Level 2: Petroleum Geology

Référence
l2pg23

Objectives

Objective of the Courses:

Primary objectives of the courses are to acquire the basic geology and petroleum geology vocabulary and general concepts. The Courses are designed to teach key terms and concepts that are essential to the oil and gas industry. Topics include: Earth structure, Plate tectonics, Mineral, Rocks and Rocks dating, Tectonic, Sedimentary basins and Sedimentary processes, Exploration applied methodology, Petroleum system assessment, Petroleum formation migration and accumulation.

What you will learn?

At the completion of the courses you will know:

* Fundamentals basic Geology for petroleum engineers

* About different exploration strategies

* About petroleum system and petroleum system assessment

* About source rocks, petroleum reservoirs, Seal rocks and traps and hydrocarbon migration

* The distribution of porosity and permeability in clastic and carbonate reservoirs

* Conventional vs unconventional resources

At the completion of the fieldwork you will know:

* Fundamentals on contour maps and how to use them on the field

* How to collect data (strike, dip and thickness), measure sections, draw up interpretative cross sections and reconstruct comprehensive models of petroleum generation, migration and accumulation.

* How to document the major elements of a petroleum system: source rocks, reservoir rocks, seal rocks and overburden rocks, in relation to their specific depositional environments

* The major functioning petroleum systems in Tunisia

Courses Content

1. Basic geology for petroleum engineers: A synthesis: Earth structure and plate tectonics fundamental concepts of Mineralogy, petrography, Stratigraphy, dating and tectonic, as well as concepts on Sedimentary processes and basin types.

Earth structure and plate tectonic

Minerals and rocks

Geological time

Tectonic

sedimentary Geology applied to petroleum exploration

2. Exploration processes

Evaluation of exploration processes

Exploration concepts

Exploration strategy

3. Petroleum System Definition and Assessment

The petroleum system concept: Elements and processes of a petroleum system

Naming, mapping and determining the temporal aspects of a petroleum system

Geographic, Stratigraphic and temporal aspects of a petroleum system

4. The origin of petroleum including fundamental processes of organic deposition, thermal maturation, migration of fluids.

From living organisms to Kerogen: The early diagenetic processes of the sedimentary organic matter

Production vs Preservation of the organic matter in the water column, development of anoxic conditions and deposition of petroleum source rocks.

Thermal maturation and petroleum generation

Migration of fluids: primary, secondary and Tertiary migrations

5. Reservoirs: Definition, rock types and properties

Porosity

definition,

porosity types

porosity in sandstones

Porosity in carbonates

Permeability:

Definition, measurement

absolute, effective and relative permeability

Wettability in reservoirs

Clastic and carbonate reservoirs

6. Cap Rocks/Seals

Definition.

Properties of seal rocks: ductility, top seal, lateral seal, fault seal

Different types of seal rocks

7. Formation of the different types of traps for reservoired petroleum

Structural traps: tilted fault block traps, anticline traps, salt dome traps

Stratigraphic traps: angular unconformity, Reef, sand bars, pinch out

Trap frequency and characteristics: Closure, Gross pay, Net Pay

Hydrocarbon migration as a function of thermal maturity

Conventional vs unconventional petroleum resources