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SG 1.2. Difficult reservoirs and unconventional natural gas resources

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WOC 1: Exploration & Production of Natural Gas. SG 1.2. Difficult reservoirs and unconventional natural gas resources. Kamel Eddine CHIKHI Associations Director SONATRACH. Moscow Meeting 25-27 September 2006. Study Group Topics. Difficult reservoirs and unconventional resources

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WOC 1: Exploration & Production of Natural Gas

SG 1.2.

Difficult reservoirs and unconventional natural gas resources

Kamel Eddine CHIKHI

Associations Director

SONATRACH

Moscow Meeting

25-27 September 2006

study group topics
Study Group Topics
  • Difficult reservoirs and unconventional resources
    • 1. Difficult reservoirs and technologies for their exploration and production (sour gas, HT/HP, Deep Gas (>4,500m, basin center), shallow (<500 m) gas, tight reservoirs)
    • 2. Unconventional resources and technologies for their exploration and production (coalbed methane, gas hydrates, aquifer gas).
difficult reservoirs areas of concern
Difficult reservoirs – Areas of Concern
  • Study Goals
    • Definitions
      • Definition of difficult reservoirs
      • Sedimentology & Petrology : Depositional environments reconstitution
      • Subsidence & its consequences
      • Diagenesis & diagenetic sequences
      • Natural fracturation : origin & effects on reservoirs qualities
      • Porosity characterization & classification
      • Geomechanics fundamentals
      • Reservoirs Stimulation
    • Exploration technologies
      • Anisotropy assessment : spacial development geometry and distribution of  and k
      • Natural fractures characterization & modeling
      • Microfacies standardisation
      • Seismic attributes as a tool to characterize and predict reservoirs properties
      • Formation evaluation dedicated techniques
      • Flow units characterisation & Multilayers modelling
      • Resources & reserves assessment - Uncertainties quantification
      • Drilling fluids design & wellbore stability
      • HTHP & complex reservoirs testing techniques
    • Production technologies
      • Drainage models & Wells spacing optimization
      • Hydraulic fracturation optimization
      • Reservoir performance modelling
      • Completion of poorly consolidated formation
      • Advanced wells construction : Deviated and horizontal drilling applications
      • Production monitoring & control
difficult reservoirs
Difficult reservoirs
  • Expected results
    • Identification of key technology needs for understanding Difficult Reservoirs
    • Address areas of technology improvements needed to face technical gaps in exploration & production
    • Lower cost of difficult reservoirs development in particular for Play Resources assessment, Subsurface Imaging, Drilling, Well Completion, and Stimulation.
unconventional natural gas resources
Unconventional Natural Gas Resources
  • Study Goals
    • Definitions & Standardization attempt
      • Definition of unconventional gas resources
      • Standardization of the different categories :
        • Deep & basin centered natural gas, Tight natural gas sands, Shale gas,

Coalbed methane, Geopressurized zones, Methane hydrates …

    • Assessment & Outlook
      • Exploration efficiency
      • Assessment of unconventional Gas Reserves & Resources
      • Technically & Economically recoverable UNGR
      • Role of unconventional gas in world supply for mid & long terms
    • Exploration & Production technologies
      • Data (seismic & wells) integrated expert systems
      • Basin scale petroleum systems
      • Sourcing modeling
      • Fracturation assessment & modeling
      • Plays / Reservoirs characterization & modeling
      • Well-log interpretation/petrophysical models for detection of marginal pay
      • Dedicated drilling techniques
      • Wells completion & stimulation : hydraulic, acid …
      • Nanotechnology in reservoirs Monitoring
      • Production Prediction & Optimization
      • Lessons learned for UNGR development & Best practices inventory
      • Cases studies
unconventional natural gas resources1
Unconventional Natural Gas Resources
  • Expected results
    • Review of Definition of what is exactly unconventional gas & propose a classification that, if accepted, can be used in different world regions
    • Update of the Global trends & the role of unconventional Gas Reserves & Resources in world supply
    • Fine tuning Exploration techniques & democratization of dedicated technologies for assessing UNGR
    • Deliver a comprehensive overview of production techniques and best practices overview
study group 1 2
Study Group 1.2
  • Meetings
    • 3 meetings / year : February, June, October
    • Identify locations for forthcoming meetings – Proposals
  • Themes
    • Questionnaire concerning items to be studied
    • Finalize, prior to next meeting, the list of themes
  • Contribution
    • Build a data base of external experts to be invited to contribute to the study
    • Finalize list of members of the group
    • Technical Secretary of SG 1.2
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