In response to the severe well condition with high sulfer content, Nickel-based alloy tubing is currently mostly used, But for the high density of Nickel-based alloy tubing, the safty factor of deep well pipe column is not rich. And it requires higher strength in the ultra deep well. Titanium allloy has become a new choice of the pipeline material, because of its higher corrosion resistance performance, And the density of titanium is only half percent of that of nickel-based alloy.
In this few years, a variety of titanium and titanium alloy have been selected for analysis and testing the production of tubing in order to provide new options for deep and ultra-deep wells solutions. The selection of titanium alloy tube, pure titanium and titanium alloy in oil and gas exploitation and production are shown in the following table.
The Lowest Yield Strength/MPa
Industrial Pure Titanium(TA1)
plate heat exchanger;
Industrial Pure Titanium(TA2)
tubular heat exchanger; seawater pipeline;
tubular heat exchanger; ground pipeline; vertical pipe; transmission pipeline;
ground pipeline; structure on the drilling tool; vertical pipeline, transmission pipeline;
Drilling Well Vertical Pipe; Oil extraction and output vertical pipes; fastener
conical stress connectors; Oil extraction and output vertical pipes;