Running Casing, Using Drums to Create Running Tools Casing is a Large diameter pipe lowered into an openhole. The well designer must design casing to withstand a variety of forces, such as collapse, burst, and tensile failure, as well as chemically aggressive brines. The casing pipe is mandatory in drilling operations as it has a lot of casing functions to prevent collapse in unconsolidated formations, isolate problem zones, and many more. #drilling #rig #mudpump #liner #plungerpump #plunger #pu