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The AAPG/Datapages Combined Publications Database
Showing 758 Results. Searched 200,685 documents.
M3/M1PQ-A Float-Over Decks
Antoine Bliek, Frank Sliggers, Norman Ingka
Southeast Asia Petroleum Exploration Society (SEAPEX)
... on the substructure, topsides and barge fenders were derived with frequency domain analyses (which are relatively quick and easy to perform) at the start...
1996
Phase-encoded waveform inversion for multiples
Yike Liu, Bin He, Xiao-Bi Xie, Yingcai Zheng
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the frequency domain, Part 1: Theory and verification in a physical scale model: Geophysics, 64, 888β901, doi: https://doi.org/10.1190/1.1444597. Romero...
2022
Echo phone for direct attenuation indication
Lu Liu, Tong Fei, Fuhao Qin, Yi Luo
International Meeting for Applied Geoscience and Energy (IMAGE)
..., π΄ π is the frequency-domain amplitude spectrum, and the limits of integration π , π , π , and π , indicate the range for low- and high-frequency bands...
2022
Data processing workflow for reflections from cement-formation interface in ultrasonic pitch-catch measurement in cased hole
Shaopeng Shi, Hua Wang, Meng Li, Aihua Tao
International Meeting for Applied Geoscience and Energy (IMAGE)
... and angle frequency. Using Equation 2, we get the interpolated waveforms in the time domain. π(π‘) = β« πΉ(π)π»(π)π βπππ‘ ππ (2) where...
2022
Derivation of Seismic Depth Sections
H. Buchholtz, W. Houba
Geological Society of Malaysia (GSM)
... of reflecting elements. The procedure is usually performed in the time or frequency domain. The transformation to the depth domain requires the knowledge...
1987
9C data acquisition for near-surface imaging in a quick-clay landslide-prone site in SW Sweden
Tatiana Pertuz, Alireza Malehmir
International Meeting for Applied Geoscience and Energy (IMAGE)
... Hz, in the frequency domain, to further lower the amplitude of the source-generated noise. An NMO velocity analysis was conducted in a range...
2022
Infrasonic Passive Differntial Spectroscopy (IPDS) for Direct Detection of Hydrocarbons in Exploratory, Production and Depleted Fields
Ernst D. Rode, S.R. Das, S. Ravindran, M.K. Mukherjee, S.K. Nandy, Eswar Venkataraman, Amborish Bordoloi, Pydiraju Jinagam
Indonesian Petroleum Association
... Differential Spectroscopy). The recorded signals are transformed from time domain to the frequency domain where spectral signatures are analysed. Usually, 12...
2009
An effective multiphysics toolkit for lithium prospecting: From geophysics to the static reservoir model in Pozuelos salt flat, Argentina
Ana Curcio, Eliana Chanampa, Luis Cabanillas, Ricardo Piethe
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the gravity data. A complete set of enhacement / separations filters are applied, in the space and in the frequency domain. As an example, Figure 4b...
2022
VSP: Lessons from Numerical Simulation
M. Suprajitno, S. A. Greenhalgh
Indonesian Petroleum Association
... computing the 'resultant' transmission and reflection coefficients at R (Figure 1). The resultant coefficients are expressed in the frequency domain...
1985
Retrieving high-resolution acoustic impedance using full-waveform inversion in presalt reservoir setting, offshore Brazil
Akshat Abhishek, Alok K. Soni, Rene-Edouard Plessix, Martijn Blaauw, Jaydip Guha, Gautam Kumar
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the frequency domain, Part 1: Theory and verification in a physical scale model: Geophysics, 64, 659β992, doi: https://doi.org/10.1190/1.1444597. Rutherford...
2022
Estimating Rayleigh surface wave from ambient noise recorded by distributed acoustic sensing (DAS) dark fiber array in the city
Rafa Czarny, Tieyuan Zhu
International Meeting for Applied Geoscience and Energy (IMAGE)
...-frequency domain computed by the phase-shift method (Park et al., 1999). Fundamental and three higher modes can be easily identified. To invert dispersion...
2022
Premigration attenuation analysis and mapping to image domain by weighted migrations
Yonghe Sun, Chunling Wu, Mark Fan, Zhemin Tan
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and π‘β β‘ β« πππ¦ ππ π£(π0 ) β π (5) is the attenuated traveltime. The attenuation effect on wave propagation is represented by the frequency-domain filter π‘β π π‘β F(f...
2022
Borehole tube wave generation by an incident P-wave at a fluid-filled fracture
Abdullah Alsawidan
International Meeting for Applied Geoscience and Energy (IMAGE)
...bol indicates that the variable is in the frequency domain. Let us consider that an infinite parallel-wall fluid-filled fracture is surrounded by two infin...
2022
Direct observation of transient fluid pressure surge and resonance in a fluid-filled fracture
Yuesu Jin, Nikolay Dyaur, Yingcai Zheng
International Meeting for Applied Geoscience and Energy (IMAGE)
... already been calibrated. Figure 4. The pressure surge factor measured by H1~H5 for three apertures in the frequency domain. 4 Second International...
2022
Real-time hydraulic fracturing monitoring using deep learning clustering of microseismic data
Chenglong Duan, Lianjie Huang, Michael Gross, Michael Fehler, David Lumley
International Meeting for Applied Geoscience and Energy (IMAGE)
...-frequency domain, ππ(π‘π‘) is a seismic waveform in the time domain, π€π€(ππ) is the window function, Ο is the angular frequency, and i...
2022
Seismic data interpolation via frequency-constrained 3D inception Unet
Yen Sun, Paul Williamson
International Meeting for Applied Geoscience and Energy (IMAGE)
... a second label β the data transformed into the frequency-wavenumber domain; this requires the addition of a Fourier Transform layer to the architecture...
2022
Integrated Asset Performance Management: A True, Holistic View of Asset Health and Risk
Chris Engdahl, David Hattrick
Australian Petroleum Production & Exploration Association (APPEA) Journal
... Individual fault symptoms all contribute to what the sensor measures Blade passing Complex waveform Frequency domain data, with asset attributes...
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)
... in the frequency domain, which seriously affects the subsequent seismic data processing and geological interpretation (Dong et al., 2020). Therefore, many...
2022
Detection of shallow sedimentary structure of Yigong Lake in Tibetan Plateau using distributed acoustic sensing
Jian Zhou, Jizhong Yang, Heng Zhang
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the frequency domain. in space. According to the schematic layout in Figure 2, it can be inferred that the higher energy comes from the traffic noise...
2022
Joint inversion of magnetotelluric and seismic travel time data with intelligent interpretation of geophysical models
Hongyu Zhou, Rui Guo, Maokun Li, Fan Yang, Shengheng Xu, Zuzhi Hu, Deqiang Tao
International Meeting for Applied Geoscience and Energy (IMAGE)
... equations β 2 Ex β 2 Ex + + (Ο 2 ¡Ρ + iΟ Β΅Ο )Ex = 0 β y2 β z2 (1) β Ex = iΟ Β΅Hy (2) βz from the Maxwellβs equation in the frequency domain with time...
2022
Seismic response analysis of thin coals
Yijun Xi, Xingyao Yin
International Meeting for Applied Geoscience and Energy (IMAGE)
..., and achieved the fine characterization of sandstone reservoir through frequency division reconstruction in time-frequency domain. The interbedded thin coal...
2022
CSEM fluid monitoring methodology using real data examples
Kurt Strack, Donald C. Adams, Csar Barajas-Olalde, Sofia Davydycheva, Ryan J. Klapperich, Yardenia Martinez, Kris MacLennan, Andri Yadi Paembonan, Wesley D. Peck, Maxim Smirnov
International Meeting for Applied Geoscience and Energy (IMAGE)
.... Rykhlinski, 2009, Focused source EM survey versus time-domain and frequency-domain CSEM: The Leading Edge, 28, 944β949, doi: https://doi.org/10.1190/1.3192841...
2022
Quantitative analysis of DAS recorded P-wave generated by perforation shots
Peiyao Li, Ge Jin
International Meeting for Applied Geoscience and Energy (IMAGE)
... as it appears in Ryden et al. (2004). The N-channel record in the frequency domain can be written as a product of amplitude and phase . For a propagation wave...
2022
3D-9C seismic survey for direct S-wave processing and interpretation
Rui Zhang, Zhiwen Deng, Yuanyuan Yue, Yan Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
..., which can be described as equation (1) in frequency domain, where U0 (Ο) and U(Ο) are their spectra, respectively. Ri indicates the polarity rotation...
2022
Calculating sensitivities for 3D inversion of electromagnetic well logging data
CΓcero RΓ©gis, Paulo Roberto de Carvalho
International Meeting for Applied Geoscience and Energy (IMAGE)
... in the frequency domain, using an implementation of the VFE method, following the steps described by Jin (2015) and using a tetrahedral mesh generated...
2023