Reservoir engineers, drilling engineers, geologists, and production engineers will find this well-researched book most helpful. The author draws from his extensive experience in horizontal operations around the world and provides you with a thorough understanding of horizontal well technology basics. The author presents history of the technology, recent developments, and basic drilling concepts. In addition, he discusses factors influencing horizontal well performance, such as naturally fractured reservoirs, inaccessible locations, drilling attic oil, drilling through faults and relief wells. The author includes field histories and analyses of productivity and performance.