High-strength 5 7/8-in. drillpipe

New developments in drilling tubulars are rapidly evolving and represent enabling technology for drilling deeper, longer-reach wells more cost-effectively. The full-length paper describes field performance of high-strenght, high-toughness 5 7/8-in. drillpipe as well as provides a statistical look at high-strength drillpipe grades. Application-specific landing-string designs also are discussed.