OPEN HOLE WELL LOG ANALYSIS

INTRODUCTION

Open-hole logging is a critical formation evaluation

technique. It provides data to geoscientists and engineers involved in all aspects of hydrocarbon reservoir management. This course is designed to review the capabilities and limitations of well logging tools and interpretation techniques. A review of the concepts and measurement prin

ciples of the different open-hole tools will be followed by a discussion of conventional interpretation techniques. Emphasis will be given to the reduction of the level of uncertainties introduced by the interpretation models. Interpretation problems of special interest will be discussed. The course is intended for petroleum engineers and geoscientists. It can be useful to managers and leaders of integrated reservoir management teams. The objective of the course is to introduce the role of well logs to the participants and enable them to perform basic qualitative and quantitative and be familiar with the limitations of interpretation techniques.

Course participants will receive a workbook containing copies of graphs used in the lectures and log examples and problems.

COURSE CONTENT

Introduction

• Use of well logs in the petroleum industry
• Different aspects of well logging technique
• Advantages and limitations of well logging
• Classification of interpretation problems
• Well Logging Measurement Environment

Well-bore shape and size

• Formation temperature
• Drilling fluid types
• Invasion profile

Conventional Interpretation Technique

• Formation resistivity factor
• Resistivity-Porosity relationship
• Resistivity-reservoir fluid saturation relationship
• The concept of tortuosity and relationship to the coefficient “m” and “n”
• Concept of cut-off porosity and cut-off saturation
• Concept of movable oil
• Limitations of the conventional interpretation technique

Logging Tools Principles and Applications

• SP log
• Gamma-Ray logs
• Resistivity logs
• Sonic logs
• Density logs
• Neutron logs
• Nuclear Magnetic Resonance log

Reconnaissance Interpretation Techniques

• Ro log
• Rwa  log
• Rxo/Rt approach

Pattern Recognition Interpretation Techniques

• Advantage and concept
• Hingle Plot
• Picket Plot
• Interplay between Hingle and Pickett plots

Miscellaneous Interpretation Problems

• Evaluation of shaly sands.
• Evaluation of gas-bearing formations.
• Evaluation of complex lithologies

PARTICIPANTS

• Reservoir engineers and technicians
• Production engineers and supervisors
• Drilling engineers and supervisors
• Log Analysts
• Geologists
• Petroleum engineers

INSTRUCTOR

Ir. Drs. St. Edi Purwaka, MT and Team

PRICE

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