Dr. Joshi provides you with an understanding of horizontal well technology basics, presents a history of the technology, recent developments, and basic drilling concepts, and discusses performance factors, such as naturally fractured reservoirs, inaccessible locations, drilling attic oil, drilling through faults, and relief wells. Contents: Overview of horizontal well technology Reservoir engineering concepts Steady-state solutions Influence of well eccentricity Comparison of horizontal & fractured verticle wells Transient well testing Pseudo-steady state-flow Water & gas coming in verticle & horizontal wells Horizontal wells in gas reservoirs Pressure drops through tubing a horizontal well Appendices.