Results 201 to 210 of about 600,749 (229)

A Pre-stack Basis Pursuit Seismic Inversion

Proceedings, 2012
ABSTRACT Resolving thin layers and clearly delineating layer boundaries in inverted seismic sections are very important goals for exploration and production. Many seismic inversion methods based on a least-squares optimization approach with Tikhonov-type regularization can lead to unfocused transitions between adjacent layers. A basis
Rui Zhang, Mrinal K Sen, Sanjay Srinivasan   +2 more
openaire   +1 more source

Unlocking gas reserves in bypassed stratigraphic traps in a deepwater brownfield using prestack seismic inversion: A case study from offshore Nile Delta, Egypt

The Leading Edge, 2018
In deepwater depositional systems such as the slope canyon-turbidite channel system encountered on the continental slope of the offshore West Nile Delta Basin, deterministic prestack seismic inversion followed by facies classification using formation ...
H. El-Mowafy, M. Ibrahim, D. Dunlap
semanticscholar   +1 more source

Simultaneous prestack inversion of variable-depth streamer seismic data

Applied Geophysics, 2019
Variable-depth streamer seismic data are characterized by low and high frequencies and can be used to obtain high-quality and resolution images of complex subsurface structures. Taking advantage of the frequency range in the variable-depth streamer data, we propose the simultaneous inversion of prestack data from variable-offset stack gathers to obtain
Zhen-Bo Zhang, Yi-Hua Xuan, Yong Deng
openaire   +1 more source

Intelligent Prestack Multi-trace Seismic Inversion Constrained by Probabilistic Geological Information

Geophysics
Seismic inversion uses observed data including well-logging and seismic data to infer rock parameters. However, it still suffers from non-unique solutions. The non-uniqueness increase when extrapolating away from well location.
Mingxuan Li, Hong Cao, Zhi-Fang Yang, Yue Yu, Qiang Ge, Sanyi Yuan   +5 more
semanticscholar   +1 more source

Prestack waveform inversion of multi‐component seismic data

SEG Technical Program Expanded Abstracts 2000, 2000
In this paper, we describe a procedure for prestack waveform inversion of multi-component seismic data. Assuming an isotropic elastic earth model, prestack vertical and in-line horizontal component data are jointly inverted for the P-wave velocity (Vp), density (ρ) and Poisson’s ratio (σ).
openaire   +1 more source

Lithology-Fluid Inversion Based on Prestack Seismic Data

EAGE Conference on Petroleum Geostatistics, 2007
The focus of the study is on lithology-fluid inversion from prestack seismic data. The target zone is a 3D reservoir, and the inversion problem is solved in a Bayesian framework where the complete solution is given by the posterior model. The likelihood model relates the lithology-fluid classes to elastic variables and the seismic data, and it follows ...
openaire   +1 more source

Prestack Seismic Inversion by Quantum Annealing: APPLICATION TO CANA FIELD

International Meeting for Applied Geoscience & Energy, 2015
Summary The aim of seismic inversion is to estimate the subsurface elastic properties. Deterministic seismic inversion based on local optimization suffers from getting trapped in a local minimum. Also, the inversion result is generally band limited.
Badr Alulaiw*, Mrinal K. Sen
openaire   +1 more source

Deep Learning Seismic Inversion Based on Prestack Waveform Datasets

IEEE Transactions on Geoscience and Remote Sensing, 2022
Jian Zhang 0081, Hui Sun, Gan Zhang, Xiaoyan Zhao   +3 more
openaire   +2 more sources

Block sparse Bayesian learning-based prestack seismic inversion with the correlation of velocities and density

Acta Geophysica, 2022
Ming Ma, Rui Zhang
semanticscholar   +1 more source

Prestack Seismic Inversion for Sw Modeling

66th EAGE Conference & Exhibition, 2004
B. Bankhead, A. Sena
openaire   +1 more source