Mineral Geochemistry – Causes and Consequences

Synthesis

Day 1 :GEOLOGICAL PROCESSES, LEADING TO POROSITY PERMEABILITY ALTERATION
Then, a special attention will be paid to conditions that participate to protect sediments against porosity – permeability reduction leading to reservoir preservation.

Day 2 :
THE TOOL BOX USED TO STUDY RESERVOIR ROCKS
Petrography, chemistry
Stable isotope data
Unstable isotopes used for mineral dating
Fluid inclusion and other processes dedicated to temperature determination

Day 3 :
PRESENTATION OF FEW EXAMPLES OF DIAGENETIC SEQUENCES AND THEIR IMPACT ON PETROPHYSICAL
CHARACTERISTICS OBSERVED ON KNOWN RESERVOIRS
Then an application of some tools will be shown in order to answered to an exploration problem, namely the prediction of porosity and permeability to be expected in deep buried reservoir.

Day 4 :
THE RESERVOIR WATER CHEMISTRY AND ITS APPLICATION
First, the sampling is presented to obtain water data in hydrocarbon bearing zones, and below the oil
water contact. The main analytical data set will be presented in order to interpret results in terms of reservoir filling, and reservoir connectivity.
An example of water chemistry study is used to understand a production problem.

Day 5 :
An overview of the above presentation will be discussed with students, leaving room for questions and a
more large discussion on potential use of geochemistry in what concerns:
Reservoir monitoring
Environmental sciences (acid gas sequestration)
The Course will end with a short quiz of 3 questions and the delivery of a diploma

Language

Anglais

Audience type

Students with a fair knowledge in geology who wish to access to a good understanding of reservoir alterations related to burial, in order to rank project quality in exploration or production.

Planned duration

The course is planned for 5 days including half a day dedicated to a short quiz of 3 questions and the delivery of a diploma

Support material

A simplified Powerpoint will be given to all participants at the end of the formation.

Prerequisite

Objectives

The aim of the course is to present the evolution of reservoir characteristics (porosity and permeability) in relation to the burial history. The final goal being to predict reservoir behaviour before hydrocarbon trapping, and be able to help exploration and production with accurate spatial reservoir data.

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