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Unconventional Gas Reservoir

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What is a Typical Unconventional Gas Reservoir?
Compare between Conventional vs. Unconventional Reservoir
What are Unconventional Resources…!
Why Do We Need Unconventional Reservoirs ?
Unconventional Gas Reservoir; Unconventional Resources; Worldwide Unconventional Gas Production; Types of Natural Gas Resource; The Resource Triangle

Publié dans : Formation
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Unconventional Gas Reservoir

  1. 1. Hassan Z. Harraz hharraz2006@yahoo.com Spring 2018 @Hassan Harraz 2018 Unconventional reservoir @Hassan Harraz 2018 UnconventionalReservoir Tight Gas, Coal Seams, Shales, and Hydrates
  2. 2. Outline Introduction Unconventional Gas Reservoir Unconventional Resources Worldwide Unconventional Gas Production Types of Natural Gas Resource The Resource Triangle @Hassan Harraz 2018 Unconventional reservoir  What is a Typical Unconventional Gas Reservoir?  Compare between Conventional vs. Unconventional Reservoir  What are Unconventional Resources…!  Why Do We Need Unconventional Reservoirs ?
  3. 3. 1) INTRODUCTION
  4. 4. 1.1) Unconventional Gas Reservoir
  5. 5. @Hassan Harraz 2018 Unconventional reservoir
  6. 6. 1.2) Conventional Reservoir vs. Unconventional Reservoir
  7. 7. @Hassan Harraz 2018 Unconventional reservoir
  8. 8. 1.3) What are Unconventional Resources…!
  9. 9. 1.4) Why Do We Need Unconventional Reservoirs ?
  10. 10. 1.5) Natural Gas Accumulation Types Schematic showing the Geometryof Conventional and Unconventional Natural Gas Resources Low permeability reservoirs contain GIP only in pervasive gas saturated regimes @Hassan Harraz 2018 Unconventional reservoir
  11. 11. • hydrocarbons may be extracted by conventional vertical wells, or unconventional horizontal drilling where rock layers rich in shale gas are fractured by pumping water underground under high pressure with particles ("proppants") to keep the fractures open Schematic showing the Geology of Natural Gas Resources @Hassan Harraz 2018 Unconventional reservoir
  12. 12. 1.5) Natural Gas Accumulation Types
  13. 13. Types of Natural Gas Resources
  14. 14. An illustration of various types of gas deposits. @Hassan Harraz 2018 Unconventional reservoir
  15. 15. Fracking for Natural Gas @Hassan Harraz 2018 Unconventional reservoir  To get resources out of the ground, artificial pathways (fractures) have to be created.  The gas is trapped in layers accessible only by horizontal drilling  Key technologies are horizontal drilling and hydraulic fracturing techniques.  Need much higher number of extracting well.
  16. 16. 1.6) The Resource Triangle
  17. 17. @Hassan Harraz 2018 Unconventional reservoir Figure The resource triangle for oil and gas reservoirs. Stephen Holditch’s Natural Gas Resource and Quality Types IncreasedPrices IncreasedTechnology 1,000 md 10 md 0.1 md 0.001 md Small Volumes: Easy develop Large Volumes: difficult to develop
  18. 18. @Hassan Harraz 2018 Unconventional reservoir
  19. 19. 1.7) Natural Gas Resources @Hassan Harraz 2018 Unconventional reservoir The most pronounced trend in the evolution of world’s proven resources is the divergence between conventional and unconventional resources.
  20. 20. @Hassan Harraz 2018 Unconventional reservoir Shale has been visibly growing, while the conventional base is slowly reducing.
  21. 21. @Hassan Harraz 2018 Unconventional reservoir
  22. 22. 1.8) Unconventionals have been the key source of global gas production growth Recent gas production growth was mainly driven by unconventionals. which was largely due to increases in the US and Canada. @Hassan Harraz 2018 Unconventional reservoir
  23. 23. U.S. Shale Production Forecast to Dramatically Increase, Resulting in Lower in Natural Gas Prices Source: EIA (http://www.eia.gov/forecasts/aeo/er/executive_summary.cfm) “The United States may be close to self-sufficiency in energy by 2030 because of a "Shale Revolution" in the country.” BP CEO Bob Dudley, January 17, 2013 @Hassan Harraz 2018 Unconventional reservoir
  24. 24. Shales: What’s the Big Deal? International Energy Agency Projections Source: Source: International Energy Agency, Golden Rules for a GoldenAge of Gas: World Energy Outlook, Special Reporton UnconventionalGas, OECD/IEA,May 29, 2012 @Hassan Harraz 2018 Unconventional reservoir
  25. 25. approximation of the production rate of a resource over time @Hassan Harraz 2018 Unconventional reservoir
  26. 26. 1.9) Production Worldwide
  27. 27. Table 1: Distribution of worldwide unconventional gas reservoirs
  28. 28. Summary Why Unconventional Gas Reservoirs need to be Hydraulically Fractured The importance of complex hydraulic fracture geometry The Hydraulic Fracturing Process described Fracturing Materials What Can We Control During a Fracture Treatment? Why cause and effect with respect to production are not always obvious @Hassan Harraz 2018 Unconventional reservoir
  29. 29. Outline of Lectures: Topic 1: Natural Gas (Overview). Topic 2: Unconventional Gas Reservoir Topic 3: Shale Gas Topic 4:Coalbed Methane (CBM) Topic 5: Tight Reservoir Topic 6: Gas Hydrates Topic 7: Hydraulic Fracturing. Topic 8 : Separating and Treating Well Fluids Topic 9 : Natural Gas Processes Topic 10 : Liquefied Natural Gas (LNG) Life Cycle Overview. Topic 11 : Egyptian Natural Gas Resource (Overview). @Hassan Harraz 2018 Nature Gas 30

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