This book describe the Well completion equipment's such well Casing, Liner, Tubing Packers, and Christmas tree, also describe their functions, design, and processes in common. Talk about the process of running casing and cement, perforating in under balance condition, production preparations, stimulation treatments and sand control. stimulation treatments in this book comprises matrix acidizing, hydraulic fracturing, and fracture acidizing. Sand control comprises gravel packing, frac-packing, variant techniques.