This casing type can be used in wells with content of 8% H2S gas and could well-solve corrosion cracking.
1.Low alloy pipe stock, low content of P, S;
2.Grain Size > level 7, equality and thinness;
3.Apply SL premium threading connection, good strength and reliable sealing;
4.Excellent H2S corrosion resistance, applied by middle/deep wells containing H2S gas.