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WOC 1: Exploration & Production of Natural Gas
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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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SG 1.2. Difficult reservoirs and unconventional natural gas resources

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Sg 1 2 difficult reservoirs and unconventional natural gas resources

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).


Unconventional reservoirs a permanent challenge

Unconventional Reservoirs – A permanent Challenge


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


Unconventional reservoirs

Unconventional Reservoirs


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