Modern Well Log Interpretation
Details :
A five-day classroom course, with many individual
exercises.
The course comes in two “flavors” depending upon the
background of the participants. The first three days cover all standard and
modern well-logging measurements both Wireline and LWD, and the remaining two
days cover specific topics as follows:
Ø a “geological” flavor
covering dipmeter/imaging logs, use of logs for correlation, mineralogy
Ø an
“engineering” flavor covering cased-hole topics such as bond- &
corrosion-logging, fluid level monitoring, perforation performance issues.
Ø depending on
participants’ background and interest, a number of more advanced topics can be
presented in the form of overviews; details are in the course content summary
below.
A five-day classroom course, with many individual
exercises.
The course comes in two “flavors” depending upon the
background of the participants. The first three days cover all standard and
modern well-logging measurements both Wireline and LWD, and the remaining two
days cover specific topics as follows:
Ø a “geological” flavor
covering dipmeter/imaging logs, use of logs for correlation, mineralogy
Ø an
“engineering” flavor covering cased-hole topics such as bond- &
corrosion-logging, fluid level monitoring, perforation performance issues.
Ø depending on
participants’ background and interest, a number of more advanced topics can be
presented in the form of overviews; details are in the course content summary
below.
The course is intended for entry-level engineers and
geologists/geophysicists, as well as for experienced geo-scientists and
technical assistants working with, or needing to understand better, the
principles of log interpretation and/or to update themselves on the range of
log measurements and techniques now available to them.
Day 1
General Topics and Resistivity Measurements
1. Brief Overview of Requirement for Wireline & LWD
Measurements
2. Overview of Basic Petrophysical Models &
Relationships Used in “Clean” formation interpretation
3. Overview of Basic Geological Models & Signatures
obtainable from well logs or
4. Overview of Basic Geological Models & Signatures
obtainable from well logs
5. Overview of Basic Applications of Wireline & LWD
Methods for Well Completions (Geoscientists and/or Reservoir Monitoring
(Engineers)
6. Depth Measurements & Control
8. Use of SP for Geological Interpretation and to
determine Rw
9. Resistivity Measurements to Determine Rt , Rxo and
invasion profile
Tornado chart corrections & implications of the
“step-profile” and other invasion profile assumptions
10. Gamma Ray
11. Caliper Measurements
12. Identification of Potential Zones of Interest using
SP, GR and Resistivity
[This section is mainly the participants working through
a series of log examples to illustrate the selection of zones of possible
interest]
Day 2
Porosity and Mineralogy/Lithology Measurements
13. Measurements for Determination of Porosity &
Mineralogy/Lithology
•Density Measurements
•Neutron Measurements
•Acoustic Measurements
•Pe Measurements
•Cross plot methods for porosity &
lithology determination
14. Gamma Ray Spectrometry and Core Sampling for Enhanced
Mineralogy Determination
•Spectral Gamma Ray
•Elemental Capture Spectrometry
•Percussion & Mechanical Sidewall Coring
Linking Resistivity with Porosity/Mineralogy Measurements
15. Linking Porosity, Formation Factor and Water
Saturation
16. Determination of Water Saturations in Virgin and
Flushed Zones
17. Completion & review of 1st example set of logs
(“Clean Sand” example) which the group has been working on in teams over the
first 3 days. Review of GoM LWD set of
logs (“Homework” example) given to participants for their study after course
hours.
Day 4
Miscellaneous Measurements for Petroleum Engineering and
Geological Applications
18. Pressure Measurements, Fluid Sampling & Analysis
using Formation Testers
19. Nuclear Magnetic Resonance Measurements
20. Permeability Determination from Logs & Pressure
Measurements
21. Overview of Computer Log Interpretation Methods
Alternative Topics for Geologists’ Course:
22. Other Geological Applications of Resistivity,
Porosity & GR Spectrum Measurements
Discussion of examples & applications
Alternative Topics for Engineers’ Course:
23. Cased-Hole Logging Measurements
Day 5
Log Quality Control, Interpretation of Final Example
24. Overview of Some Log Quality Control Issues
25. Participants work in groups on 2nd example set of
logs, preferably from general area of course, otherwise using a standard
example from the North Sea (“Forties” example)
26. Review of interpretation of 2nd set of logs, final
summary and prize-giving, award of certificates
Other Topics on Special Request, or as Time Permits:
27. Overview of Dipole Sonic Measurements
28. Electromagnetic Propagation Measurements
29. Overview of Shaly Sand Interpretation
30. Overview of Log Interpretation in Thin Sand/Shale
sequences
31. Overview of Log Applications in Shale - Oil/Gas
Formations
32. Overview of Log Interpretation in Complex Carbonate
Reservoirs
33. Overview of Different Approaches to Cement Bond
Evaluation
34. Overview of Production Logging in Horizontal Wells
- All lectures are in colorful presentation
- All lectures are interspersed with interactive discussion
- All lectures include group discussion, case history and exercises
- Actual major incidents as well as industry experience are reviewed
- Participants receive a multicolor course manual
- Pictures of real incidents and case history are shown
- Videos on the subject are shown
daily 09:00 – 14:00