2. Instructor of the workshop
Geophysicist Hesham Helmy
Ahmed
A five-days training course
Course Description
The overall objective is to introduce Exploration Geologists
,Junior Geophysicists and Reservoir Engineers to the key
concepts and principles that form the technical basis for the
different geophysical techniques and geologic structures ,and
value added seismic applications in exploration, field appraisal,
and reservoir management. For most of us, teamwork is a part
of everyday life. Whether it's at home, in the community, or at
work, we are often expected to be a functional part of a high
performing team. This course explains the role of the
Exploration Team in an Oil company, defining the role of each
of its team members, how they interact, and what specialised
data each role requires to be an effective team member.
Emphasis will be on the role of the Geophysicist in the tem
,with explanations of different Geophysical tools ,and wide
explanation of Seismic tool.
Emphasising synergistic team work, participants will after this
training course be able to
Explain the basic principles of seismic wave propagation
Explain the principles of the seismic system
Understand theoretical principles ,different marine and
land seismic DATA ACQUISITON.
3. Understand theoretical principles ,different marine and
land seismic DATA PROCESSING .
Understand theoretical principles ,different marine and
land seismic data Interpretation (through exercises)
Well seismic data (types ,and their benefits) with
exercises ,and illustrations.
Describe the principles and role of special seismic
techniques such as Seismic
Attributes ,Inversion ,Tomography AVO and Shear
waves.
Describe seismic rock properties
The course design allows ready adaptation to shorter or longer
versions and direct linkage to advanced treatment of specific
topics.
Audience
Geologists ,Junior Geophysicists and Reservoir Engineers.
Workshop Outline
DAY 1
Session 1: Introduction Seismology Theory
After this session, participants will be able to
Explain Seismic Wave Propagation Principles
including
o Wave theory
o Different types of seismic waves
o The physical properties and applications of
different Seismic Waves
Describe and explain different seismic data (2D,3d)
survey techniques and applications.
4. Session 2: Brief idea about Seismic Data
Acquisition ,Processing and Well Seismic Data
After this session, participants will be able to
Explain briefly seismic surveying &processing
including
o What is data acquisition ?
o What processing principles ?
What is Seismic well Data ?
Session 3: Introduction to Regional Geophysical
tools ,Prospect Generation elements &Exploration
Team WORK
After this session, participants will be able to
Satellite Images ,Gravity & Magnetic methods as
Regional tools.
Source ,Reservoir ,seal and Traps types and risk
assessment for prospects
Exploration team members ,how cooperation can be
done?
Session 4: Rock Physical Properties
After this session, participants will be able to
State key concepts of Rock Physics 101including
describing
o Physical properties of different rocks
o The interaction of Rock properties and seismic
waves
State and explain
o Methods of seismic data acquisition and their
processing methods
DAY 2 Seismic Data Interpretation
Exercises
5. In this one day Workshop, participants will be presented
with data, which requires them construct a Structure Map ,
using their acquired Day1 knowledge and skills to make
recommendations for drilling and initial estimates of oil in
situ results obtained by
seismic well data usage for tying wells with seismic.
seismic interpretation for Inlines & crosslines
mapping horizons
mapping faults
Building structure map with well recommendations.
TWO Exercises required to be done (one on marine data ,the
other on Land data.
Day 3 SeismicData Acquisition &
Processing
Session 1: Acquisition Principles and
Implementation
In this session, participants will learn
Effect of acquisition on interpretation
Spatial sampling and aliasing
Noise types
How to attenuate noise in the field.
Session 2: Land & Marine Surveys
In this session, participants will learn
Survey sources
Review of recording instruments.
Session 3: 2D & 3D acquisition
In this session, participants will learn
Advanced methods of multi -azimuth acquisition
o (MAZ ,WAZ ,RAZ ,FAZ) ,and OBC
Types of surveys and their applications
Advanced acquisition technologies
Session 4: Seismic Data Processing:
In this session, participants will learn
6. Data processing flows (data Reduction ,Geometric
corrections ,Data Enhancement ,Migration
Data processing techniques
o Demultiplexing ,Gain
Recovery ,Edit ,Summing ,Cross correlation
and Gain Function
o Sorting, Static and Dynamic (NMO)
corrections ,Residual statics and residual NMO
o Velocity filtering
Multiple attenuation (different types of Multiples &
Deconvolution)
Filtering (TVF filter ,Band pass filter ,Dip filtering) &
Mute
Display and time migration options,
Data enhancement
DAY 4 Seismic Data Processing
Session 1: Seismic Data Processing steps
In this session, participants will learn
Data processing flows (data Reduction ,Geometric
corrections ,Data Enhancement ,Migration
Data processing techniques
o Demultiplexing ,Gain
Recovery ,Edit ,Summing ,Cross correlation
and Gain Function
o Sorting, Static and Dynamic (NMO)
corrections ,Residual statics and residual NMO
o Velocity filtering
Multiple attenuation (different types of Multiples &
Deconvolution)
Filtering (TVF filter ,Band pass filter ,Dip filtering) &
Mute)
time migration ,and display options.
Data enhancement
Advanced Processing Techniques
7. DAY 4 (afternoon ),DAY 5 Seismic
Technologies
Session 1: Theory and Applications:
In this session, participants will learn…..
relation between various rock properties Shear wave
and fracture detection.
Pressure Detection using Seismic
Bright spot ,flat spot ,Seismic Attributes ,4D (all
accompanied with case histories).
AVO (amplitude versus offset) & Inversion (Theory and
case histories)
shear waves with its applications for oil & gas
exploration including fracture detection.
Seismic stratigraphy
Session 2: Borehole Seismic Surveying &
Tomography
In this session, participants will learn the advantages and
limitations of 4 forms of Vertical Seismic Profiling
Standard Vertical Seismic Profiling (VSP)
Deviated well VSP
Offset VSP
Walkaway VSP
Check shot survey
Seismic Tomography
Inter wells Resistivity
Rest of DAY 5: Attendees General questions & my
answers about any topic in the course.
Instructor
8. GeophysicistH.H. Ahmed, General Manger
GUPCO
has been graduated as Geologist from Ein-Shams
University, Egypt in1979. He has more than 34
years
experience as geophysicist in oil & gas industry.
24 years in seismic interpretationonshoreand
offshore
Gulf of Suez, Western Desert and Nile Delta (.well
recommendationsand post
appraisals).
7 years in seismic technology. Has developed a
technology for pressure detectionusing seismic
data.
Worked with Amoco research teams in Houston
(TX.) and
Tulsa (OKL.) in joint technology projects.
4 years in seismic data acquisition and processing.
Mr . H.H. Ahmed attendedseveral training courses
during his professional career:
-Seismic interpretation (MERLIN) / -Technical
report
writing (AMERICAN UNI.) / -Seismic field
techniques
(GEOTRAN-ENGLAND) / -Effective seismic data
9. processing (GEOTRAN-ENGLAND) / -Principles
of
petroleumgeology and subsurface mapping
(IHRDC) /
-Gravity & magnetics (IHRDC) / -Reservoir eng.
for
Geoscientists (IHRDC) / -Seismic stratigraphy
(IHRDC)
/ -Classic petrology (IHRDC)
Software usage:
-Land Mark Packages (Seisworks, Zmap, Ssam and
Syntool)