Carbonate Sedimentology, Stratigraphy, and Reservoir Characterization

Program Objectives

This comprehensive introductory course is designed to explore how Carbonates are formed and change through time resulting in the carbonate reservoirs we see today. Participants will learn how to identify carbonate facies, the effect of sequence stratigraphy on carbonates, and determine the controlling factors for porosity in carbonate reservoirs. The course will include sequence stratigraphic exercises on seismic data and gain understanding from field examples from the Jurassic Cotton Valley Lime and Smackover Formation in the US Gulf of Mexico, The Devonian Tengiz Field in the Pre-Caspian Basin in Kazahkstan, the Miocene Arun Field in offshore Northern Sumatra, Indonesia and the Jurassic Arab-D Reservoir in the Ghawar Field in Saudi Arabia. 
Course Outline
Day 1
  • Carbonates made easy: Introduction to Carbonate Facies and Reservoir Characterization 
  • Building Blocks: Carbonate minerals, grains and sediments 
    • Non-skeletal grains
    • Skeletal grains 
    • Limestone 
    • Dolomite 
Day 2
  • In Situ Processes: Carbonate Sedimentation
    • Carbonate facies 
    • Carbonate platforms 
    • Carbonate ramps 
  • What Goes Up Must Come Down: Carbonate cycles 
    • Shallowing upward carbonate cycles 
    • Carbonate-evaporite cycles
  • The Real Thing: Modern Depositional environments 
    • Platform environment 
    • Lagoonal and supratidal environments 
    • Subtidal barrier reefs and tidal flats

Day 3
  • Catch up-Keep Up: Sequence Stratigraphy in Carbonates
    • Recognizing sequences in carbonate build ups
    • Sequences on carbonate ramps 
  • Sequence Stratigraphy Exercise 
  • Reservoir Characterization Tools 
    • Identifying porosity and permeability on well logs 
    • Comparing log and core porosity and permeability 
Day 4
  • Ever Changing: Diagenetic Overprinting 
    • Meteroric diagenesis 
    • Early burial diagenesis 
    • Late burial diagenesis 
  • Dolomitization Made Easy
    • How sea level changes to form dolomite 
    • How dolomite can help or hurt a reservoir 
  • Exercise: Making Dolomite 
    • Carbonate Fracturing: Case Study 
    • Discussion of Carbonate Processes 
    • Example Field Case Study: Miocene Arun Field, North Sumatra, Indonesia 
    • Assigned Group: Field Case Studies: Field Analysis 
Day 5
  • Assigned Group: Field Case Study Preparation and Presentation 
  • Exam