Introduction; Application of Fluid Flow Equations to Gas Systems; Well T esting Techniques in Horizontal Gas Wells; Deliverability Testing and We ll Production Potential Analysis Methods; Fundamentals of Draw Down Test Analysis Methods; Fundamentals of Pressure Building Analysis Methods; P redicting Future Deliverability Using Empirical Relationships; Applicati on of Type Curve Matching Techniques; Pressure Derivative Methods of Ana lysis; Massive Hydraulic Fractured Well Behavior Analysis; Fractured Wel l Behavior Analysis Using Bilinear Flow Theory; Practical Application of Interference and Pulse Tests; Well Testing Terminology in Multilayered Resevoir Systems; Pressure Behavior Analysis in Heterogeneous Resevoir S ystems; Gas Well Testing - Field Case Studies