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Showing 2,334 Results. Searched 201,044 documents.
Suppression of coherent and random noise using adaptive thresholding method in seismic-while-drilling
Yue Ma, Yujin Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
.... Chanerley and Alexander (2002) use the stationary wavelet transform as an alternative to f-k filtering for seismic noise removal. The curvelet transform...
2022
Echo phone for direct attenuation indication
Lu Liu, Tong Fei, Fuhao Qin, Yi Luo
International Meeting for Applied Geoscience and Energy (IMAGE)
..., which may represent the rocks saturated with water and gas, respectively. We use a Ricker wavelet with a peak frequency of 10 Hz to generate 300...
2022
Vz denoise and P/Z matching in 3D curvelet domain
Yong Ren, Chenhao Yang, Tim Seher, Matt Hawke, Eddie Cho
International Meeting for Applied Geoscience and Energy (IMAGE)
... separation. Ren et al. (2020) used a P/Z amplitude ratio thresholding approach for Vz denoising in dual-tree complex wavelet domain. Yang et al (2020) proposed...
2022
Overcoming signal processing challenges on a deep-water sparse OBN survey: A case study from the Gulf of Mexico
Matthew Salgadoe, Nigel Seymour, Hongyan Li, Di Chen
International Meeting for Applied Geoscience and Energy (IMAGE)
... nature of this data. Applying the source directivity correction in the tau-px-py space further improved the amplitude and phase consistency of the wavelet...
2022
Semi-automated prestack seismic inversion workflow using temporal convolutional networks
Hussain Alfayez, Robert Smith, Ayman Suleiman, Nasher AlBinHasan
International Meeting for Applied Geoscience and Energy (IMAGE)
... for relatively simple geological scenarios, since common steps such as the construction of an initial model and wavelet extraction are not explicitly...
2022
Predicting horizons for salt body models using machine learning from neighboring seismic surveys: A case study from the northern Gulf of Mexico
Andrew Reisdorf, Dan Ferdinand Fernandez, Hugo Enrique Munoz Cuenca, Ryan King, David Manzano, Gavin Menzel-Jones
International Meeting for Applied Geoscience and Energy (IMAGE)
... to accurately position the trained event within the center of the wavelet (Fernandez et al., 2021). Once the training labels have been created...
2022
The 'Geoseis' System: Seismic Prospecting with Detonating Cord - A Line Energy Source
D. W. Thompson
Petroleum Exploration Society of Australia (PESA)
... is given by the duration of the detonation as sin oo = 0. At one particular angle oo = 8 the pulse is a sharp wavelet (Fig. 2). This is the angle...
1985
Orthorhombic AVAZ inversion in the Laplace-Fourier domain
Lin Li, Jinmiao Zhang, Guangzhi Zhang, Zhenyu Zhu, Jiajia Zhang, Chao Li, Xinpeng Pan
International Meeting for Applied Geoscience and Energy (IMAGE)
... be written in the matrix form as (4) Rk 1 Ak 5 k 1m5 k 11 ln VS where W represents the wavelet matrix, S is the timedomain seismic amplitude...
2022
Enhancing the accuracy of DBSCANs first arrival traveltime picking using super-virtual refraction interferometry
Muhammad Awais, Sherif M. Hanafy, King Fahd
International Meeting for Applied Geoscience and Energy (IMAGE)
... msec and the total generated time is 2 sec. The used source wavelet is a Ricker wavelet with 20 Hz peak frequency. Figure 4a shows shot gather number...
2022
Validating machine learning-based seismic property prediction through self-supervised seismic reconstruction
Tao Zhao, Haibin Di, Aria Abubakar
International Meeting for Applied Geoscience and Energy (IMAGE)
... impedance by convolving with a statistical wavelet (Figure 6c). Comparing the three images, we clearly see the ML reconstruction provides much higher...
2022
Boosting self-supervised blind-spot networks via transfer learning
Claire Birnie, Tariq Alkhalifah
International Meeting for Applied Geoscience and Energy (IMAGE)
... modelling using an explosive source with a 20 Hz Ricker wavelet and contaminated by coloured, Gaussian Noise. Figure 1 displays some of the field...
2022
Least-squares reverse-time migration with angle gathers through point spread functions
Jianyong Bai, Orhan Yilmaz
International Meeting for Applied Geoscience and Energy (IMAGE)
... and (d) LSM. terval of 50 meters. Each shot gather has 281 receivers with a receiver interval of 10 meters. A Ricker wavelet with the peak frequency...
2022
A Case Study of Seismic Exploration in the Offshore Bonaparte Basin
J. Durrant, A. Young
Petroleum Exploration Society of Australia (PESA)
... producing minimal wavelet distortion. A more effective deconvolution resulted from this second-iteration DBS following pre-stack processing. The F I K...
1988
Reducing seismic quantitative interpretation uncertainty in complex geological environments: A case study from offshore Australia
Andrea Paxton, Lianping Zhang, Abdul Kholiq, Lee Davey, Richard Bisley, Dominic Fell, Leo Leon, James Shadlow
International Meeting for Applied Geoscience and Energy (IMAGE)
.... The method compensates for the geophysical challenge of variable illumination using PSFs to capture dip-, space-, depth- and angle-dependent wavelet...
2022
Sensitivity analysis of acoustic waveform inversion to velocity anomalies in the near-surface using the Frchet derivative
Ao Cai, Colin A. Zelt
International Meeting for Applied Geoscience and Energy (IMAGE)
... is the dominant wavelength of the seismic wave. The anomaly center is the origin of the coordinates. The numerical simulations (Figure 1) use a Ricker wavelet...
2022
Application of full-waveform inversion to ultra-high-density OBN data at Clair field
Simon Luo, Xukai Shen, Philip Tillotson, Lindsey Smith, Dan Davies
International Meeting for Applied Geoscience and Energy (IMAGE)
...(b) shows the same source wavelet estimation performed on 8-meter grid spacing. With the smaller grid spacing, phase errors are reduced...
2022
Machine learning in reservoir characterization: Coupling data resolution-enhancement with hierarchical analysis of 3D seismic attributes for seismic facies classification
Papa A. Owusu, Abdelmoneam Raef
International Meeting for Applied Geoscience and Energy (IMAGE)
... classification. However, the underlying limitations of resolution of thin lithofacies and the associated wavelet interference may adversely impact the utility...
2022
An integrated machine learning-based fault classification workflow
Jie Qi, Carolan Laudon, Kurt Marfurt
International Meeting for Applied Geoscience and Energy (IMAGE)
... contaminated by random noise. Seismic migration maps the source wavelet perpendicular to specular reflectors. Lateral discontinuities in these reflectors...
2022
Improving seismic interferometry for traffic noise by wavefield decomposition and deconvolution
Weiping Cao, Xuri Huang, Yezheng Hu, Yungui Xu, Jing Tang, Hai Yao
International Meeting for Applied Geoscience and Energy (IMAGE)
...; correlating unidirectionally propagating far-field introduces a wavelet term and crosstalk artifact; correlating the unseparated wavefield generate...
2022
Unsupervised machine learning for seismic facies classification applied in presalt carbonate reservoirs of the Bzios Field, Brazil
Dbora Ribeiro Barretto, Pedro Henrique Cunha de Macedo, Wagner Moreira Lupinacci, Raisa Carvalho Silva
International Meeting for Applied Geoscience and Energy (IMAGE)
... using a wavelet transform method (Sinha et al., 2005). Then, we selected the most representative frequency bandwidth to highlight seismic patterns...
2022
Seismic random noise attenuation via enhanced similarity self-supervised learning
Jiale Wang, Naihao Liu, Yihuai Lou, Jinghuai Gao
International Meeting for Applied Geoscience and Energy (IMAGE)
... into three categories. The first is the transform-based denoising methods, such as wavelet transform (Wu and Liu, 2008), curvelet transform (Tang and Ma...
2022
LithoBot: An AutoML approach to identify lithofacies
Mayur Nawal, Santosh Kumar, Bharath Shekar
International Meeting for Applied Geoscience and Energy (IMAGE)
... (2021) used k-nearest neighbor algorithm and naive bayes classification. Merembayev et al. (2021) applied wavelet transform to wireline logs...
2022
Determining Coal Distribution Based on Integrated Geological and Geophysical Study to Estimate Coal Bed Methane Resources in the Tarakan Formation: Case Study Kuncring Area
Dini Andriani, Erlangga Wibisono, Hizbina Khanaif, Ratna Johan Tri Pratiwi, Widi Atmoko
Indonesian Petroleum Association
... and wavelet minimum phases extracted from ricker 20Hz. A good correlation was obtained when matching up between coal zones from log data to seismic...
2013
Sandstone Reservoir Distribution of Cibulakan Formation Using Seismic Inversion Method: Extended Elastic Impedance (EEI), in Cemara Field, North West Java Basin
M. Rizky Harun, Lutfie Arlan Sandria, Asri Surya Ilhami, Adang Sukmatiawan, M. Razi
Indonesian Petroleum Association
... using seismic EEI 46Ο reflectivity and the background model made from EEI 46Ο logs. The seismic inversion process also used wavelet from EEI 46Ο...
2013
Case Study: Can We Use Angle Gathers to Detect Fracture Distribution of Carbonate Reservoir in Rama Field?
Zha Chaoyang, Sun Pengxiao, Shen Xiaohong, Wen Shuliang, Tang Donglin, Heng Liqun
Indonesian Petroleum Association
... and wavelet was extracted (Figure-4). And the 4-angle stack data were used for AVO analyses (Figure-5). METHODOLOGY Formational anisotropy effects seismic...
2013