N649 Introduction to Log Analysis

Event Facts

7 - 9 Oct. 2019
Event Code:
3 days
Larry Maple
Booking Status:
Good Availability
CAD $2,375 (Exclusive of tax)

Course Facts

Course Code:
3 days
2.4 Continuing Education Units
24 Professional Development Hours
Certificate Issued Upon Completion


This three-day course covers the fundamentals of log analysis for understanding openhole logs and teaches immediate practical skills in formation evaluation. Hydrocarbon evaluation, porosity and permeability estimation are covered, together with rock typing and pay assessment. Methods to integrate core data, drill cuttings reports, DST results, and production information with logs are described. Log quality control and normalization issues are also discussed. Participants are required to bring calculator or a laptop computer for all 3 course days - please be sure to fully charge laptop batteries prior to each day. Excel freeware log analysis software is provided.

Duration and Training Method

 Three classroom days providing 2.4 CEU (Continuing Education Credits) or 24 PDH (Professional Development Hours)

Day One

• Basics of Well Logging
• Fundamental Physics and Equations
• Logs: Bluelinesand digits
• The SP log
• Basic log analysis techniques

Day Two

• BVWi and fluid production
• Permeability estimation from logs
• Resistivity logging
• Porosity logs
• Combination porosity logs

Day Three
• Gamma-ray log analysis
• Shaly sandstone analysis
• Gas shale log analysis
• Saturation –height profiles

Who should attend

The course best suits those beginning to acquaint themselves with logs or those who do not use logs all the time and need a refresher.

Larry Maple

Larry joined the petroleum industry in 1975, and worked initially as an exploration and development geologist at various locations in Oklahoma and Colorado. In 1978 he began working in petrophysics, transferred to Singapore, and worked as the Southeast Asia regional petrophysicist for Phillips Petroleum Company. In that position he was responsible for petrophysical evaluations of Phillips’s exploration and development activities in Australia, China, Indonesia, Malaysia, Thailand, and the Philippines. He subsequently spent most of his career in a variety of technical divisions working on Phillips’s and then ConocoPhillips’ international E&P projects while based in Houston or Oklahoma with occasional long term assignments to places such as Norway and Qatar. In the course of these projects he has worked a wide variety of geological formation types, ranging from shaly sands and tight gas sands to carbonates and evaporites.

Larry also began teaching petrophysical training courses in 1978 and became one of the primary lecturers for internal courses in petrophysics, both domestically and internationally. In 1983, he took on the primary responsibility for developing internal training manuals, materials, and lecture presentations and coordinating new-hire training sessions for petrophysics.

At various times in the following thirty-five years he has taken post graduate courses in sedimentary geology, geophysics, and reservoir engineering, but his best education has always come through project work.

Affiliations and Accreditation
BA Geology

Courses Taught
N003: Geological Interpretation of Well Logs
N649: Introduction to Log Analysis


Alternative Dates for this Course

Related Subjects

Detailed and thorough course. I went from a zero on log analysis to functional. Larry Maple is a knowledgeable and clear instructor.