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Showing 1,682 Results. Searched 200,619 documents.
High-fidelity full-waveform imaging via impedance inversion
Feng Chen, Yu Zhang, Lian Duan, Weishan Han, Yilong Qin, Qianggong Song
International Meeting for Applied Geoscience and Energy (IMAGE)
... = sin cos ( )= sin cos ( ; ; ) ( ; ; ) . (3) As the inversion methods, e.g., least-squares based imaging and FWI, become the driving force...
2023
Application of Fractal Method for Quantifying Fault Geometry
Sigit Sukmono, Lilik Hendrajaya, Djoko Santoso
Indonesian Petroleum Association
... in Figure 3. Fractal dimension D of the Semangka fault is estimated from the slopes of straight-line least squares fit to these data and found to be D = 1.58...
1994
Delineation of Leachate Plumes at Two Waste Disposal Sites, Selangor
Abdul Rahim Samsudin, Bahaa-eldin Elwali A. Rahim, Wan Zuhairi Wan Yaacob
Geological Society of Malaysia (GSM)
.... Rapid least-squares inversion of apparent resistivity pseudosections by a quasi-Newton method. Geophysical Prospecting, 44:131-152. DAWSON, C.B....
2007
An acoustic wave equation with the gradients of velocity and density
Jianyong Bai, Orhan Yilmaz
International Meeting for Applied Geoscience and Energy (IMAGE)
... estimation in full waveform inversion or is used for optimizing migration image in least-squares RTM. Note that historically the reflectivity has been used...
2023
FWI imaging of complex subsalt Mesozoic targets from land to shallow waters
Timmy Dy, Minshen Wang, Sabaresan Mothi, Don Dobesh, Shengda Ding, Oscar Andrade, Pablo Ortega, Alfredo Vázquez Cantú, Silvino Domínguez García, Gerardo López Leyva
International Meeting for Applied Geoscience and Energy (IMAGE)
... a least-squares RTM might help the illumination and amplitude to some extent, the phase uncertainty persists. FWI Imaging, through iterative data-fitting...
2023
Automated processing development at a CO2 site: Phase detection, location, magnitude
Jian Zhang, Kevin D. Hutchenson, Elige B. Grant, Paul A. Nyffenegger, Mark A. Tinker
International Meeting for Applied Geoscience and Energy (IMAGE)
... with the actual spectrum of the event. A model (Brune, 1970, 1971) is used to fit the event at each array between 10 and 90 Hz. A least squares minimization...
2023
4D joint inversion and close-the-loop for production history matching and forecasting
Kelly Wrobel, J. P. Blangy, Tony Rolland, Evan Mutual, Klaus Bolding Rasmussen, Wendell Pardasie
International Meeting for Applied Geoscience and Energy (IMAGE)
... the Atlantis area. With this data, a least squares regression was applied to calculate the mineral end member values for each mineral constituent of the rock...
2023
Value of marine vibrators for effective frequency-dependent spatial sampling of seismic wavefield
Arash JafarGandomi, Aparajita Nath, Sergio Grion
International Meeting for Applied Geoscience and Energy (IMAGE)
...-gun array signatures from near-gun measurements — least-squares inversion, bubble motion and error analysis: 85th Annual International Meeting...
2023
A Robust Gradient for Long Wavelength FWI Updates
Jaime Ramos-Martinez, Sean Crawley, Kathy Zou, Alejandro Valenciano, Lingyun Qiu, Nizar Chemingui, Andrew Long
Petroleum Exploration Society of Australia (PESA)
... a nonlinear inverse problem by matching modelled seismic data to recorded field data. The matching is quantified by the residuals of a least-squares...
2016
Induced Gamma Ray Spectroscopy (IGS) Log Application in the Java Sea
Cholid Mas, Anna Maria, Mark Schneider, Bambang Hari Setiyawan
Indonesian Petroleum Association
... yield, can be determined by weighted least squares spectral fitting. Figure 3 summarizes the process of obtaining elemental yield. This process...
1996
Optimal transport for elastic source inversion
Tyler Masthay, Björn Engquist
International Meeting for Applied Geoscience and Energy (IMAGE)
... model (M´ tivier et al. (2018)). Cycle e skipping is caused by the nonconvex nature of the misfit optimization landscape in its typical least-squares...
2023
Full-waveform inversion derived prestack reflectivity gathers
Jian Mao, Xin Cheng, Denes Vigh, James Xu, Qiaofeng Wu
International Meeting for Applied Geoscience and Energy (IMAGE)
... events are focused due to the iterative least-squares nature of FWI. There are three anomalies under the salt where we extracted amplitude information...
2023
Survey merging using CycleGAN and patchy seismic images
Chaoshun Hu, Fan Jiang, Konstantin Osypov, Julianna Toms
International Meeting for Applied Geoscience and Energy (IMAGE)
... isolating trace segments in the defined window and derived by least-squares timedomain with a smoothness constraint. However, after applying those...
2023
3D deblending for marine towed-streamer data
Yangkang Chen, Min Zhou, Ray Abma
International Meeting for Applied Geoscience and Energy (IMAGE)
..., S. Fomel, and J. Sun, 2016, Seismic imaging of incomplete data and simultaneous-source data using least-squares reverse time migration with shaping...
2024
Depth conversion and seismic inversion of the Scarborough gas field
Joseph Kremor, Manish Agarwal, Paul Spaans, Ung Sing Wong
Petroleum Exploration Society of Australia (PESA)
...; and A least squares regressor is usually a better noise attenuator than gather stacking. There is therefore a balance between the potential quality...
2019
Insights on time-lapse changes from 4D joint full-waveform inversion in Mississippi Canyon, Gulf of Mexico
Markus Albertz, Vincent Durussel, Tianjiang Li, Gaurav Dutta, Xin Cheng, Oscar Perez, Markos Sourial, Aurora Rodriguez Castelan
International Meeting for Applied Geoscience and Energy (IMAGE)
... near salt flanks. However, due to the nonlinear least-squares approach embedded within FWI and the enhancement in bandwidth achieved during the FWI...
2024
Role of Organic Species Dissolved in Formation Waters from Sedimentary Basins in Mineral Diagenesis
Yousif K. Kharaka, Leroy M. Law, William W. Carothers, Donald F. Goerlitz
Special Publications of SEPM
...). The boundary of Zone 3, where no acid anions are present, is placed at about 200" C and is obtained by extrapolation of the least-squares line of Figure 1...
1986
The application of gradient and curvature calculations based on the eigenstructure of seismic data in imaging geological discontinuities
Shihong Yuan, Ping Chen, Lei Li, Zhenyu Sa, Ruidong Han, Zhen Pang
International Meeting for Applied Geoscience and Energy (IMAGE)
... a quadratic surface to the interpreted horizon using least squares or other approximation methods. This paper proposes a new method using eigenvalue...
2024
Structure of Albertite from New Brunswick, Canada
Ganjavar Khavari-Khorasani
CSPG Bulletin
... curves were fitted to the experimental data by means of a least-squares curve-fit computer program. CARBONIZATION The bitumen sample was carbonized...
1983
Enhanced ray-based tomography method
Jonathan Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... linear equations and least-squares problems: TOMS, 8, no. 2, 195–209. Zhou, H.-W., 2003, Multiscale traveltime tomography: Geophysics, 68, 1639–1649...
2024
Hydraulic fracture plane identification based on unsupervised learning
Zizhuo Ma, Tao Liu, Junzhou Liu
International Meeting for Applied Geoscience and Energy (IMAGE)
... on the least squares interference method, we obtained the highprecision acoustic emission source location (Figure 6a). We first fit a hydraulic fracture...
2024
Innovation for Conventional Hydrocarbon Exploration with Audio Magnetotelluric Method
Widodo, Durra Handri Saputera, Iqbal Fauzi Aditama, Andriyan Saputra
Indonesian Petroleum Association
... for petroleum exploration in West Siberia. Russian Geology and Geophysics 55 (2014) 763-774. Marquardt, D., 1963, An algorithm for least squares estimation of non...
2015
Magnetic Stratigraphy and Tectonic Rotation of the Oligocene Alsea, Yaquina, and Nye Formations, Lincoln County, Oregon
Donald R. Prothero, Clio Z. Bitboul, George W. Moore, Alan R. Niem
Pacific Section SEPM
... component was estimated using the least squares method of Kirschvink (1980), and averaged using Fisher (1953) statistics. Each site was then ranked...
2001
Magnetic Stratigraphy and Tectonic Rotation of the Lower Miocene (Type Saucesian) Rincon Formation, Ventura and Santa Barbara Counties, California
Donald R. Prothero, Stacey G. Rapp
Pacific Section SEPM
... in single-domain or pseudo-single-domain grains. This main component of remanence was summarized using the least squares method of Kirschvink (1980). Site...
2001
Geology and Geophysics of South Central Zavala and Adjoining Parts of Dimmit Counties, Texas
James A. Noel
GCAGS Transactions
.... The Elaine field is included in the study area. Gravity and magnetic residuals were calculated using the least squares method, and the magnetics...
1984