Fast and efficient structure-oriented preconditioning with on-the-fly dip estimation

Rodrigo Felicio Fuck, Lorenzo Casasanta

International Meeting for Applied Geoscience and Energy (IMAGE)

... (Tomasi and Manduchi, 1998). Furthermore, the guided filter is also self-adjoint, a key property when using it to precondition inverse problems. where...

Noise Attenuation in Common Receiver Gather to Enhance S/N Ratio in Seismic Data

Dara Felisia A, Triswan Mardani Ade Surya, R.B.Fauzan Irshadibima, Firman Syaifuddin

Indonesian Petroleum Association

...* ABSTRACT One of the main objective of seismic processing is to remove noise in seismic data to get better subsurface image. This filtering process...

Application of improved shearlet transform algorithm in noise filtering of complex fault block oilfield in eastern Bohai Sea

Yu Xiong, Cai Li, Yongqiang Yao, Shaoxuan Li, Lei Gao

International Meeting for Applied Geoscience and Energy (IMAGE)

... shearlet transform adaptive threshold seismic random noise filtering algorithm can remove random noise more effectively, improve the main frequency...

Deblurring migration images with point spread function filter

Cewen Liu, Nanxun Dai, Wei Wu, Xiaofeng Wu, Mingjie Guo, Haohuan Fu

International Meeting for Applied Geoscience and Energy (IMAGE)

... not compute the Hessian inverse, the migration image we retrieved is blurred, and we could remove the blurring effect by applying the Hessian inverse...

Abstract: Different Flavors of the Marchenko-Equation-Based Internal Multiple Elimination Methods: the Trade-off between Fidelity, Computational Cost and Ease of Use; #91204 (2023)

Marcin Dukalski, Chris Reinicke

Search and Discovery.com

... with the inverse transmission operator can remove source- and receiver-side internal peg-leg multiples. With some modification, the same inverse transmission can...

Chapter Nine: Inversion and Interpretation of Impedance Data

Rebecca B. Latimer

AAPG Special Volumes

... inversion would yield is to filter the log data and remove the low frequencies. Figure 9-20b shows the same data set, with the low frequencies removed...

Shale Gas OVT Seismic Data Prestack Trace-Gather Optimization Technique

Yusheng Zhang, Gang Yu, Xing Liang, Benjing Liu, Guangming Hu

Unconventional Resources Technology Conference (URTEC)

... filtering method is applied to filter the random noises identified in a gather and between gathers respectively. By computing the structure tensor...

Abstract: Stabilizing Seismic Absorption Compensation; #90171 (2013)

Changjun Zhang

Search and Discovery.com

... Geophysical Ltd, Calgary, Canada [email protected] Summary To overcome the instability problem of inverse Q filtering, the introduced...

Abstract: Simple Wavefield Modelling to Evaluate the Low Frequency Artifacts in Reverse-Time Migration; #90224 (2015)

John C. Bancroft

Search and Discovery.com

... of the Marmousi data set, and (b) shows the result after low cut filtering. The low cut filter is shown in (c). A number of questions about the low frequency noise...

Application of Both Physics-Based and Data-Driven Techniques for Real-Time Screen-Out Prediction with High Frequency Data

Jianlei John Sun, Arvind Battula, Brandon Hruby, Paymon Hossaini

Unconventional Resources Technology Conference (URTEC)

... due to flow rate variation, and filtered using the savgol_filter (Scipy 2020) to remove the noises. Normalized surface pressure was divided...

Abstracts: Padé Approximation for Analyzing Multiple Reflections; #90173 (2015)

Dali Zhang, Michael P. Lamoureux, and Gary F. Margrave

Search and Discovery.com

... experiments in building the Padé approximating filter, and its use as an inverse filter to remove the multiples demonstrate the effectiveness...

Abstract: Robust Rank-Reduction Filters for Erratic Noise; #90174 (2014)

Stewart Trickett, Lynn Burroughs, and Andrew Milton

Search and Discovery.com

... noise before stacking can improve multiple removal, AVO analysis, prestack inversion, and the final stack. It’s also critical to remove severe erratic...

Abstract: Prestack Rank-Reduction-Based Noise Suppression: Theory; #90171 (2013)

Stewart Trickett and Lynn Burroughs

Search and Discovery.com

... filtering both use matrix-rank reduction on constantfrequency slices. These can be combined into a novel hybrid method with properties from both, forming...

Parsimonious Deconvolution

Jon F. Claerbout

Southeast Asia Petroleum Exploration Society (SEAPEX)

... the effect of filtering the innovations with some unknown filter bt. The output of the filter may or may not be combined with some additive noise ut before...

Restoring High Resolution in Surface Seismic Data

Search and Discovery.com

Fast Gauss-Newton full-wavefield migration

Siamak Abolhassani, Eric Verschuur

International Meeting for Applied Geoscience and Energy (IMAGE)

...) approximated the Hessian inverse by a migration deconvolution filter constructed based on a single reference v(z) medium, leaving laterally-invariant...

Comparison of Bed Form Variance Spectra Within a Meander Bend During Flood and Average Discharge

Raymond A. Levey, Bjorn Kjerfve, Rufus T. Getzen

Journal of Sedimentary Research (SEPM)

... was filtered numerically to remove most existing variance at wavenumbers greater than the Nyq ist wave-number. A recursive, low-pass Butterworth FIG. 3. Plot...

Structural Analysis Using Spatial Filtering in Interior Plains of South-Central Alberta

J. E. Robinson , H. A. K. Charlesworth , M. J. Ellis

AAPG Bulletin

... and suspension (Fig. 11). The output in the distance domain can then be ascertained by using the inverse Fouri r transform. Filtering in Distance Domain...

Application of Robust Noise Reduction on a Land 3D Seismic Data

Agus Abdullah, Jesse Shaw

Indonesian Petroleum Association

... techniques such as FK filter. Curvelet Transform shows superiority compared to conventional techniques such as median filtering and f-x deconvolution filtering...

AVO-preserving seismic data interpolation by orthogonal polynomial decomposition and mathematical morphological filtering

Yanxin Zhou, Yangang Mo, Junzhou Liu, Dajian Jiang

International Meeting for Applied Geoscience and Energy (IMAGE)

...AVO-preserving seismic data interpolation by orthogonal polynomial decomposition and mathematical morphological filtering Yanxin Zhou, Yangang Mo...

Finite Difference Modeling: Part II: How to clean numeric time dispersion

Lasse Amundsen, Ørjan Pedersen, Martin Landrø

GEO ExPro Magazine

... wavefield at frequency . Finally, an inverse Fourier transform gives the temporally dispersionfree wavefield in time. Digital Filtering Mittet (2018...

Abstracts: Fractional Fourier Transform in Coherent Noise Attenuation; #90173 (2015)

K. H. Miah and M. D. Sacchi

Search and Discovery.com

... formulations. In the last section, we express the FRFT as forward-adjoint operator pair, which will be used to setup the FRFT filtering as an inverse problem...

Abstract: Land Seismic Noise Suppression: Tough Challenge, Intelligent Implementation, by Khalid Al-Rufaii and Weihong Zhu; #90077 (2008)

Search and Discovery.com

DAS noise attenuation using wavelet stack

Zhou Yu, Zhaojun Liu, Ge Zhan, Peng Cheng, Bin Wang, Weihong Fei

International Meeting for Applied Geoscience and Energy (IMAGE)

... of the data to be removed are identified and excluded from the inverse transform, which reconstructs the original data, but modified by the filter operation. We...

Seismic Data Acquisition and Processing in the Midway-Sunset Oil Field

C. R. Willingham, A. S. Wylie Jr., D. J. Underwood

Pacific Section of AAPG

.... Therefore, it was elected not to remove noisy traces from the data set as had been done in the 1993 processing. Inverse Earth Filter Amplitude spectra...