Relative fidelity processing of seismic data : methods and applications / edited by Xiwen Wang.

Format:

Book

Author/Creator:

Wang, Xiwen, 1956-

Contributor:

Wang, Xiwen, 1956- editor.

Series:

Wiley series in petroleum industry press

Language:

English

Subjects (All):

Seismic prospecting.

Petroleum--Prospecting.

Petroleum.

Petroleum--Geology.

Petrology.

Physical Description:

1 online resource (363 pages) : illustrations (some color)

Edition:

1 edition.

Place of Publication:

Chichester, West Sussex, England : Wiley Blackwell, 2017.

Summary:

This book presents a comprehensive overview of relative fidelity preservation processing methods and their applications within the oil and gas sector. Four key principles for wide-frequency relative fidelity preservation processing are illustrated throughout the text. Seismic broadband acquisition is the basis for relative fidelity preservation processing and the influence of seismic acquisition on data processing is also analyzed. The methods and principles of Kirchhoff integral migration, one-way wave equation migration and reverse time migration are also introduced and illustrated clearly. Current research of relative amplitude preservation migration algorithms is introduced, and the corresponding numerical results are also shown. RTM (reverse time migration) imaging methods based on GPU/CPU systems for complicated structures are represented. This includes GPU/CPU high performance calculations and its application to seismic exploration, two-way wave extrapolation operator and boundary conditions, imaging conditions and low frequency noise attenuation, and GPU/CPU system based RTM imaging algorithms. Migration velocity model building methods in depth domain for complicated structures are illustrated in this book. The research status and development of velocity model building are introduced. And the impacting factors are also discussed. Several different velocity model building methods are also represented and analyzed. The book also provides the reader with several case studies of field seismic data imaging in different kinds of basins to show the methods used in practice.

Contents:

Intro

Title Page

Copyright Page

Contents

Preface

Chapter 1 Study on Method for Relative Fidelity Preservation of Seismic Data

1.1 Introduction

1.2 Discussion on Impact on Processing of High-resolution, High SNR for Seismic Acquisition and Observation Mode

1.3 Discussion on the Cause of Notching

1.4 Discussion of Impact on Processing of Relative Fidelity Preservation Seismic Data for Seismic Acquisition and Observation Mode

1.5 Comparison of Results of High-resolution, High SNR Processing and Relative Fidelity Preservation Processing

1.6 Elastic Wave Forward Modeling

1.7 Conclusions

References

Chapter 2 Method and Principle for Seismic Migration and Imaging

2.1 Kirchhoff Integral Prestack Depth Migration

2.1.1 History of Kirchhoff integral prestack depth migration

2.1.2 Implementation principle of Kirchhoff integral method prestack depth migration

2.2 Amplitude Preservation Fourier Finite Difference Prestack Depth Migration Method

2.3 Reverse Time Migration

2.3.1 Isotropic reverse time migration

2.3.2 Anisotropic reverse time migration of VTI media

Chapter 3 Study of Reverse Time Migration Method for Areas With Complicated Structures Based on the GPU/CPU System

3.1 Introduction

3.2 The GPU/CPU High0performance Calculation and Its Application in Seismic Exploration

3.2.1 Introduction of the GPU/CPU system

3.2.2 GPU/CPU high-performance computing and the application in seismic exploration

3.3 Study on the Two-way Wave Extrapolation Operator and Its Boundary Conditions

3.3.1 High-order difference method

3.3.2 Boundary condition issue of reverse time migration

3.4 Study on the Imaging Condition and Low-frequency Noise Suppression Method

3.4.1 Study on imaging condition and low-frequency noise generation mechanism.

3.4.2 Theory and application of Laplace filtering suppressing low-frequency noise

3.5 Study and Application of RTM Prestack Imaging Algorithm based on the GPU/CPU System

3.5.1 Analysis of structural characteristics of the GPU/CPU platform

3.5.2 Analysis of the application features of CUDA programming language in the GPU/CPU platform

3.5.3 Realization strategy of RTM prestack imaging based on the GPU/CPU

3.6 Conclusions

Chapter 4 Study and Application of Velocity Model Building Method for the Areas with Complicated Structures

4.1 Introduction

4.2 Status Quo and the Development of the Velocity Model Building Method

4.3 Impacting Factors for the Velocity Model Building

4.3.1 The influences of initial velocity model accuracy on velocity modeling

4.3.2 The influences of static correction on velocity modeling

4.3.3 The influences of SNR on velocity modeling

4.3.4 The influence of prestack data irregularity on velocity modeling

4.3.5 The influences of geological body on velocity

4.3.6 The influences of subsurface structural features on velocity

4.3.7 The influences of media lateral anisotropy on velocity

4.3.8 The influences of multiples on velocity

4.3.9 Analysis of the accuracy of various velocity calculating methods

4.4 Study and Application of the Seismic Velocity Model Building Method

4.4.1 Modeling method based coherence inversion velocity

4.4.2 Constructing velocity field with root mean square (RMS) velocity conversion and cycling method

4.4.3 CIG gathers velocity modeling

4.4.4 Velocity modeling by seismic tomography (ST) method

4.4.5 Velocity modeling of CFP gathers

4.4.6 Multi-information restricted interval control velocity modeling method

4.5 Quality Monitoring and Accuracy Discussion of the Seismic Velocity Model Building.

4.5.1 Velocity model under logging data constraint

4.5.2 Velocity modeling constrained by geological structure pattern

4.5.3 Optimization of the velocity model under seismic imaging constraint

4.5.4 Constraint from migration algorithm

4.5.5 Velocity model accuracy and imaging effect evaluation method

4.6 Velocity Analysis Method for Reverse Time Migration in Angle Domain

4.6.1 Generation of CIP gathers in angle domain from reverse time migration

4.6.2 Angle domain velocity analysis method

4.7 Study of the Full Waveform Inversion Method

4.7.1 Study status of full waveform inversion

4.7.2 Gradient guidance full waveform inversion

4.7.3 FWI discussion and further development trend

Chapter 5 Case Study

5.1 Application of 3D Prestack Reverse Time Migration in Subsalt Imaging

5.1.1 Main problems challenging subsalt seismic survey

5.1.2 Features of the Pre-Caspian Basin and its seismic geological conditions

5.1.3 Geologic structure of the Pre-Caspian Basin

5.1.4 Sedimentary evolution and stratigraphic characteristics of the basin

5.1.5 Analysis of subsalt seismic data features

5.1.6 Difficulties in seismic imaging of subsalt structure and analysis of the problems

5.1.7 Quantitative identification to subsalt pseudo-structure by forward modeling

5.1.8 Research on subsalt seismic velocity modeling and imaging method

5.1.9 Comparison and research on reverse time migration imaging effect

5.1.10 Study on subsalt structure features and description of major traps

5.2 Application of High-density All-round Seismic Data Processing in the Carbonatite Region

5.2.1 General

5.2.2 Research concept and technical strategy

5.2.3 Key processing techniques

5.2.4 Analysis of difficulty tackling effect

5.2.5 Conclusions and understandings.

5.3 Application of Seismic Imaging Method for Complicated Structures in the Tuha and Jiuquan Basins

5.3.1 Overview

5.3.2 Key techniques

5.3.3 Application effect and actual survey effectiveness

5.3.4 Conclusions and understanding

5.4 Application of the Seismic Prestack Imaging Method in the Buried Hill Structural Zone in the Nanpu of Jidong Oilfield

5.4.1 Overview of the project

5.4.2 Research route and technical measures

5.4.3 Key processing techniques

5.4.4 Analysis on research and processing effects

5.4.5 Conclusions and understanding

Index

EULA.

Notes:

Includes bibliographical references at the end of each chapters and index.

Description based on print version record.

ISBN:

9781119052920

1119052920

9781119052913

1119052912

OCLC:

961457710