Reflection Seismology
Geology 4068
Fall 2005
Dr. Juan M. Lorenzo
Department of
Geology and Geophysics
Lecture times Tuesday and Thursday E207 9.30-10.30 a.m. and Friday 12.30 -3.30 p.m. E217 Subsurface Lab; 27 lectures; 12 lab sessions; 2 field days Office hours Tuesdays 2-4 p.m., Room 215 (Old Howe-Russell Building)
Required textbook
Elements of 3-D seismology by Chris L. Liner, 2004, 608 pp. Second Edition (Table of Contents)
Goals:
Introduction to 2D and 3D seismic data acquisition, processing and limitations of seismic interpretation in the context of oil and gas and, and shallow, environmental seismology.
Field work Two Saturdays collecting seismic reflection and refraction data. A 24-channel land-cable 2D system and a 3D radio-telemetry system will be available. Field trips are integral and hence compulsory for the class. If rain prevents a field trip we will schedule it for another Saturday. Course work Weekly homework, a field-based seismic processing project, one midterm and one final in-class exam.
Tuesdays and Thursdays will be dedicated to the presentation of concepts covered by the course textbook and Fridays will be dedicated to laboratory exercises using academic and industrial seismic processing software in the Subsurface Laboratory (E217). Lab work will include processing of an original data set collected by during field trips. All homeworks and lab exercises, with the exception of the final project, are due one week after they are handed out, at the beginning of each class.
Recommended prior courses or experience Math I, II , Physics-I, programming experience with a high-level language like Excel,Matlab, Maple, etc. Web navigation
Course Grades Final letter grades are calculated using the results of weekly lecture homework and in-lab exercises (35%), a midterm exam (15%), a final openbook exam (15%) and a course project (35%). A (90-100%) , B (80-89.5%), C (60-79.5%) D (50-59.5%), F (less than 49.5%) Graduate students taking this course will be held to a higher standard, commensurate with their academic seniority. Tentative Lectures by industry geophysicists. Lectures In Powerpoint format, in MSWord format and as old html files, . Program Downloads Matlab programs for lectures ---> SEA (self-expanding archive)
AUGUST
Lectures Tue 23 Introduction to the Course-- Background quiz and poll Thu 25 General Properties of Waves Ch. 1 Notes Fri 26 Lab exercises Tue 30 Hurricane KATRINA
SEPTEMBER
Lectures Thu 1 Hurricane KATRINA Fri 2 Hurricane KATRINA Mon 5 LABOR DAY Holiday
Tue 6 Review of General Properties of Waves (updated 9.6.05) Ch. 1 Notes Thu 8 Waves in Fluids Ch.2 Acoustic Wave Equation; Elastic Moduli; Fri 9 linux review
matlab tutorial - Xcel macro for Vrms,Vavg and Vbackus
Lab exercises Tue 13 S eismic Events - I Ch. 3 Homework # 2 due Tue 20 Thu 15 Seismic Events-II Ch. 3 Fri 16 More filtering, AGC, hyperbolae equations, spikes Lab exercises Tue 20 Seismic Events-III Ch. 3 Thu 22 Seismic Events-III Ch. 3 Notes on Resolution
Homework #3 due Oct. 4 Fri 23 Filter analysis (linux and S*nix) Phase effects (Matlab)
Basic Exercises Sat 24 radio-telemetry field exercise FIELD TRIP to PERTT Lab-LSU -postponed because of hurricane RITA Tue 27 Seismic Events-IV G CAGS-New Orleans 25-27(cancelled because of hurricane KATRINA) Thu 29 Seismic Events-V Fri 30 radio-telemetry field exercise FIELD TRIP to PERTT Lab-LSU
OCTOBER
Lectures Tue 4 Seismic Events-VI Answers to Homework #3 on resolution Thu 6 Fall holiday - no class Fri 7 Fall holiday - no class Tue 11 Seismic Data Acquisition-I due Tue. 18 CMP Homework#4 Q&A; Thu 13
Data Processing -- Binning Fri 14 SeisWide and mmodpg
I nteractive raytracing of reflected and refracted arrivals Tue 18 Seismic Data Acquisition-II GSA 16-19 Thu 20 Seismic Data Acquisition-III Fri 21 mmodpg Interactive Modeling Sat 22 2D landstreamer experiment
TJHughes line
FIELD TRIP Tue 25 Mid-semester exam Homework 4 Question and Answers Thu 27 Seismic Data Acquisition-IV Fri 28
S*nix: susort,sukill,suwind to prepare a seismic data set for modeling
modeling with mmodpg
Exercise on susort,sukill and suwind due on Fri. 4th November
NOVEMBER
Lectures Tue 1 Seismic Data Acquisition-V Thu3 Seismic Data Acquisition-VI homework 5 due 11-11-05 Fri 4 Processing of line streamer data collected on 10-22-05 Tue 8 Seismic Processing-I SEG Houston 6-11 Thu 10 Seismic Processing-II Fri 11 Processing landstreamer data II Trace Header geometry- sushw, suchw Homework 5 solution 1 and alternative solution 2
Tue 15 Making CMP's Ch. 16 Thu 17 Making CMP's Fri 18 Processing landstreamer data III Tue 22 Making CMP's-DMO Thu 24 Thanksgiving Holiday-- no class Fri 25 Thanksgiving Holiday-- no class Tue 29 Making CMP's
DECEMBER
Lectures Thu 1 Making CMP's Fri 2 Finish Class Project
NMO stretch (See end of Making CMP Notes) Tue 6 M igration-I Theory Ch. 17-18 Thu 8 M igration-I Friday9 Final openbook exam due Mon 12, 2005 at 4.30 p.m.
Written project due no later than 5.00 p.m. (soft deadline) or
midnight (hard deadline)
Leave in mailbox (E235 Howe-Russell) or e-mail. Tue 13 EXAM WEEK Thu 15 EXAM WEEK