Why is the material selection for drill pipe critical when drilling highly corrosive formations, and what is the best practice to choose the right material?

Material selection for drill pipe is critical when drilling highly corrosive formations because corrosion can significantly reduce the drill pipe's strength and lead to premature failure, resulting in costly downtime, potential well control incidents, and environmental damage. Corrosive formations contain substances like hydrogen sulfide (H2S), carbon dioxide (CO2), chlorides, and organic acids, which can attack the steel alloy of the drill pipe through various mechanisms, including general corrosion, pitting corrosion, stress corrosion cracking, and hydrogen embrittlement. These corrosion mechanisms weaken the drill pipe, making it susceptible to fatigue failure under the cyclic loading co....