Baoshi Pipe has successfully trial-produced China’s first domestically developed titanium alloy coiled tubing, filling a product gap within CNPC and marking a major technological breakthrough in the field of high-end energy tubing. This advancement provides a critical piece of core equipment for oil and gas resource development under extreme conditions such as deep-sea, ultra-deep wells, and highly corrosive environments.

Titanium alloy coiled tubing has a density of only 57% that of steel, yet it offers high strength, reduced weight, superior corrosion resistance, and excellent fatigue performance. Compared to carbon steel coiled tubing of the same grade, it significantly improves the depth to which tubing strings can be deployed. This makes it highly suitable for long-term use in both onshore environments rich in hydrogen sulfide, carbon dioxide, and chloride ions, as well as offshore oil and gas resource development. It can meet various operational needs in oil and gas drilling, well completion, production, and transportation.

To overcome the challenges of manufacturing titanium alloy coiled tubing, Baoshi Pipe established a dedicated project team and developed a comprehensive implementation plan. Through repeated testing and multiple rounds of trial production, they selected the optimal titanium alloy materials and appropriate welding materials, and upgraded key equipment for gas shielding, forming, and welding throughout the production process.

“We successfully tackled core technical challenges such as controlling springback during cold forming of titanium alloys, achieving high-precision, high-energy-density continuous laser welding, and conducting in-line gas-shielded annealing. The first roll of titanium alloy coiled tubing fully meets all performance requirements,” said Zhao Kun, Baoshi Pipe’s chief expert.