... Understanding the influence of shale on dielectric permittivity measurements is crucial for effective geophysical exploration and reservoir characterization. The dielectric permittivity of shale, influenced by factors such as mineral composition, porosity, and fluid content, is a significant...

... waveform inversion exploration geophysicist iteration fwi applied geoscience wavefield permittivity energy 10 full-waveform inversion Obtaining a reasonable subsurface model both qualitatively and quantitatively from recorded GPR data has always been a challenge. Traditional methods...

... upstream oil & gas reservoir characterization ogunbo exploration geophysicist reserves evaluation inversion gramian constraint landmine resource in place estimate estimates of resource in place constraint permittivity applied geoscience forensic gpr anti-human landmine...

... both EM and acoustic properties are related to the porosity, saturation, and mineral composition of the rock, we develop rock physics templates to predict P-wave velocity (Vp), S-wave velocity (Vs), and permittivity from porosity and saturation. In this work, we first estimate the IF value...

... electromagnetic velocities values through the time travel curves in which the direct ground and refracted ground waves from the picks previously made in the shot gathers, are seen. These velocities are inversely proportional to the electrical permittivity, which is an intrinsic properties of materials. Oil has...

...: Poster international petroleum technology conference subsurface transmission line em signal seg international exposition subsurface signal attenuation seal conductivity upstream oil & gas conductive media reservoir characterization simulation permittivity propagation mhz em signal...

... resistivity permittivity complex reservoir maturity reservoir characterization upstream oil & gas alignment bedding conductivity marcellus shale organic matter structural geology Clennell , M. B. , M. Josh , L. Esteban , C. Delle Piane , and D. N. Dewhurst...

... ABSTRACT Electrical methods are proven tools for successfully imaging the subsurface (Jol, 2008; Knight, 2001). Ground penetrating radar (GPR) is sensitive to electrical permittivity through reflectivity and electrical conductivity through attenuation. Electrical resistivity tomography (ER...

... ABSTRACT Geophysical method can be regarded as an indirect evaluation tool which can infer the intrinsic geological properties of the target based on the recorded data which is caused by the difference of physical parameters (velocity, density, permittivity, conductivity and so on). In fact...

... of permittivity. To test this method, we did a case study at Mudu city site in Suzhou, China. The inversion result provides a clear image of the channel of the ancient city's moat. It is shown that this method is effective and feasible for detection of paleochannels. Presentation Date: Monday, September 25, 2017...

...-derived saturation estimates. The conventional subsurface EM measurement interpretation methods generate inaccurate saturation estimates in clay- and pyrite-bearing shales primarily because multifrequency conductivity and permittivity logs are interpreted separately using empirical models at a single...

... for inverting GPR data using two freely available well-known software packages, gprMax for forward modeling of radar wave propagation and PEST for the inversion procedure. The combination of these packages enables retrieval of target location, dimensions, and constraints on the soil permittivity structure...

... a strong dependence of both real and imaginary dielectric permittivity on specific surface area. In this borehole, a negative correlation between the dielectric response of shale pastes and P-wave velocity of intact preserved shale samples was observed, hinting at mineralogical and associated hydration...

... Summary Dense Non-Aqueous Phase Liquids (DNAPLs) induce variation in electric permittivity and resistivity. To better understand the effect of DNAPL on electrical permittivity and resistivity in a water saturated medium, we collected electrical resistivity, induced polarization and georadar...

... to the medium frequency range (100 kHz to 10 MHz). However, the characteristics of EM fields in this range are more complicated. Both radiation and induction exist, and both conductivity and dielectric permittivity need to be considered (Wilkinson, 2005). A number of attempts have been made to model RIM data...

... zero conductivity and a relative dielectric permittivity of 9. The radiation pattern is a close approximation of that measured for physical antennas in TE mode (field perpendicular to image plane). The radiation pattern varies substantially as a function of take-off angle and distance from the source...

... recently shown promise for improving studies of gas storage and release in peatlands. We investigated the relationship between dielectric permittivity and volumetric water content in organic peat soil using ground-penetrating radar. We developed a novel approach for controlling water content using...

... high frequency derivative seg seg denver 2010 frequency hsse standard upstream oil & gas us government thickness remediation permittivity layer 2 conductivity sensitivity reservoir characterization land reclamation partial derivative geological survey vertical magnetic field...

... depth model of permittivity. We construct a 2D image of permittivity from a GPR survey taken near the Kuparuk River, Alaska, and interpret the lateral transition from a dry channel to a peat layer along the acquisition line. INTRODUCTION The study of low frequency guided waves generated by large...

... algorithm tarantola seg seg denver 2010 borehole posteriori probability density artificial intelligence standard deviation geophysics permittivity Monte Carlo full waveform inversion of tomographic crosshole data using complex geostatistical a priori information Knud S. Cordua*, Thomas M. Hansen...