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Exploration Seismology
Rating: 3.9 out of 5(21 ratings)
89 students

Exploration Seismology

Including Field, Processing and Interpretation Tasks
Created byMohamad Samir Al Nahhas
Last updated 2/2021
English
English [Auto],

What you'll learn

  • Students will learn the Lithology and Rock Physics
  • they will learn about the Elastic Theory and wave propagation
  • Seismic Reflection Theory and its application in acquisition
  • The course covers the key theories to ensure optimum data quality
  • The participants will then learn the most important terms of seismic data acquisition and interpretation techniques
  • The course will covers 2D, 3D, acquisition and processing
  • The Interpretation steps will be discussed for 2D and 3D data, allowing for optimizing the Velocity concepts to be used

Course content

1 section • 21 lectures • 2h 49m total length

  • Introduction3:38

    Explore seismic data acquisition, processing, and interpretation in 2d and 3d, and learn rock physics, porosity, density, and seismic velocity to understand wave propagation, reflection, and refraction.

  • 1.1 The petroleum Geology2:21

    1.2) The petroleum Geology

  • 1.2) The petroleum Geology5:52

    1.3) The petroleum Geology

  • 2.1) Seismic Data and Elasticity NV4:12

    2.2) Seismic Data and Elasticity

  • 2.2) Seismic Data and Elasticity9:02

    Explore seismic data and elasticity by defining stress and strain, deriving the elastic wave equation, and contrasting compressional P waves with shear waves under Snell's law.

  • 3.0) Noise analysis9:41

    4.1) Seismic Data Acquisition

  • 4.1) Seismic Data Acquisition9:55

    Explore seismic data acquisition methods across land and marine environments, including dynamite and hydraulic vibrators, and see how reflections from impedance contrasts guide processing and interpretation.

  • 4.2) Seismic Data Acquisition27:05

    Explore onshore seismic data acquisition, detailing shot and receiver geometries, symmetrical split shooting, overlapping subsurface coverage, and noise analysis for optimal signal to noise ratio.

  • 4.3) Seismic Data Acquisition6:46

    Learn how marine seismic data acquisition uses airguns as sources and hydrophones as receivers to record pressure signals, with streamer cables deployed along predefined lines and depth control units.

  • 4.4) Seismic Data Acquisition1:30
  • 4.5) 3D Seismic Data Acquisition14:18

    Explore why three-dimensional seismic data acquisition and three-dimensional migration improve interpretation over two-dimensional, with design stages, receiver lines, shot patterns, and cross-section visualization.

  • 5.1) Processing of Seismic Data.5:41
  • 5.2) Processing of Seismic Data9:43

    Explore seismic data processing workflows tailored to signal-to-noise characteristics, geological environment, and project goals; learn reformatting, multiplexing, editing, muting, noise attenuation, and migration to locate true subsurface features.

  • 5.3) Processing of Seismic Data.9:43

    Explore seismic data processing workflows, from selecting sequences based on signal quality and environment to reformatting, multiplexing, editing, muting, attenuation, and migration for true subsurface locations.

  • 5.4) Processing of Seismic Data11:53

    Apply geometry corrections to seismic data, removing near-surface effects with static and dynamic corrections. Estimate stacking velocities and velocity functions to flatten reflections and produce a coherent stack.

  • 5.5) Processing of Seismic Data9:07

    Explore seismic data processing by transforming time-domain recordings to the frequency domain using the Fourier transform, and apply deconvolution, scaling, and filtering to separate signal from noise.

  • 5.6) Processing of Seismic Data7:23

    Learn seismic data processing and how multiples—organized noise from multiple reflections—are generated and attenuated. The lecture covers water and salt generators and attenuation in time, fk, and thorpedo domain stacks.

  • 5.7) Processing of Seismic Data5:41

    Explore seismic data processing through migration, moving events to true locations and collapsing distorted sections. See improved imaging of anticlines and salt domes with time, partial, and full migrations.

  • 6.1) Interpretation of Seismic Data4:40

    Correlate seismic reflections with horizons and map time horizons line to line using well data, sonic logs, density, and velocities, while incorporating vertical seismic profile data for interpretation.

  • 6.2) Interpretation of Seismic Data7:14
  • 6.3) Interpretation of Seismic Data4:07

Requirements

  • Basic knowledge of the geophysical methods especially the reflection seismic method

Description

This course will start with an Introduction to Lithology and Rock Physics, the Elastic Theory, wave propagation, followed by the Seismic Reflection Theory and its application in acquisition. The course covers the key theories to ensure optimum data quality, and these will be discussed along with practical examples and exercises in order to improve the participants’ skills when it comes to selecting the acquisition and processing parameters. This will be followed by an overview of the best practices and the most recent seismic 2D and 3D data interpretation technologies used onshore and offshore. The participants will then learn the most important terms of seismic data acquisition and interpretation techniques, how to see Faults, reflections and diffractions, and to do Contour Maps parameters in their own operations and in different environments using the latest techniques in order to allow them to do better interpretation in their areas. The Interpretation steps will be discussed for 2D and 3D data, allowing for optimizing the Velocity concepts to be used.

Target Participants

This course is intended for exploration, multi discipline interpreters, operation and interpretation geophysicists, geologists involved in seismic data acquisition and processing, and also targeted processing analysts who participate in the selection of seismic data acquisition and processing parameters, whether it be supervision or the more practical side. The participants must have some knowledge in the basics of geophysics and seismic methods.

What you will gain

  • Better understanding of geological terms in order to improve participants’ interpretation of seismic data.

  • A clear understanding of the main geophysical terms, resolution, correlation, aliasing in time and space domains ...etc.

  • Knowledge of key tools/techniques to assist in the selection of field acquisition and processing parameters.

  • The opportunity to design, practise, and evaluate the data quality in challenging environments.

  • A comprehensive knowledge of the new acquisition and processing techniques and improvement of practical skills, providing participants with confidence and the ability to supervise such projects.

  • Understanding methodology of seismic data structural and stratigraphic interpretation and its application.

Who this course is for:

  • Field Seismologists
  • Graduated Geophysics students
  • Geophysicist and Geologists
  • Oil and Gas technical Exploration employees

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