World-class training for the modern energy industry

Onshore Seismic Processing and Imaging (G081)

  • TypeType: Classroom, Virtual
  • TypeDiscipline: Geophysics
  • TypeDuration: 2 days

Tutor(s)

Ron Kerr, Independent seismic processing QC consultant and David Kessler, President of SeismicCity.

Overview

This course will introduce the fundamentals of land seismic acquisition including receiver types and their spectrum indication. Land-based seismic data presents unique challenges, and the course will subsequently follow the processes after acquisition to include all the main processing steps of a modern land 3D dataset.

Duration and Logistics

Fundamental. Intended for geoscientists who work with seismic data and are also required to understand land seismic acquisition and processing projects and work with imaging professionals.

Objectives

You will learn to:

  1. List common onshore seismic source and receiver types and their spectrum indication.
  2. Describe source/receiver line spacing & intervals and their relationship to acquisition footprints and seismic resolution.
  3. Have a clear picture of main processing steps affecting phase and amplitude and understand the concepts of surface-consistency.
  4. Explain in plain language how FWI works and the key factors to velocity model building.
  5. List the types of data used in data processing.
  6. Identify the main components of the seismic wavefield and what they are used for.
  7. Describe the main collections/domains for manipulating seismic data.
  8. Explain the main steps in a processing sequence.
  9. List the main types of noise and describe attenuation methods for these.
  10. Describe the various velocities used in seismic and how to access them.
  11. Identify multiples and explain methods to attenuate them.
  12. Discuss the need for regularization.
  13. Describe the migration process and list the difference between Time/Depth Migrations.

Level and Audience

Classroom version: A 2-day classroom course day including a mix of lectures and exercises. The manual will be provided in digital format and participants will be required to bring a laptop or tablet computer to follow the lectures and exercises.

Virtual version: Four 3.5-hour interactive online sessions presented over four days (mornings in North America and afternoons in Europe). Digital course notes and exercise materials will be distributed to participants before the course. Some exercises may be completed by participants off-line.

A 2-day classroom course day including a mix of lectures and exercises. The manual will be provided in digital format and participants will be required to bring a laptop or tablet computer to follow the lectures and exercises.

Virtual version: Four 3.5-hour interactive online sessions presented over four days (mornings in North America and afternoons in Europe). Digital course notes and exercise materials will be distributed to participants before the course. Some exercises may be completed by participants off-line.

Course Content

Session 1: Onshore seismic data acquisition and processing

We will start with the basics and fundamentals of land seismic acquisition and an overview of basic seismic terms. Common onshore seismic source and receiver types and their spectrum indication will be presented.

We will provide a clear picture of main processing steps affecting phase and amplitude and understand the concepts of surface-consistency. These steps include explanation of all the terms you may have heard of but might not be entirely familiar in understanding including refraction statics, denoise, deconvolution, velocities, and 5D interpolation, as well as many steps that are not as well-known such as: geophone compensation, geometry qc, and residual statics. The main types of noise will be shown and we will describe attenuation methods.

The various data types used in data processing will be presented. Reviewing the main steps included in a processing sequence, data examples will be used. This includes data regularization. The examples include simplified graphics and real-data examples. This behind-the-scenes look is important; decisions made during pre-processing can affect any prospect. You will learn why these steps are run and what to look for when a vendor is processing your land dataset. No math is required.

Session 2: Seismic wave propagation, migration, velocities, anisotropy and model building

We will start this session by reviewing seismic wave propagation in Elastic media. Seismic forward modeling describes wave propagation in the sub-surface is inherent in processing. We will identify the main components of the seismic wavefield and what they are used for.

Using both wave and ray equations, we move to discuss how these equations are used for application of depth migration. We will describe how ray based and wave-based migrations work and will explain the differences between RTM based on the acoustic wave equation and the elastic wave equation. The difference between Time and Depth Migration will be explained.

Next, we will cover the foundations and use of velocity estimation techniques and will analyze the advantages and limitations of each. We will describe the various velocities used in seismic imaging and how to they are constructed from the seismic data. We will demonstrate ray-based reflection tomography as well as wave based Full Waveform Inversion (FWI). Special attention will be given to describe how each method is used in velocity model building.

We will then review anisotropy used in seismic processing and imaging. A complete workflow including all steps used in model building and depth imaging project will be provided.

 

Courses

Upcoming Courses

Explore More
Calendar15 - 18 Apr 2024
LocationVirtual
TutorsMark Ireland

Geothermal Sedimentary Systems: Exploration, Development and Production Principles (E574)

Price
GBP £1,800.00 excl VAT
Register
Calendar15 - 17 Apr 2024
LocationVirtual
TutorsRichard Jones

An Introduction to Geospatial Workflows (E510)

Price
GBP £1,350.00 excl VAT
Join waiting list
Calendar22 - 25 Apr 2024
LocationVirtual
TutorsRichard Swarbrick

Seals, Containment and Risk for CCS and Hydrogen Storage (E570)

Price
GBP £1,800.00 excl VAT
Join waiting list
Calendar13 - 17 May 2024
LocationVirtual
TutorsDavid McNamara

Geology and Fractures for High Enthalpy Geothermal (E507)

Price
GBP £1,950.00 excl VAT
Join waiting list
Calendar20 - 24 May 2024
LocationVirtual
TutorsRichard Worden

Carbon Capture and Storage Masterclass (E502)

Price
GBP £1,950.00 excl VAT
Register
Calendar10 - 12 Jun 2024
LocationHouston
TutorsMalcolm Ross

Transition Skills: From Oil and Gas to Geothermal (E573)

Price
USD $3,000.00 excl VAT
Register
Calendar10 - 13 Jun 2024
LocationVirtual
TutorsRichard Swarbrick

Introduction to Subsurface Pressures (G085)

Price
GBP £1,950.00 excl VAT
Register
Calendar17 Jun 2024
LocationVirtual
TutorsKevin Taylor

The Fundamentals of Hydrogen Energy (E903)

Price
GBP £440.00 excl VAT
Register
Calendar24 - 27 Jun 2024
LocationHouston
TutorsRachel Newrick, John Randolph

Practical Seismic Interpretation (G027)

Price
USD $4,500.00 excl VAT
Register
Calendar25 Jun 2024
LocationVirtual
TutorsRichard Worden

The Fundamentals of Carbon Capture and Storage (E902)

Price
GBP £440.00 excl VAT
Register