Carbonate reservoir characterisation

Mia van Steenwinkel 
5 days

Business context

Business context

Understanding carbonate reservoirs - and the differences with clastic ones - is vital to meaningfully evaluate the critical success factors influencing volumetrics, flow behavior and ultimate recovery in different types of carbonate reservoirs.

Carbonate reservoirs are characterized by (1) multi-scale matrix heterogeneities, from grain size to field size; (2) they are diagenetically altered through geologic time and (3) they are brittle and therefore fractured.

In this course, participants will have learned to identify and understand: (1) The carbonate-specific parameters and uncertainties that impact the HCIIP and the recovery; (2) The data required to investigate these parameters; (3) How to incorporate carbonate heterogeneities appropriately in static models; (4) how heterogeneity patterns effect flow beha-viour, and (5) Development options for different types of carbonate fields.

Who should attend

Petroleum engineers, geologists and geophysicists involved with appraisal and development of carbonate oil and gas reservoirs.

Course content

  • Introduction to carbonates
  • Carbonates vs clastics
  • Carbonate factories
  • Platform types and controls
  • Facies Classification
  • Diagenesis & Fracturing
  • Rock Typing
  • Focus on volumetrics uncertainties
  • Seismic reflection issues
  • Fluid contacts
  • Net-to-gross in carbonates
  • Average porosity issues
  • Hydrocarbon saturation issues
  • reservoir characterization and recovery
  • Heterogeneities in carbonates
  • Stratigraphic framework
  • carbonate sequence stratigraphy
  • Non-stratiform heterogeneities (e.g. fractures, karst)
  • Rock Typing
  • Upscaling issues
  • Static modeling concepts
  • Recovery techniques in carbonates
  • Differences in carbonate reservoirs through geologic time and implications for reservoir potential

Learning, methods and tools

The course focuses on the main elements that impact volumetrics and recovery of carbonate fields in different phases of the field's life cycle.

It is designed on the basis of Accelerated Learning principles, allowing participants to (1) discover and connect to their own needs, (2) process new information in a way they can apply it to their own fields, (3) Consolidate and reproduce the learning through exercises and interactive discussions and (4) Feed-forward to applications in their actual job.

Day by day programme

Day 1: Focus on differences with clastics

  • Introduction to carbonates
  • Carbonates vs clastics
  • Carbonate factories
  • Platform types and controls
  • Facies classification
  • Diagenesis & fracturing
  • Rock typing

 

Day 2: Focus on volumetrics uncertainties

  • Seismic reflection issues
  • Fluid contacts
  • Net-to-gross in carbonates
  • Average porosity issues
  • Hydrocarbon saturation issues

 

Day 3: Focus on reservoir characterization and recovery

  • Heterogeneities in carbonates
  • Stratigraphic framework - carbonate sequence stratigraphy
  • Non-stratiform heterogeneities (e.g. fractures, karst)
  • Rock typing
  • Upscaling issues

 

Day 4: Focus on Modeling and what requirements for dynamic modeling

  • Static modeling concepts
  • Recovery techniques in carbonates

 

Day 5: Focus on differences in carbonate reservoirs through geologic time and implications for reservoir potential

  • Carbonate systems through geologic time
  • Summaries and Wrap up