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Oil & Gas Training
and Competency Development
Competency Management system SLB NEXT

Geology of Clastic Reservoirs

This course offers an in-depth analysis of the distributions, geometries and sedimentary architectures of clastic reservoir facies. Participants will learn the criteria for distinguishing reservoir facies using wireline log and core data, how to interpret facies distributions at regional and field scales, and how to integrate this information into exploration and development projects. Reservoir geometry, continuity and effects on diagenesis on clastic reservoir quality will be tackled.

The course emphasis is on fluvio-deltaic facies, with coverage of alluvial fan, fluvial, eolian, shoreface, deltaic, shelf and deep-water environments. Lectures cover the basics; supporting details of sedimentary facies characteristic, geometry, depositional sequences and oil distribution are drawn from numerous studies worldwide Exercises utilizing log and core data provide an opportunity for participants to practice the methodologies addressed in the course.

Day 1

Continental clastic reservoir

Introduction of facies analysis.

The continental depositional systems; characteristics, geometry, sequences and oil distribution:

• Alluvial fan.

• Braided stream reservoirs

• Meander streams reservoirs

• Eolian reservoirs

Exercises

Day 2

Transitional clastic reservoir

Transitional depositional systems; characteristics, geometry, sequences and oil distribution:

• Deltaic reservoirs

• Tidal reservoirs

• Shoreface reservoirs

Exercises

Day 3

Shelf & deep-water clastic reservoir

The shelfal and deep water depositional systems; characteristics, geometry, sequences and oil distribution:

• Shelfal facies reservoirs.

• Slope facies reservoirs.

• Deep water reservoirs.

Exercises

Day 4

Characteristics of clastic reservoirs

Basic clastic reservoir characteristics.

Effect of diagenesis on reservoir quality.

Reservoir continuity, heterogeneity and reserve calculation.

Methods of explorations (seismic interpretation, wire-line logs, structural and isopach

Maps, well correlation, ….etc.).

Sedimentary basins and petroleum systems.

Exercises.

Day 5

Clastic Sequence Stratigraphy

• Sequence stratigraphy: general concepts.

• An overview on sequence straitgraphy in clastic depositional systems.

• Exercises.

Learning activity mix

Geologists, geophysicists, reservoir engineers, reservoir simulation engineers; other asset team members

Facies analysis

Continental depositional systems

Transitional depositional systems

Shelfal and deepwater depositional systems

Clastic reservoir characteristics

Effect of diagenesis on reservoir quality.

Reservoir continuity, heterogeneity and reserve calculation.

Methods of explorations (seismic interpretation, wire-line logs, structural and isopach

Sedimentary basins and petroleum systems.

Clastic sequence stratigraphy

Basic knowledge of sedimentary geology

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