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Seismic Migration
	Instructor	Tuition
	Dr. Hua-Wei Zhou University of Houston	$2000

Course description

Seismic migration is a key tool for constructing subsurface imagery based on industry seismic data. This short course aims to examining the basic methodology and underline geophysical principles of seismic migration. Some common migration methods, such as Kirchhoff, phase-shift, and full-wave migration, will be studied and illustrated with literature examples. Relevant topics to be discussed include pre-processing of migration data and velocity model building. In particular, the dependency of migration on the velocity-depth model and migration velocity analysis will be analized. The course will focus on principles, practicality, and future directions of seismic migration.

Who Should Take this Course?

Students in applied geophysics and employees of the petroleum industry, particularly those who deals with seismic migration as processors or interpreters, as well as anyone who is interested in the methodology of subsurface imaging using reflection seismology.

Course outline

This course will be delivered following a set of class notes by Dr. H. Zhou titled "Seismic Migration." The chapters are:

Date	A.M. Session (8a.m. - noon)	P.M. Session (1:30p.m. - 5:30p.m.)
06/15/09	1a. Intro to migration (ItM) Objective, assumptions & history Pre-processing for migration Classification of seismic migration Stress & strain tensors in continuum Seismic wave equation	1b. Kirchhoff migration (Kir) Decomposition, superposition & Kirchhoff mig. Phase correction, weighting & anti-aliasing Amplitude preservation Seismic velocity measurements & trends
06/16/09	2a. Frequency-domain migration (FkM) Post-stack f-k migration Pre-stack f-k migration Phase-shift, PSPI & PSPC Split-step f-k migration	2b. Refraction Velocity Analysis (RVA) Standard 1D Earth models Traveltime versus distance graph Ray-tracing with 1D reference model Ray-tracing in 2D & 3D models Intro to tomography
06/17/09	3a. Finite difference migration (FDM) Approximations of up-going wave eqn Introduction to waveform modeling Finite differencing wave equations Examples of Finite difference migration	3b. Semblance Velocity Analysis (SVA) CMP, NMO & Semblance velocity analysis The Dix formula & issues of SVA Migration of refraction data Velocity anisotropy
06/18/09	4a. Pre-stack depth migration (PSDM) Why PSDM: Large lateral velocity contrast Kirchhoff PSDM Reverse time migration One-way & two-way wave-eqn migration	4b. Migration & regularization (MiR) Wavelet-domain migration & Pulse distortion Least squares (LS) migration LS migration of incomplete data Equalization of imaging operators
06/19/09	5a. Migration Velocity Analysis (MVA) Focus analysis Velocity-depth ambiguity CIGs & migration velocity analysis Course Exam	5b. Tomographic Velocity Analysis (TVA) Artifacts & resolution test in tomography Single-scale versus multi-scale tomography Deformable-layer tomography Constrained tomography