Results 141 to 150 of about 267,234 (181)

An improved strategy for exact Zoeppritz equations AVA inversion

International Meeting for Applied Geoscience & Energy, 2015
Summary The intention of this paper is to implement the Zoeppritz equations inversion using a nonlinear inversion strategy to obtain a more accurate density parameter from the prestack inversion and apply it to real field data. An iterative regularizing Levenberg-Marquardt (IRLM) scheme for Zoeppritz-based prestack inversion is ...
Lixia Zhi*, Shuangquan Chen, Xiang-Yang Li, Wanlu Zhang   +3 more
openaire   +1 more source

Bayesian AVA inversion in combined time and frequency domain

International Meeting for Applied Geoscience & Energy, 2015
Summary AVA/AVO inversion works as an important tool in elastic parameters estimation, which can be implemented under statistical such as Bayesian or deterministic inversion scheme. In this study, an AVA inversion strategy in combined time and frequency domain (AVA-TF) is proposed under Bayesian inversion scheme to enhance the ...
Zhaoyun Zong*, Xingyao Yin, Kun Li
openaire   +1 more source

Thin interbed AVA inversion based on a fast algorithm for reflectivity

Acta Geophysica, 2020
Zoeppritz equations form the theoretical basis of most existing amplitude variation with incident angle (AVA) inversion methods. Assuming that only primary reflections exist, that is, the multiples are fully suppressed and the transmission loss and geometric spreading are completely compensated for, Zoeppritz equations can be used to solve for the ...
Zhen Yang, Jun Lu
openaire   +1 more source

On the Shortcomings of Linear AVP (AVA, AVO) Inversion

71st EAGE Conference and Exhibition incorporating SPE EUROPEC 2009, 2009
In order to make reservoir geophysics really useful one should be able to obtain density prediction from seismic This has always proved extremely difficult.
openaire   +1 more source

The ARD-Based AVA Inversion Method with Low-Frequency Constraint

82nd EAGE Annual Conference & Exhibition, 2020
Summary The amplitude variation with angle (AVA) inversion method utilizing angle information to obtain the elastic parameters of subsurface rock plays a critical role in reservoir characterisation. For the sake of non-uniqueness, regularisation in most inversion applications is required to select an optimum model amongst many possible solutions and ...
Y. Ji, H. Hu, K. Zhang, Z. Lin
openaire   +1 more source

Least-squares wave-equation migration for AVP/AVA inversion

Geophysics, 2003
Abstract We present an acoustic migration/inversion algorithm that uses extended double-square-root wave-equation migration and modeling operators to minimize a constrained least-squares data misfit function (least-squares migration).
Henning Kühl, Mauricio D. Sacchi
openaire   +1 more source

Deep Physics-Driven Stochastic AVA Inversion

84th EAGE Annual Conference & Exhibition, 2023
P.Y. Burkle, L. Azevedo, M. Vellasco
openaire   +1 more source

PP-PS depth-domain AVA inversion

Third International Meeting for Applied Geoscience & Energy Expanded Abstracts, 2023
Maud Cavalca, Robin P. Fletcher
openaire   +1 more source

Anisotropic imaging and AVA inversion of DAS data

First International Meeting for Applied Geoscience & Energy Expanded Abstracts, 2021
Scott Leaney, Rafael Guerra, Edan Gofer
openaire   +1 more source

Joint PP, PS1, and PS2 AVA Inversion of HTI Media

IEEE Transactions on Geoscience and Remote Sensing, 2022
Mengqi Li 0001, Jun Lu, Alexey Stovas, Yun Wang   +3 more
openaire   +1 more source