Reservoir Geology and Log Analysis

Sommaire

Day 1 :A. OBJECTIVES OF RESERVOIR GEOLOGY
What does the Reservoir Geologist have to work with?
What is the Reservoir Geologist’s role?
From source to reservoir. Source rock types, maturation and migration. Main types of traps
B. RESERVOIR ROCKS
Depositional parameters controlling petrophysics
Reservoir properties: definition of the porosity, porosity vs. depth, net-pay, permeability, capillary pressure, water saturation, pore geometry. Pressure vs. depth and overpressures. Fracture porosity.
Water distribution. Porosity vs. permeability relationships

Day 2 :
C. FLUID DISTRIBUTION
Wetting and non-wetting fluids
Capillary pressure, pressure vs. depth, fluid contacts
D. RESERVOIR GEOMETRY
Example from a deltaic environment
Sedimentology, impact on reservoir characteristics

Day 3 :
E. OIL/GAS IN PLACE EVALUATION
Principles of mapping and contouring reservoir parameters
Hydrocarbons in place evaluation
F. THE RESERVES CONCEPT

Day 4 :
G. THE LOGGING TOOLS
The main logging tools, as used in the l industry will be reviewed such as SP, gamma ray, neutron porosity tool, bulk density tool, sonic log and electrical resistivity tools Examples (analysis to be carried out by the students)

Day 5 :
H. LOG ANALYSIS – THEORY AND PRACTICE
Practical applications will allow the student to work with the Rock model, lithology identification on
porosity tools, shaliness, effective porosity, Rw determination, hydrocarbons effect and Sw computations,
both non shaly and shaly formations
Examples (analysis to be carried out by the students)
Exam (possibility)

Langue

Français & Anglais

Public visé

The course is designed for students having a solid background in Geosciences or petroleum industry personnel with some geological background, including production, drilling, and geophysical. The lecture can be adjusted to the level of knowledge of the students.

Durée prévisionnelle

The duration of the course is 5 half-days. The lecture can be split into : Reservoir geology (3 days) or log analysis (2/3 days) and teached separately.

Moyens Pédagogiques

Handouts with copies of slides will be provided.

Prérequis

Objectifs

The Reservoir Geology (also called Development Geology) is a fundamental part of the integrated reservoir studies. The course introduces the language, concepts, tools and techniques used by reservoir geologists and reservoir engineers in an oil and gas production environment. Participants will perform practical exercises.

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