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Technical Workshop on
Seismic Exploration For
Geologists & Engineers
Instructor of the workshop
Geophysicist Hesham Helmy
Ahmed
A five-days training course
Course Description
The overall obje...
Understand theoretical principles ,different marine and
land seismic DATA PROCESSING .
Understand theoretical principles...
Session 2: Brief idea about Seismic Data
Acquisition ,Processing and Well Seismic Data
After this session, participants wi...
In this one day Workshop, participants will be presented
with data, which requires them construct a Structure Map ,
using ...
Data processing flows (data Reduction ,Geometric
corrections ,Data Enhancement ,Migration
Data processing techniques
o Dem...
DAY 4 (afternoon ),DAY 5 Seismic
Technologies
Session 1: Theory and Applications:
In this session, participants will learn...
GeophysicistH.H. Ahmed, General Manger
GUPCO
has been graduated as Geologist from Ein-Shams
University, Egypt in1979. He h...
processing (GEOTRAN-ENGLAND) / -Principles
of
petroleumgeology and subsurface mapping
(IHRDC) /
-Gravity & magnetics (IHRD...
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My Course

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My Course

  1. 1. Technical Workshop on Seismic Exploration For Geologists & Engineers
  2. 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. 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. 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. 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. 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. 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. 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. 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)

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