipticity upstream oil & gas ellipticity spatial variation mitigation static map survey area surface-wave velocity variability polarization group...

... reservoir characterization anisotropy anisotropy coefficient resistivity effective resistivity rock formation upstream oil & gas ellipticity multiphase composite ellipsoidal grain tensor frequency ellipsoidal inclusion rotational ellipsoid effective-medium conductivity Anisotropy...

... the migration operator through a range of velocity ellipticities that represent the orientation of the major axis of the ellipse and the ratio of the major and minor axes of the ellipse. The coherency of each migration is measured and the migration with the highest coherency indicates the optimum azimuthal...

... ABSTRACT No preview is available for this paper. demartini-shell exploration borehole ellipticity upstream oil & gas strike azimuth shear-wave birefringence th annual meeting hatchell anisotropy production technology co well logging natural fracture birefringence...

... encík 1995) to find the limits. Fig.3 shows for a 20 degrees dip, 15% TIV anisotropy (ellipticity=0.19) that the four components of eq.6 have clearly an ordered relationship. Note that the scale on the vertical axis is logarithmic. 1867 Anisotropy versus structure For all the models the source location...

.... The regions that showed the largest azimuthal velocity variation were those considered to be under high tectonic stress. The inferred fast direction corresponded to the region s maximum compressive stress. The correction for azimuthal velocity variation requires the use of an elliptical approximation medium...

... ellipticity macbeth data matrix reservoir characterization 256 2Channel wave processing FIGURE 2. Six component data matrix for seven different sets of source activations, the first four being at a different lateral position in the coal-seam from the last group of three. A four-component subset...

... ABSTRACT No preview is available for this paper. tool orientation flexural mode log analysis angular misalignment frequency anisotropy independent tool orientation borehole ellipticity phase velocity upstream oil & gas reservoir characterization orientation receiver...

... component covariance matrix reservoir characterization ellipticity wavetype implementation weighting function Seismic Polarization Analysis and Applications Azik I. Perelberg* and Scott C. Hornbostel, Exxon Production Research SN1.5 SUMMARY Multicomponent seismic recording contains a wealth...

... ellipticity frequency investigation magnetic field new instrument inversion program New Instrument and Inversion Program for Near-Surface Mapping: High-frequency EM Sounding and Profiling in the Frequency Range 300 kHz to 30 MHz Duff Stewart: Waiter L. Anderson, Thomas I! Grover, and Victor I;: Labson...

... ABSTRACT No preview is available for this paper. feed forward pattern feature neural network pattern recognition ellipticity em ellipticity image ellipticity pattern computer system artificial intelligence em ellipticity pattern frequency input vector network topology em...

... ABSTRACT No preview is available for this paper. complex trace analysis reservoir characterization rueil-malmaison resolution amplitude ellipsoid trajectory instantaneous parameter plane polarization variation upstream oil & gas instantaneous ellipticity instantaneous...

... ABSTRACT No preview is available for this paper. ellipticity degree phase difference motion record particle motion record groundroll interference phase difference refraction upstream oil & gas radial component new tool particle motion record rectilinearity reservoir...

... ABSTRACT No preview is available for this paper. regional conductor instrument ellipticity conductor reservoir characterization dip angle mining 165 local conductor regional conductor only configuration ellipticity curve conductance variation variation detection frequency...

... ABSTRACT No preview is available for this paper. information rayleigh wave phase velocity ellipticity reservoir characterization iteration deviate shear velocity inversion receiver subsurface model reconstruction technique shear-wave velocity quantity amplitude subsurface...

... ABSTRACT No preview is available for this paper. resistivity geological survey integral equation polarization current true resistivity equation frequency ellipticity interface cavity primary field ground conductivity jointed formation us government apparent resistivity...