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Sessions Description

Session 1. Carbonate Reservoir Geology and Classification

Carbonate reservoirs display a large variability in their characteristics. Most of the carbonate reservoirs, unlike clastic deposits, originate situ in siting and then undergo various post-depositional alterations, which may reflect in basin productivity whether negatively or positively. It causes significant uncertainties in reservoir characteristics forecast and selection of profitable development system. Facial heterogeneity of carbonate formations, alterations of varying intensity and direction in lithogenesis are among keys that control reservoir performance.

Key topics:

  • Lithofacies conditions of Carbonate collectors of different age
  • Carbonate reservoir voids: material composition and structure. Influence of secondary transformation on reservoir porosity and permeability.
  • Aspects of study and propagation prediction of reservoir rock of different types (porous, porous-vuggy, fractured) based on seismic data.
  • Well logging in carbonate reservoirs.
  • Key heterogeneities impacting Dynamics in Carbonate fields.
  • Wettability as main parameter for natural distribution of oil and gas in reservoir, effective permeability and displacement efficiency

Session 2. Carbonate Reservoir Modeling

Geological and filtration modeling helps to mitigate development risk and develop complex reservoir optimum way. Carbonate reservoir structural style due to secondary alterations of pore structure as a result of secondary processes display requires an unconventional approach to modeling. Integration of geological disciplines can help to understand and forecast reservoir performance and to determine development strategy.

Key topics:

  • Efficient background data integration in carbonate reservoir modeling
  • Conceptual modeling and secondary alterations in geological modeling of carbonate reservoir
  • Geological modeling of hydrocarbon accumulation’s porosity and permeability heterogeneity in carbonate reservoir
  • Building and re-scaling of natural fracturing models
  • Modeling of oil recovery improvement and enhancement in carbonate reservoir
  • Integrated modeling of carbonate reservoir, pore systems of different scale and control of geological, hydro and geomechanical processes

Session 3. Carbonate Reservoir Development

Carbonate reservoir development is associated with fracturing, complex structure of deposits (Ex., high-amplitude reef), low porosity, conservative approach to stimulation (hydrochloric acid), and difficulties of efficient formation-pressure maintenance system due to water mobility and dual porosity of reservoir.

Accurate analysis and reserves recovery reasoning require advanced study, apart from the standard set of studies. Advanced studies include multi-rate pilot development, observation well testing coupled with special core tests, well logging and 3D seismic results.

Key topics:

  • Reef reservoir development – case studies;
  • Formation pressure maintenance in carbonates, implementation issues;
  • Selection of optimal well network and case studies of porous and fractured vuggy formations development;
  • Horizontal wells with multistage hydraulic fracturing for efficient carbonate formation development.

Session 4. Carbonate Reservoir Stimulation and Recovery Optimization

Efficient Carbonate Reservoirs development requires complex approaches and innovative methods. Russia has reservoirs at all stages of development. Most of the greenfields have unique characteristics and pose new challenges to the industry. At the same time, mature carbonate assets are still a significant part of oil production, and they claim as much attention as green fields.  The workshop will explore cases to highlight assessment, advanced technologies for production stimulation and how we can apply these to the new frontiers.

Key topics:

  • Development targets classification to determine EOR method
  • Stimulation methods and candidate well selection principles for intervention
  • Well stimulation technology: how to select, including quality assurance and quality control
  • Oil recovery methods: selection and testing

Round Table: Undeveloped Reserves: Production Prospects

New technologies together with tax privileges allow encroaching on such carbonate reservoirs, which have been considered unprofitable. During the open discussion we will talk about:

  • Carbonate formations resource portfolio, classification and proportion of proved & undeveloped reserves
  • Low production carbonate formations and revision of its potential in light of shale revolution
  • Domanic: resources potential, study and development case studies
  • Scenario comparison for key shale regions of Russia and the US (resources, productivity, production technologies, taxes)
  • Complex assessment low debit carbonate formations in terms of K/Mu, resource potential of carbonate formations with heavy oil.