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The AAPG/Datapages Combined Publications Database
Showing 1,680 Results. Searched 200,293 documents.
Abstract: Reverse Time Adjoint and Reverse Time Inverse Migration, by H. Liu andY. Luo, #90188 (2014)
Search and Discovery.com
2014
Adaptive regularization parameter estimation in image domain least-squares migration
Shen Sheng, Huazhong Wang
International Meeting for Applied Geoscience and Energy (IMAGE)
...Adaptive regularization parameter estimation in image domain least-squares migration Shen Sheng, Huazhong Wang Adaptive regularization parameter...
2024
Estimation of the Information Capacity and Practical Significance of Relationships used in Geophysical Logging
A. I. Volkova, L. B. Dvorkin
Petroleum Geology: A Digest of Russian Literature
..., A. S., 1958, Method of least squares from principles of probability theory: Geodezizdat. Geophysical logging studies often use various empirical relationships...
1966
-- no title --
user1
Search and Discovery.com
... in the premigration pre-stack domain based on a dataset from this region. The workflow involved least-squares multiple imaging to obtain a reliable reflectivity...
Unknown
Least-squares RTM with shifted total variation regularization for depth imaging of sparse short-offset seismic data
Toktam Zand, Andrzej Gorszczyk, Ali Gholami, Hasan Ghasemzadeh, Alison Malcolm
International Meeting for Applied Geoscience and Energy (IMAGE)
... of the sparse data and short offsets. In this abstract we proposed a new shifted total variation (STV) regularization method for least-squares reverse time...
2022
Traveltime tomography and efficient physics-informed Bayesian inversion
Tian Qiao, George Turkiyah, Gerard T. Schuster
International Meeting for Applied Geoscience and Energy (IMAGE)
... (s) The goal of VSP traveltime inversion by a least squares method is to invert the transmission traveltimes for the velocity model v(z) as a function...
2022
Low-rank representation for reflectivity model and its applications in least-squares migration
Jidong Yang, Jianping Huang, Hejun Zhu, George McMechan
International Meeting for Applied Geoscience and Energy (IMAGE)
... is for least-squares data fitting using the preconditioned conjugate gradient method, and the second step is for minimizing the weighted nuclear norm using...
2024
Abstract: Contouring Geologic Data from Arbitrary Points, by D. R. McDonald, C. J. R. Braithwaite, A. Jawad Ali; #90972 (1976).
Search and Discovery.com
1976
Abstract: Statistical regression models for predicting landslide hazard
C. F. Chung
Atlantic Geology
... subareas are defined where each subarea contains a unique combination of the map patterns. Weighted least squares techniques are proposed...
1995
Grain Orientation in Beach Sands: A Possible Means for Predicting Reservoir Trend
R. H. Nanz
Journal of Sedimentary Research (SEPM)
... pattern in a polished or thin section and data are plotted in a circular histogram. A mean direction is computed by a least-squares method, spread...
1955
ABSTRACT: Computer-Aided Geometric Modeling of Geologic Surfaces, by H. Schaeben, S. Auerbach; #91003 (1990).
Search and Discovery.com
1990
Distribution of Hydrocarbons in Three Dimensions: ABSTRACT
John C. Davis
AAPG Bulletin
... is a least-squares expression of the relation between the dependent variable and the spatial coordinates. In practice, a polynomial expansion...
1969
Abstract: Seismic Data Inversion Using Geologic Constraints, by R. T. Vest; #91018 (1992).
Search and Discovery.com
1992
KOALA--Minicomputer Log Analysis System for Geologists: ABSTRACT
John H. Doveton, Harold W. Cable
AAPG Bulletin
..., or least-squares matrix algorithms, depending on the degree of determinancy prescribed by the number of components as related to number of logs...
1979
Gravity Investigation of Suspected Silurian Reef in North-Central Ohio: ABSTRACT
William Owen Bolla
AAPG Bulletin
... was set at 200 ft (61 m) to insure detection of the anomaly. The gravity residual was calculated by least squares analysis on an IMB 370 computer...
1981
ABSTRACT: Assessment of In-Situ Gas Saturation and Permeability From Logs in the Hugoton Field Based on the Physics of Mud-Filtrate Invasion; #90048 (2005)
Carlos Torres-Verdin, Faruk O. Alpak, Bovan George, Ray Sorenson, Grant Robertson
Search and Discovery.com
... variations of gas saturation away from the borehole wall. A least-squares constrained optimization method is employed to solve the inverse problem. Array...
2005
ABSTRACT: 1-D Inversion and Analysis of Marine Controlled-Source Electromagnetic Data; #90061 (2006)
Niels B. Christensen, Kevin Dodds, and Ian Bulley
Search and Discovery.com
.... Inversion is carried out with multi-layer models and L1-optimization and with 4-layer models in the least-squares sense. A general analysis of the resolution...
2006
Abstract: Statics and Trace Regularization; #90211 (2015)
Robert Ferguson
Search and Discovery.com
... of seismic data is investigated by treating wavefield extrapolation as a least-squares inversion problem. Weighed, damped leastsquares is then used...
2015
Multiple Suppression on Marine Data Recorded in The Middle East
Search and Discovery.com
N/A
Fast
Search and Discovery.com
N/A
Difficult Lithologies: Part 4. Wireline Methods
Khaled Hashmy, Mark Alberty
AAPG Special Volumes
... of the response equations, which can result in degradation of the answers. Weighted Least Squares Minimizations The weighted least squares minimization method...
1992
High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration
Jidong Yang, Jianping Huang, Tengfei Lin, Zhenchun Li, and Liang Chen
AAPG Bulletin
...High-precision seismic imaging for complex deep structures in the hydrocarbon exploration using a coherent-stacking-based least-squares migration...
2024
Stacking common-image gathers via the flatten-illumination-similarity method
Chengliang Wu, Huazhong Wang, Bo Feng, Chao Ning, Xianggong Tang
International Meeting for Applied Geoscience and Energy (IMAGE)
... least squares migration (LSM) (Schuster and Liu, 2019, Wang et al., 2016). Compared to migration methods, LSM has the ability to correct various...
2023
Memory-efficient frequency-domain least-squares RTM using low-rank Greens functions via randomized SVD
Daniel E. Revelo, Reynam C. Pestana, Diego F. Barrera, Rodrigo S. Santos
International Meeting for Applied Geoscience and Energy (IMAGE)
... optimization method iteratively (Nemeth et al., 1999). In particular, when the LSM is based on the two-way wave equation, it is called least-squares reverse time...
2024
Demultiple for Wide-Tow Broadband Acquisition in a Shallow Water Environment: A Case Study from the NW Shelf, Australia
Mike Hartley, Shuo Ji, Alex Browne
Petroleum Exploration Society of Australia (PESA)
... is an important step in multiple removal. The flexibility of frequency-dependent least squares global adaption, used in conjunction with the accuracy of curvelet...
2016