Events & Courses

Course overview

This course is concerned with the historical development, physical measurement principles and applications of technologies that were originally designed to obtain the orientation of strata in the subsurface, but are now used to provide a full geological description of the formations crossed by the borehole.

This is Module 1 of a 3 module course series. Delegates can register for individual modules or the All Modules course. Follow the links below to register for further modules or the All Modules option:

Online Training: Image Log Analysis; Past, Present, and New Technology - All Modules

Online Training: Image Log Analysis; Past, Present, and New Technology - Module 2

Online Training: Image Log Analysis; Past, Present, and New Technology - Module 3

Who is this course aimed at?

The course will be suitable for a wide range of professionals including petrophysicists, geophysicists, geomodellers and reservoir engineers from oil, gas, geothermal, water, nuclear and CCS Industries who have used or are planning to acquire dipmeter logs / borehole image logs as part of their data acquisition campaign.

Learning objectives

1. Demonstrate the main objectives, benefits and limitations of dipmeter and borehole image logs.
2. Describe the principle of downhole navigation systems, dip computation methods and the basic rules for dipmeter log interpretation. 
3. Compare the physical measurement principles and tool specifications of electrical and acoustic borehole image logging tools.
4. Evaluate the complexities of borehole image logging in special environments such as oil-base muds, heavy oil, bad hole sections.
5. Explain the basics of processing borehole image logs, quality control of field and processed data and the recognition of acquisition, processing or drilling artifacts.
6. Present the basics of a structural and/or geomechanical interpretation from borehole image logs.
7. Explain the approach towards a sedimentological, textural interpretation of borehole image logs and towards integrated facies analysis.
8. Recommend appropriate borehole image logging tools and processing and interpretation methods in clastic and carbonate environments.
9. Understand the benefits and limitations of borehole image logs in an integrated wellbore analysis. Be able to discuss core – borehole image log calibration issues.
10. Understand the principles and practices of LWD technologies and their use in the evaluation of deviated and horizontal wells.
11. Understand the way in which LWD measurements can identify productive zones and how they can guide the placement of the wellbore towards the most productive parts of the reservoir.
12. Familiarise yourself with a number of non-geosteering applications of LWD technologies.

Module 1 Programme

Module 1 will be held virtually over a half-day, on 21 January 2025, from 09:00 to 13:00 GMT.

Module 1: Introduction, physical measurement principles, structural and geomechanical interpretation of dipmeters and borehole image logs acquired on wireline:

• History of dipmeter logging
• Surface resistivity measurements
• Inclinometry systems
• Dip computation methods
• Basic dipmeter interpretation rules

• Acquisition of electrical borehole image logs 
• Tool specs: resolution, sampling rate, coverage etc…
• Log quality control, recognition of artefacts
• Inspection of field data

• Common acoustic borehole image logs
• Electrical imaging in Oil-Base Mud
• Cameras, videos
• Rock sampling and core-Log calibration

• Dip set classifications
• Structural dip determination and removal
• Faults, micro-faults, unconformities, fractures
• Thin bed analysis, sand count
• Common interpretation software, demo
• Stereographic techniques
• Near-wellbore cross-sections, pseudo-3D displays

• Fracture classifications
• Fracture aperture calculation
• Basement interpretation and fractures
• In-situ stress analysis 
• Borehole shape anomalies
• Discrete Fracture Network modelling

Speaker Bio

Jurry van Doorn 

Jurry van Doorn is a geologist with 35 years' experience in the oilfield service industry. During his career he has focused on dipmeters, geochemical logs, borehole image logs, sidewall coring acquisition and core analysis. Since his retirement from Schlumberger, he has worked as a consultant, most notably with Geode-Energy Ltd.

Location

This course will be delivered virtually via Zoom. Joining details will be sent out the day prior, alongside any course materials that may be needed.

Fees

Group Discounts

We offer competitive group discounts on all Training Courses:

5 – 9 delegates: 20% off
10 – 14 delegates: 25% off
15 delegates or more: 30% off

For more information on how to access the Group Discount, please email [email protected]

Concessions

We offer students a generous discount. Please verify your student status by either registering with your student email address, or uploading a photograph of your student identification/acceptance letter.

The Society offers a limited number of concessionary rates for those in financial hardship. Contact [email protected] (Please note you may be required to provide details/evidence to support your application for this.)

If you require an invoice to register for this course, please email [email protected]

Registration will close 24 hours before the event takes place.

GSL reserves the right to postpone or cancel a Training Course in the event of low interest. In this instance, a full refund will be offered for registration fees.