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Practical DST Interpretation - Course Outline

  • —Origins & History

  • —Types of Tests

    • —Bottom hole Test

    • —Straddle Test

    • —Inflate Straddle Test

  • —Basic Equipment

  • —Cushions

  • —Recent Developments

  • —DST Pressure Chart Interpretation

  • —Fluid Gradients

  • —Basic Chart Nomenclature / DST Operation Events

  • —Influence of Permeability on Shape of Flow & Shut In Curves

  • —DSTs of Liquids

  • —Characteristics of Gas Producing Tests

  • —How to identify gas in tests where no gas reaches the surface

  • —Gas Rates from TSTM

  • —Characteristics of Low Rate Oil Zone Tests

  • —How to identify oil from DST's where no oil is recovered

  • —Formation Damage Visual Identification

  • —Damage & Improvement

  • —Deep Formation Damage

  • —Damage Ratio

  • —Identification of Depletion

    • —Depletion & Depletion Factor

    • —Depleting Fracture Porosity

    • —False Depletion

  • —Qualitative Horner Extrapolation Interpretations

  • —Horner Time

  • —Reservoir Geometry, Limits & Size

  • —Horner Calculations

  • —Mechanical Problems

    • —Stair Stepping

    • —Misruns

    • —Tool Plugging

    • Leaking Bottom Packers

  • —Progressive Invasion & Damage With Time