... Ultra-deep azimuthal resistivity (UDAR) logging technology has been around for the last two decades. However, the real-time inversion of deep-sensing borehole electromagnetic measurements is still an outstanding challenge to yield a reliable image of subsurface electrical resistivity...

... government china government log analysis reservoir characterization assumption prediction geological subdiscipline pore geologist mineral well logging modeling resistivity variation american association oblate pore shear modulus exploration geophysicist applied geoscience crossplot...

... Reservoir resistivity is one of the key parameters in CSEM sensitivity evaluation and interpretation. Reservoir resistivity values can range from 10^0 - 10^5 Ohm m; this very large range of potential values makes it difficult to estimate resistivities with accuracy and extrapolate away from...

... Presented here are three 2D resistivity cross-sections of the axial fault region within the New Madrid Seismic Zone (NMSZ), obtained using broadband magnetotelluric (MT) equipment, which surpasses the resolution of previous long period MT equipment. By integrating the seismicity distribution...

... Numerous studies have demonstrated the sensitivity of timelapse electrical resistivity measurements to a large range of subsurface processes of interest. This, combined with the ease of readily automatable repeat data collection, has made timelapse electrical resistivity monitoring (4D ERT...

... Time-lapse monitoring of the resistivity changes in the salinized Bookpurnong Irrigation District of South Australia has been reported. Gramian constraint is imposed on the resistivity models of the time-domain and frequency-domain airborne (AEM) data with a 2-year time interval. Without...

... The marine controlled-source electromagnetic (MCSEM) transmitter has been an effective tool for identifying various electrically resistive structures. This study proposes a supercapacitor (SC) based energy storage system that can produce high pulsed power signals with a constant current for 10...

... velocity sand dunes are subject to interpretation pitfalls due to the time delays affecting the interpretation of the target reservoir levels. The transient EM method is highly versatile and proven to have good sensitivity to the low resistivity substratum, base of sand (BoS). Once the BoS depth is mapped...

...- Frequency Electromagnetic), well and seismic joint modeling and the rhythm changes of the resistivity for volcanic reservoir interpretation are studied, which effectively improved the depth resolution and the recognition ability of the reservoir. The research and application in LH area of Bohai Bay Basin...

... Inspired by the work of Dr. Rosemary, this study presents and overview of nuclear magnetic resonance (NMR) rock physics within the field of near surface geophysics. well logging upstream oil & gas knight log analysis water resource research keating resonance nmr resistivity...

... valley energy 10 operating inc inversion metals & mining figure international nevada resistivity Reservoir characterization of a lithium-bearing super-brine complex using seismic inversion and magnetotellurics Colton Dudley*, Timothy Putnam, Karen Loomis, and Vincent Ramirez, 3PL Operating...

... archie conductivity experiment log analysis saturation exploration geophysicist well logging shrinkage calculation applied geoscience equation evaporation energy 10 resistivity estimation correction upstream oil & gas society reservoir characterization porosity american...

... structural geology log analysis geophysics reservoir characterization prediction estimation upstream oil & gas well logging international american association resistivity castagna facies classification abstract expanded abstract artificial intelligence machine learning...

... association metals & mining resistivity frequency basin energy 10 lithium toolkit society information brine applied geoscience amt mt investigation An effective multiphysics toolkit for Lithium prospecting: from geophysics to the static reservoir model in Pozuelos salt flat, Argentina. Ana...

... Electromagnetic (EM) geophysical techniques offer the possibility of monitoring subsurface CO 2 in saline reservoirs due to the fact that CO 2 has high electrical resistivity compared to the surrounding geologic materials. In this paper we first discuss the underlying physics of two different...

... from a tight-oil reservoir to obtain the rock mineralogy and pore structure by X-ray diffraction and casting thin sections. Then, ultrasonic and resistivity experiments are performed under different confining pressures to analyze the effects of pores, microcracks and mineralogy on the AE properties. We...

... upstream oil & gas reservoir characterization north sea well logging young utsira formation resistivity american association indicator separation society energy 10 log analysis co 2 exploration geophysicist international neutron porosity sleipner co 2 applied geoscience...

... results by DL inversion. Thus, we suggested the maximum depth of investigation (MDI) proposed by Spies (1989) as the reliable depth of prediction results. Through the analysis on the correlation between MDI and predicted resistivities, we could confirm that the predicted resistivity values with depth...

... We propose a joint inversion method for magnetotelluric (MT) and seismic travel time data based on the intelligent interpretation of resistivity and velocity with deep learning. A deep neural network for joint interpretation, namely IntNet, is seamlessly inserted into the inversion process...

... large areas by traditional drilling methods is expensive and does not provide continuous coverage. There are several geophysical methods, including electrical resistivity tomography (ERT), Seismic Refraction Tomography (SRT) and Multi-channel Analysis of Surface Waves (MASW), that can efficiently map...