Paper: Review of Practical Method Of Casing Design For Deep Wells

Design of casing and liner strings grows more critical as well depths and bottom-hole pressures increase. Service conditions, economics, material properties, and stress-inducing parameters must all be considered to arrive at an optimum casing or liner design. A practical approach to considering the three basic load conditions, i.e., internal pressure, collapse pressure, and tension, and how they affect casing string design decisions is presented here. Safety factors that have wide industry acceptance and use are discussed. Actual practice is then reviewed by comparing the "ideal" to the "