DER Summer School 2026

Well-logging and formation evaluation
Date
Place

Instituto Superior Técnico, Alameda Campus - University of Lisbon, Portugal

Register

June 30

DER Summer School 2026 - Well-logging and formation evaluation

This 5-day course (3 days of theory and 2 days of hands-on training) provides a comprehensive overview of current well logging technologies, procedures, and best practices for formation evaluation.

Participants will gain a structured understanding of the main logging tools used in the subsurface industry — including electrical, nuclear, and acoustic methods — and their application in the evaluation of geological formations. The course covers mineral composition, petrophysical properties (porosity, permeability, and grain density), anisotropy, and fluid content.

By the end of the course, participants will be equipped to interpret well log data and identify subsurface geological formations with potential economic value, supporting informed decisions in resource and reserve assessment.

Programme

13

Jul

09:00 - 10:00

Overview of petrophysics in formation evaluation

10:20 - 11:20

Overview of Logging tools, sampling (coring) and core analysis

12:40 - 12:40

Integration of wireline logs, LWD logs and cores for formation evaluation

13:45 - 14:45

Logs for lithology determination (GR,CNL/LDL (PEF),

15:00 - 16:00

Logs for porosity determination (CNL, LDL, FDC, BHC, NMR)

16:20 - 17:20

Logs for fluid determination (Laterolog, Induction, RFT, MDT)

14

Jul

09:00 - 10:00

Effect of drilling fluids and wellbore tortuosity in log response

10:20 - 11:20

Review of resistivity concepts (shallow, medium, deep)

11:40 - 12:40

Derivation of Archie Equation

13:45 - 14:45

Logs for Structural Analysis (SHDT)

15:00 - 16:00

Logs for fluid analysis and fluid gradients (RFT)

16:20 - 17:20

Identification of permeable intervals and fluids in a reservoir (oil, gas, water)

15

Jul

09:00 - 10:00

Lithological Analysis from logs

10:20 - 11:20

The impact of shale volume in porosity estimation

11:40 - 12:40

Correlating wells for reservoir characterisation

13:45 - 14:45

Estimating porosities

15:00 - 16:00

Assessing the formation fluid

16

Jul

09:00 - 10:00

Use of Conventional Core Analysis and SCAL to complement petrophyiscal evaluation

10:20 - 11:20

Concept of geological facies and their use in geological models

11:40 - 12:40

Concept of rock types and their use in static and dynamic models

13:45 - 12:45

Use of special tools for porosity determination - NMR Log

15:00 - 16:00

Use of special tools for fracture determination - FMI Log

16:20 - 17:20

Use of special tools for fluid sampling - MDT log

17

Jul

09:00 - 10:00

Evaluating water saturation

13:45 - 14:45

From petrophysics to Resources estimations

Speakers

Ricardo Pereira

Ricardo Pereira is Auxiliary Researcher at NOVA FCT currently working on sustainable geoenergy resources, with focus on Compressed Air Energy Storage in porous rocks and CO2 storage.
Worked for over 22 years as exploration geoscientist for PARTEX Oil and Gas and Petroleum Development Oman, as petrophysicist and wireline log analyst, seismic interpretation and prospect maturation.
Holds a BSc and MSc in Geology from the Faculty of Sciences of Lisbon (Portugal) and PhD from Cardiff University (UK).

Jorge Salgado Gomes

Visiting professor at IST, with 34 years of industry experience on subsurface projects related to exploration and production of mineral and hydrocarbon resources in Europe, North Africa and Middle East, and 10 years of academic experience in teaching and research in areas of reservoir characterization and petrohysics.
Co-author of the book "The Universe od the Oil and Gas Industry - from Exploration to Production".
Holds a BSc & MSc in Geology from Porto University and MEng and PhD in Petroleum Engineering from Heriot-Watt University, Edinburgh.

Sponsors