Depth Conversion & Velocity Modeling Uncertainties

Overview

This intensive 5-day course equips geoscientists, geophysicists, and reservoir engineers with the theory and practical skills to build accurate velocity models, perform robust time-to-depth conversions, and rigorously assess uncertainties in velocity and depth mapping. Participants will learn how to build 1D, 2D, and 3D velocity models, integrate well data and seismic velocities, quantify depth uncertainties, and assess the impact on structural maps, volumetrics, and reservoir risk.

Hands-on exercises and real-world examples will guide participants in best practices for velocity model building and highlight the pitfalls of neglecting uncertainties.

6-Oct	LONDON	Dates could be adjust for special requests
13-Oct	CAIRO
20-Oct	DUBAI
27-Oct	ISTANBUL

👥 Who Should Attend:

Seismic interpreters & geophysicists
Reservoir geologists & engineers
Geomodelers & exploration teams
Professionals responsible for prospect evaluation, mapping, and volumetrics

🗓️ Day 1: Fundamentals of Depth Conversion & Velocity Basics

Time	Topic
08:30 – 09:00	Welcome, Objectives & Course Overview
09:00 – 10:30	Seismic Velocities Overview – RMS, interval, average, stacking velocities
10:30 – 10:45	☕ Coffee Break
10:45 – 12:15	Time-Depth Relationships – Checkshot, VSP, sonic log calibration
12:15 – 01:15	🍽 Lunch Break
01:15 – 02:45	Depth Conversion Basics – Linear, layer-cake, and polynomial methods
02:45 – 03:00	☕ Coffee Break
03:00 – 04:30	Exercise: Build a basic 1D time-depth conversion using well data

🗓️ Day 2: Building & Updating Velocity Models

Time	Topic
08:30 – 10:00	2D & 3D Velocity Model Construction – Horizons, grids, and interpolation
10:00 – 10:15	☕ Coffee Break
10:15 – 12:15	Updating Velocity Models with Wells – Tying seismic to well markers
12:15 – 01:15	🍽 Lunch Break
01:15 – 02:45	Layer-based vs. Grid-based Velocity Models – Strengths and limitations
02:45 – 03:00	☕ Coffee Break
03:00 – 04:30	Exercise: Create a velocity model for a 2D seismic section

🗓️ Day 3: Advanced Depth Conversion Techniques

Time	Topic
08:30 – 10:00	Anisotropy & Its Effects on Depth Conversion – VTI, HTI considerations
10:00 – 10:15	☕ Coffee Break
10:15 – 12:15	Layer-by-layer vs. Horizon-based Approaches – Choosing the right workflow
12:15 – 01:15	🍽 Lunch Break
01:15 – 02:45	Complex Structures & Fault Handling in Depth Conversion
02:45 – 03:00	☕ Coffee Break
03:00 – 04:30	Exercise: Apply depth conversion to a faulted structure

🗓️ Day 4: Quantifying & Mapping Uncertainties

Time	Topic
08:30 – 10:00	Sources of Velocity & Depth Uncertainty – Acquisition, processing, interpretation
10:00 – 10:15	☕ Coffee Break
10:15 – 12:15	Quantifying Uncertainty – Residual analysis, error envelopes, and sensitivity
12:15 – 01:15	🍽 Lunch Break
01:15 – 02:45	Stochastic Modeling – Generating multiple realizations for risk assessment
02:45 – 03:00	☕ Coffee Break
03:00 – 04:30	Exercise: Create uncertainty maps and perform sensitivity analysis

🗓️ Day 5: Application, Integration & Case Studies

Time	Topic
08:30 – 10:00	Impact of Velocity Uncertainty on Structural Interpretation & Volumetrics
10:00 – 10:15	☕ Coffee Break
10:15 – 12:15	Integrating Depth Maps with Reservoir Models – Building depth-converted frameworks
12:15 – 01:15	🍽 Lunch Break
01:15 – 02:45	Case Studies – Deepwater, structurally complex settings, and sub-salt challenges
02:45 – 03:00	☕ Coffee Break
03:00 – 04:30	Final Exercise: End-to-end workflow from seismic velocity model to uncertainty assessment
04:30 – 05:00	Course Summary, Q&A, Feedback & Certificate Distribution

📂 Course Materials Provided:

Printed and digital course manual
Example seismic lines, velocity logs, and well data for exercises
Practical workflows for velocity modeling, depth conversion, and uncertainty mapping
Case studies highlighting pitfalls and best practices
Reference papers on velocity uncertainties in exploration and development

Target audiences

Reservoir Engineers, Geologists

$ 5,800

Course Features

Lecture 0
Quiz 0
Duration 5 days
Skill level All levels
Language English
Students 40
Assessments Yes

Depth Conversion & Velocity Modeling Uncertainties