... logging waveform data formation acoustic signal amplitude stc correlogram log analysis Tang experiment spwla 60 transmitter correlogram SPWLA 60th Annual Logging Symposium, June 17-19, 2019 DOI: 10.30632/T60ALS-2019_TTTT 1 A NEW THROUGH-CASING ACOUSTIC LOGGING TOOL USING DUAL-SOURCE...

... and waveform mode conversion (especially when monopole energy is used). Images can be blurred by ringing that is inherent in the waveform data, and feature orientation can often be uncertain because of the waveform propagation patterns and lack of azimuthal sensitivity of the measurement. Recent developments...

... of inline and crossline dipole waveforms. Also, time windowing of the waveform data is not required, as the processing is done in the frequency domain using the flexural dispersion over the full bandwidth of the data. The fast shear orientation is obtained by minimizing an objective function defined...

... acoustic energy output than previous sources and whose polarity and frequency is fully selectable, and new dispersion tracking methods for minimising the uncertainty of slow shear measurements. Digitisation, Recording time, and Memory Because LWD tools do not currently transmit full waveform data...

... machine learning well logging acoustic processing drilling measurement Artificial Intelligence Upstream Oil & Gas log analysis Speech Recognition accuracy slowness curve Symposium velocity error acoustic measurement velocity measurement panel 2 waveform data slowness error...

... that the above procedure yields reliable compressional wave slowness for the unconsolidated slow formations. Upstream Oil & Gas dispersion data frequency range frequency waveform data unconsolidated slow formation dispersion effect spwla 46 well logging modeling slow formation dispersion...

... of acquiring multiple sets of waveform data, improving the S/N ratio through proven processing techniques, simultaneously minimizing tool decentralization effects. Formation slowness values and associated quality control indicators are derived downhole while drilling and pulsed to the surface. Additionally...

...SPWLA 42 "d Annual Logging Symposium, June 17-20, 2001 PHASE VELOCITY PROCESSING FOR ACOUSTIC LOGGING-WHILE-DRILLING FULL WAVEFORM DATA Marek Kozak, Magnetic Pulse Inc., Paul Boonen and Doug Seifert, PathFinder Energy Services ABSTRACT This paper presents the principle and demonstrates...

... ABSTRACT This paper describes a signal processing technique that enhances the resolution of formation slowness from the waveform data of an array acoustic tool. The enhanced resolution allows us to detect formation features at a scale from the conventional 3.5 ft, the array aperture, to 0.5 ft...

... data. log analysis waveform data wireline slowness transmitter slowness well logging slowness computed Houston drilling noise spectra strength semblance compressional slowness spwla 36th Upstream Oil & Gas transducer standoff receiver Symposium noise waveform receiver...

... information are used when available. Currently, the computer "learning" procedure takes a few days once the geologic information is developed. After that, waveform data for a new well in the same general area can be processed to produce the desired geologic information within a few hours after logging...