... a sophisticated workflow for processing the urban DAS data, including bandpass filtering, removing bad traces, amplitude scaling, and local F-K filtering (thresholding and sector). Considering the signal leakage after these processing steps, we propose to apply a recently developed signal-retrieving approach...

... multiplicative noise’s phase and amplitude characteristics across time and frequency domains by extending the previous analysis to broadband data. Theoretical analysis and numerical experiments show that while stacking-based processing can effectively neutralize additive noise, it struggles against...

... and 3D neural networks (2D and 3D GAP) were developed to clean seismic gathers along offset and time/depth directions. However, the issues of low-amplitude and steep-dip washout persist and make the result less reliable. To mitigate these issues, we use AVC (amplitude-based scaling) and gather stack...

... characterization. However, one should first understand the meaning of FDR amplitude in terms of elastic properties. In theory, FDR, which is derived from the FWI velocity, should be a derivative response of velocity, and a P-wave sonic log should be used to calibrate FDR before interpretation. While elastic FWI...

... reservoir characterization seismic record iteration workflow seismic data processing module geology noise applied geoscience & energy 10 sequence frequency geologist suppression amplitude american association attenuation sequence Self-parametrizing seismic data processing modules...

... when elastic effects are small, obtaining reliable amplitudes from crosswell seismic is difficult. We apply different imaging algorithms to real and synthetic crosswell seismic data, and show that generalized radon transform (GRT) migration provides the best imaging, with the highest resolution...

... 3D seismic interpretation. The modelling of our equatorial margin dataset shows that high pore-pressure settings cause amplitude reduction and potentially a shift between class-I and class-II AVO. In our 3D seismic interpretation, we attribute amplitude dimming to differential diagenesis, increasing...

... association thickness amplitude variation amplitude time loop thickness loop thickness Seismic signal considerations for fast reservoir characterization Folkert Hindriks*, Shell Global Solutions International SUMMARY Seismic reservoir characterization is typically limited by the bandwidth...

... the amplitudes of the primary reflections are compensated for two-way transmission losses. Following the application of the T-MME scheme, the data exhibits an enhanced signal-to-noise ratio, consequently facilitating a clearer depiction of the subsurface within migration images. Typically, the Marchenko multiple...

... be considered a type of self-simultaneous sourcing, where a source interferes with itself. Self-simultaneous sourcing also provides an opportunity to collect denser data than would be possible with conventional acquisition by decreasing the source interval. While this produces high amplitude signals on top...

... time and cost. In Ocean Bottom Node (OBN) data, the direct arrival is the highest amplitude event and the easiest to identify with confidence in the seismic data. The proposed seeded inversion deblending will combine inversion deblending along with a signal model with high confidence to achieve better...

... acoustic media, so it doesn’t guarantee accurate transformation in complex heterogeneous viscoelastic anisotropic media. We adhere to a straightforward filter for compensating amplitude, incorporating offsets and phase shifts, and adjusting the stretching factors to rescale amplitude differences across...

... case study configuration discrepancy mexico amplitude Improving 4D signal using advanced 4D workflows: A case study from Gulf of Mexico Vincent Durussel, Jianxiong Chen, Abhishek Raj, Bartosz Szydlik, Markos Sourial, Joseph Rafik Hanna, Gabriel Mattei, and Leslie Bartsch Summary This abstract...

... to visualize the signal changes. Our observations show a broadband frequency response at the fiber breakage location in the perforation zone before the fiber broke, which did not decay in amplitude like other locations after proppant injection. Through the data value histogram plot, we interpret the broadband...

... of the model update or the gradient in FWI. We address this concern using delay-time common image gathers (DTCIGs). Our analysis consists of the following processes: We first compute DTCIGs using the inverted model and its predicted data. Then we pick the delay time and amplitude at each image point to create...

... imaging fwi inversion american association structural geology case study full waveform inversion amplitude fwi velocity model trinidad reservoir imaging fdr frequency expanded abstract Improving Reservoir Imaging with FWI: A case study in the Columbus Basin, Offshore Trinidad Xiaolei Song...

... volumes are often acquired at different times with different hardware, acquisition geometries, and exploration objectives. If insufficient care is taken, significant differences in the amplitude and spectra of the merged survey components can pose challenges when used as input for machine learning...

... We evaluated various shallow Miocene amplitude anomalies on 11 Hz full-stack acoustic Full Waveform Inversion (FWI) derived reflectivity (FDR) data from the Deepwater Gulf of Mexico. Based on seismic well ties, fluid substitution and 2D seismic forward modeling, we concluded that five out...

... stratal cubes. Because seismic travel time is different for the injection layer, the object cubes of two data must be int-erpolated, and make them having the same samples. The th-ird step is amplitude matching processing. Using the top su-rface amplitude as a reference, the surface amplitude of twodata...

... simulations. Firstly, different models are made for 2D forward modeling, and many records are obtained. Then we extracted amplitude, frequency attribute, we built a new composite attribute from RMS amplitude and the sum of positive (negative) amplitudes to predict the sandstone thickness. The method is proved...