... at high frequencies decouples and distinguishes water salinity and water saturation. However, wireline pad dielectric tools and late survey times may fall short of a comprehensive saturation analysis of virgin hydrocarbons. Modeling studies show that despite the low operating frequency of Logging-While...

... profile spwla-2022-0012 spwla 63 frequency receiver algorithm reference model reservoir characterization deviation medium property doi conventional sensor das data rd annual logging symposium upstream oil & gas variation inversion acquisition SPWLA 63rd Annual Logging Symposium...

... Abstract Oilfield exploration and production drilling companies commonly use Logging-While-Drilling (LWD) measurements provided by propagation-resistivity tools. These tools emit radio waves at frequencies from 400 kHz to 2 MHz and measure signal attenuation and phase shift between receiver...

... measurements have enhanced the conductivity measurement by dielectric permittivity to a complex-valued conductivity-permittivity pair. At measurement frequencies of about 1 MHz and above the permittivity becomes increasingly less sensitive to water salinity in low clay formations, and so facilitates a more...

... into monopole, dipole, and quadrupole components. Processing results of the sourceless tool using time and frequency semblance are compared to those from a traditional LWD acoustic tool in the same well to demonstrate the viability of the concept. We also demonstrate that in the case of "traditional" LWD...

... not in direct contact with the casing, the measured resistivity will be distorted and often cannot be used. While an AC with high frequency is emitted by an electrode inside conductive casing, the current will pass through the casing and flow along the outer surface of the casing. The current phase shift along...

.... It is also possible to reconstruct these formation layers from the measurements made by a shallower resistivity measurement tool operating at higher frequencies with a shorter transmitter-receiver spacing. Numerical examples will be presented to demonstrate the effectiveness of the proposed ranging...

... drilling drilling data acquisition artificial intelligence drilling measurement upstream oil & gas inversion result inversion wellbore scenario frequency spwla 63 transmitter reservoir lwd mime formation bcu resistivity em inversion spwla-2022-0045 boundary udar tool rd annual...

... annual logging symposium annual logging symposium application th annual logging symposium reservoir log analysis directional drilling frequency inversion result algorithm spwla-2022-0047 wellbore top reservoir Abstract Equinor has played an important role the last decade in testing...

... frequency (HF, 23MHz) NMR 2-D T1-T2 mapping techniques are used for the first time to study fresh drill cuttings to evaluate influences of the drilling mud, and changes of the liquids inside drill cuttings. Results are compared to that of core samples to ensure the validity of the drill cuttings analysis...

... properties. These sensitivities further enable us to characterize anisotropy, drilling features, and logging conditions. From wide-frequency-band dispersions, one can evaluate the cross-dipole dispersions to identify zones with intrinsic anisotropy, stress-induced anisotropy, or fracture-induced anisotropy...

...SPWLA 63rd Annual Logging Symposium, June 10-15, 2022 DOI: 10.30632/SPWLA-2022-0122 SUCCESSFUL IDENTIFICATION OF BYPASSED PAY ZONES AND WET SANDS, IN A MATURE OIL FIELD, USING MULTI-FREQUENCY DIELECTRIC LOGGING AND ADVANCED RADIAL INVERSION METHODS; A CASE STUDY FROM COLOMBIA D. Serrano, D. P...

...-frequency dielectric data has the potential to be implemented in interpreting downhole dielectric logs for continuous Archie parameters m and n, resolving a longstanding challenge in formation evaluation. Archie equation is the foundation of modern petrophysics and parameters m, cementation exponent, and n...

... operate in the megahertz-frequency range, radiating the electromagnetic signal through the non-conductive mud column. A composite processing scheme produces high-resolution impedivity images. The new, ultra-slim borehole-imager tool uses these measurement principles and processing methods. Innovating...

... Abstract It is desirable to evaluate the possibility of developing a deeper dielectric permittivity based S w measurement for various petrophysical applications. The low frequency, (< MHz), resistivity-based method for water saturation ( S w ) evaluation is the desired method...

... logging while drilling structural geology directional drilling frequency trajectory nd annual logging symposium transversal inversion drilling operation spwla 62 module real time system log analysis reservoir simulation upstream oil & gas spwla-2021-0040 reservoir mapping st1 well...

.... To understand the heave effect on LWD image, it was assumed that - The downhole sensor did not suffer from heave effect, thus it was moving with the benchmark velocity of 0.006 m/s to acquire image - Surface pipe depth suffered from DSC residual oscillation with the following residual heave frequencies Figure 4...

... the Doppler effect that is a change in frequency of the sound waves that are reflected on a moving target. A common example is the change in pitch when a vehicle sounding a horn approaches and recedes from an observer. The frequency shift is in direct proportion of the relative velocity of the fluid...

... well logging frequency neural network model log analysis upstream oil & gas dispersion data machine learning neural network spwla 62 artificial intelligence mode-search solver mud slowness dispersion curve slowness nd annual logging symposium spwla-2021-0059 flexural...

... transmitter and receiver run the tool in only one of the tubing strings, if the goal arrays operating at multiples frequencies was designed is solely to inspect corrosion in the outer casings. to accurately estimate the individual wall thicknesses of up to five nested pipes. Data acquired from this tool...