.... In a proof of concept, the proposed method was applied to the noise model of a UDAR tool with 96 channels, consisting of eight types of measurements with six frequencies and two receivers. Scenarios were generated using a formation distribution designed to cover most cases that would be encountered...

.... Often, it leads to gaps in shear data delivery. The introduction of Slowness-Frequency-Coherence (SFC)-based parameterized inversion technique offers a more robust and comprehensive assessment of shear properties across varying formations. It agrees with refracted shear, where applicable. To enhance...

... them in a comparison with wireline dielectric measurements conducted in much higher frequencies. In this study, several methods are evaluated in obtaining dielectric permittivity from LWD EM measurements of 400 kHz and 2 MHz frequencies: Method 1 is an analytical Resistivity Based Approximation (RBA...

... mlaqi-dd modeling waveform interpretation liang spwla 65 application university spwla annual logging symposium frequency SPWLA 65th Annual Logging Symposium, May 18-22, 2024 DOI: 10.30632/SPWLA-2024-0078 REAL-TIME LWD SONIC PROCESSING ENABLED BY DATA DRIVEN MACHINE LEARNING Lin Liang, Ting...

... the flow path from the reservoir towards the well, together with the active reservoir units. Advanced Noise Logging (ANL, operating in a wide frequency range) can be an elegant solution to overcome these limitations. This paper firstly shows how ANL is the key to address reliability of such ANL-based...

... wavelength lines and diode noise cancellation to change the antenna quality factor in different states. Although this scheme quickly releases the energy of the antenna, at low frequencies, quarter wavelength lines occupy a large volume, which is not suitable for nuclear magnetic resonance logging instruments...

... across six frequencies 2 kHz, 6 kHz, 12 kHz, 24 kHz, 48 kHz, and 96 kHz the system optimizes the signal-to-noise ratio (SNR) and sensitivity of the measurements for a wide range of transmitter-receiver spacings and formation resistivity profiles. Depending on the formation resistivity and the transmitter...

... instrument and the open hole logs, but with much finer resolution. In high resistivity intervals we observed, as expected, a difference due to resistivity frequency dispersion. At the other end of the scale, for formations below 1.5 ohm-m, the device in its present design lost the ability to provide accurate...

... of an axial pair of receivers (Rx) and axial pair of transmitters (Tx) at sub or lower megahertz (MHz) frequencies. Variations and refinements of PR measurements over the years include increasing the range and the number of frequencies as well as the number of Tx, and the tuning of the Rx spacing and Tx...

... casing strings and through tubing is even more difficult due to the presence of fluid within the annulus and multiple wave modes propagating within the casing strings themselves. With the advent of a combined ultrasonic-sonic frequency evaluation of dual-strings cement, there has been surprising results...

... for variations observed in the Dean Stark measurements. sedimentary rock geologist structural geology well logging geological subdiscipline salt tectonics log analysis th annual logging symposium cutoff petrobras frequency spwla 65 integrating statistically significant laboratory information...

... are larger than the conventional TEM data in the time domain and the frequency domain. Moreover, the energy data has a similar capability as the conventional TEM data to detect the formation boundary ahead of the drill bit. The depth of detection of the tool of the length between the transmitter...

... frequency permeability receiver eccentricity conductivity ABSTRACT Well completions typically encompass a series of multiple barriers which are crucial for supporting both production activities and protecting aquifers from contaminants. Monitoring the integrity of these completions is pivotal...

... to the formation and located on a rotating drill string in a Logging While Drilling (LWD) application to obtain an image of the bulk density of the formation surrounding the borehole (Amer, Al Riyami, & Rowland, 2015). necessitates the use of higher operating frequencies. However, at these higher frequencies...

... permeability carbonate rock flow in porous media fluid dynamics mineral log analysis frequency sedimentary rock geology well logging polarization spwla-2024-0137 th annual logging symposium sergipe sub-basin spwla 65 geologist rock type reservoir characterization resistivity...

.... The complex resistivity spectra of the rock contain more physical information than the single frequency resistivity, and are sensitive to water content. The electromagnetic logging could provide effective complex resistivity curves. However, the saturation models based on complex resistivity are fewer...

... application artificial intelligence data mining machine learning annual logging symposium effectiveness characteristic rock type reservoir surveillance production monitoring evaluation fracture china national logging corporation research institute frequency SPWLA 65th Annual Logging Symposium...

... geology log analysis polarization rock type reservoir characterization sedimentary rock well logging dielectric permittivity interfacial polarization geologist permittivity concentration brine heidari interpretation doi ghz th annual logging symposium frequency annual logging...

... upstream oil & gas geologist sedimentary rock structural geology mudrock clastic rock rock type well logging th annual logging symposium frequency application laboratory nmr technique united states government log analysis spwla-2023-0111 nmr experiment mapping mudstone...

... in the frequency domain. The outcomes of numerical simulations included real and imaginary parts of complex dielectric permittivity as a function of frequency in the range of 1 Hz to 20 MHz. Results showed high dependence of the relative dielectric constant on the fracture surface roughness at low frequencies up...