Oil & Gas Training
and Competency Development

Discipline Geophysics
LevelSkill
Duration5 Days
Delivery Mechanism Classroom
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Course Progression Map - Marine Seismic Processing

Course Progression Map - Land Seismic Processing

Seismic Acquisition and Processing

4.4 Average client rating (based on 52 attendee reviews)

The overall objective of this course is to introduce entry level and/or junior Geophysicists and Geoscientists to the essential acquisition and technical processing concepts and principles that form the basis for value added seismic applications in exploration, field appraisal, and reservoir management. Learning objectives are at foundation and  knowledge levels.

Emphasis is on practical understanding of seismic acquisition and imaging. Data examples, exercises, and workshops are used to illustrate key concepts, practical issues, and pitfalls of acquisition and processing as they affect the interpretation and integration of seismic data and information into E&P workflows.

  • Agenda
  • Topics
  • Audience
  • Prerequisites
  • Agenda

    Day 1

    Module 1 – Introduction

    Objectives –How seismic data assists today’s E&P - 2D vs 3D - Interpreting Seismic Data – Size of operations - Issues & Concerns

    Module 2 – Basic Concepts of Seismic Surveying

    What makes a seismic trace – Body & Surface waves - Reflection and refraction - Basics of seismic fold and image or stacked traces – Stacking Diagrams

    Module 3 – Seismic Wave Propagation

    Principles of wave propagation - Physical basis of wave types – Huygens‘s principle - Refractions and Diffractions - Seismic Velocities - Reflection amplitude, converted waves and AVO

    Module 4 – Signal Analysis

    Waves in time and space, Frequency and Wavenumber, Fourier analysis - Aliasing both spatial and temporal – FK transform - Convolution - Cross & Auto correlation.

    Day 2

    Module 5 – Seismic Reflection Principles

    Properties of Seismic Waveforms and traces – Polarity - Vertical Resolution – Lateral Resolution – Tuning - Amplitude Effects

    Module 6 – Field Data Acquisition Principles

    Types of Seismic Data Acquisition – Marine, Land, Transition, Borehole, Ocean Bottom, TimeLapse – Signal and Noise – Field Array Design – Alternatives to arrays – Common Reasons for Failure

    Module 7 – Marine Acquisition Systems and Operations

    Overall Layout – Towing Technology - Sources – Receivers – Benefits of Single sensor recording - Streamer Positioning – Narrow, Wide & Multi Azimuth - Over Under / DISCover – Slanted Cables - Gradient Measurements – Ocean Bottom Recording - Simultaneous Sources - Quality Assurance

    Module 8– Land Acquisition Systems and Operations

    Sources – Sensors – Positioning - Recording the Data – Arrays or Single Sensor Recording – Full Azimuth recording - Simultaneous Sources – Industry Trends Quality Assurance

    Day 3

    Module 9 – Near-Surface Distortion Correction

    Causes of Distortions – Seismic Datum – Long & short wavelength statics

    - Surface Consistency - Methods of Correction – Identifying errors

    Module 10 – Wavelets and Wavelet Shaping

    Reasons why Wavelet Shaping is necessary – Types of wavelets – Zero & Minimum phase

    - Types of Deconvolution - Decon.’s place in the sequence – Examples.

    Module 11 – Regularization

    The need for regularization – Types of methods used – Cautions - Examples

    Module 12 – Noise Attenuation

    Noise Types – Noise Removal Methodologies – Organised Noise – Radon Transforms

    - Seismic Interference - Random Noise – Examples

    Module 13 – Multiple Attenuation

    What are multiples? – Types of multiple - Classifications and examples of removal methods

    More (different) Radon Transforms – Data Examples

    Day 4

    Module 14 Velocity Analysis for Time Processing

    Types of velocity – NMO stretch – Velocity Analysis Techniques – Potential pitfalls

    Module 15 – Velocity Model Building

    Importance of velocity - Types of Model geometries – Tomography – Velocity model building techniques – Diving Wave, Tomographic, Complex Salt, Full Waveform Inversion, Multi Azimuth

    Module 16 Imaging

    Differences between Time and Depth Imaging – Limitations of Post stack imaging - Current Imaging Techniques - Their strengths and weaknesses - Examples – Likely future trends

    Module 17 Imaging with Anisotropy

    What is anisotropy? – How is it caused – Thomsen’s parameters – Different types of anisotropy – Rules of thumb - Examples

    Day 5

    Module 18 – Survey Design

    Survey Objectives – Geophysical & Processing Considerations

    – 3D Surveying – CMP distribution – Binning – Critical Survey parameters

    – Calculating their values - Survey Size Calculations – Migration Apertures – Artifacts and Footprints

    Recap and Review

  • Topics

    Understand seismic fundamentals as they affect the interpretation of seismic data.

    Understand the concepts involved in imaging geologic structures and properties through seismic data acquisition and processing.

    Comprehend the parameters that can seriously affect seismic data quality and costs.

    Be familiar with ways to determine whether seismic data has been recorded and processed in a technically correct manner for subsurface objectives.

    Communicate effectively with seismic specialists.

  • Audience

    Entry or Junior Level Geophysicists and more experienced staff who interpret seismic data and need exposure to  acquisition and processing techniques

  • Prerequisites

    Basic understanding of Reservoir Geology and Geophysics

  • Prerequisites

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